diff --git a/Android.mk b/Android.mk
new file mode 100644
index 0000000..52fea87
--- /dev/null
+++ b/Android.mk
@@ -0,0 +1,59 @@
+# This is the Android makefile for google3/third_party/libsrtp so that we can
+# build it with the Android NDK.
+
+LOCAL_PATH:= $(call my-dir)
+
+common_SRC_FILES := \
+    srtp/srtp.c \
+    srtp/ekt.c \
+    crypto/cipher/cipher.c \
+    crypto/cipher/null_cipher.c \
+    crypto/cipher/aes.c \
+    crypto/cipher/aes_icm.c \
+    crypto/cipher/aes_cbc.c \
+    crypto/hash/null_auth.c \
+    crypto/hash/sha1.c \
+    crypto/hash/hmac.c \
+    crypto/hash/auth.c \
+    crypto/math/datatypes.c \
+    crypto/math/stat.c \
+    crypto/rng/rand_source.c \
+    crypto/rng/prng.c \
+    crypto/rng/ctr_prng.c \
+    crypto/kernel/err.c \
+    crypto/kernel/crypto_kernel.c \
+    crypto/kernel/alloc.c \
+    crypto/kernel/key.c \
+    crypto/ae_xfm/xfm.c \
+    crypto/replay/rdb.c \
+    crypto/replay/rdbx.c
+
+common_CFLAGS := \
+    -DPOSIX -iquote$(LOCAL_PATH)/crypto/include \
+    -Werror \
+    -Wno-ignored-qualifiers \
+    -Wno-sign-compare \
+    -Wno-missing-field-initializers
+
+common_C_INCLUDES = $(LOCAL_PATH)/include
+
+# For the device
+# =====================================================
+# Device static library
+
+include $(CLEAR_VARS)
+
+ifneq ($(TARGET_ARCH),x86)
+    LOCAL_NDK_VERSION := 5
+    LOCAL_SDK_VERSION := 9
+endif
+
+
+LOCAL_SRC_FILES := $(common_SRC_FILES)
+LOCAL_CFLAGS += $(common_CFLAGS)
+LOCAL_C_INCLUDES += $(common_C_INCLUDES)
+
+LOCAL_MODULE:= libsrtp_static
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_STATIC_LIBRARY)
diff --git a/Changes b/Changes
new file mode 100644
index 0000000..949c389
--- /dev/null
+++ b/Changes
@@ -0,0 +1,223 @@
+Changelog
+
+1.3.20
+
+  Lots of changes.  Thanks to Jeff Chan for catching a memory leak and
+  helping track down the endian issues with the SSRCs.
+
+1.3.8
+
+  This is an interim release.  Several little-endian bugs were identified
+  and fixed; this means that we can use intel/linux for development again.
+
+  Cleaned up sha1 and hmac code significantly, got rid of some excess
+  functions and properly documented the fuctions in the .h files.
+
+  Eliminated some vestigial files.
+
+  There is a SIGBUS error in the AES encrypt function on sparc
+  (observed on both solaris and openbsd) with gcc 2.95.  Was unable to
+  find bad pointer anywhere, so I'm wondering if it isn't a compiler
+  problem (there's a known problem whose profile it fits).  It doesn't
+  appear on any other platform, even in the cipher_driver stress
+  tests.
+
+  Planned changes
+
+  Change interface to nonces (xtd_seq_num_t) so that it uses
+  network byte ordering, and is consistent with other arguments.
+
+
+1.3.6 
+
+  Changed /dev/random (in configure.in and crypto/rng/rand_source.c) to
+  /dev/urandom; the latter is non-blocking on all known platforms (which 
+  corrects some programs that seem to hang) and is actually present on 
+  Open BSD (unlike /dev/random, which only works in the presence of 
+  hardware supported random number generation).
+
+  Added machine/types.h case in include/integers.h.
+
+1.3.5
+
+  Removing srtp_t::template and stream_clone().
+
+  Adding a new policy structure, which will reflect a complete SRTP
+  policy (including SRTCP).
+
+  This version is *incomplete* and will undergo more changes.  It is
+  provided only as a basis for discussion.
+
+1.3.4
+
+   Removed tmmh.c and tmmh.h, which implemented version one of TMMH.
+
+   Changed srtp_get_trailer_length() to act on streams rather than
+   sessions, and documented the macro SRTP_MAX_TRAILER_LEN, which should
+   usually be used rather than that function.
+
+   Removed 'salt' from cipher input. 
+
+   Changed rdbx to use err.h error codes.
+
+   Changed malloc() and free() to xalloc() and xfree; these functions
+   are defined in crypto/kernel/alloc.c and declared in 
+   include/alloc.h.
+
+   Added 'output' functions to cipher, in addition to 'encrypt'
+   functions.  It is no longer necessary to zeroize a buffer before
+   encrypting in order to get keystream.
+
+   Changed octet_string_hex_string() so that "times two" isn't needed
+   in its input.
+
+   Added crypto_kernel_init() prior to command-line parsing, so that
+   kernel can be passed command-line arguments, such as "-d
+   debug_module".  This was done to for the applications
+   test/srtp-driver, test/kernel-driver, and test/ust-driver.
+
+   Improved srtp_init_aes_128_prf - wrote key derivation function
+   (srtp_kdf_t).
+
+   Add the tag_len as an argument to the auth_compute() function, but
+   not the corresponding macro.  This change allows the tag length for
+   a given auth func to be set to different values at initialization
+   time.  Previously, the structure auth_t contained the
+   output_length, but that value was inaccessible from hmac_compute()
+   and other functions.
+
+   Re-named files from a-b.c to a_b.c. in order to help portability.
+
+   Re-named rijndael to aes (or aes_128 as appropriate).
+
+
+1.2.1 
+
+  Changes so that 1.2.0 compiles on cygwin-win2k.
+
+  Added better error reporting system.  If syslog is present on the
+  OS, then it is used.
+
+
+1.2.0 Many improvements and additions, and a fex fixes
+
+   Fixed endian issues in RTP header construction in the function
+   rtp_sendto() in srtp/rtp.c.
+
+   Implemented RIJNDAEL decryption operation, adding the functions
+   rijndael_decrypt() and rijndael_expand_decryption_key().  Also
+   re-named rijndael_expand_key() to rijndael_expand_encryption_key()
+   for consistency.
+
+   Implemented random number source using /dev/random, in the files
+   crypto/rng/rand_source.c and include/rand_source.h.
+
+   Added index check to SEAL cipher (only values less than 2^32 are
+   allowed)
+
+   Added test case for null_auth authentication function.
+
+   Added a timing test which tests the effect of CPU cache thrash on
+   cipher throughput.  The test is done by the function
+   cipher_test_throughput_array(); the function
+   cipher_array_alloc_init() creates an array of ciphers for use in
+   this test.  This test can be accessed by using the -a flag to
+   the application cipher-driver in the test subdirectory.
+ 
+   Added argument processing to ust-driver.c, and added that app to
+   the 'runtest' target in Makefile.in.
+
+   A minor auth_t API change: last argument of auth_init() eliminated.
+
+
+1.0.6 A small but important fix
+
+   Fixed srtp_init_aes_128_prf() by adding octet_string_set_to_zero()
+   after buffer allocation.
+
+   Eliminated references to no-longer-existing variables in debugging
+   code in srtp/srtp.c.  This fixes the compilation failure that
+   occured when using PRINT_DEBUG in that file.
+
+   Corrected spelling of Richard Priestley's name in credits.  Sorry
+   Richard!
+
+
+1.0.5 Many little fixes
+
+   Fixed octet_string_set_to_zero(), which was writing one
+   more zero octet than it should.  This bug caused srtp_protect()
+   and srtp_unprotect() to overwrite the byte that followed the
+   srtp packet.
+
+   Changed sizeof(uint32_t) to srtp_get_trailer_length() in
+   srtp-driver.c.  This is just defensive coding.
+
+   Added NULL check to malloc in srtp_alloc().
+
+
+1.0.4 Many minor fixes and two big ones (thanks for the bug reports!)
+
+   Removed 'ssrc' from the srtp_init_aes_128_prf() function argument
+   list.  This is so that applications which do not a priori know the
+   ssrc which they will be receiving can still use libsrtp.  Now the
+   SSRC value is gleaned from the rtp header and exored into the
+   counter mode offset in the srtp_protect() and srtp_unprotect()
+   functions, if that cipher is used.  This change cascaed through
+   many other functions, including srtp_init_from_hex(),
+   srtp_sender_init() and srtp_receiver_init() in rtp.c, and also
+   changing the CLI to test/rtpw.  In the future, another function
+   call will be added to the library that enables multiple ssrc/key
+   pairs to be installed into the same srtp session, so that libsrtp
+   works with multiple srtp senders.  For now, this functionality is
+   lacking.
+
+   Removed the GDOI interface to the rtpw demo program.  This will be
+   added again at a later date, after the SRTP and GDOI distributions
+   stabilize.  For now, I've left in the GDOI #defines and autoconf
+   definitions so that they'll be in place when needed.
+
+   Updated tmmhv2_compute() so that it didn't assume any particular
+   alginment of the output tag.
+
+   Changed bit field variables in srtp.h to unsigned char from
+   unsigned int in order to avoid a potential endianness issue.
+
+   Fixed rdbx_estimate_index() to handle all input cases.  This solves
+   the now notorious "abaft" bug in the rtpw demo app on linux/intel,
+   in which spurious replay protection failures happen after that word
+   is received.
+
+   Added ntohs(hdr->seq) to srtp_protect and srtp_unprotect, removed
+   from rijndael_icm_set_segment().
+
+   Added error checking and handling to srtp_sender_init() and
+   srtp_receiver_init().
+
+   Changed srtp_alloc() so that it does what you'd expect: allocate an
+   srtp_ctx_t structure.  This hides the library internals.
+
+
+1.0.1   Many minor fixes
+
+   Added cipher_driver_buffer_test(...) to test/cipher-driver.c.  This
+   function checks that the byte-buffering functions used by a cipher
+   are correct.
+
+   Fixed SunOS/Solaris build problems: added HAVE_SYS_INT_TYPES_H and
+   changed index_t to xtd_seq_num_t (see include/rdbx.h).
+
+   Fixed SEAL3.0 output byte buffering, added byte-buffering test to
+   cipher/cipher-driver.c.
+
+   Fixed roc-driver so that the non-sequential insertion test
+   automatically recovers from bad estimates.  This was required to
+   prevent spurious failures.
+
+   Made rdbx_estimate_index(...) function smarter, so that initial RTP
+   sequence numbers greater than 32,768 don't cause it to estimate the
+   rollover counter of 0xffffffff.
+
+
+1.0.0   Initial release
+
diff --git a/CleanSpec.mk b/CleanSpec.mk
new file mode 100644
index 0000000..b84e1b6
--- /dev/null
+++ b/CleanSpec.mk
@@ -0,0 +1,49 @@
+# Copyright (C) 2007 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# If you don't need to do a full clean build but would like to touch
+# a file or delete some intermediate files, add a clean step to the end
+# of the list.  These steps will only be run once, if they haven't been
+# run before.
+#
+# E.g.:
+#     $(call add-clean-step, touch -c external/sqlite/sqlite3.h)
+#     $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libz_intermediates)
+#
+# Always use "touch -c" and "rm -f" or "rm -rf" to gracefully deal with
+# files that are missing or have been moved.
+#
+# Use $(PRODUCT_OUT) to get to the "out/target/product/blah/" directory.
+# Use $(OUT_DIR) to refer to the "out" directory.
+#
+# If you need to re-do something that's already mentioned, just copy
+# the command and add it to the bottom of the list.  E.g., if a change
+# that you made last week required touching a file and a change you
+# made today requires touching the same file, just copy the old
+# touch step and add it to the end of the list.
+#
+# ************************************************
+# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
+# ************************************************
+
+# For example:
+#$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/AndroidTests_intermediates)
+#$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/core_intermediates)
+#$(call add-clean-step, find $(OUT_DIR) -type f -name "IGTalkSession*" -print0 | xargs -0 rm -f)
+#$(call add-clean-step, rm -rf $(PRODUCT_OUT)/data/*)
+
+# ************************************************
+# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
+# ************************************************
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..dd43240
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,35 @@
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
diff --git a/MODULE_LICENSE_BSD b/MODULE_LICENSE_BSD
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/MODULE_LICENSE_BSD
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..938a6ad
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,220 @@
+# Makefile for secure rtp 
+#
+# David A. McGrew
+# Cisco Systems, Inc.
+
+# targets:
+#
+# runtest       runs test applications 
+# test		builds test applications
+# libcrypt.a	static library implementing crypto engine
+# libsrtp.a	static library implementing srtp
+# clean		removes objects, libs, and executables
+# distribution  cleans and builds a .tgz
+# tags          builds etags file from all .c and .h files
+
+.PHONY: all test build_table_apps
+
+all: test 
+
+runtest: build_table_apps test
+	@echo "running libsrtp test applications..."
+	crypto/test/cipher_driver$(EXE) -v >/dev/null
+	crypto/test/kernel_driver$(EXE) -v >/dev/null
+	test/rdbx_driver$(EXE) -v >/dev/null
+	test/srtp_driver$(EXE) -v >/dev/null
+	test/roc_driver$(EXE) -v >/dev/null
+	test/replay_driver$(EXE) -v >/dev/null
+	@echo "libsrtp test applications passed."
+	$(MAKE) -C crypto runtest
+
+# makefile variables
+
+CC	= gcc
+INCDIR	= -Icrypto/include -I$(srcdir)/include -I$(srcdir)/crypto/include
+DEFS	= -DHAVE_CONFIG_H
+CPPFLAGS= 
+CFLAGS	= -Wall -O4 -fexpensive-optimizations -funroll-loops
+LIBS	= 
+LDFLAGS	=  -L.
+COMPILE = $(CC) $(DEFS) $(INCDIR) $(CPPFLAGS) $(CFLAGS)
+SRTPLIB	= -lsrtp
+
+RANLIB	= ranlib
+INSTALL	= /usr/bin/install -c
+
+# EXE defines the suffix on executables - it's .exe for Windows, and
+# null on linux, bsd, and OS X and other OSes.
+EXE	= 
+# gdoi is the group domain of interpretation for isakmp, a group key
+# management system which can provide keys for srtp
+gdoi	= 
+# Random source.
+RNG_OBJS = rand_source.o
+
+srcdir = .
+top_srcdir = .
+top_builddir = 
+
+prefix = /home/astor/localastor/google3/third_party/libsrtp/v1_4_2
+exec_prefix = ${prefix}
+includedir = ${prefix}/include
+libdir = ${exec_prefix}/lib
+
+
+# implicit rules for object files and test apps
+
+%.o: %.c
+	$(COMPILE) -c $< -o $@
+
+%$(EXE): %.c
+	$(COMPILE) $(LDFLAGS) $< -o $@ $(SRTPLIB) $(LIBS)
+
+
+# libcrypt.a (the crypto engine) 
+ciphers = crypto/cipher/cipher.o crypto/cipher/null_cipher.o      \
+          crypto/cipher/aes.o crypto/cipher/aes_icm.o             \
+          crypto/cipher/aes_cbc.o
+
+hashes  = crypto/hash/null_auth.o crypto/hash/sha1.o \
+          crypto/hash/hmac.o crypto/hash/auth.o # crypto/hash/tmmhv2.o 
+
+replay  = crypto/replay/rdb.o crypto/replay/rdbx.o               \
+          crypto/replay/ut_sim.o 
+
+math    = crypto/math/datatypes.o crypto/math/stat.o
+
+ust     = crypto/ust/ust.o 
+
+rng     = crypto/rng/$(RNG_OBJS) crypto/rng/prng.o crypto/rng/ctr_prng.o
+
+err     = crypto/kernel/err.o
+
+kernel  = crypto/kernel/crypto_kernel.o  crypto/kernel/alloc.o   \
+          crypto/kernel/key.o $(rng) $(err) # $(ust) 
+
+cryptobj =  $(ciphers) $(hashes) $(math) $(stat) $(kernel) $(replay)
+
+# libsrtp.a (implements srtp processing)
+
+srtpobj = srtp/srtp.o 
+
+libsrtp.a: $(srtpobj) $(cryptobj) $(gdoi)
+	ar cr libsrtp.a $^
+	$(RANLIB) libsrtp.a
+
+# libcryptomath.a contains general-purpose routines that are used to
+# generate tables and verify cryptoalgorithm implementations - this
+# library is not meant to be included in production code
+
+cryptomath = crypto/math/math.o crypto/math/gf2_8.o 
+
+libcryptomath.a: $(cryptomath)
+	ar cr libcryptomath.a $(cryptomath)
+	$(RANLIB) libcryptomath.a
+
+
+# test applications 
+
+crypto_testapp = crypto/test/aes_calc$(EXE) crypto/test/cipher_driver$(EXE) \
+	crypto/test/datatypes_driver$(EXE) crypto/test/kernel_driver$(EXE) \
+	crypto/test/rand_gen$(EXE) crypto/test/sha1_driver$(EXE) \
+	crypto/test/stat_driver$(EXE)
+
+testapp = $(crypto_testapp) test/srtp_driver$(EXE) test/replay_driver$(EXE) \
+	  test/roc_driver$(EXE) test/rdbx_driver$(EXE) test/rtpw$(EXE)
+
+$(testapp): libsrtp.a
+
+test/rtpw$(EXE): test/rtpw.c test/rtp.c
+	$(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)
+
+test: $(testapp)
+	@echo "Build done. Please run '$(MAKE) runtest' to run self tests."
+
+memtest: test/srtp_driver
+	@test/srtp_driver -v -d "alloc" > tmp
+	@grep freed tmp | wc -l > freed
+	@grep allocated tmp | wc -l > allocated
+	@echo "checking for memory leaks (only works with --enable-stdout)"
+	cmp -s allocated freed
+	@echo "passed (same number of alloc() and dealloc() calls found)"
+	@rm freed allocated tmp
+
+# tables_apps are used to generate the tables used in the crypto
+# implementations; these need only be generated during porting, not
+# for building libsrtp or the test applications
+
+table_apps = tables/aes_tables 
+
+build_table_apps: $(table_apps)
+
+# in the tables/ subdirectory, we use libcryptomath instead of libsrtp
+
+tables/%: tables/%.c libcryptomath.a 
+	$(COMPILE) $(LDFLAGS) $< -o $@ $(LIBS) libcryptomath.a
+
+# the target 'plot' runs the timing test (test/srtp_driver -t) then
+# uses gnuplot to produce plots of the results - see the script file
+# 'timing'
+
+plot:	test/srtp_driver
+	test/srtp_driver -t > timing.dat
+
+
+# bookkeeping: tags, clean, and distribution
+
+tags:
+	etags */*.[ch] */*/*.[ch] 
+
+
+# documentation - the target libsrtpdoc builds a PDF file documenting
+# libsrtp
+
+libsrtpdoc:
+	$(MAKE) -C doc
+
+.PHONY: clean superclean install
+
+install:
+	@if [ -d $(DESTDIR)$(includedir)/srtp ]; then \
+	   echo "you should run 'make uninstall' first"; exit 1;  \
+	fi
+	$(INSTALL) -d $(DESTDIR)$(includedir)/srtp
+	$(INSTALL) -d $(DESTDIR)$(libdir)
+	cp include/*.h $(DESTDIR)$(includedir)/srtp  
+	cp crypto/include/*.h $(DESTDIR)$(includedir)/srtp
+	if [ -f libsrtp.a ]; then cp libsrtp.a $(DESTDIR)$(libdir)/; fi
+
+uninstall:
+	rm -rf $(DESTDIR)$(includedir)/srtp
+	rm -rf $(DESTDIR)$(libdir)/libsrtp.a
+
+clean:
+	rm -rf $(cryptobj) $(srtpobj) $(cryptomath) $(table_apps) TAGS \
+        libcryptomath.a libsrtp.a core *.core test/core
+	for a in * */* */*/*; do			\
+              if [ -f "$$a~" ] ; then rm -f $$a~; fi;	\
+        done;
+	for a in $(testapp) $(table_apps); do rm -rf $$a$(EXE); done
+	rm -rf *.pict *.jpg *.dat 
+	rm -rf freed allocated tmp
+	$(MAKE) -C doc clean
+	$(MAKE) -C crypto clean
+
+
+superclean: clean
+	rm -rf crypto/include/config.h config.log config.cache config.status \
+               Makefile .gdb_history test/.gdb_history .DS_Store
+	rm -rf autom4te.cache
+
+distname = srtp-$(shell cat VERSION)
+
+distribution: runtest superclean 
+	if ! [ -f VERSION ]; then exit 1; fi
+	if [ -f ../$(distname).tgz ]; then               \
+           mv ../$(distname).tgz ../$(distname).tgz.bak; \
+        fi
+	cd ..; tar cvzf $(distname).tgz srtp
+
+# EOF
diff --git a/Makefile.in b/Makefile.in
new file mode 100644
index 0000000..de890d1
--- /dev/null
+++ b/Makefile.in
@@ -0,0 +1,234 @@
+# Makefile for secure rtp 
+#
+# David A. McGrew
+# Cisco Systems, Inc.
+
+# targets:
+#
+# runtest       runs test applications 
+# test		builds test applications
+# libcrypt.a	static library implementing crypto engine
+# libsrtp.a	static library implementing srtp
+# clean		removes objects, libs, and executables
+# distribution  cleans and builds a .tgz
+# tags          builds etags file from all .c and .h files
+
+.PHONY: all test build_table_apps
+
+all: test 
+
+runtest: build_table_apps test
+	@echo "running libsrtp test applications..."
+	crypto/test/cipher_driver$(EXE) -v >/dev/null
+	crypto/test/kernel_driver$(EXE) -v >/dev/null
+	test/rdbx_driver$(EXE) -v >/dev/null
+	test/srtp_driver$(EXE) -v >/dev/null
+	test/roc_driver$(EXE) -v >/dev/null
+	test/replay_driver$(EXE) -v >/dev/null
+	test/dtls_srtp_driver$(EXE) >/dev/null
+	cd test; $(abspath $(srcdir))/test/rtpw_test.sh >/dev/null	
+	@echo "libsrtp test applications passed."
+	$(MAKE) -C crypto runtest
+
+# makefile variables
+
+CC	= @CC@
+INCDIR	= -Icrypto/include -I$(srcdir)/include -I$(srcdir)/crypto/include
+DEFS	= @DEFS@
+CPPFLAGS= @CPPFLAGS@
+CFLAGS	= @CFLAGS@
+LIBS	= @LIBS@
+LDFLAGS	= @LDFLAGS@ -L.
+COMPILE = $(CC) $(DEFS) $(INCDIR) $(CPPFLAGS) $(CFLAGS)
+SRTPLIB	= -lsrtp
+
+RANLIB	= @RANLIB@
+INSTALL	= @INSTALL@
+
+# EXE defines the suffix on executables - it's .exe for Windows, and
+# null on linux, bsd, and OS X and other OSes.
+EXE	= @EXE@
+# gdoi is the group domain of interpretation for isakmp, a group key
+# management system which can provide keys for srtp
+gdoi	= @GDOI_OBJS@
+# Random source.
+RNG_OBJS = @RNG_OBJS@
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+top_builddir = @top_builddir@
+VPATH = @srcdir@
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+includedir = @includedir@
+libdir = @libdir@
+
+
+# implicit rules for object files and test apps
+
+%.o: %.c
+	$(COMPILE) -c $< -o $@
+
+%$(EXE): %.c
+	$(COMPILE) $(LDFLAGS) $< -o $@ $(SRTPLIB) $(LIBS)
+
+
+# libcrypt.a (the crypto engine) 
+ciphers = crypto/cipher/cipher.o crypto/cipher/null_cipher.o      \
+          crypto/cipher/aes.o crypto/cipher/aes_icm.o             \
+          crypto/cipher/aes_cbc.o
+
+hashes  = crypto/hash/null_auth.o crypto/hash/sha1.o \
+          crypto/hash/hmac.o crypto/hash/auth.o # crypto/hash/tmmhv2.o 
+
+replay  = crypto/replay/rdb.o crypto/replay/rdbx.o               \
+          crypto/replay/ut_sim.o 
+
+math    = crypto/math/datatypes.o crypto/math/stat.o
+
+ust     = crypto/ust/ust.o 
+
+rng     = crypto/rng/$(RNG_OBJS) crypto/rng/prng.o crypto/rng/ctr_prng.o
+
+err     = crypto/kernel/err.o
+
+kernel  = crypto/kernel/crypto_kernel.o  crypto/kernel/alloc.o   \
+          crypto/kernel/key.o $(rng) $(err) # $(ust) 
+
+cryptobj =  $(ciphers) $(hashes) $(math) $(stat) $(kernel) $(replay)
+
+# libsrtp.a (implements srtp processing)
+
+srtpobj = srtp/srtp.o srtp/ekt.o
+
+libsrtp.a: $(srtpobj) $(cryptobj) $(gdoi)
+	ar cr libsrtp.a $^
+	$(RANLIB) libsrtp.a
+
+# libcryptomath.a contains general-purpose routines that are used to
+# generate tables and verify cryptoalgorithm implementations - this
+# library is not meant to be included in production code
+
+cryptomath = crypto/math/math.o crypto/math/gf2_8.o 
+
+libcryptomath.a: $(cryptomath)
+	ar cr libcryptomath.a $(cryptomath)
+	$(RANLIB) libcryptomath.a
+
+
+# test applications 
+
+crypto_testapp = crypto/test/aes_calc$(EXE) crypto/test/cipher_driver$(EXE) \
+	crypto/test/datatypes_driver$(EXE) crypto/test/kernel_driver$(EXE) \
+	crypto/test/rand_gen$(EXE) crypto/test/sha1_driver$(EXE) \
+	crypto/test/stat_driver$(EXE)
+
+testapp = $(crypto_testapp) test/srtp_driver$(EXE) test/replay_driver$(EXE) \
+	  test/roc_driver$(EXE) test/rdbx_driver$(EXE) test/rtpw$(EXE) \
+	  test/dtls_srtp_driver$(EXE)
+
+$(testapp): libsrtp.a
+
+test/rtpw$(EXE): test/rtpw.c test/rtp.c test/getopt_s.c
+	$(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)
+
+test/srtp_driver$(EXE): test/srtp_driver.c test/getopt_s.c
+	$(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)
+
+test/rdbx_driver$(EXE): test/rdbx_driver.c test/getopt_s.c
+	$(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)
+
+test/dtls_srtp_driver$(EXE): test/dtls_srtp_driver.c test/getopt_s.c
+	$(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)
+
+test: $(testapp)
+	@echo "Build done. Please run '$(MAKE) runtest' to run self tests."
+
+memtest: test/srtp_driver
+	@test/srtp_driver -v -d "alloc" > tmp
+	@grep freed tmp | wc -l > freed
+	@grep allocated tmp | wc -l > allocated
+	@echo "checking for memory leaks (only works with --enable-stdout)"
+	cmp -s allocated freed
+	@echo "passed (same number of alloc() and dealloc() calls found)"
+	@rm freed allocated tmp
+
+# tables_apps are used to generate the tables used in the crypto
+# implementations; these need only be generated during porting, not
+# for building libsrtp or the test applications
+
+table_apps = tables/aes_tables 
+
+build_table_apps: $(table_apps)
+
+# in the tables/ subdirectory, we use libcryptomath instead of libsrtp
+
+tables/%: tables/%.c libcryptomath.a 
+	$(COMPILE) $(LDFLAGS) $< -o $@ $(LIBS) libcryptomath.a
+
+# the target 'plot' runs the timing test (test/srtp_driver -t) then
+# uses gnuplot to produce plots of the results - see the script file
+# 'timing'
+
+plot:	test/srtp_driver
+	test/srtp_driver -t > timing.dat
+
+
+# bookkeeping: tags, clean, and distribution
+
+tags:
+	etags */*.[ch] */*/*.[ch] 
+
+
+# documentation - the target libsrtpdoc builds a PDF file documenting
+# libsrtp
+
+libsrtpdoc:
+	$(MAKE) -C doc
+
+.PHONY: clean superclean install
+
+install:
+	@if [ -r $(DESTDIR)$(includedir)/srtp/srtp.h ]; then \
+	   echo "you should run 'make uninstall' first"; exit 1;  \
+	fi
+	$(INSTALL) -d $(DESTDIR)$(includedir)/srtp
+	$(INSTALL) -d $(DESTDIR)$(libdir)
+	cp $(srcdir)/include/*.h $(DESTDIR)$(includedir)/srtp  
+	cp $(srcdir)/crypto/include/*.h $(DESTDIR)$(includedir)/srtp
+	if [ "$(srcdir)" != "." ]; then cp crypto/include/*.h $(DESTDIR)$(includedir)/srtp; fi
+	if [ -f libsrtp.a ]; then cp libsrtp.a $(DESTDIR)$(libdir)/; fi
+
+uninstall:
+	rm -f $(DESTDIR)$(includedir)/srtp/*.h
+	rm -f $(DESTDIR)$(libdir)/libsrtp.a
+	-rmdir $(DESTDIR)$(includedir)/srtp
+
+clean:
+	rm -rf $(cryptobj) $(srtpobj) $(cryptomath) TAGS \
+        libcryptomath.a libsrtp.a core *.core test/core
+	for a in * */* */*/*; do			\
+              if [ -f "$$a~" ] ; then rm -f $$a~; fi;	\
+        done;
+	for a in $(testapp) $(table_apps); do rm -rf $$a$(EXE); done
+	rm -rf *.pict *.jpg *.dat 
+	rm -rf freed allocated tmp
+	$(MAKE) -C doc clean
+	$(MAKE) -C crypto clean
+
+
+superclean: clean
+	rm -rf crypto/include/config.h config.log config.cache config.status \
+               Makefile .gdb_history test/.gdb_history .DS_Store
+	rm -rf autom4te.cache
+
+distname = srtp-$(shell cat VERSION)
+
+distribution: runtest superclean 
+	if ! [ -f VERSION ]; then exit 1; fi
+	if [ -f ../$(distname).tgz ]; then               \
+           mv ../$(distname).tgz ../$(distname).tgz.bak; \
+        fi
+	cd ..; tar cvzf $(distname).tgz srtp
+
+# EOF
diff --git a/NOTICE b/NOTICE
new file mode 100644
index 0000000..494947d
--- /dev/null
+++ b/NOTICE
@@ -0,0 +1,35 @@
+/*
+ *
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..18e6d5f
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,5 @@
+astor
+hta
+juberti
+mikaelp
+tschmelcher
diff --git a/README b/README
new file mode 100644
index 0000000..08fafae
--- /dev/null
+++ b/README
@@ -0,0 +1,174 @@
+Secure RTP (SRTP) Reference Implementation
+David A. McGrew
+Cisco Systems, Inc.
+mcgrew@cisco.com
+
+
+This package provides an implementation of the Secure Real-time
+Transport Protocol (SRTP), the Universal Security Transform (UST), and
+a supporting cryptographic kernel.  These mechanisms are documented in
+the Internet Drafts in the doc/ subdirectory.  The SRTP API is
+documented in include/srtp.h, and the library is in libsrtp.a (after
+compilation).  An overview and reference manual is available in
+doc/libsrtp.pdf.  The PDF documentation is more up to date than this
+file.
+
+
+Installation:
+
+./configure [ options ]       # GNU autoconf script 
+make                          # or gmake if needed; use GNU make
+
+The configure script accepts the following options:
+
+   --help              provides a usage summary
+   --disable-debug     compile without the runtime debugging system
+   --enable-syslog     use syslog for error reporting
+   --disable-stdout    use stdout for error reporting
+   --enable-console    use /dev/console for error reporting
+   --gdoi              use GDOI key management (disabled at present)
+
+By default, debbuging is enabled and stdout is used for debugging.
+You can use the above configure options to have the debugging output
+sent to syslog or the system console.  Alternatively, you can define
+ERR_REPORTING_FILE in include/conf.h to be any other file that can be
+opened by libSRTP, and debug messages will be sent to it.  
+
+This package has been tested on Mac OS X (powerpc-apple-darwin1.4),
+Cygwin (i686-pc-cygwin), and Sparc (sparc-sun-solaris2.6).  Previous
+versions have been tested on Linux and OpenBSD on both x86 and sparc
+platforms.
+
+A quick tour of this package:
+
+Makefile		targets: all, clean, ...
+README			this file
+CHANGES                 change log 
+VERSION			version number of this package
+LICENSE                 legal details (it's a BSD-like license)
+crypto/ciphers/		ciphers (null, aes_icm, ...)
+crypto/math/		crypto math routines
+crypto/hash/            crypto hashing (hmac, tmmhv2, ...)
+crypto/replay/		replay protection
+doc/			documentation: rfcs, apis, and suchlike
+include/		include files for all code in distribution
+srtp/			secure real-time transport protocol implementation
+tables/                 apps for generating tables (useful in porting)
+test/			test drivers 
+
+
+Applications
+
+  Several test drivers and a simple and portable srtp application
+  are included in the test/ subdirectory.
+
+  test driver	function tested	
+  -------------------------------------------------------------
+  kernel_driver crypto kernel (ciphers, auth funcs, rng)
+  srtp_driver	srtp in-memory tests (does not use the network)
+  rdbx_driver	rdbx (extended replay database)
+  roc_driver	extended sequence number functions 
+  replay_driver	replay database (n.b. not used in libsrtp)
+  cipher_driver	ciphers 
+  auth_driver	hash functions 
+
+  The app rtpw is a simple rtp application which reads words from
+  /usr/dict/words and then sends them out one at a time using [s]rtp.
+  Manual srtp keying uses the -k option; automated key management
+  using gdoi will be added later.
+
+usage: rtpw [-d <debug>]* [-k <key> [-a][-e]] [-s | -r] dest_ip dest_port
+or     rtpw -l
+
+  Either the -s (sender) or -r (receiver) option must be chosen.
+
+  The values dest_ip, dest_port are the ip address and udp port to
+  which the dictionary will be sent, respectively.  
+
+  options:
+
+  -s		(s)rtp sender - causes app to send words
+
+  -r		(s)rtp receive - causes app to receve words
+
+  -k <key>      use srtp master key <key>, where the
+		key is a hexadecimal value (without the
+                leading "0x")
+
+  -e            encrypt/decrypt (for data confidentiality)
+                (requires use of -k option as well)
+
+  -a            message authentication 
+                (requires use of -k option as well)
+
+  -l            list debug modules
+
+  -d <debug>    turn on debugging for module <debug>
+
+
+In order to get random 30-byte values for use as key/salt pairs , you
+can use the following bash function to format the output of
+/dev/random (where that device is available).
+
+function randhex() {
+   cat /dev/random | od --read-bytes=32 --width=32 -x | awk '{ print $2 $3 $4 $5 $6 $7 $8 $9 $10 $11 $12 $13 $14 $15 $16 }'
+}
+
+
+An example of an SRTP session using two rtpw programs follows:
+
+set k=c1eec3717da76195bb878578790af71c4ee9f859e197a414a78d5abc7451
+
+[sh1]$ test/rtpw -s -k $k -ea 0.0.0.0 9999 
+Security services: confidentiality message authentication
+set master key/salt to C1EEC3717DA76195BB878578790AF71C/4EE9F859E197A414A78D5ABC7451
+setting SSRC to 2078917053
+sending word: A
+sending word: a
+sending word: aa
+sending word: aal
+...
+
+[sh2]$ test/rtpw -r -k $k -ea 0.0.0.0 9999 
+security services: confidentiality message authentication
+set master key/salt to C1EEC3717DA76195BB878578790AF71C/4EE9F859E197A414A78D5ABC7451
+19 octets received from SSRC 2078917053 word: A
+19 octets received from SSRC 2078917053 word: a
+20 octets received from SSRC 2078917053 word: aa
+21 octets received from SSRC 2078917053 word: aal
+...
+
+Implementation Notes
+
+  * The srtp_protect() function assumes that the buffer holding the
+    rtp packet has enough storage allocated that the authentication 
+    tag can be written to the end of that packet.  If this assumption
+    is not valid, memory corruption will ensue.  
+
+  * Automated tests for the crypto functions are provided through
+    the cipher_type_self_test() and auth_type_self_test() functions.
+    These functions should be used to test each port of this code 
+    to a new platform.
+
+  * Replay protection is contained in the crypto engine, and
+    tests for it are provided.
+
+  * This implementation provides calls to initialize, protect, and
+    unprotect RTP packets, and makes as few as possible assumptions
+    about how these functions will be called.  For example, the
+    caller is not expected to provide packets in order (though if
+    they're called more than 65k out of sequence, synchronization
+    will be lost).
+    
+  * The sequence number in the rtp packet is used as the low 16 bits
+    of the sender's local packet index. Note that RTP will start its
+    sequence number in a random place, and the SRTP layer just jumps
+    forward to that number at its first invocation.  An earlier
+    version of this library used initial sequence numbers that are
+    less than 32,768; this trick is no longer required as the
+    rdbx_estimate_index(...) function has been made smarter.
+
+  * The replay window is 128 bits in length, and is hard-coded to this
+    value for now.  
+
+
diff --git a/TODO b/TODO
new file mode 100644
index 0000000..18846e8
--- /dev/null
+++ b/TODO
@@ -0,0 +1,66 @@
+TODO List
+
+1.4.1
+
+  - document which fields are in NBO/HBO, and check for consistency.
+
+  - move HAVE_U_LONG_LONG inside of datatypes.c, or some other
+    separate file
+
+  - re-write configure.in to make cross-compilation easier
+
+  - eliminate GENERIC_AESICM by generalizing the code a bit
+
+Older comments
+
+  - add tests for key_limit_t datatype 
+
+  - move octet_get_weight() from datatypes.c to math.c (any other
+    funcs?)
+
+Changes and additions planned
+
+  Make cipher and auth dealloc() functions zeroize the key-storage
+  areas before calling free().
+
+  Eliminate key_len from auth_init()
+
+  Doucument internal APIs (cipher, auth, srtp_protect, ...)
+
+
+SRTP options not (yet) included in this libaray:
+
+ - the aes-f8-mode cipher
+ - the Master Key Index
+ - re-keying using the key derivation function (only the initial
+   use of the PRF has been implemented, as it's sufficient
+   for most uses)
+
+
+(OLD) PLANNED CHANGES
+
+   strip out test/lfsr.c
+
+   Write new documentation!!!
+
+   Fix the x86 assembly code in aes.c.
+
+   Eliminate /* DAM */ - there's one in srtp.c
+
+   Change debugging so that it can print more than one line.  Or perhaps
+   just change it so that a single check of the debug-enabled flag is
+   needed.
+
+   Improve interface between cipher and rdbx - perhaps generalize rdbx
+   into 'nonce' datatype.
+
+   Make rijndael_icm accept variable sized keys.
+
+   Add rdbx functions that allow different-sized explicit sequence
+   numbers to be used.
+
+   Write uniform byte-buffering code for PRFs, preferably as macros.
+
+   Consider eliminating low-level alloc functions in favor of len()
+   functions, so that there need not be multiple allocations within a
+   particular alloc() function.
diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..1c99cf0
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+1.4.4
diff --git a/config.guess b/config.guess
new file mode 100755
index 0000000..7d0185e
--- /dev/null
+++ b/config.guess
@@ -0,0 +1,1447 @@
+#! /bin/sh
+# Attempt to guess a canonical system name.
+#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+#   2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+
+timestamp='2004-09-07'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Originally written by Per Bothner <per@bothner.com>.
+# Please send patches to <config-patches@gnu.org>.  Submit a context
+# diff and a properly formatted ChangeLog entry.
+#
+# This script attempts to guess a canonical system name similar to
+# config.sub.  If it succeeds, it prints the system name on stdout, and
+# exits with 0.  Otherwise, it exits with 1.
+#
+# The plan is that this can be called by configure scripts if you
+# don't specify an explicit build system type.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION]
+
+Output the configuration name of the system \`$me' is run on.
+
+Operation modes:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.guess ($timestamp)
+
+Originally written by Per Bothner.
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit 0 ;;
+    --version | -v )
+       echo "$version" ; exit 0 ;;
+    --help | --h* | -h )
+       echo "$usage"; exit 0 ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+    * )
+       break ;;
+  esac
+done
+
+if test $# != 0; then
+  echo "$me: too many arguments$help" >&2
+  exit 1
+fi
+
+trap 'exit 1' 1 2 15
+
+# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
+# compiler to aid in system detection is discouraged as it requires
+# temporary files to be created and, as you can see below, it is a
+# headache to deal with in a portable fashion.
+
+# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
+# use `HOST_CC' if defined, but it is deprecated.
+
+# Portable tmp directory creation inspired by the Autoconf team.
+
+set_cc_for_build='
+trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ;
+trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ;
+: ${TMPDIR=/tmp} ;
+ { tmp=`(umask 077 && mktemp -d -q "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
+ { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } ||
+ { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } ||
+ { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ;
+dummy=$tmp/dummy ;
+tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ;
+case $CC_FOR_BUILD,$HOST_CC,$CC in
+ ,,)    echo "int x;" > $dummy.c ;
+	for c in cc gcc c89 c99 ; do
+	  if ($c -c -o $dummy.o $dummy.c) >/dev/null 2>&1 ; then
+	     CC_FOR_BUILD="$c"; break ;
+	  fi ;
+	done ;
+	if test x"$CC_FOR_BUILD" = x ; then
+	  CC_FOR_BUILD=no_compiler_found ;
+	fi
+	;;
+ ,,*)   CC_FOR_BUILD=$CC ;;
+ ,*,*)  CC_FOR_BUILD=$HOST_CC ;;
+esac ;'
+
+# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
+# (ghazi@noc.rutgers.edu 1994-08-24)
+if (test -f /.attbin/uname) >/dev/null 2>&1 ; then
+	PATH=$PATH:/.attbin ; export PATH
+fi
+
+UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
+UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
+UNAME_SYSTEM=`(uname -s) 2>/dev/null`  || UNAME_SYSTEM=unknown
+UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
+
+# Note: order is significant - the case branches are not exclusive.
+
+case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
+    *:NetBSD:*:*)
+	# NetBSD (nbsd) targets should (where applicable) match one or
+	# more of the tupples: *-*-netbsdelf*, *-*-netbsdaout*,
+	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
+	# switched to ELF, *-*-netbsd* would select the old
+	# object file format.  This provides both forward
+	# compatibility and a consistent mechanism for selecting the
+	# object file format.
+	#
+	# Note: NetBSD doesn't particularly care about the vendor
+	# portion of the name.  We always set it to "unknown".
+	sysctl="sysctl -n hw.machine_arch"
+	UNAME_MACHINE_ARCH=`(/sbin/$sysctl 2>/dev/null || \
+	    /usr/sbin/$sysctl 2>/dev/null || echo unknown)`
+	case "${UNAME_MACHINE_ARCH}" in
+	    armeb) machine=armeb-unknown ;;
+	    arm*) machine=arm-unknown ;;
+	    sh3el) machine=shl-unknown ;;
+	    sh3eb) machine=sh-unknown ;;
+	    *) machine=${UNAME_MACHINE_ARCH}-unknown ;;
+	esac
+	# The Operating System including object format, if it has switched
+	# to ELF recently, or will in the future.
+	case "${UNAME_MACHINE_ARCH}" in
+	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
+		eval $set_cc_for_build
+		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
+			| grep __ELF__ >/dev/null
+		then
+		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
+		    # Return netbsd for either.  FIX?
+		    os=netbsd
+		else
+		    os=netbsdelf
+		fi
+		;;
+	    *)
+	        os=netbsd
+		;;
+	esac
+	# The OS release
+	# Debian GNU/NetBSD machines have a different userland, and
+	# thus, need a distinct triplet. However, they do not need
+	# kernel version information, so it can be replaced with a
+	# suitable tag, in the style of linux-gnu.
+	case "${UNAME_VERSION}" in
+	    Debian*)
+		release='-gnu'
+		;;
+	    *)
+		release=`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
+		;;
+	esac
+	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
+	# contains redundant information, the shorter form:
+	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
+	echo "${machine}-${os}${release}"
+	exit 0 ;;
+    amd64:OpenBSD:*:*)
+	echo x86_64-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    amiga:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    cats:OpenBSD:*:*)
+	echo arm-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    hp300:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    luna88k:OpenBSD:*:*)
+    	echo m88k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    mac68k:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    macppc:OpenBSD:*:*)
+	echo powerpc-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    mvme68k:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    mvme88k:OpenBSD:*:*)
+	echo m88k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    mvmeppc:OpenBSD:*:*)
+	echo powerpc-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    sgi:OpenBSD:*:*)
+	echo mips64-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    sun3:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    *:OpenBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    *:ekkoBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
+	exit 0 ;;
+    macppc:MirBSD:*:*)
+	echo powerppc-unknown-mirbsd${UNAME_RELEASE}
+	exit 0 ;;
+    *:MirBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE}
+	exit 0 ;;
+    alpha:OSF1:*:*)
+	case $UNAME_RELEASE in
+	*4.0)
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
+		;;
+	*5.*)
+	        UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+		;;
+	esac
+	# According to Compaq, /usr/sbin/psrinfo has been available on
+	# OSF/1 and Tru64 systems produced since 1995.  I hope that
+	# covers most systems running today.  This code pipes the CPU
+	# types through head -n 1, so we only detect the type of CPU 0.
+	ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1`
+	case "$ALPHA_CPU_TYPE" in
+	    "EV4 (21064)")
+		UNAME_MACHINE="alpha" ;;
+	    "EV4.5 (21064)")
+		UNAME_MACHINE="alpha" ;;
+	    "LCA4 (21066/21068)")
+		UNAME_MACHINE="alpha" ;;
+	    "EV5 (21164)")
+		UNAME_MACHINE="alphaev5" ;;
+	    "EV5.6 (21164A)")
+		UNAME_MACHINE="alphaev56" ;;
+	    "EV5.6 (21164PC)")
+		UNAME_MACHINE="alphapca56" ;;
+	    "EV5.7 (21164PC)")
+		UNAME_MACHINE="alphapca57" ;;
+	    "EV6 (21264)")
+		UNAME_MACHINE="alphaev6" ;;
+	    "EV6.7 (21264A)")
+		UNAME_MACHINE="alphaev67" ;;
+	    "EV6.8CB (21264C)")
+		UNAME_MACHINE="alphaev68" ;;
+	    "EV6.8AL (21264B)")
+		UNAME_MACHINE="alphaev68" ;;
+	    "EV6.8CX (21264D)")
+		UNAME_MACHINE="alphaev68" ;;
+	    "EV6.9A (21264/EV69A)")
+		UNAME_MACHINE="alphaev69" ;;
+	    "EV7 (21364)")
+		UNAME_MACHINE="alphaev7" ;;
+	    "EV7.9 (21364A)")
+		UNAME_MACHINE="alphaev79" ;;
+	esac
+	# A Pn.n version is a patched version.
+	# A Vn.n version is a released version.
+	# A Tn.n version is a released field test version.
+	# A Xn.n version is an unreleased experimental baselevel.
+	# 1.2 uses "1.2" for uname -r.
+	echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+	exit 0 ;;
+    Alpha\ *:Windows_NT*:*)
+	# How do we know it's Interix rather than the generic POSIX subsystem?
+	# Should we change UNAME_MACHINE based on the output of uname instead
+	# of the specific Alpha model?
+	echo alpha-pc-interix
+	exit 0 ;;
+    21064:Windows_NT:50:3)
+	echo alpha-dec-winnt3.5
+	exit 0 ;;
+    Amiga*:UNIX_System_V:4.0:*)
+	echo m68k-unknown-sysv4
+	exit 0;;
+    *:[Aa]miga[Oo][Ss]:*:*)
+	echo ${UNAME_MACHINE}-unknown-amigaos
+	exit 0 ;;
+    *:[Mm]orph[Oo][Ss]:*:*)
+	echo ${UNAME_MACHINE}-unknown-morphos
+	exit 0 ;;
+    *:OS/390:*:*)
+	echo i370-ibm-openedition
+	exit 0 ;;
+    *:OS400:*:*)
+        echo powerpc-ibm-os400
+	exit 0 ;;
+    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
+	echo arm-acorn-riscix${UNAME_RELEASE}
+	exit 0;;
+    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
+	echo hppa1.1-hitachi-hiuxmpp
+	exit 0;;
+    Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
+	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
+	if test "`(/bin/universe) 2>/dev/null`" = att ; then
+		echo pyramid-pyramid-sysv3
+	else
+		echo pyramid-pyramid-bsd
+	fi
+	exit 0 ;;
+    NILE*:*:*:dcosx)
+	echo pyramid-pyramid-svr4
+	exit 0 ;;
+    DRS?6000:unix:4.0:6*)
+	echo sparc-icl-nx6
+	exit 0 ;;
+    DRS?6000:UNIX_SV:4.2*:7*)
+	case `/usr/bin/uname -p` in
+	    sparc) echo sparc-icl-nx7 && exit 0 ;;
+	esac ;;
+    sun4H:SunOS:5.*:*)
+	echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
+	echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    i86pc:SunOS:5.*:*)
+	echo i386-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    sun4*:SunOS:6*:*)
+	# According to config.sub, this is the proper way to canonicalize
+	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
+	# it's likely to be more like Solaris than SunOS4.
+	echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    sun4*:SunOS:*:*)
+	case "`/usr/bin/arch -k`" in
+	    Series*|S4*)
+		UNAME_RELEASE=`uname -v`
+		;;
+	esac
+	# Japanese Language versions have a version number like `4.1.3-JL'.
+	echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'`
+	exit 0 ;;
+    sun3*:SunOS:*:*)
+	echo m68k-sun-sunos${UNAME_RELEASE}
+	exit 0 ;;
+    sun*:*:4.2BSD:*)
+	UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
+	test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3
+	case "`/bin/arch`" in
+	    sun3)
+		echo m68k-sun-sunos${UNAME_RELEASE}
+		;;
+	    sun4)
+		echo sparc-sun-sunos${UNAME_RELEASE}
+		;;
+	esac
+	exit 0 ;;
+    aushp:SunOS:*:*)
+	echo sparc-auspex-sunos${UNAME_RELEASE}
+	exit 0 ;;
+    # The situation for MiNT is a little confusing.  The machine name
+    # can be virtually everything (everything which is not
+    # "atarist" or "atariste" at least should have a processor
+    # > m68000).  The system name ranges from "MiNT" over "FreeMiNT"
+    # to the lowercase version "mint" (or "freemint").  Finally
+    # the system name "TOS" denotes a system which is actually not
+    # MiNT.  But MiNT is downward compatible to TOS, so this should
+    # be no problem.
+    atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
+        echo m68k-atari-mint${UNAME_RELEASE}
+	exit 0 ;;
+    atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
+	echo m68k-atari-mint${UNAME_RELEASE}
+        exit 0 ;;
+    *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
+        echo m68k-atari-mint${UNAME_RELEASE}
+	exit 0 ;;
+    milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
+        echo m68k-milan-mint${UNAME_RELEASE}
+        exit 0 ;;
+    hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
+        echo m68k-hades-mint${UNAME_RELEASE}
+        exit 0 ;;
+    *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
+        echo m68k-unknown-mint${UNAME_RELEASE}
+        exit 0 ;;
+    m68k:machten:*:*)
+	echo m68k-apple-machten${UNAME_RELEASE}
+	exit 0 ;;
+    powerpc:machten:*:*)
+	echo powerpc-apple-machten${UNAME_RELEASE}
+	exit 0 ;;
+    RISC*:Mach:*:*)
+	echo mips-dec-mach_bsd4.3
+	exit 0 ;;
+    RISC*:ULTRIX:*:*)
+	echo mips-dec-ultrix${UNAME_RELEASE}
+	exit 0 ;;
+    VAX*:ULTRIX*:*:*)
+	echo vax-dec-ultrix${UNAME_RELEASE}
+	exit 0 ;;
+    2020:CLIX:*:* | 2430:CLIX:*:*)
+	echo clipper-intergraph-clix${UNAME_RELEASE}
+	exit 0 ;;
+    mips:*:*:UMIPS | mips:*:*:RISCos)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+#ifdef __cplusplus
+#include <stdio.h>  /* for printf() prototype */
+	int main (int argc, char *argv[]) {
+#else
+	int main (argc, argv) int argc; char *argv[]; {
+#endif
+	#if defined (host_mips) && defined (MIPSEB)
+	#if defined (SYSTYPE_SYSV)
+	  printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_SVR4)
+	  printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
+	  printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0);
+	#endif
+	#endif
+	  exit (-1);
+	}
+EOF
+	$CC_FOR_BUILD -o $dummy $dummy.c \
+	  && $dummy `echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` \
+	  && exit 0
+	echo mips-mips-riscos${UNAME_RELEASE}
+	exit 0 ;;
+    Motorola:PowerMAX_OS:*:*)
+	echo powerpc-motorola-powermax
+	exit 0 ;;
+    Motorola:*:4.3:PL8-*)
+	echo powerpc-harris-powermax
+	exit 0 ;;
+    Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
+	echo powerpc-harris-powermax
+	exit 0 ;;
+    Night_Hawk:Power_UNIX:*:*)
+	echo powerpc-harris-powerunix
+	exit 0 ;;
+    m88k:CX/UX:7*:*)
+	echo m88k-harris-cxux7
+	exit 0 ;;
+    m88k:*:4*:R4*)
+	echo m88k-motorola-sysv4
+	exit 0 ;;
+    m88k:*:3*:R3*)
+	echo m88k-motorola-sysv3
+	exit 0 ;;
+    AViiON:dgux:*:*)
+        # DG/UX returns AViiON for all architectures
+        UNAME_PROCESSOR=`/usr/bin/uname -p`
+	if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
+	then
+	    if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
+	       [ ${TARGET_BINARY_INTERFACE}x = x ]
+	    then
+		echo m88k-dg-dgux${UNAME_RELEASE}
+	    else
+		echo m88k-dg-dguxbcs${UNAME_RELEASE}
+	    fi
+	else
+	    echo i586-dg-dgux${UNAME_RELEASE}
+	fi
+ 	exit 0 ;;
+    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
+	echo m88k-dolphin-sysv3
+	exit 0 ;;
+    M88*:*:R3*:*)
+	# Delta 88k system running SVR3
+	echo m88k-motorola-sysv3
+	exit 0 ;;
+    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
+	echo m88k-tektronix-sysv3
+	exit 0 ;;
+    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
+	echo m68k-tektronix-bsd
+	exit 0 ;;
+    *:IRIX*:*:*)
+	echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'`
+	exit 0 ;;
+    ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
+	echo romp-ibm-aix      # uname -m gives an 8 hex-code CPU id
+	exit 0 ;;              # Note that: echo "'`uname -s`'" gives 'AIX '
+    i*86:AIX:*:*)
+	echo i386-ibm-aix
+	exit 0 ;;
+    ia64:AIX:*:*)
+	if [ -x /usr/bin/oslevel ] ; then
+		IBM_REV=`/usr/bin/oslevel`
+	else
+		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+	fi
+	echo ${UNAME_MACHINE}-ibm-aix${IBM_REV}
+	exit 0 ;;
+    *:AIX:2:3)
+	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
+		eval $set_cc_for_build
+		sed 's/^		//' << EOF >$dummy.c
+		#include <sys/systemcfg.h>
+
+		main()
+			{
+			if (!__power_pc())
+				exit(1);
+			puts("powerpc-ibm-aix3.2.5");
+			exit(0);
+			}
+EOF
+		$CC_FOR_BUILD -o $dummy $dummy.c && $dummy && exit 0
+		echo rs6000-ibm-aix3.2.5
+	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
+		echo rs6000-ibm-aix3.2.4
+	else
+		echo rs6000-ibm-aix3.2
+	fi
+	exit 0 ;;
+    *:AIX:*:[45])
+	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
+	if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
+		IBM_ARCH=rs6000
+	else
+		IBM_ARCH=powerpc
+	fi
+	if [ -x /usr/bin/oslevel ] ; then
+		IBM_REV=`/usr/bin/oslevel`
+	else
+		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+	fi
+	echo ${IBM_ARCH}-ibm-aix${IBM_REV}
+	exit 0 ;;
+    *:AIX:*:*)
+	echo rs6000-ibm-aix
+	exit 0 ;;
+    ibmrt:4.4BSD:*|romp-ibm:BSD:*)
+	echo romp-ibm-bsd4.4
+	exit 0 ;;
+    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
+	echo romp-ibm-bsd${UNAME_RELEASE}   # 4.3 with uname added to
+	exit 0 ;;                           # report: romp-ibm BSD 4.3
+    *:BOSX:*:*)
+	echo rs6000-bull-bosx
+	exit 0 ;;
+    DPX/2?00:B.O.S.:*:*)
+	echo m68k-bull-sysv3
+	exit 0 ;;
+    9000/[34]??:4.3bsd:1.*:*)
+	echo m68k-hp-bsd
+	exit 0 ;;
+    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
+	echo m68k-hp-bsd4.4
+	exit 0 ;;
+    9000/[34678]??:HP-UX:*:*)
+	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+	case "${UNAME_MACHINE}" in
+	    9000/31? )            HP_ARCH=m68000 ;;
+	    9000/[34]?? )         HP_ARCH=m68k ;;
+	    9000/[678][0-9][0-9])
+		if [ -x /usr/bin/getconf ]; then
+		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
+                    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+                    case "${sc_cpu_version}" in
+                      523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
+                      528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
+                      532)                      # CPU_PA_RISC2_0
+                        case "${sc_kernel_bits}" in
+                          32) HP_ARCH="hppa2.0n" ;;
+                          64) HP_ARCH="hppa2.0w" ;;
+			  '') HP_ARCH="hppa2.0" ;;   # HP-UX 10.20
+                        esac ;;
+                    esac
+		fi
+		if [ "${HP_ARCH}" = "" ]; then
+		    eval $set_cc_for_build
+		    sed 's/^              //' << EOF >$dummy.c
+
+              #define _HPUX_SOURCE
+              #include <stdlib.h>
+              #include <unistd.h>
+
+              int main ()
+              {
+              #if defined(_SC_KERNEL_BITS)
+                  long bits = sysconf(_SC_KERNEL_BITS);
+              #endif
+                  long cpu  = sysconf (_SC_CPU_VERSION);
+
+                  switch (cpu)
+              	{
+              	case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+              	case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+              	case CPU_PA_RISC2_0:
+              #if defined(_SC_KERNEL_BITS)
+              	    switch (bits)
+              		{
+              		case 64: puts ("hppa2.0w"); break;
+              		case 32: puts ("hppa2.0n"); break;
+              		default: puts ("hppa2.0"); break;
+              		} break;
+              #else  /* !defined(_SC_KERNEL_BITS) */
+              	    puts ("hppa2.0"); break;
+              #endif
+              	default: puts ("hppa1.0"); break;
+              	}
+                  exit (0);
+              }
+EOF
+		    (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
+		    test -z "$HP_ARCH" && HP_ARCH=hppa
+		fi ;;
+	esac
+	if [ ${HP_ARCH} = "hppa2.0w" ]
+	then
+	    # avoid double evaluation of $set_cc_for_build
+	    test -n "$CC_FOR_BUILD" || eval $set_cc_for_build
+	    if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E -) | grep __LP64__ >/dev/null
+	    then
+		HP_ARCH="hppa2.0w"
+	    else
+		HP_ARCH="hppa64"
+	    fi
+	fi
+	echo ${HP_ARCH}-hp-hpux${HPUX_REV}
+	exit 0 ;;
+    ia64:HP-UX:*:*)
+	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+	echo ia64-hp-hpux${HPUX_REV}
+	exit 0 ;;
+    3050*:HI-UX:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#include <unistd.h>
+	int
+	main ()
+	{
+	  long cpu = sysconf (_SC_CPU_VERSION);
+	  /* The order matters, because CPU_IS_HP_MC68K erroneously returns
+	     true for CPU_PA_RISC1_0.  CPU_IS_PA_RISC returns correct
+	     results, however.  */
+	  if (CPU_IS_PA_RISC (cpu))
+	    {
+	      switch (cpu)
+		{
+		  case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
+		  default: puts ("hppa-hitachi-hiuxwe2"); break;
+		}
+	    }
+	  else if (CPU_IS_HP_MC68K (cpu))
+	    puts ("m68k-hitachi-hiuxwe2");
+	  else puts ("unknown-hitachi-hiuxwe2");
+	  exit (0);
+	}
+EOF
+	$CC_FOR_BUILD -o $dummy $dummy.c && $dummy && exit 0
+	echo unknown-hitachi-hiuxwe2
+	exit 0 ;;
+    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* )
+	echo hppa1.1-hp-bsd
+	exit 0 ;;
+    9000/8??:4.3bsd:*:*)
+	echo hppa1.0-hp-bsd
+	exit 0 ;;
+    *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
+	echo hppa1.0-hp-mpeix
+	exit 0 ;;
+    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* )
+	echo hppa1.1-hp-osf
+	exit 0 ;;
+    hp8??:OSF1:*:*)
+	echo hppa1.0-hp-osf
+	exit 0 ;;
+    i*86:OSF1:*:*)
+	if [ -x /usr/sbin/sysversion ] ; then
+	    echo ${UNAME_MACHINE}-unknown-osf1mk
+	else
+	    echo ${UNAME_MACHINE}-unknown-osf1
+	fi
+	exit 0 ;;
+    parisc*:Lites*:*:*)
+	echo hppa1.1-hp-lites
+	exit 0 ;;
+    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
+	echo c1-convex-bsd
+        exit 0 ;;
+    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+        exit 0 ;;
+    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
+	echo c34-convex-bsd
+        exit 0 ;;
+    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
+	echo c38-convex-bsd
+        exit 0 ;;
+    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
+	echo c4-convex-bsd
+        exit 0 ;;
+    CRAY*Y-MP:*:*:*)
+	echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit 0 ;;
+    CRAY*[A-Z]90:*:*:*)
+	echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \
+	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
+	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
+	      -e 's/\.[^.]*$/.X/'
+	exit 0 ;;
+    CRAY*TS:*:*:*)
+	echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit 0 ;;
+    CRAY*T3E:*:*:*)
+	echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit 0 ;;
+    CRAY*SV1:*:*:*)
+	echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit 0 ;;
+    *:UNICOS/mp:*:*)
+	echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit 0 ;;
+    F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
+	FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+        FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
+        echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+        exit 0 ;;
+    5000:UNIX_System_V:4.*:*)
+        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+        FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
+        echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit 0 ;;
+    i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
+	echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
+	exit 0 ;;
+    sparc*:BSD/OS:*:*)
+	echo sparc-unknown-bsdi${UNAME_RELEASE}
+	exit 0 ;;
+    *:BSD/OS:*:*)
+	echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
+	exit 0 ;;
+    *:FreeBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
+	exit 0 ;;
+    i*:CYGWIN*:*)
+	echo ${UNAME_MACHINE}-pc-cygwin
+	exit 0 ;;
+    i*:MINGW*:*)
+	echo ${UNAME_MACHINE}-pc-mingw32
+	exit 0 ;;
+    i*:PW*:*)
+	echo ${UNAME_MACHINE}-pc-pw32
+	exit 0 ;;
+    x86:Interix*:[34]*)
+	echo i586-pc-interix${UNAME_RELEASE}|sed -e 's/\..*//'
+	exit 0 ;;
+    [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*)
+	echo i${UNAME_MACHINE}-pc-mks
+	exit 0 ;;
+    i*:Windows_NT*:* | Pentium*:Windows_NT*:*)
+	# How do we know it's Interix rather than the generic POSIX subsystem?
+	# It also conflicts with pre-2.0 versions of AT&T UWIN. Should we
+	# UNAME_MACHINE based on the output of uname instead of i386?
+	echo i586-pc-interix
+	exit 0 ;;
+    i*:UWIN*:*)
+	echo ${UNAME_MACHINE}-pc-uwin
+	exit 0 ;;
+    p*:CYGWIN*:*)
+	echo powerpcle-unknown-cygwin
+	exit 0 ;;
+    prep*:SunOS:5.*:*)
+	echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    *:GNU:*:*)
+	# the GNU system
+	echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
+	exit 0 ;;
+    *:GNU/*:*:*)
+	# other systems with GNU libc and userland
+	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu
+	exit 0 ;;
+    i*86:Minix:*:*)
+	echo ${UNAME_MACHINE}-pc-minix
+	exit 0 ;;
+    arm*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    cris:Linux:*:*)
+	echo cris-axis-linux-gnu
+	exit 0 ;;
+    crisv32:Linux:*:*)
+	echo crisv32-axis-linux-gnu
+	exit 0 ;;
+    frv:Linux:*:*)
+    	echo frv-unknown-linux-gnu
+	exit 0 ;;
+    ia64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    m32r*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    m68*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    mips:Linux:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#undef CPU
+	#undef mips
+	#undef mipsel
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	CPU=mipsel
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	CPU=mips
+	#else
+	CPU=
+	#endif
+	#endif
+EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep ^CPU=`
+	test x"${CPU}" != x && echo "${CPU}-unknown-linux-gnu" && exit 0
+	;;
+    mips64:Linux:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#undef CPU
+	#undef mips64
+	#undef mips64el
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	CPU=mips64el
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	CPU=mips64
+	#else
+	CPU=
+	#endif
+	#endif
+EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep ^CPU=`
+	test x"${CPU}" != x && echo "${CPU}-unknown-linux-gnu" && exit 0
+	;;
+    ppc:Linux:*:*)
+	echo powerpc-unknown-linux-gnu
+	exit 0 ;;
+    ppc64:Linux:*:*)
+	echo powerpc64-unknown-linux-gnu
+	exit 0 ;;
+    alpha:Linux:*:*)
+	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
+	  EV5)   UNAME_MACHINE=alphaev5 ;;
+	  EV56)  UNAME_MACHINE=alphaev56 ;;
+	  PCA56) UNAME_MACHINE=alphapca56 ;;
+	  PCA57) UNAME_MACHINE=alphapca56 ;;
+	  EV6)   UNAME_MACHINE=alphaev6 ;;
+	  EV67)  UNAME_MACHINE=alphaev67 ;;
+	  EV68*) UNAME_MACHINE=alphaev68 ;;
+        esac
+	objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null
+	if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
+	echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
+	exit 0 ;;
+    parisc:Linux:*:* | hppa:Linux:*:*)
+	# Look for CPU level
+	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
+	  PA7*) echo hppa1.1-unknown-linux-gnu ;;
+	  PA8*) echo hppa2.0-unknown-linux-gnu ;;
+	  *)    echo hppa-unknown-linux-gnu ;;
+	esac
+	exit 0 ;;
+    parisc64:Linux:*:* | hppa64:Linux:*:*)
+	echo hppa64-unknown-linux-gnu
+	exit 0 ;;
+    s390:Linux:*:* | s390x:Linux:*:*)
+	echo ${UNAME_MACHINE}-ibm-linux
+	exit 0 ;;
+    sh64*:Linux:*:*)
+    	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    sh*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    sparc:Linux:*:* | sparc64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit 0 ;;
+    x86_64:Linux:*:*)
+	echo x86_64-unknown-linux-gnu
+	exit 0 ;;
+    i*86:Linux:*:*)
+	# The BFD linker knows what the default object file format is, so
+	# first see if it will tell us. cd to the root directory to prevent
+	# problems with other programs or directories called `ld' in the path.
+	# Set LC_ALL=C to ensure ld outputs messages in English.
+	ld_supported_targets=`cd /; LC_ALL=C ld --help 2>&1 \
+			 | sed -ne '/supported targets:/!d
+				    s/[ 	][ 	]*/ /g
+				    s/.*supported targets: *//
+				    s/ .*//
+				    p'`
+        case "$ld_supported_targets" in
+	  elf32-i386)
+		TENTATIVE="${UNAME_MACHINE}-pc-linux-gnu"
+		;;
+	  a.out-i386-linux)
+		echo "${UNAME_MACHINE}-pc-linux-gnuaout"
+		exit 0 ;;
+	  coff-i386)
+		echo "${UNAME_MACHINE}-pc-linux-gnucoff"
+		exit 0 ;;
+	  "")
+		# Either a pre-BFD a.out linker (linux-gnuoldld) or
+		# one that does not give us useful --help.
+		echo "${UNAME_MACHINE}-pc-linux-gnuoldld"
+		exit 0 ;;
+	esac
+	# Determine whether the default compiler is a.out or elf
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#include <features.h>
+	#ifdef __ELF__
+	# ifdef __GLIBC__
+	#  if __GLIBC__ >= 2
+	LIBC=gnu
+	#  else
+	LIBC=gnulibc1
+	#  endif
+	# else
+	LIBC=gnulibc1
+	# endif
+	#else
+	#ifdef __INTEL_COMPILER
+	LIBC=gnu
+	#else
+	LIBC=gnuaout
+	#endif
+	#endif
+	#ifdef __dietlibc__
+	LIBC=dietlibc
+	#endif
+EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep ^LIBC=`
+	test x"${LIBC}" != x && echo "${UNAME_MACHINE}-pc-linux-${LIBC}" && exit 0
+	test x"${TENTATIVE}" != x && echo "${TENTATIVE}" && exit 0
+	;;
+    i*86:DYNIX/ptx:4*:*)
+	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
+	# earlier versions are messed up and put the nodename in both
+	# sysname and nodename.
+	echo i386-sequent-sysv4
+	exit 0 ;;
+    i*86:UNIX_SV:4.2MP:2.*)
+        # Unixware is an offshoot of SVR4, but it has its own version
+        # number series starting with 2...
+        # I am not positive that other SVR4 systems won't match this,
+	# I just have to hope.  -- rms.
+        # Use sysv4.2uw... so that sysv4* matches it.
+	echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
+	exit 0 ;;
+    i*86:OS/2:*:*)
+	# If we were able to find `uname', then EMX Unix compatibility
+	# is probably installed.
+	echo ${UNAME_MACHINE}-pc-os2-emx
+	exit 0 ;;
+    i*86:XTS-300:*:STOP)
+	echo ${UNAME_MACHINE}-unknown-stop
+	exit 0 ;;
+    i*86:atheos:*:*)
+	echo ${UNAME_MACHINE}-unknown-atheos
+	exit 0 ;;
+	i*86:syllable:*:*)
+	echo ${UNAME_MACHINE}-pc-syllable
+	exit 0 ;;
+    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*)
+	echo i386-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    i*86:*DOS:*:*)
+	echo ${UNAME_MACHINE}-pc-msdosdjgpp
+	exit 0 ;;
+    i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*)
+	UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'`
+	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
+		echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL}
+	else
+		echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL}
+	fi
+	exit 0 ;;
+    i*86:*:5:[78]*)
+	case `/bin/uname -X | grep "^Machine"` in
+	    *486*)	     UNAME_MACHINE=i486 ;;
+	    *Pentium)	     UNAME_MACHINE=i586 ;;
+	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
+	esac
+	echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
+	exit 0 ;;
+    i*86:*:3.2:*)
+	if test -f /usr/options/cb.name; then
+		UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
+		echo ${UNAME_MACHINE}-pc-isc$UNAME_REL
+	elif /bin/uname -X 2>/dev/null >/dev/null ; then
+		UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
+		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
+		(/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
+			&& UNAME_MACHINE=i586
+		(/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		echo ${UNAME_MACHINE}-pc-sco$UNAME_REL
+	else
+		echo ${UNAME_MACHINE}-pc-sysv32
+	fi
+	exit 0 ;;
+    pc:*:*:*)
+	# Left here for compatibility:
+        # uname -m prints for DJGPP always 'pc', but it prints nothing about
+        # the processor, so we play safe by assuming i386.
+	echo i386-pc-msdosdjgpp
+        exit 0 ;;
+    Intel:Mach:3*:*)
+	echo i386-pc-mach3
+	exit 0 ;;
+    paragon:*:*:*)
+	echo i860-intel-osf1
+	exit 0 ;;
+    i860:*:4.*:*) # i860-SVR4
+	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
+	  echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4
+	else # Add other i860-SVR4 vendors below as they are discovered.
+	  echo i860-unknown-sysv${UNAME_RELEASE}  # Unknown i860-SVR4
+	fi
+	exit 0 ;;
+    mini*:CTIX:SYS*5:*)
+	# "miniframe"
+	echo m68010-convergent-sysv
+	exit 0 ;;
+    mc68k:UNIX:SYSTEM5:3.51m)
+	echo m68k-convergent-sysv
+	exit 0 ;;
+    M680?0:D-NIX:5.3:*)
+	echo m68k-diab-dnix
+	exit 0 ;;
+    M68*:*:R3V[5678]*:*)
+	test -r /sysV68 && echo 'm68k-motorola-sysv' && exit 0 ;;
+    3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
+	OS_REL=''
+	test -r /etc/.relid \
+	&& OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && echo i486-ncr-sysv4.3${OS_REL} && exit 0
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	  && echo i586-ncr-sysv4.3${OS_REL} && exit 0 ;;
+    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
+        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+          && echo i486-ncr-sysv4 && exit 0 ;;
+    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
+	echo m68k-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    mc68030:UNIX_System_V:4.*:*)
+	echo m68k-atari-sysv4
+	exit 0 ;;
+    TSUNAMI:LynxOS:2.*:*)
+	echo sparc-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    rs6000:LynxOS:2.*:*)
+	echo rs6000-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.0*:*)
+	echo powerpc-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    SM[BE]S:UNIX_SV:*:*)
+	echo mips-dde-sysv${UNAME_RELEASE}
+	exit 0 ;;
+    RM*:ReliantUNIX-*:*:*)
+	echo mips-sni-sysv4
+	exit 0 ;;
+    RM*:SINIX-*:*:*)
+	echo mips-sni-sysv4
+	exit 0 ;;
+    *:SINIX-*:*:*)
+	if uname -p 2>/dev/null >/dev/null ; then
+		UNAME_MACHINE=`(uname -p) 2>/dev/null`
+		echo ${UNAME_MACHINE}-sni-sysv4
+	else
+		echo ns32k-sni-sysv
+	fi
+	exit 0 ;;
+    PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+                      # says <Richard.M.Bartel@ccMail.Census.GOV>
+        echo i586-unisys-sysv4
+        exit 0 ;;
+    *:UNIX_System_V:4*:FTX*)
+	# From Gerald Hewes <hewes@openmarket.com>.
+	# How about differentiating between stratus architectures? -djm
+	echo hppa1.1-stratus-sysv4
+	exit 0 ;;
+    *:*:*:FTX*)
+	# From seanf@swdc.stratus.com.
+	echo i860-stratus-sysv4
+	exit 0 ;;
+    *:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	echo hppa1.1-stratus-vos
+	exit 0 ;;
+    mc68*:A/UX:*:*)
+	echo m68k-apple-aux${UNAME_RELEASE}
+	exit 0 ;;
+    news*:NEWS-OS:6*:*)
+	echo mips-sony-newsos6
+	exit 0 ;;
+    R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
+	if [ -d /usr/nec ]; then
+	        echo mips-nec-sysv${UNAME_RELEASE}
+	else
+	        echo mips-unknown-sysv${UNAME_RELEASE}
+	fi
+        exit 0 ;;
+    BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
+	echo powerpc-be-beos
+	exit 0 ;;
+    BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
+	echo powerpc-apple-beos
+	exit 0 ;;
+    BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
+	echo i586-pc-beos
+	exit 0 ;;
+    SX-4:SUPER-UX:*:*)
+	echo sx4-nec-superux${UNAME_RELEASE}
+	exit 0 ;;
+    SX-5:SUPER-UX:*:*)
+	echo sx5-nec-superux${UNAME_RELEASE}
+	exit 0 ;;
+    SX-6:SUPER-UX:*:*)
+	echo sx6-nec-superux${UNAME_RELEASE}
+	exit 0 ;;
+    Power*:Rhapsody:*:*)
+	echo powerpc-apple-rhapsody${UNAME_RELEASE}
+	exit 0 ;;
+    *:Rhapsody:*:*)
+	echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE}
+	exit 0 ;;
+    *:Darwin:*:*)
+	UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
+	case $UNAME_PROCESSOR in
+	    *86) UNAME_PROCESSOR=i686 ;;
+	    unknown) UNAME_PROCESSOR=powerpc ;;
+	esac
+	echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
+	exit 0 ;;
+    *:procnto*:*:* | *:QNX:[0123456789]*:*)
+	UNAME_PROCESSOR=`uname -p`
+	if test "$UNAME_PROCESSOR" = "x86"; then
+		UNAME_PROCESSOR=i386
+		UNAME_MACHINE=pc
+	fi
+	echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE}
+	exit 0 ;;
+    *:QNX:*:4*)
+	echo i386-pc-qnx
+	exit 0 ;;
+    NSR-?:NONSTOP_KERNEL:*:*)
+	echo nsr-tandem-nsk${UNAME_RELEASE}
+	exit 0 ;;
+    *:NonStop-UX:*:*)
+	echo mips-compaq-nonstopux
+	exit 0 ;;
+    BS2000:POSIX*:*:*)
+	echo bs2000-siemens-sysv
+	exit 0 ;;
+    DS/*:UNIX_System_V:*:*)
+	echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE}
+	exit 0 ;;
+    *:Plan9:*:*)
+	# "uname -m" is not consistent, so use $cputype instead. 386
+	# is converted to i386 for consistency with other x86
+	# operating systems.
+	if test "$cputype" = "386"; then
+	    UNAME_MACHINE=i386
+	else
+	    UNAME_MACHINE="$cputype"
+	fi
+	echo ${UNAME_MACHINE}-unknown-plan9
+	exit 0 ;;
+    *:TOPS-10:*:*)
+	echo pdp10-unknown-tops10
+	exit 0 ;;
+    *:TENEX:*:*)
+	echo pdp10-unknown-tenex
+	exit 0 ;;
+    KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
+	echo pdp10-dec-tops20
+	exit 0 ;;
+    XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
+	echo pdp10-xkl-tops20
+	exit 0 ;;
+    *:TOPS-20:*:*)
+	echo pdp10-unknown-tops20
+	exit 0 ;;
+    *:ITS:*:*)
+	echo pdp10-unknown-its
+	exit 0 ;;
+    SEI:*:*:SEIUX)
+        echo mips-sei-seiux${UNAME_RELEASE}
+	exit 0 ;;
+    *:DragonFly:*:*)
+	echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
+	exit 0 ;;
+    *:*VMS:*:*)
+    	UNAME_MACHINE=`(uname -p) 2>/dev/null`
+	case "${UNAME_MACHINE}" in
+	    A*) echo alpha-dec-vms && exit 0 ;;
+	    I*) echo ia64-dec-vms && exit 0 ;;
+	    V*) echo vax-dec-vms && exit 0 ;;
+	esac
+esac
+
+#echo '(No uname command or uname output not recognized.)' 1>&2
+#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2
+
+eval $set_cc_for_build
+cat >$dummy.c <<EOF
+#ifdef _SEQUENT_
+# include <sys/types.h>
+# include <sys/utsname.h>
+#endif
+main ()
+{
+#if defined (sony)
+#if defined (MIPSEB)
+  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
+     I don't know....  */
+  printf ("mips-sony-bsd\n"); exit (0);
+#else
+#include <sys/param.h>
+  printf ("m68k-sony-newsos%s\n",
+#ifdef NEWSOS4
+          "4"
+#else
+	  ""
+#endif
+         ); exit (0);
+#endif
+#endif
+
+#if defined (__arm) && defined (__acorn) && defined (__unix)
+  printf ("arm-acorn-riscix"); exit (0);
+#endif
+
+#if defined (hp300) && !defined (hpux)
+  printf ("m68k-hp-bsd\n"); exit (0);
+#endif
+
+#if defined (NeXT)
+#if !defined (__ARCHITECTURE__)
+#define __ARCHITECTURE__ "m68k"
+#endif
+  int version;
+  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
+  if (version < 4)
+    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
+  else
+    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
+  exit (0);
+#endif
+
+#if defined (MULTIMAX) || defined (n16)
+#if defined (UMAXV)
+  printf ("ns32k-encore-sysv\n"); exit (0);
+#else
+#if defined (CMU)
+  printf ("ns32k-encore-mach\n"); exit (0);
+#else
+  printf ("ns32k-encore-bsd\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (__386BSD__)
+  printf ("i386-pc-bsd\n"); exit (0);
+#endif
+
+#if defined (sequent)
+#if defined (i386)
+  printf ("i386-sequent-dynix\n"); exit (0);
+#endif
+#if defined (ns32000)
+  printf ("ns32k-sequent-dynix\n"); exit (0);
+#endif
+#endif
+
+#if defined (_SEQUENT_)
+    struct utsname un;
+
+    uname(&un);
+
+    if (strncmp(un.version, "V2", 2) == 0) {
+	printf ("i386-sequent-ptx2\n"); exit (0);
+    }
+    if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
+	printf ("i386-sequent-ptx1\n"); exit (0);
+    }
+    printf ("i386-sequent-ptx\n"); exit (0);
+
+#endif
+
+#if defined (vax)
+# if !defined (ultrix)
+#  include <sys/param.h>
+#  if defined (BSD)
+#   if BSD == 43
+      printf ("vax-dec-bsd4.3\n"); exit (0);
+#   else
+#    if BSD == 199006
+      printf ("vax-dec-bsd4.3reno\n"); exit (0);
+#    else
+      printf ("vax-dec-bsd\n"); exit (0);
+#    endif
+#   endif
+#  else
+    printf ("vax-dec-bsd\n"); exit (0);
+#  endif
+# else
+    printf ("vax-dec-ultrix\n"); exit (0);
+# endif
+#endif
+
+#if defined (alliant) && defined (i860)
+  printf ("i860-alliant-bsd\n"); exit (0);
+#endif
+
+  exit (1);
+}
+EOF
+
+$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && $dummy && exit 0
+
+# Apollos put the system type in the environment.
+
+test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit 0; }
+
+# Convex versions that predate uname can use getsysinfo(1)
+
+if [ -x /usr/convex/getsysinfo ]
+then
+    case `getsysinfo -f cpu_type` in
+    c1*)
+	echo c1-convex-bsd
+	exit 0 ;;
+    c2*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+	exit 0 ;;
+    c34*)
+	echo c34-convex-bsd
+	exit 0 ;;
+    c38*)
+	echo c38-convex-bsd
+	exit 0 ;;
+    c4*)
+	echo c4-convex-bsd
+	exit 0 ;;
+    esac
+fi
+
+cat >&2 <<EOF
+$0: unable to guess system type
+
+This script, last modified $timestamp, has failed to recognize
+the operating system you are using. It is advised that you
+download the most up to date version of the config scripts from
+
+    ftp://ftp.gnu.org/pub/gnu/config/
+
+If the version you run ($0) is already up to date, please
+send the following data and any information you think might be
+pertinent to <config-patches@gnu.org> in order to provide the needed
+information to handle your system.
+
+config.guess timestamp = $timestamp
+
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null`
+
+hostinfo               = `(hostinfo) 2>/dev/null`
+/bin/universe          = `(/bin/universe) 2>/dev/null`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null`
+/bin/arch              = `(/bin/arch) 2>/dev/null`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
+
+UNAME_MACHINE = ${UNAME_MACHINE}
+UNAME_RELEASE = ${UNAME_RELEASE}
+UNAME_SYSTEM  = ${UNAME_SYSTEM}
+UNAME_VERSION = ${UNAME_VERSION}
+EOF
+
+exit 1
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/config.h_win32vc7 b/config.h_win32vc7
new file mode 100644
index 0000000..44e6696
--- /dev/null
+++ b/config.h_win32vc7
@@ -0,0 +1,174 @@
+/* Hacked config.h for Windows XP 32-bit & VC7  */
+
+#ifdef (_MSC_VER >= 1400)
+# define HAVE_RAND_S	1
+#endif
+
+/* Define if building for a CISC machine (e.g. Intel). */
+#define CPU_CISC 1
+
+/* Define if building for a RISC machine (assume slow byte access). */
+#undef CPU_RISC
+
+/* Path to random device */
+#undef DEV_URANDOM
+
+/* Define to compile in dynamic debugging system. */
+#undef ENABLE_DEBUGGING
+
+/* Report errors to this file. */
+#undef ERR_REPORTING_FILE
+
+/* Define to use logging to stdout. */
+#undef ERR_REPORTING_STDOUT
+
+/* Define this to use ISMAcryp code. */
+#undef GENERIC_AESICM
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#undef HAVE_ARPA_INET_H
+
+/* Define to 1 if you have the <byteswap.h> header file. */
+#undef HAVE_BYTESWAP_H
+
+/* Define to 1 if you have the `inet_aton' function. */
+#define HAVE_INET_ATON 1
+
+/* Define to 1 if the system has the type `int16_t'. */
+#undef HAVE_INT16_T
+
+/* Define to 1 if the system has the type `int32_t'. */
+#undef HAVE_INT32_T
+
+/* Define to 1 if the system has the type `int8_t'. */
+#undef HAVE_INT8_T
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the `socket' library (-lsocket). */
+#undef HAVE_LIBSOCKET
+
+/* Define to 1 if you have the <machine/types.h> header file. */
+#undef HAVE_MACHINE_TYPES_H
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#undef HAVE_NETINET_IN_H
+
+/* Define to 1 if you have the `socket' function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <syslog.h> header file. */
+#undef HAVE_SYSLOG_H
+
+/* Define to 1 if you have the <sys/int_types.h> header file. */
+#undef HAVE_SYS_INT_TYPES_H
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#undef HAVE_SYS_SOCKET_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#undef HAVE_SYS_UIO_H
+
+/* Define to 1 if the system has the type `uint16_t'. */
+#undef HAVE_UINT16_T
+
+/* Define to 1 if the system has the type `uint32_t'. */
+#undef HAVE_UINT32_T 
+
+/* Define to 1 if the system has the type `uint64_t'. */
+#undef HAVE_UINT64_T
+
+/* Define to 1 if the system has the type `uint8_t'. */
+#undef HAVE_UINT8_T
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the `usleep' function. */
+#define HAVE_USLEEP 1
+
+/* Define to 1 if you have the <windows.h> header file. */
+#define HAVE_WINDOWS_H 1
+
+/* Define to 1 if you have the <winsock2.h> header file. */
+#define HAVE_WINSOCK2_H 1
+
+/* Define to use X86 inlined assembly code */
+#undef HAVE_X86
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* The size of a `unsigned long', as computed by sizeof. */
+#define SIZEOF_UNSIGNED_LONG 4
+
+/* The size of a `unsigned long long', as computed by sizeof. */
+#define SIZEOF_UNSIGNED_LONG_LONG 8
+
+/* Define to use GDOI. */
+#undef SRTP_GDOI
+
+/* Define to compile for kernel contexts. */
+#undef SRTP_KERNEL
+
+/* Define to compile for Linux kernel context. */
+#undef SRTP_KERNEL_LINUX
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Write errors to this file */
+#undef USE_ERR_REPORTING_FILE
+
+/* Define to use syslog logging. */
+#undef USE_SYSLOG
+
+/* Define to 1 if your processor stores words with the most significant byte
+   first (like Motorola and SPARC, unlike Intel and VAX). */
+#undef WORDS_BIGENDIAN
+
+/* Define to empty if `const' does not conform to ANSI C. */
+//#undef const
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+//#ifndef __cplusplus
+//#undef inline
+//#endif
+#define inline __inline
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+//#undef size_t
diff --git a/config.hw b/config.hw
new file mode 100644
index 0000000..39d4e07
--- /dev/null
+++ b/config.hw
@@ -0,0 +1,196 @@
+/* crypto/include/config.h.  Generated by configure.  */
+/* config_in.h.  Generated from configure.in by autoheader.  */
+
+#if (_MSC_VER >= 1400)
+# define HAVE_RAND_S	1
+#endif
+
+/* Define if building for a CISC machine (e.g. Intel). */
+#define CPU_CISC 1
+
+/* Define if building for a RISC machine (assume slow byte access). */
+/* #undef CPU_RISC */
+
+/* Path to random device */
+/* #define DEV_URANDOM "/dev/urandom" */
+
+/* Define to compile in dynamic debugging system. */
+#define ENABLE_DEBUGGING 1
+
+/* Report errors to this file. */
+/* #undef ERR_REPORTING_FILE */
+
+/* Define to use logging to stdout. */
+#define ERR_REPORTING_STDOUT 1
+
+/* Define this to use ISMAcryp code. */
+/* #undef GENERIC_AESICM */
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+/* #undef HAVE_ARPA_INET_H */
+
+/* Define to 1 if you have the <byteswap.h> header file. */
+/* #undef HAVE_BYTESWAP_H */
+
+/* Define to 1 if you have the `inet_aton' function. */
+/* #undef HAVE_INET_ATON */
+
+/* Define to 1 if the system has the type `int16_t'. */
+#define HAVE_INT16_T 1
+
+/* Define to 1 if the system has the type `int32_t'. */
+#define HAVE_INT32_T 1
+
+/* Define to 1 if the system has the type `int8_t'. */
+#define HAVE_INT8_T 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+/* #undef HAVE_INTTYPES_H */
+
+/* Define to 1 if you have the `socket' library (-lsocket). */
+/* #undef HAVE_LIBSOCKET */
+
+/* Define to 1 if you have the <machine/types.h> header file. */
+/* #undef HAVE_MACHINE_TYPES_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+/* #undef HAVE_NETINET_IN_H */
+
+/* Define to 1 if you have the `socket' function. */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+/* #undef HAVE_STDINT_H */
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <syslog.h> header file. */
+/* #undef HAVE_SYSLOG_H */
+
+/* Define to 1 if you have the <sys/int_types.h> header file. */
+/* #undef HAVE_SYS_INT_TYPES_H */
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+/* #undef HAVE_SYS_SOCKET_H */
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+/* #undef HAVE_SYS_UIO_H */
+
+/* Define to 1 if the system has the type `uint16_t'. */
+#define HAVE_UINT16_T 1
+
+/* Define to 1 if the system has the type `uint32_t'. */
+#define HAVE_UINT32_T 1
+
+/* Define to 1 if the system has the type `uint64_t'. */
+#define HAVE_UINT64_T 1
+
+/* Define to 1 if the system has the type `uint8_t'. */
+#define HAVE_UINT8_T 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+/* #undef HAVE_UNISTD_H */
+
+/* Define to 1 if you have the `usleep' function. */
+/* #undef HAVE_USLEEP */
+
+/* Define to 1 if you have the <windows.h> header file. */
+#define HAVE_WINDOWS_H 1
+
+/* Define to 1 if you have the <winsock2.h> header file. */
+#define HAVE_WINSOCK2_H 1
+
+/* Define to use X86 inlined assembly code */
+/* #undef HAVE_X86 */
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME ""
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING ""
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION ""
+
+/* The size of a `unsigned long', as computed by sizeof. */
+#define SIZEOF_UNSIGNED_LONG 4
+
+/* The size of a `unsigned long long', as computed by sizeof. */
+#define SIZEOF_UNSIGNED_LONG_LONG 8
+
+/* Define to use GDOI. */
+/* #undef SRTP_GDOI */
+
+/* Define to compile for kernel contexts. */
+/* #undef SRTP_KERNEL */
+
+/* Define to compile for Linux kernel context. */
+/* #undef SRTP_KERNEL_LINUX */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Write errors to this file */
+/* #undef USE_ERR_REPORTING_FILE */
+
+/* Define to use syslog logging. */
+/* #undef USE_SYSLOG */
+
+/* Define to 1 if your processor stores words with the most significant byte
+   first (like Motorola and SPARC, unlike Intel and VAX). */
+/* #undef WORDS_BIGENDIAN */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define 'inline' to nothing, since the MSVC compiler doesn't support it.  */
+#define inline 
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+#if (_MSC_VER >= 1400) // VC8+
+#ifndef _CRT_SECURE_NO_DEPRECATE
+#define _CRT_SECURE_NO_DEPRECATE
+#endif
+#ifndef _CRT_NONSTDC_NO_DEPRECATE
+#define _CRT_NONSTDC_NO_DEPRECATE
+#endif
+#endif // VC8+
+
+#ifndef uint32_t
+typedef unsigned __int8		uint8_t;
+typedef unsigned __int16	uint16_t;
+typedef unsigned __int32	uint32_t;
+typedef unsigned __int64    uint64_t;
+typedef __int8		int8_t;
+typedef __int16		int16_t;
+typedef __int32		int32_t;
+typedef __int64		int64_t;
+#endif
+
+#ifdef _MSC_VER
+#pragma warning(disable:4311)
+#endif
diff --git a/config.log b/config.log
new file mode 100644
index 0000000..2e1911a
--- /dev/null
+++ b/config.log
@@ -0,0 +1,1130 @@
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by configure, which was
+generated by GNU Autoconf 2.59.  Invocation command line was
+
+  $ ./configure --prefix=/home/astor/localastor/google3/third_party/libsrtp/v1_4_2
+
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = hpgntae-ubiq59.eem.corp.google.com
+uname -m = x86_64
+uname -r = 2.6.18.5-gg47server-xenu-3.1
+uname -s = Linux
+uname -v = #1 SMP Fri May 22 12:54:38 PDT 2009
+
+/usr/bin/uname -p = unknown
+/bin/uname -X     = unknown
+
+/bin/arch              = unknown
+/usr/bin/arch -k       = unknown
+/usr/convex/getsysinfo = unknown
+hostinfo               = unknown
+/bin/machine           = unknown
+/usr/bin/oslevel       = unknown
+/bin/universe          = unknown
+
+PATH: /home/astor/bin
+PATH: /home/astor/software/bin
+PATH: /home/astor/software/usr/bin
+PATH: /home/astor/bin
+PATH: /home/astor/software/bin
+PATH: /home/astor/software/usr/bin
+PATH: /usr/local/symlinks
+PATH: /usr/local/scripts
+PATH: /usr/local/sbin
+PATH: /usr/local/bin
+PATH: /usr/sbin
+PATH: /usr/bin
+PATH: /sbin
+PATH: /bin
+PATH: /usr/bin/X11
+PATH: /opt/alice-1.3/bin
+PATH: /home/build/static/projects/borg
+PATH: /opt/alice-1.3/bin
+PATH: /home/build/static/projects/borg
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+configure:1349: checking for ranlib
+configure:1365: found /usr/bin/ranlib
+configure:1376: result: ranlib
+configure:1434: checking for gcc
+configure:1450: found /usr/bin/gcc
+configure:1460: result: gcc
+configure:1704: checking for C compiler version
+configure:1707: gcc --version </dev/null >&5
+gcc (GCC) 4.2.4 (Ubuntu 4.2.4-1ubuntu4)
+Copyright (C) 2007 Free Software Foundation, Inc.
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+configure:1710: $? = 0
+configure:1712: gcc -v </dev/null >&5
+Using built-in specs.
+Target: x86_64-linux-gnu
+Configured with: ../src/configure -v --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.2 --program-suffix=-4.2 --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-mpfr --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
+Thread model: posix
+gcc version 4.2.4 (Ubuntu 4.2.4-1ubuntu4)
+configure:1715: $? = 0
+configure:1717: gcc -V </dev/null >&5
+gcc: '-V' option must have argument
+configure:1720: $? = 1
+configure:1743: checking for C compiler default output file name
+configure:1746: gcc -Wall -O4 -fexpensive-optimizations -funroll-loops   conftest.c  >&5
+configure:1749: $? = 0
+configure:1795: result: a.out
+configure:1800: checking whether the C compiler works
+configure:1806: ./a.out
+configure:1809: $? = 0
+configure:1826: result: yes
+configure:1833: checking whether we are cross compiling
+configure:1835: result: no
+configure:1838: checking for suffix of executables
+configure:1840: gcc -o conftest -Wall -O4 -fexpensive-optimizations -funroll-loops   conftest.c  >&5
+configure:1843: $? = 0
+configure:1868: result: 
+configure:1874: checking for suffix of object files
+configure:1895: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:1898: $? = 0
+configure:1920: result: o
+configure:1924: checking whether we are using the GNU C compiler
+configure:1948: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:1954: $? = 0
+configure:1958: test -z 
+			 || test ! -s conftest.err
+configure:1961: $? = 0
+configure:1964: test -s conftest.o
+configure:1967: $? = 0
+configure:1980: result: yes
+configure:1986: checking whether gcc accepts -g
+configure:2007: gcc -c -g  conftest.c >&5
+configure:2013: $? = 0
+configure:2017: test -z 
+			 || test ! -s conftest.err
+configure:2020: $? = 0
+configure:2023: test -s conftest.o
+configure:2026: $? = 0
+configure:2037: result: yes
+configure:2054: checking for gcc option to accept ANSI C
+configure:2124: gcc  -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:2130: $? = 0
+configure:2134: test -z 
+			 || test ! -s conftest.err
+configure:2137: $? = 0
+configure:2140: test -s conftest.o
+configure:2143: $? = 0
+configure:2161: result: none needed
+configure:2179: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+conftest.c:2: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'me'
+configure:2185: $? = 1
+configure: failed program was:
+| #ifndef __cplusplus
+|   choke me
+| #endif
+configure:2356: checking for a BSD-compatible install
+configure:2411: result: /usr/bin/install -c
+configure:2436: checking whether to build for Linux kernel context
+configure:2450: result: no
+configure:2454: checking for /dev/urandom
+configure:2469: result: yes
+configure:2499: checking which random device to use
+configure:2513: result: /dev/urandom
+configure:2529: checking how to run the C preprocessor
+configure:2564: gcc -E  conftest.c
+configure:2570: $? = 0
+configure:2602: gcc -E  conftest.c
+conftest.c:10:28: error: ac_nonexistent.h: No such file or directory
+configure:2608: $? = 1
+configure: failed program was:
+| /* confdefs.h.  */
+| 
+| #define PACKAGE_NAME ""
+| #define PACKAGE_TARNAME ""
+| #define PACKAGE_VERSION ""
+| #define PACKAGE_STRING ""
+| #define PACKAGE_BUGREPORT ""
+| #define DEV_URANDOM "/dev/urandom"
+| /* end confdefs.h.  */
+| #include <ac_nonexistent.h>
+configure:2647: result: gcc -E
+configure:2671: gcc -E  conftest.c
+configure:2677: $? = 0
+configure:2709: gcc -E  conftest.c
+conftest.c:10:28: error: ac_nonexistent.h: No such file or directory
+configure:2715: $? = 1
+configure: failed program was:
+| /* confdefs.h.  */
+| 
+| #define PACKAGE_NAME ""
+| #define PACKAGE_TARNAME ""
+| #define PACKAGE_VERSION ""
+| #define PACKAGE_STRING ""
+| #define PACKAGE_BUGREPORT ""
+| #define DEV_URANDOM "/dev/urandom"
+| /* end confdefs.h.  */
+| #include <ac_nonexistent.h>
+configure:2759: checking for egrep
+configure:2769: result: grep -E
+configure:2774: checking for ANSI C header files
+configure:2799: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:2805: $? = 0
+configure:2809: test -z 
+			 || test ! -s conftest.err
+configure:2812: $? = 0
+configure:2815: test -s conftest.o
+configure:2818: $? = 0
+configure:2907: gcc -o conftest -Wall -O4 -fexpensive-optimizations -funroll-loops   conftest.c  >&5
+conftest.c: In function 'main':
+conftest.c:27: warning: implicit declaration of function 'exit'
+conftest.c:27: warning: incompatible implicit declaration of built-in function 'exit'
+configure:2910: $? = 0
+configure:2912: ./conftest
+configure:2915: $? = 0
+configure:2930: result: yes
+configure:2954: checking for sys/types.h
+configure:2970: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:2976: $? = 0
+configure:2980: test -z 
+			 || test ! -s conftest.err
+configure:2983: $? = 0
+configure:2986: test -s conftest.o
+configure:2989: $? = 0
+configure:3000: result: yes
+configure:2954: checking for sys/stat.h
+configure:2970: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:2976: $? = 0
+configure:2980: test -z 
+			 || test ! -s conftest.err
+configure:2983: $? = 0
+configure:2986: test -s conftest.o
+configure:2989: $? = 0
+configure:3000: result: yes
+configure:2954: checking for stdlib.h
+configure:2970: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:2976: $? = 0
+configure:2980: test -z 
+			 || test ! -s conftest.err
+configure:2983: $? = 0
+configure:2986: test -s conftest.o
+configure:2989: $? = 0
+configure:3000: result: yes
+configure:2954: checking for string.h
+configure:2970: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:2976: $? = 0
+configure:2980: test -z 
+			 || test ! -s conftest.err
+configure:2983: $? = 0
+configure:2986: test -s conftest.o
+configure:2989: $? = 0
+configure:3000: result: yes
+configure:2954: checking for memory.h
+configure:2970: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:2976: $? = 0
+configure:2980: test -z 
+			 || test ! -s conftest.err
+configure:2983: $? = 0
+configure:2986: test -s conftest.o
+configure:2989: $? = 0
+configure:3000: result: yes
+configure:2954: checking for strings.h
+configure:2970: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:2976: $? = 0
+configure:2980: test -z 
+			 || test ! -s conftest.err
+configure:2983: $? = 0
+configure:2986: test -s conftest.o
+configure:2989: $? = 0
+configure:3000: result: yes
+configure:2954: checking for inttypes.h
+configure:2970: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:2976: $? = 0
+configure:2980: test -z 
+			 || test ! -s conftest.err
+configure:2983: $? = 0
+configure:2986: test -s conftest.o
+configure:2989: $? = 0
+configure:3000: result: yes
+configure:2954: checking for stdint.h
+configure:2970: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:2976: $? = 0
+configure:2980: test -z 
+			 || test ! -s conftest.err
+configure:2983: $? = 0
+configure:2986: test -s conftest.o
+configure:2989: $? = 0
+configure:3000: result: yes
+configure:2954: checking for unistd.h
+configure:2970: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:2976: $? = 0
+configure:2980: test -z 
+			 || test ! -s conftest.err
+configure:2983: $? = 0
+configure:2986: test -s conftest.o
+configure:2989: $? = 0
+configure:3000: result: yes
+configure:3017: checking for stdlib.h
+configure:3022: result: yes
+configure:3167: checking for unistd.h
+configure:3172: result: yes
+configure:3326: checking byteswap.h usability
+configure:3338: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:3344: $? = 0
+configure:3348: test -z 
+			 || test ! -s conftest.err
+configure:3351: $? = 0
+configure:3354: test -s conftest.o
+configure:3357: $? = 0
+configure:3367: result: yes
+configure:3371: checking byteswap.h presence
+configure:3381: gcc -E  conftest.c
+configure:3387: $? = 0
+configure:3407: result: yes
+configure:3442: checking for byteswap.h
+configure:3449: result: yes
+configure:3467: checking for stdint.h
+configure:3472: result: yes
+configure:3626: checking sys/uio.h usability
+configure:3638: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:3644: $? = 0
+configure:3648: test -z 
+			 || test ! -s conftest.err
+configure:3651: $? = 0
+configure:3654: test -s conftest.o
+configure:3657: $? = 0
+configure:3667: result: yes
+configure:3671: checking sys/uio.h presence
+configure:3681: gcc -E  conftest.c
+configure:3687: $? = 0
+configure:3707: result: yes
+configure:3742: checking for sys/uio.h
+configure:3749: result: yes
+configure:3767: checking for inttypes.h
+configure:3772: result: yes
+configure:3917: checking for sys/types.h
+configure:3922: result: yes
+configure:4076: checking machine/types.h usability
+configure:4088: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+conftest.c:61:27: error: machine/types.h: No such file or directory
+configure:4094: $? = 1
+configure: failed program was:
+| /* confdefs.h.  */
+| 
+| #define PACKAGE_NAME ""
+| #define PACKAGE_TARNAME ""
+| #define PACKAGE_VERSION ""
+| #define PACKAGE_STRING ""
+| #define PACKAGE_BUGREPORT ""
+| #define DEV_URANDOM "/dev/urandom"
+| #define STDC_HEADERS 1
+| #define HAVE_SYS_TYPES_H 1
+| #define HAVE_SYS_STAT_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_STRING_H 1
+| #define HAVE_MEMORY_H 1
+| #define HAVE_STRINGS_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_BYTESWAP_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_SYS_UIO_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_SYS_TYPES_H 1
+| /* end confdefs.h.  */
+| #include <stdio.h>
+| #if HAVE_SYS_TYPES_H
+| # include <sys/types.h>
+| #endif
+| #if HAVE_SYS_STAT_H
+| # include <sys/stat.h>
+| #endif
+| #if STDC_HEADERS
+| # include <stdlib.h>
+| # include <stddef.h>
+| #else
+| # if HAVE_STDLIB_H
+| #  include <stdlib.h>
+| # endif
+| #endif
+| #if HAVE_STRING_H
+| # if !STDC_HEADERS && HAVE_MEMORY_H
+| #  include <memory.h>
+| # endif
+| # include <string.h>
+| #endif
+| #if HAVE_STRINGS_H
+| # include <strings.h>
+| #endif
+| #if HAVE_INTTYPES_H
+| # include <inttypes.h>
+| #else
+| # if HAVE_STDINT_H
+| #  include <stdint.h>
+| # endif
+| #endif
+| #if HAVE_UNISTD_H
+| # include <unistd.h>
+| #endif
+| #include <machine/types.h>
+configure:4117: result: no
+configure:4121: checking machine/types.h presence
+configure:4131: gcc -E  conftest.c
+conftest.c:27:27: error: machine/types.h: No such file or directory
+configure:4137: $? = 1
+configure: failed program was:
+| /* confdefs.h.  */
+| 
+| #define PACKAGE_NAME ""
+| #define PACKAGE_TARNAME ""
+| #define PACKAGE_VERSION ""
+| #define PACKAGE_STRING ""
+| #define PACKAGE_BUGREPORT ""
+| #define DEV_URANDOM "/dev/urandom"
+| #define STDC_HEADERS 1
+| #define HAVE_SYS_TYPES_H 1
+| #define HAVE_SYS_STAT_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_STRING_H 1
+| #define HAVE_MEMORY_H 1
+| #define HAVE_STRINGS_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_BYTESWAP_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_SYS_UIO_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_SYS_TYPES_H 1
+| /* end confdefs.h.  */
+| #include <machine/types.h>
+configure:4157: result: no
+configure:4192: checking for machine/types.h
+configure:4199: result: no
+configure:4226: checking sys/int_types.h usability
+configure:4238: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+conftest.c:61:27: error: sys/int_types.h: No such file or directory
+configure:4244: $? = 1
+configure: failed program was:
+| /* confdefs.h.  */
+| 
+| #define PACKAGE_NAME ""
+| #define PACKAGE_TARNAME ""
+| #define PACKAGE_VERSION ""
+| #define PACKAGE_STRING ""
+| #define PACKAGE_BUGREPORT ""
+| #define DEV_URANDOM "/dev/urandom"
+| #define STDC_HEADERS 1
+| #define HAVE_SYS_TYPES_H 1
+| #define HAVE_SYS_STAT_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_STRING_H 1
+| #define HAVE_MEMORY_H 1
+| #define HAVE_STRINGS_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_BYTESWAP_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_SYS_UIO_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_SYS_TYPES_H 1
+| /* end confdefs.h.  */
+| #include <stdio.h>
+| #if HAVE_SYS_TYPES_H
+| # include <sys/types.h>
+| #endif
+| #if HAVE_SYS_STAT_H
+| # include <sys/stat.h>
+| #endif
+| #if STDC_HEADERS
+| # include <stdlib.h>
+| # include <stddef.h>
+| #else
+| # if HAVE_STDLIB_H
+| #  include <stdlib.h>
+| # endif
+| #endif
+| #if HAVE_STRING_H
+| # if !STDC_HEADERS && HAVE_MEMORY_H
+| #  include <memory.h>
+| # endif
+| # include <string.h>
+| #endif
+| #if HAVE_STRINGS_H
+| # include <strings.h>
+| #endif
+| #if HAVE_INTTYPES_H
+| # include <inttypes.h>
+| #else
+| # if HAVE_STDINT_H
+| #  include <stdint.h>
+| # endif
+| #endif
+| #if HAVE_UNISTD_H
+| # include <unistd.h>
+| #endif
+| #include <sys/int_types.h>
+configure:4267: result: no
+configure:4271: checking sys/int_types.h presence
+configure:4281: gcc -E  conftest.c
+conftest.c:27:27: error: sys/int_types.h: No such file or directory
+configure:4287: $? = 1
+configure: failed program was:
+| /* confdefs.h.  */
+| 
+| #define PACKAGE_NAME ""
+| #define PACKAGE_TARNAME ""
+| #define PACKAGE_VERSION ""
+| #define PACKAGE_STRING ""
+| #define PACKAGE_BUGREPORT ""
+| #define DEV_URANDOM "/dev/urandom"
+| #define STDC_HEADERS 1
+| #define HAVE_SYS_TYPES_H 1
+| #define HAVE_SYS_STAT_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_STRING_H 1
+| #define HAVE_MEMORY_H 1
+| #define HAVE_STRINGS_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_BYTESWAP_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_SYS_UIO_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_SYS_TYPES_H 1
+| /* end confdefs.h.  */
+| #include <sys/int_types.h>
+configure:4307: result: no
+configure:4342: checking for sys/int_types.h
+configure:4349: result: no
+configure:4379: checking sys/socket.h usability
+configure:4391: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:4397: $? = 0
+configure:4401: test -z 
+			 || test ! -s conftest.err
+configure:4404: $? = 0
+configure:4407: test -s conftest.o
+configure:4410: $? = 0
+configure:4420: result: yes
+configure:4424: checking sys/socket.h presence
+configure:4434: gcc -E  conftest.c
+configure:4440: $? = 0
+configure:4460: result: yes
+configure:4495: checking for sys/socket.h
+configure:4502: result: yes
+configure:4379: checking netinet/in.h usability
+configure:4391: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:4397: $? = 0
+configure:4401: test -z 
+			 || test ! -s conftest.err
+configure:4404: $? = 0
+configure:4407: test -s conftest.o
+configure:4410: $? = 0
+configure:4420: result: yes
+configure:4424: checking netinet/in.h presence
+configure:4434: gcc -E  conftest.c
+configure:4440: $? = 0
+configure:4460: result: yes
+configure:4495: checking for netinet/in.h
+configure:4502: result: yes
+configure:4379: checking arpa/inet.h usability
+configure:4391: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:4397: $? = 0
+configure:4401: test -z 
+			 || test ! -s conftest.err
+configure:4404: $? = 0
+configure:4407: test -s conftest.o
+configure:4410: $? = 0
+configure:4420: result: yes
+configure:4424: checking arpa/inet.h presence
+configure:4434: gcc -E  conftest.c
+configure:4440: $? = 0
+configure:4460: result: yes
+configure:4495: checking for arpa/inet.h
+configure:4502: result: yes
+configure:4529: checking windows.h usability
+configure:4541: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+conftest.c:64:21: error: windows.h: No such file or directory
+configure:4547: $? = 1
+configure: failed program was:
+| /* confdefs.h.  */
+| 
+| #define PACKAGE_NAME ""
+| #define PACKAGE_TARNAME ""
+| #define PACKAGE_VERSION ""
+| #define PACKAGE_STRING ""
+| #define PACKAGE_BUGREPORT ""
+| #define DEV_URANDOM "/dev/urandom"
+| #define STDC_HEADERS 1
+| #define HAVE_SYS_TYPES_H 1
+| #define HAVE_SYS_STAT_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_STRING_H 1
+| #define HAVE_MEMORY_H 1
+| #define HAVE_STRINGS_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_BYTESWAP_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_SYS_UIO_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_SYS_TYPES_H 1
+| #define HAVE_SYS_SOCKET_H 1
+| #define HAVE_NETINET_IN_H 1
+| #define HAVE_ARPA_INET_H 1
+| /* end confdefs.h.  */
+| #include <stdio.h>
+| #if HAVE_SYS_TYPES_H
+| # include <sys/types.h>
+| #endif
+| #if HAVE_SYS_STAT_H
+| # include <sys/stat.h>
+| #endif
+| #if STDC_HEADERS
+| # include <stdlib.h>
+| # include <stddef.h>
+| #else
+| # if HAVE_STDLIB_H
+| #  include <stdlib.h>
+| # endif
+| #endif
+| #if HAVE_STRING_H
+| # if !STDC_HEADERS && HAVE_MEMORY_H
+| #  include <memory.h>
+| # endif
+| # include <string.h>
+| #endif
+| #if HAVE_STRINGS_H
+| # include <strings.h>
+| #endif
+| #if HAVE_INTTYPES_H
+| # include <inttypes.h>
+| #else
+| # if HAVE_STDINT_H
+| #  include <stdint.h>
+| # endif
+| #endif
+| #if HAVE_UNISTD_H
+| # include <unistd.h>
+| #endif
+| #include <windows.h>
+configure:4570: result: no
+configure:4574: checking windows.h presence
+configure:4584: gcc -E  conftest.c
+conftest.c:30:21: error: windows.h: No such file or directory
+configure:4590: $? = 1
+configure: failed program was:
+| /* confdefs.h.  */
+| 
+| #define PACKAGE_NAME ""
+| #define PACKAGE_TARNAME ""
+| #define PACKAGE_VERSION ""
+| #define PACKAGE_STRING ""
+| #define PACKAGE_BUGREPORT ""
+| #define DEV_URANDOM "/dev/urandom"
+| #define STDC_HEADERS 1
+| #define HAVE_SYS_TYPES_H 1
+| #define HAVE_SYS_STAT_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_STRING_H 1
+| #define HAVE_MEMORY_H 1
+| #define HAVE_STRINGS_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_BYTESWAP_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_SYS_UIO_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_SYS_TYPES_H 1
+| #define HAVE_SYS_SOCKET_H 1
+| #define HAVE_NETINET_IN_H 1
+| #define HAVE_ARPA_INET_H 1
+| /* end confdefs.h.  */
+| #include <windows.h>
+configure:4610: result: no
+configure:4645: checking for windows.h
+configure:4652: result: no
+configure:4829: checking syslog.h usability
+configure:4841: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:4847: $? = 0
+configure:4851: test -z 
+			 || test ! -s conftest.err
+configure:4854: $? = 0
+configure:4857: test -s conftest.o
+configure:4860: $? = 0
+configure:4870: result: yes
+configure:4874: checking syslog.h presence
+configure:4884: gcc -E  conftest.c
+configure:4890: $? = 0
+configure:4910: result: yes
+configure:4945: checking for syslog.h
+configure:4952: result: yes
+configure:4966: checking for int8_t
+configure:4990: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:4996: $? = 0
+configure:5000: test -z 
+			 || test ! -s conftest.err
+configure:5003: $? = 0
+configure:5006: test -s conftest.o
+configure:5009: $? = 0
+configure:5020: result: yes
+configure:5030: checking for uint8_t
+configure:5054: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:5060: $? = 0
+configure:5064: test -z 
+			 || test ! -s conftest.err
+configure:5067: $? = 0
+configure:5070: test -s conftest.o
+configure:5073: $? = 0
+configure:5084: result: yes
+configure:5094: checking for int16_t
+configure:5118: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:5124: $? = 0
+configure:5128: test -z 
+			 || test ! -s conftest.err
+configure:5131: $? = 0
+configure:5134: test -s conftest.o
+configure:5137: $? = 0
+configure:5148: result: yes
+configure:5158: checking for uint16_t
+configure:5182: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:5188: $? = 0
+configure:5192: test -z 
+			 || test ! -s conftest.err
+configure:5195: $? = 0
+configure:5198: test -s conftest.o
+configure:5201: $? = 0
+configure:5212: result: yes
+configure:5222: checking for int32_t
+configure:5246: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:5252: $? = 0
+configure:5256: test -z 
+			 || test ! -s conftest.err
+configure:5259: $? = 0
+configure:5262: test -s conftest.o
+configure:5265: $? = 0
+configure:5276: result: yes
+configure:5286: checking for uint32_t
+configure:5310: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:5316: $? = 0
+configure:5320: test -z 
+			 || test ! -s conftest.err
+configure:5323: $? = 0
+configure:5326: test -s conftest.o
+configure:5329: $? = 0
+configure:5340: result: yes
+configure:5350: checking for uint64_t
+configure:5374: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:5380: $? = 0
+configure:5384: test -z 
+			 || test ! -s conftest.err
+configure:5387: $? = 0
+configure:5390: test -s conftest.o
+configure:5393: $? = 0
+configure:5404: result: yes
+configure:5415: checking for unsigned long
+configure:5439: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:5445: $? = 0
+configure:5449: test -z 
+			 || test ! -s conftest.err
+configure:5452: $? = 0
+configure:5455: test -s conftest.o
+configure:5458: $? = 0
+configure:5469: result: yes
+configure:5472: checking size of unsigned long
+configure:5791: gcc -o conftest -Wall -O4 -fexpensive-optimizations -funroll-loops   conftest.c  >&5
+configure:5794: $? = 0
+configure:5796: ./conftest
+configure:5799: $? = 0
+configure:5822: result: 8
+configure:5829: checking for unsigned long long
+configure:5853: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:5859: $? = 0
+configure:5863: test -z 
+			 || test ! -s conftest.err
+configure:5866: $? = 0
+configure:5869: test -s conftest.o
+configure:5872: $? = 0
+configure:5883: result: yes
+configure:5886: checking size of unsigned long long
+configure:6205: gcc -o conftest -Wall -O4 -fexpensive-optimizations -funroll-loops   conftest.c  >&5
+configure:6208: $? = 0
+configure:6210: ./conftest
+configure:6213: $? = 0
+configure:6236: result: 8
+configure:6244: checking for an ANSI C-conforming const
+configure:6311: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+conftest.c: In function 'main':
+conftest.c:67: warning: unused variable 's'
+conftest.c:87: warning: unused variable 'foo'
+conftest.c:54: warning: unused variable 'zero'
+conftest.c:48: warning: unused variable 'x'
+conftest.c:69: warning: 't' is used uninitialized in this function
+conftest.c:84: warning: 'b' is used uninitialized in this function
+configure:6317: $? = 0
+configure:6321: test -z 
+			 || test ! -s conftest.err
+configure:6324: $? = 0
+configure:6327: test -s conftest.o
+configure:6330: $? = 0
+configure:6341: result: yes
+configure:6351: checking for inline
+configure:6372: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:6378: $? = 0
+configure:6382: test -z 
+			 || test ! -s conftest.err
+configure:6385: $? = 0
+configure:6388: test -s conftest.o
+configure:6391: $? = 0
+configure:6403: result: inline
+configure:6422: checking for size_t
+configure:6446: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:6452: $? = 0
+configure:6456: test -z 
+			 || test ! -s conftest.err
+configure:6459: $? = 0
+configure:6462: test -s conftest.o
+configure:6465: $? = 0
+configure:6476: result: yes
+configure:6495: checking for socket
+configure:6552: gcc -o conftest -Wall -O4 -fexpensive-optimizations -funroll-loops   conftest.c  >&5
+configure:6558: $? = 0
+configure:6562: test -z 
+			 || test ! -s conftest.err
+configure:6565: $? = 0
+configure:6568: test -s conftest
+configure:6571: $? = 0
+configure:6583: result: yes
+configure:6495: checking for inet_aton
+configure:6552: gcc -o conftest -Wall -O4 -fexpensive-optimizations -funroll-loops   conftest.c  >&5
+configure:6558: $? = 0
+configure:6562: test -z 
+			 || test ! -s conftest.err
+configure:6565: $? = 0
+configure:6568: test -s conftest
+configure:6571: $? = 0
+configure:6583: result: yes
+configure:6495: checking for usleep
+configure:6552: gcc -o conftest -Wall -O4 -fexpensive-optimizations -funroll-loops   conftest.c  >&5
+configure:6558: $? = 0
+configure:6562: test -z 
+			 || test ! -s conftest.err
+configure:6565: $? = 0
+configure:6568: test -s conftest
+configure:6571: $? = 0
+configure:6583: result: yes
+configure:6729: checking whether byte ordering is bigendian
+configure:6756: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+configure:6762: $? = 0
+configure:6766: test -z 
+			 || test ! -s conftest.err
+configure:6769: $? = 0
+configure:6772: test -s conftest.o
+configure:6775: $? = 0
+configure:6799: gcc -c -Wall -O4 -fexpensive-optimizations -funroll-loops  conftest.c >&5
+conftest.c: In function 'main':
+conftest.c:50: error: 'not' undeclared (first use in this function)
+conftest.c:50: error: (Each undeclared identifier is reported only once
+conftest.c:50: error: for each function it appears in.)
+conftest.c:50: error: expected ';' before 'big'
+configure:6805: $? = 1
+configure: failed program was:
+| /* confdefs.h.  */
+| 
+| #define PACKAGE_NAME ""
+| #define PACKAGE_TARNAME ""
+| #define PACKAGE_VERSION ""
+| #define PACKAGE_STRING ""
+| #define PACKAGE_BUGREPORT ""
+| #define DEV_URANDOM "/dev/urandom"
+| #define STDC_HEADERS 1
+| #define HAVE_SYS_TYPES_H 1
+| #define HAVE_SYS_STAT_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_STRING_H 1
+| #define HAVE_MEMORY_H 1
+| #define HAVE_STRINGS_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_STDLIB_H 1
+| #define HAVE_UNISTD_H 1
+| #define HAVE_BYTESWAP_H 1
+| #define HAVE_STDINT_H 1
+| #define HAVE_SYS_UIO_H 1
+| #define HAVE_INTTYPES_H 1
+| #define HAVE_SYS_TYPES_H 1
+| #define HAVE_SYS_SOCKET_H 1
+| #define HAVE_NETINET_IN_H 1
+| #define HAVE_ARPA_INET_H 1
+| #define HAVE_SYSLOG_H 1
+| #define HAVE_INT8_T 1
+| #define HAVE_UINT8_T 1
+| #define HAVE_INT16_T 1
+| #define HAVE_UINT16_T 1
+| #define HAVE_INT32_T 1
+| #define HAVE_UINT32_T 1
+| #define HAVE_UINT64_T 1
+| #define SIZEOF_UNSIGNED_LONG 8
+| #define SIZEOF_UNSIGNED_LONG_LONG 8
+| #define HAVE_SOCKET 1
+| #define HAVE_INET_ATON 1
+| #define HAVE_USLEEP 1
+| /* end confdefs.h.  */
+| #include <sys/types.h>
+| #include <sys/param.h>
+| 
+| int
+| main ()
+| {
+| #if BYTE_ORDER != BIG_ENDIAN
+|  not big endian
+| #endif
+| 
+|   ;
+|   return 0;
+| }
+configure:6940: result: no
+configure:6966: checking build system type
+configure:6984: result: x86_64-unknown-linux-gnu
+configure:6992: checking host system type
+configure:7006: result: x86_64-unknown-linux-gnu
+configure:7052: checking whether to compile in debugging
+configure:7068: result: yes
+configure:7071: checking whether to use ISMAcryp code
+configure:7087: result: no
+configure:7090: checking whether to use syslog for error reporting
+configure:7106: result: no
+configure:7109: checking whether to use stdout for error reporting
+configure:7125: result: yes
+configure:7128: checking whether to use /dev/console for error reporting
+configure:7149: result: no
+configure:7152: checking whether to use GDOI key management
+configure:7170: result: no
+configure:7272: creating ./config.status
+
+## ---------------------- ##
+## Running config.status. ##
+## ---------------------- ##
+
+This file was extended by config.status, which was
+generated by GNU Autoconf 2.59.  Invocation command line was
+
+  CONFIG_FILES    = 
+  CONFIG_HEADERS  = 
+  CONFIG_LINKS    = 
+  CONFIG_COMMANDS = 
+  $ ./config.status 
+
+on hpgntae-ubiq59.eem.corp.google.com
+
+config.status:664: creating Makefile
+config.status:664: creating crypto/Makefile
+config.status:664: creating doc/Makefile
+config.status:768: creating crypto/include/config.h
+
+## ---------------- ##
+## Cache variables. ##
+## ---------------- ##
+
+ac_cv_build=x86_64-unknown-linux-gnu
+ac_cv_build_alias=x86_64-unknown-linux-gnu
+ac_cv_c_bigendian=no
+ac_cv_c_compiler_gnu=yes
+ac_cv_c_const=yes
+ac_cv_c_inline=inline
+ac_cv_env_CC_set=
+ac_cv_env_CC_value=
+ac_cv_env_CFLAGS_set=
+ac_cv_env_CFLAGS_value=
+ac_cv_env_CPPFLAGS_set=
+ac_cv_env_CPPFLAGS_value=
+ac_cv_env_CPP_set=
+ac_cv_env_CPP_value=
+ac_cv_env_LDFLAGS_set=
+ac_cv_env_LDFLAGS_value=
+ac_cv_env_build_alias_set=
+ac_cv_env_build_alias_value=
+ac_cv_env_host_alias_set=
+ac_cv_env_host_alias_value=
+ac_cv_env_target_alias_set=
+ac_cv_env_target_alias_value=
+ac_cv_exeext=
+ac_cv_file__dev_urandom=yes
+ac_cv_func_inet_aton=yes
+ac_cv_func_socket=yes
+ac_cv_func_usleep=yes
+ac_cv_header_arpa_inet_h=yes
+ac_cv_header_byteswap_h=yes
+ac_cv_header_inttypes_h=yes
+ac_cv_header_machine_types_h=no
+ac_cv_header_memory_h=yes
+ac_cv_header_netinet_in_h=yes
+ac_cv_header_stdc=yes
+ac_cv_header_stdint_h=yes
+ac_cv_header_stdlib_h=yes
+ac_cv_header_string_h=yes
+ac_cv_header_strings_h=yes
+ac_cv_header_sys_int_types_h=no
+ac_cv_header_sys_socket_h=yes
+ac_cv_header_sys_stat_h=yes
+ac_cv_header_sys_types_h=yes
+ac_cv_header_sys_uio_h=yes
+ac_cv_header_syslog_h=yes
+ac_cv_header_unistd_h=yes
+ac_cv_header_windows_h=no
+ac_cv_host=x86_64-unknown-linux-gnu
+ac_cv_host_alias=x86_64-unknown-linux-gnu
+ac_cv_objext=o
+ac_cv_path_install='/usr/bin/install -c'
+ac_cv_prog_CPP='gcc -E'
+ac_cv_prog_ac_ct_CC=gcc
+ac_cv_prog_ac_ct_RANLIB=ranlib
+ac_cv_prog_cc_g=yes
+ac_cv_prog_cc_stdc=
+ac_cv_prog_egrep='grep -E'
+ac_cv_sizeof_unsigned_long=8
+ac_cv_sizeof_unsigned_long_long=8
+ac_cv_type_int16_t=yes
+ac_cv_type_int32_t=yes
+ac_cv_type_int8_t=yes
+ac_cv_type_size_t=yes
+ac_cv_type_uint16_t=yes
+ac_cv_type_uint32_t=yes
+ac_cv_type_uint64_t=yes
+ac_cv_type_uint8_t=yes
+ac_cv_type_unsigned_long=yes
+ac_cv_type_unsigned_long_long=yes
+
+## ----------------- ##
+## Output variables. ##
+## ----------------- ##
+
+CC='gcc'
+CFLAGS='-Wall -O4 -fexpensive-optimizations -funroll-loops'
+CPP='gcc -E'
+CPPFLAGS=''
+DEFS='-DHAVE_CONFIG_H'
+ECHO_C=''
+ECHO_N='-n'
+ECHO_T=''
+EGREP='grep -E'
+EXE=''
+EXEEXT=''
+GDOI_OBJS=''
+INSTALL_DATA='${INSTALL} -m 644'
+INSTALL_PROGRAM='${INSTALL}'
+INSTALL_SCRIPT='${INSTALL}'
+LDFLAGS=''
+LIBOBJS=''
+LIBS=''
+LTLIBOBJS=''
+OBJEXT='o'
+PACKAGE_BUGREPORT=''
+PACKAGE_NAME=''
+PACKAGE_STRING=''
+PACKAGE_TARNAME=''
+PACKAGE_VERSION=''
+PATH_SEPARATOR=':'
+RANLIB='ranlib'
+RNG_OBJS='rand_source.o'
+SHELL='/bin/sh'
+ac_ct_CC='gcc'
+ac_ct_RANLIB='ranlib'
+bindir='${exec_prefix}/bin'
+build='x86_64-unknown-linux-gnu'
+build_alias=''
+build_cpu='x86_64'
+build_os='linux-gnu'
+build_vendor='unknown'
+datadir='${prefix}/share'
+exec_prefix='${prefix}'
+host='x86_64-unknown-linux-gnu'
+host_alias=''
+host_cpu='x86_64'
+host_os='linux-gnu'
+host_vendor='unknown'
+includedir='${prefix}/include'
+infodir='${prefix}/info'
+libdir='${exec_prefix}/lib'
+libexecdir='${exec_prefix}/libexec'
+localstatedir='${prefix}/var'
+mandir='${prefix}/man'
+oldincludedir='/usr/include'
+prefix='/home/astor/localastor/google3/third_party/libsrtp/v1_4_2'
+program_transform_name='s,x,x,'
+sbindir='${exec_prefix}/sbin'
+sharedstatedir='${prefix}/com'
+sysconfdir='${prefix}/etc'
+target_alias=''
+
+## ----------- ##
+## confdefs.h. ##
+## ----------- ##
+
+#define CPU_CISC 1
+#define DEV_URANDOM "/dev/urandom"
+#define ENABLE_DEBUGGING 1
+#define ERR_REPORTING_STDOUT 1
+#define HAVE_ARPA_INET_H 1
+#define HAVE_BYTESWAP_H 1
+#define HAVE_INET_ATON 1
+#define HAVE_INT16_T 1
+#define HAVE_INT32_T 1
+#define HAVE_INT8_T 1
+#define HAVE_INTTYPES_H 1
+#define HAVE_INTTYPES_H 1
+#define HAVE_MEMORY_H 1
+#define HAVE_NETINET_IN_H 1
+#define HAVE_SOCKET 1
+#define HAVE_STDINT_H 1
+#define HAVE_STDINT_H 1
+#define HAVE_STDLIB_H 1
+#define HAVE_STDLIB_H 1
+#define HAVE_STRINGS_H 1
+#define HAVE_STRING_H 1
+#define HAVE_SYSLOG_H 1
+#define HAVE_SYS_SOCKET_H 1
+#define HAVE_SYS_STAT_H 1
+#define HAVE_SYS_TYPES_H 1
+#define HAVE_SYS_TYPES_H 1
+#define HAVE_SYS_UIO_H 1
+#define HAVE_UINT16_T 1
+#define HAVE_UINT32_T 1
+#define HAVE_UINT64_T 1
+#define HAVE_UINT8_T 1
+#define HAVE_UNISTD_H 1
+#define HAVE_UNISTD_H 1
+#define HAVE_USLEEP 1
+#define PACKAGE_BUGREPORT ""
+#define PACKAGE_NAME ""
+#define PACKAGE_STRING ""
+#define PACKAGE_TARNAME ""
+#define PACKAGE_VERSION ""
+#define SIZEOF_UNSIGNED_LONG 8
+#define SIZEOF_UNSIGNED_LONG_LONG 8
+#define STDC_HEADERS 1
+
+configure: exit 0
diff --git a/config.status b/config.status
new file mode 100755
index 0000000..7797f0b
--- /dev/null
+++ b/config.status
@@ -0,0 +1,991 @@
+#! /bin/sh
+# Generated by configure.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+SHELL=${CONFIG_SHELL-/bin/sh}
+## --------------------- ##
+## M4sh Initialization.  ##
+## --------------------- ##
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+  set -o posix
+fi
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# Support unset when possible.
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+
+# Work around bugs in pre-3.0 UWIN ksh.
+$as_unset ENV MAIL MAILPATH
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+for as_var in \
+  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+  LC_TELEPHONE LC_TIME
+do
+  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
+    eval $as_var=C; export $as_var
+  else
+    $as_unset $as_var
+  fi
+done
+
+# Required to use basename.
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename /) >/dev/null 2>&1 && test "X`basename / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+
+# Name of the executable.
+as_me=`$as_basename "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)$' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; }
+  	  /^X\/\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\/\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+
+
+# PATH needs CR, and LINENO needs CR and PATH.
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+
+
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2"  || {
+  # Find who we are.  Look in the path if we contain no path at all
+  # relative or not.
+  case $0 in
+    *[\\/]* ) as_myself=$0 ;;
+    *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+done
+
+       ;;
+  esac
+  # We did not find ourselves, most probably we were run as `sh COMMAND'
+  # in which case we are not to be found in the path.
+  if test "x$as_myself" = x; then
+    as_myself=$0
+  fi
+  if test ! -f "$as_myself"; then
+    { { echo "$as_me:$LINENO: error: cannot find myself; rerun with an absolute path" >&5
+echo "$as_me: error: cannot find myself; rerun with an absolute path" >&2;}
+   { (exit 1); exit 1; }; }
+  fi
+  case $CONFIG_SHELL in
+  '')
+    as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for as_base in sh bash ksh sh5; do
+	 case $as_dir in
+	 /*)
+	   if ("$as_dir/$as_base" -c '
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2" ') 2>/dev/null; then
+	     $as_unset BASH_ENV || test "${BASH_ENV+set}" != set || { BASH_ENV=; export BASH_ENV; }
+	     $as_unset ENV || test "${ENV+set}" != set || { ENV=; export ENV; }
+	     CONFIG_SHELL=$as_dir/$as_base
+	     export CONFIG_SHELL
+	     exec "$CONFIG_SHELL" "$0" ${1+"$@"}
+	   fi;;
+	 esac
+       done
+done
+;;
+  esac
+
+  # Create $as_me.lineno as a copy of $as_myself, but with $LINENO
+  # uniformly replaced by the line number.  The first 'sed' inserts a
+  # line-number line before each line; the second 'sed' does the real
+  # work.  The second script uses 'N' to pair each line-number line
+  # with the numbered line, and appends trailing '-' during
+  # substitution so that $LINENO is not a special case at line end.
+  # (Raja R Harinath suggested sed '=', and Paul Eggert wrote the
+  # second 'sed' script.  Blame Lee E. McMahon for sed's syntax.  :-)
+  sed '=' <$as_myself |
+    sed '
+      N
+      s,$,-,
+      : loop
+      s,^\(['$as_cr_digits']*\)\(.*\)[$]LINENO\([^'$as_cr_alnum'_]\),\1\2\1\3,
+      t loop
+      s,-$,,
+      s,^['$as_cr_digits']*\n,,
+    ' >$as_me.lineno &&
+  chmod +x $as_me.lineno ||
+    { { echo "$as_me:$LINENO: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&5
+echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2;}
+   { (exit 1); exit 1; }; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensible to this).
+  . ./$as_me.lineno
+  # Exit status is that of the last command.
+  exit
+}
+
+
+case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
+  *c*,-n*) ECHO_N= ECHO_C='
+' ECHO_T='	' ;;
+  *c*,*  ) ECHO_N=-n ECHO_C= ECHO_T= ;;
+  *)       ECHO_N= ECHO_C='\c' ECHO_T= ;;
+esac
+
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+rm -f conf$$ conf$$.exe conf$$.file
+echo >conf$$.file
+if ln -s conf$$.file conf$$ 2>/dev/null; then
+  # We could just check for DJGPP; but this test a) works b) is more generic
+  # and c) will remain valid once DJGPP supports symlinks (DJGPP 2.04).
+  if test -f conf$$.exe; then
+    # Don't use ln at all; we don't have any links
+    as_ln_s='cp -p'
+  else
+    as_ln_s='ln -s'
+  fi
+elif ln conf$$.file conf$$ 2>/dev/null; then
+  as_ln_s=ln
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.file
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p=:
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_executable_p="test -f"
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.
+as_nl='
+'
+IFS=" 	$as_nl"
+
+# CDPATH.
+$as_unset CDPATH
+
+exec 6>&1
+
+# Open the log real soon, to keep \$[0] and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.  Logging --version etc. is OK.
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+} >&5
+cat >&5 <<_CSEOF
+
+This file was extended by $as_me, which was
+generated by GNU Autoconf 2.59.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+_CSEOF
+echo "on `(hostname || uname -n) 2>/dev/null | sed 1q`" >&5
+echo >&5
+config_files=" Makefile crypto/Makefile doc/Makefile"
+config_headers=" crypto/include/config.h:config_in.h"
+
+ac_cs_usage="\
+\`$as_me' instantiates files from templates according to the
+current configuration.
+
+Usage: $0 [OPTIONS] [FILE]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number, then exit
+  -q, --quiet      do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+  --file=FILE[:TEMPLATE]
+		   instantiate the configuration file FILE
+  --header=FILE[:TEMPLATE]
+		   instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Report bugs to <bug-autoconf@gnu.org>."
+ac_cs_version="\
+config.status
+configured by ./configure, generated by GNU Autoconf 2.59,
+  with options \"'--prefix=/home/astor/localastor/google3/third_party/libsrtp/v1_4_2'\"
+
+Copyright (C) 2003 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+srcdir=.
+INSTALL="/usr/bin/install -c"
+# If no file are specified by the user, then we need to provide default
+# value.  By we need to know if files were specified by the user.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=*)
+    ac_option=`expr "x$1" : 'x\([^=]*\)='`
+    ac_optarg=`expr "x$1" : 'x[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  -*)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  *) # This is not an option, so the user has probably given explicit
+     # arguments.
+     ac_option=$1
+     ac_need_defaults=false;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --vers* | -V )
+    echo "$ac_cs_version"; exit 0 ;;
+  --he | --h)
+    # Conflict between --help and --header
+    { { echo "$as_me:$LINENO: error: ambiguous option: $1
+Try \`$0 --help' for more information." >&5
+echo "$as_me: error: ambiguous option: $1
+Try \`$0 --help' for more information." >&2;}
+   { (exit 1); exit 1; }; };;
+  --help | --hel | -h )
+    echo "$ac_cs_usage"; exit 0 ;;
+  --debug | --d* | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    CONFIG_FILES="$CONFIG_FILES $ac_optarg"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    CONFIG_HEADERS="$CONFIG_HEADERS $ac_optarg"
+    ac_need_defaults=false;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) { { echo "$as_me:$LINENO: error: unrecognized option: $1
+Try \`$0 --help' for more information." >&5
+echo "$as_me: error: unrecognized option: $1
+Try \`$0 --help' for more information." >&2;}
+   { (exit 1); exit 1; }; } ;;
+
+  *) ac_config_targets="$ac_config_targets $1" ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+if $ac_cs_recheck; then
+  echo "running /bin/sh ./configure " '--prefix=/home/astor/localastor/google3/third_party/libsrtp/v1_4_2' $ac_configure_extra_args " --no-create --no-recursion" >&6
+  exec /bin/sh ./configure '--prefix=/home/astor/localastor/google3/third_party/libsrtp/v1_4_2' $ac_configure_extra_args --no-create --no-recursion
+fi
+
+for ac_config_target in $ac_config_targets
+do
+  case "$ac_config_target" in
+  # Handling of arguments.
+  "Makefile" ) CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+  "crypto/Makefile" ) CONFIG_FILES="$CONFIG_FILES crypto/Makefile" ;;
+  "doc/Makefile" ) CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
+  "crypto/include/config.h" ) CONFIG_HEADERS="$CONFIG_HEADERS crypto/include/config.h:config_in.h" ;;
+  *) { { echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
+echo "$as_me: error: invalid argument: $ac_config_target" >&2;}
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason to put it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Create a temporary directory, and hook for its removal unless debugging.
+$debug ||
+{
+  trap 'exit_status=$?; rm -rf $tmp && exit $exit_status' 0
+  trap '{ (exit 1); exit 1; }' 1 2 13 15
+}
+
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d -q "./confstatXXXXXX") 2>/dev/null` &&
+  test -n "$tmp" && test -d "$tmp"
+}  ||
+{
+  tmp=./confstat$$-$RANDOM
+  (umask 077 && mkdir $tmp)
+} ||
+{
+   echo "$me: cannot create a temporary directory in ." >&2
+   { (exit 1); exit 1; }
+}
+
+
+#
+# CONFIG_FILES section.
+#
+
+# No need to generate the scripts if there are no CONFIG_FILES.
+# This happens for instance when ./config.status config.h
+if test -n "$CONFIG_FILES"; then
+  # Protect against being on the right side of a sed subst in config.status.
+  sed 's/,@/@@/; s/@,/@@/; s/,;t t$/@;t t/; /@;t t$/s/[\\&,]/\\&/g;
+   s/@@/,@/; s/@@/@,/; s/@;t t$/,;t t/' >$tmp/subs.sed <<\CEOF
+s,@SHELL@,/bin/sh,;t t
+s,@PATH_SEPARATOR@,:,;t t
+s,@PACKAGE_NAME@,,;t t
+s,@PACKAGE_TARNAME@,,;t t
+s,@PACKAGE_VERSION@,,;t t
+s,@PACKAGE_STRING@,,;t t
+s,@PACKAGE_BUGREPORT@,,;t t
+s,@exec_prefix@,${prefix},;t t
+s,@prefix@,/home/astor/localastor/google3/third_party/libsrtp/v1_4_2,;t t
+s,@program_transform_name@,s,x,x,,;t t
+s,@bindir@,${exec_prefix}/bin,;t t
+s,@sbindir@,${exec_prefix}/sbin,;t t
+s,@libexecdir@,${exec_prefix}/libexec,;t t
+s,@datadir@,${prefix}/share,;t t
+s,@sysconfdir@,${prefix}/etc,;t t
+s,@sharedstatedir@,${prefix}/com,;t t
+s,@localstatedir@,${prefix}/var,;t t
+s,@libdir@,${exec_prefix}/lib,;t t
+s,@includedir@,${prefix}/include,;t t
+s,@oldincludedir@,/usr/include,;t t
+s,@infodir@,${prefix}/info,;t t
+s,@mandir@,${prefix}/man,;t t
+s,@build_alias@,,;t t
+s,@host_alias@,,;t t
+s,@target_alias@,,;t t
+s,@DEFS@,-DHAVE_CONFIG_H,;t t
+s,@ECHO_C@,,;t t
+s,@ECHO_N@,-n,;t t
+s,@ECHO_T@,,;t t
+s,@LIBS@,,;t t
+s,@RANLIB@,ranlib,;t t
+s,@ac_ct_RANLIB@,ranlib,;t t
+s,@CC@,gcc,;t t
+s,@CFLAGS@,-Wall -O4 -fexpensive-optimizations -funroll-loops,;t t
+s,@LDFLAGS@,,;t t
+s,@CPPFLAGS@,,;t t
+s,@ac_ct_CC@,gcc,;t t
+s,@EXEEXT@,,;t t
+s,@OBJEXT@,o,;t t
+s,@INSTALL_PROGRAM@,${INSTALL},;t t
+s,@INSTALL_SCRIPT@,${INSTALL},;t t
+s,@INSTALL_DATA@,${INSTALL} -m 644,;t t
+s,@RNG_OBJS@,rand_source.o,;t t
+s,@CPP@,gcc -E,;t t
+s,@EGREP@,grep -E,;t t
+s,@build@,x86_64-unknown-linux-gnu,;t t
+s,@build_cpu@,x86_64,;t t
+s,@build_vendor@,unknown,;t t
+s,@build_os@,linux-gnu,;t t
+s,@host@,x86_64-unknown-linux-gnu,;t t
+s,@host_cpu@,x86_64,;t t
+s,@host_vendor@,unknown,;t t
+s,@host_os@,linux-gnu,;t t
+s,@EXE@,,;t t
+s,@GDOI_OBJS@,,;t t
+s,@LIBOBJS@,,;t t
+s,@LTLIBOBJS@,,;t t
+CEOF
+
+  # Split the substitutions into bite-sized pieces for seds with
+  # small command number limits, like on Digital OSF/1 and HP-UX.
+  ac_max_sed_lines=48
+  ac_sed_frag=1 # Number of current file.
+  ac_beg=1 # First line for current file.
+  ac_end=$ac_max_sed_lines # Line after last line for current file.
+  ac_more_lines=:
+  ac_sed_cmds=
+  while $ac_more_lines; do
+    if test $ac_beg -gt 1; then
+      sed "1,${ac_beg}d; ${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
+    else
+      sed "${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
+    fi
+    if test ! -s $tmp/subs.frag; then
+      ac_more_lines=false
+    else
+      # The purpose of the label and of the branching condition is to
+      # speed up the sed processing (if there are no `@' at all, there
+      # is no need to browse any of the substitutions).
+      # These are the two extra sed commands mentioned above.
+      (echo ':t
+  /@[a-zA-Z_][a-zA-Z_0-9]*@/!b' && cat $tmp/subs.frag) >$tmp/subs-$ac_sed_frag.sed
+      if test -z "$ac_sed_cmds"; then
+	ac_sed_cmds="sed -f $tmp/subs-$ac_sed_frag.sed"
+      else
+	ac_sed_cmds="$ac_sed_cmds | sed -f $tmp/subs-$ac_sed_frag.sed"
+      fi
+      ac_sed_frag=`expr $ac_sed_frag + 1`
+      ac_beg=$ac_end
+      ac_end=`expr $ac_end + $ac_max_sed_lines`
+    fi
+  done
+  if test -z "$ac_sed_cmds"; then
+    ac_sed_cmds=cat
+  fi
+fi # test -n "$CONFIG_FILES"
+
+for ac_file in : $CONFIG_FILES; do test "x$ac_file" = x: && continue
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case $ac_file in
+  - | *:- | *:-:* ) # input from stdin
+	cat >$tmp/stdin
+	ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  *:* ) ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  * )   ac_file_in=$ac_file.in ;;
+  esac
+
+  # Compute @srcdir@, @top_srcdir@, and @INSTALL@ for subdirectories.
+  ac_dir=`(dirname "$ac_file") 2>/dev/null ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+  ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+
+# Do not use `cd foo && pwd` to compute absolute paths, because
+# the directories may not exist.
+case `pwd` in
+.) ac_abs_builddir="$ac_dir";;
+*)
+  case "$ac_dir" in
+  .) ac_abs_builddir=`pwd`;;
+  [\\/]* | ?:[\\/]* ) ac_abs_builddir="$ac_dir";;
+  *) ac_abs_builddir=`pwd`/"$ac_dir";;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_builddir=${ac_top_builddir}.;;
+*)
+  case ${ac_top_builddir}. in
+  .) ac_abs_top_builddir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_builddir=${ac_top_builddir}.;;
+  *) ac_abs_top_builddir=$ac_abs_builddir/${ac_top_builddir}.;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_srcdir=$ac_srcdir;;
+*)
+  case $ac_srcdir in
+  .) ac_abs_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_srcdir=$ac_srcdir;;
+  *) ac_abs_srcdir=$ac_abs_builddir/$ac_srcdir;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_srcdir=$ac_top_srcdir;;
+*)
+  case $ac_top_srcdir in
+  .) ac_abs_top_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_srcdir=$ac_top_srcdir;;
+  *) ac_abs_top_srcdir=$ac_abs_builddir/$ac_top_srcdir;;
+  esac;;
+esac
+
+
+  case $INSTALL in
+  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+  *) ac_INSTALL=$ac_top_builddir$INSTALL ;;
+  esac
+
+  if test x"$ac_file" != x-; then
+    { echo "$as_me:$LINENO: creating $ac_file" >&5
+echo "$as_me: creating $ac_file" >&6;}
+    rm -f "$ac_file"
+  fi
+  # Let's still pretend it is `configure' which instantiates (i.e., don't
+  # use $as_me), people would be surprised to read:
+  #    /* config.h.  Generated by config.status.  */
+  if test x"$ac_file" = x-; then
+    configure_input=
+  else
+    configure_input="$ac_file.  "
+  fi
+  configure_input=$configure_input"Generated from `echo $ac_file_in |
+				     sed 's,.*/,,'` by configure."
+
+  # First look for the input files in the build tree, otherwise in the
+  # src tree.
+  ac_file_inputs=`IFS=:
+    for f in $ac_file_in; do
+      case $f in
+      -) echo $tmp/stdin ;;
+      [\\/$]*)
+	 # Absolute (can't be DOS-style, as IFS=:)
+	 test -f "$f" || { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 echo "$f";;
+      *) # Relative
+	 if test -f "$f"; then
+	   # Build tree
+	   echo "$f"
+	 elif test -f "$srcdir/$f"; then
+	   # Source tree
+	   echo "$srcdir/$f"
+	 else
+	   # /dev/null tree
+	   { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 fi;;
+      esac
+    done` || { (exit 1); exit 1; }
+  sed "/^[	 ]*VPATH[	 ]*=/{
+s/:*\$(srcdir):*/:/;
+s/:*\${srcdir}:*/:/;
+s/:*@srcdir@:*/:/;
+s/^\([^=]*=[	 ]*\):*/\1/;
+s/:*$//;
+s/^[^=]*=[	 ]*$//;
+}
+
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s,@configure_input@,$configure_input,;t t
+s,@srcdir@,$ac_srcdir,;t t
+s,@abs_srcdir@,$ac_abs_srcdir,;t t
+s,@top_srcdir@,$ac_top_srcdir,;t t
+s,@abs_top_srcdir@,$ac_abs_top_srcdir,;t t
+s,@builddir@,$ac_builddir,;t t
+s,@abs_builddir@,$ac_abs_builddir,;t t
+s,@top_builddir@,$ac_top_builddir,;t t
+s,@abs_top_builddir@,$ac_abs_top_builddir,;t t
+s,@INSTALL@,$ac_INSTALL,;t t
+" $ac_file_inputs | (eval "$ac_sed_cmds") >$tmp/out
+  rm -f $tmp/stdin
+  if test x"$ac_file" != x-; then
+    mv $tmp/out $ac_file
+  else
+    cat $tmp/out
+    rm -f $tmp/out
+  fi
+
+done
+
+#
+# CONFIG_HEADER section.
+#
+
+# These sed commands are passed to sed as "A NAME B NAME C VALUE D", where
+# NAME is the cpp macro being defined and VALUE is the value it is being given.
+#
+# ac_d sets the value in "#define NAME VALUE" lines.
+ac_dA='s,^\([	 ]*\)#\([	 ]*define[	 ][	 ]*\)'
+ac_dB='[	 ].*$,\1#\2'
+ac_dC=' '
+ac_dD=',;t'
+# ac_u turns "#undef NAME" without trailing blanks into "#define NAME VALUE".
+ac_uA='s,^\([	 ]*\)#\([	 ]*\)undef\([	 ][	 ]*\)'
+ac_uB='$,\1#\2define\3'
+ac_uC=' '
+ac_uD=',;t'
+
+for ac_file in : $CONFIG_HEADERS; do test "x$ac_file" = x: && continue
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case $ac_file in
+  - | *:- | *:-:* ) # input from stdin
+	cat >$tmp/stdin
+	ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  *:* ) ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  * )   ac_file_in=$ac_file.in ;;
+  esac
+
+  test x"$ac_file" != x- && { echo "$as_me:$LINENO: creating $ac_file" >&5
+echo "$as_me: creating $ac_file" >&6;}
+
+  # First look for the input files in the build tree, otherwise in the
+  # src tree.
+  ac_file_inputs=`IFS=:
+    for f in $ac_file_in; do
+      case $f in
+      -) echo $tmp/stdin ;;
+      [\\/$]*)
+	 # Absolute (can't be DOS-style, as IFS=:)
+	 test -f "$f" || { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 # Do quote $f, to prevent DOS paths from being IFS'd.
+	 echo "$f";;
+      *) # Relative
+	 if test -f "$f"; then
+	   # Build tree
+	   echo "$f"
+	 elif test -f "$srcdir/$f"; then
+	   # Source tree
+	   echo "$srcdir/$f"
+	 else
+	   # /dev/null tree
+	   { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 fi;;
+      esac
+    done` || { (exit 1); exit 1; }
+  # Remove the trailing spaces.
+  sed 's/[	 ]*$//' $ac_file_inputs >$tmp/in
+
+  # Handle all the #define templates only if necessary.
+  if grep "^[	 ]*#[	 ]*define" $tmp/in >/dev/null; then
+  # If there are no defines, we may have an empty if/fi
+  :
+  cat >$tmp/defines.sed <<CEOF
+/^[	 ]*#[	 ]*define/!b
+t clr
+: clr
+${ac_dA}PACKAGE_NAME${ac_dB}PACKAGE_NAME${ac_dC}""${ac_dD}
+${ac_dA}PACKAGE_TARNAME${ac_dB}PACKAGE_TARNAME${ac_dC}""${ac_dD}
+${ac_dA}PACKAGE_VERSION${ac_dB}PACKAGE_VERSION${ac_dC}""${ac_dD}
+${ac_dA}PACKAGE_STRING${ac_dB}PACKAGE_STRING${ac_dC}""${ac_dD}
+${ac_dA}PACKAGE_BUGREPORT${ac_dB}PACKAGE_BUGREPORT${ac_dC}""${ac_dD}
+${ac_dA}DEV_URANDOM${ac_dB}DEV_URANDOM${ac_dC}"/dev/urandom"${ac_dD}
+${ac_dA}STDC_HEADERS${ac_dB}STDC_HEADERS${ac_dC}1${ac_dD}
+${ac_dA}HAVE_SYS_TYPES_H${ac_dB}HAVE_SYS_TYPES_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_SYS_STAT_H${ac_dB}HAVE_SYS_STAT_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_STDLIB_H${ac_dB}HAVE_STDLIB_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_STRING_H${ac_dB}HAVE_STRING_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_MEMORY_H${ac_dB}HAVE_MEMORY_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_STRINGS_H${ac_dB}HAVE_STRINGS_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_INTTYPES_H${ac_dB}HAVE_INTTYPES_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_STDINT_H${ac_dB}HAVE_STDINT_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_UNISTD_H${ac_dB}HAVE_UNISTD_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_STDLIB_H${ac_dB}HAVE_STDLIB_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_UNISTD_H${ac_dB}HAVE_UNISTD_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_BYTESWAP_H${ac_dB}HAVE_BYTESWAP_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_STDINT_H${ac_dB}HAVE_STDINT_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_SYS_UIO_H${ac_dB}HAVE_SYS_UIO_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_INTTYPES_H${ac_dB}HAVE_INTTYPES_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_SYS_TYPES_H${ac_dB}HAVE_SYS_TYPES_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_SYS_SOCKET_H${ac_dB}HAVE_SYS_SOCKET_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_NETINET_IN_H${ac_dB}HAVE_NETINET_IN_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_ARPA_INET_H${ac_dB}HAVE_ARPA_INET_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_SYSLOG_H${ac_dB}HAVE_SYSLOG_H${ac_dC}1${ac_dD}
+${ac_dA}HAVE_INT8_T${ac_dB}HAVE_INT8_T${ac_dC}1${ac_dD}
+${ac_dA}HAVE_UINT8_T${ac_dB}HAVE_UINT8_T${ac_dC}1${ac_dD}
+${ac_dA}HAVE_INT16_T${ac_dB}HAVE_INT16_T${ac_dC}1${ac_dD}
+${ac_dA}HAVE_UINT16_T${ac_dB}HAVE_UINT16_T${ac_dC}1${ac_dD}
+${ac_dA}HAVE_INT32_T${ac_dB}HAVE_INT32_T${ac_dC}1${ac_dD}
+${ac_dA}HAVE_UINT32_T${ac_dB}HAVE_UINT32_T${ac_dC}1${ac_dD}
+${ac_dA}HAVE_UINT64_T${ac_dB}HAVE_UINT64_T${ac_dC}1${ac_dD}
+${ac_dA}SIZEOF_UNSIGNED_LONG${ac_dB}SIZEOF_UNSIGNED_LONG${ac_dC}8${ac_dD}
+${ac_dA}SIZEOF_UNSIGNED_LONG_LONG${ac_dB}SIZEOF_UNSIGNED_LONG_LONG${ac_dC}8${ac_dD}
+${ac_dA}HAVE_SOCKET${ac_dB}HAVE_SOCKET${ac_dC}1${ac_dD}
+${ac_dA}HAVE_INET_ATON${ac_dB}HAVE_INET_ATON${ac_dC}1${ac_dD}
+CEOF
+  sed -f $tmp/defines.sed $tmp/in >$tmp/out
+  rm -f $tmp/in
+  mv $tmp/out $tmp/in
+
+  cat >$tmp/defines.sed <<CEOF
+/^[	 ]*#[	 ]*define/!b
+t clr
+: clr
+${ac_dA}HAVE_USLEEP${ac_dB}HAVE_USLEEP${ac_dC}1${ac_dD}
+${ac_dA}CPU_CISC${ac_dB}CPU_CISC${ac_dC}1${ac_dD}
+${ac_dA}ENABLE_DEBUGGING${ac_dB}ENABLE_DEBUGGING${ac_dC}1${ac_dD}
+${ac_dA}ERR_REPORTING_STDOUT${ac_dB}ERR_REPORTING_STDOUT${ac_dC}1${ac_dD}
+CEOF
+  sed -f $tmp/defines.sed $tmp/in >$tmp/out
+  rm -f $tmp/in
+  mv $tmp/out $tmp/in
+
+  fi # grep
+
+  # Handle all the #undef templates
+  cat >$tmp/undefs.sed <<CEOF
+/^[	 ]*#[	 ]*undef/!b
+t clr
+: clr
+${ac_uA}PACKAGE_NAME${ac_uB}PACKAGE_NAME${ac_uC}""${ac_uD}
+${ac_uA}PACKAGE_TARNAME${ac_uB}PACKAGE_TARNAME${ac_uC}""${ac_uD}
+${ac_uA}PACKAGE_VERSION${ac_uB}PACKAGE_VERSION${ac_uC}""${ac_uD}
+${ac_uA}PACKAGE_STRING${ac_uB}PACKAGE_STRING${ac_uC}""${ac_uD}
+${ac_uA}PACKAGE_BUGREPORT${ac_uB}PACKAGE_BUGREPORT${ac_uC}""${ac_uD}
+${ac_uA}DEV_URANDOM${ac_uB}DEV_URANDOM${ac_uC}"/dev/urandom"${ac_uD}
+${ac_uA}STDC_HEADERS${ac_uB}STDC_HEADERS${ac_uC}1${ac_uD}
+${ac_uA}HAVE_SYS_TYPES_H${ac_uB}HAVE_SYS_TYPES_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_SYS_STAT_H${ac_uB}HAVE_SYS_STAT_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_STDLIB_H${ac_uB}HAVE_STDLIB_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_STRING_H${ac_uB}HAVE_STRING_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_MEMORY_H${ac_uB}HAVE_MEMORY_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_STRINGS_H${ac_uB}HAVE_STRINGS_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_INTTYPES_H${ac_uB}HAVE_INTTYPES_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_STDINT_H${ac_uB}HAVE_STDINT_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_UNISTD_H${ac_uB}HAVE_UNISTD_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_STDLIB_H${ac_uB}HAVE_STDLIB_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_UNISTD_H${ac_uB}HAVE_UNISTD_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_BYTESWAP_H${ac_uB}HAVE_BYTESWAP_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_STDINT_H${ac_uB}HAVE_STDINT_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_SYS_UIO_H${ac_uB}HAVE_SYS_UIO_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_INTTYPES_H${ac_uB}HAVE_INTTYPES_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_SYS_TYPES_H${ac_uB}HAVE_SYS_TYPES_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_SYS_SOCKET_H${ac_uB}HAVE_SYS_SOCKET_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_NETINET_IN_H${ac_uB}HAVE_NETINET_IN_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_ARPA_INET_H${ac_uB}HAVE_ARPA_INET_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_SYSLOG_H${ac_uB}HAVE_SYSLOG_H${ac_uC}1${ac_uD}
+${ac_uA}HAVE_INT8_T${ac_uB}HAVE_INT8_T${ac_uC}1${ac_uD}
+${ac_uA}HAVE_UINT8_T${ac_uB}HAVE_UINT8_T${ac_uC}1${ac_uD}
+${ac_uA}HAVE_INT16_T${ac_uB}HAVE_INT16_T${ac_uC}1${ac_uD}
+${ac_uA}HAVE_UINT16_T${ac_uB}HAVE_UINT16_T${ac_uC}1${ac_uD}
+${ac_uA}HAVE_INT32_T${ac_uB}HAVE_INT32_T${ac_uC}1${ac_uD}
+${ac_uA}HAVE_UINT32_T${ac_uB}HAVE_UINT32_T${ac_uC}1${ac_uD}
+${ac_uA}HAVE_UINT64_T${ac_uB}HAVE_UINT64_T${ac_uC}1${ac_uD}
+${ac_uA}SIZEOF_UNSIGNED_LONG${ac_uB}SIZEOF_UNSIGNED_LONG${ac_uC}8${ac_uD}
+${ac_uA}SIZEOF_UNSIGNED_LONG_LONG${ac_uB}SIZEOF_UNSIGNED_LONG_LONG${ac_uC}8${ac_uD}
+${ac_uA}HAVE_SOCKET${ac_uB}HAVE_SOCKET${ac_uC}1${ac_uD}
+${ac_uA}HAVE_INET_ATON${ac_uB}HAVE_INET_ATON${ac_uC}1${ac_uD}
+CEOF
+  sed -f $tmp/undefs.sed $tmp/in >$tmp/out
+  rm -f $tmp/in
+  mv $tmp/out $tmp/in
+
+  cat >$tmp/undefs.sed <<CEOF
+/^[	 ]*#[	 ]*undef/!b
+t clr
+: clr
+${ac_uA}HAVE_USLEEP${ac_uB}HAVE_USLEEP${ac_uC}1${ac_uD}
+${ac_uA}CPU_CISC${ac_uB}CPU_CISC${ac_uC}1${ac_uD}
+${ac_uA}ENABLE_DEBUGGING${ac_uB}ENABLE_DEBUGGING${ac_uC}1${ac_uD}
+${ac_uA}ERR_REPORTING_STDOUT${ac_uB}ERR_REPORTING_STDOUT${ac_uC}1${ac_uD}
+s,^[	 ]*#[	 ]*undef[	 ][	 ]*[a-zA-Z_][a-zA-Z_0-9]*,/* & */,
+CEOF
+  sed -f $tmp/undefs.sed $tmp/in >$tmp/out
+  rm -f $tmp/in
+  mv $tmp/out $tmp/in
+
+  # Let's still pretend it is `configure' which instantiates (i.e., don't
+  # use $as_me), people would be surprised to read:
+  #    /* config.h.  Generated by config.status.  */
+  if test x"$ac_file" = x-; then
+    echo "/* Generated by configure.  */" >$tmp/config.h
+  else
+    echo "/* $ac_file.  Generated by configure.  */" >$tmp/config.h
+  fi
+  cat $tmp/in >>$tmp/config.h
+  rm -f $tmp/in
+  if test x"$ac_file" != x-; then
+    if diff $ac_file $tmp/config.h >/dev/null 2>&1; then
+      { echo "$as_me:$LINENO: $ac_file is unchanged" >&5
+echo "$as_me: $ac_file is unchanged" >&6;}
+    else
+      ac_dir=`(dirname "$ac_file") 2>/dev/null ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+      { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+      rm -f $ac_file
+      mv $tmp/config.h $ac_file
+    fi
+  else
+    cat $tmp/config.h
+    rm -f $tmp/config.h
+  fi
+done
+
+{ (exit 0); exit 0; }
diff --git a/config.sub b/config.sub
new file mode 100755
index 0000000..edb6b66
--- /dev/null
+++ b/config.sub
@@ -0,0 +1,1555 @@
+#! /bin/sh
+# Configuration validation subroutine script.
+#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+#   2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+
+timestamp='2004-08-29'
+
+# This file is (in principle) common to ALL GNU software.
+# The presence of a machine in this file suggests that SOME GNU software
+# can handle that machine.  It does not imply ALL GNU software can.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Please send patches to <config-patches@gnu.org>.  Submit a context
+# diff and a properly formatted ChangeLog entry.
+#
+# Configuration subroutine to validate and canonicalize a configuration type.
+# Supply the specified configuration type as an argument.
+# If it is invalid, we print an error message on stderr and exit with code 1.
+# Otherwise, we print the canonical config type on stdout and succeed.
+
+# This file is supposed to be the same for all GNU packages
+# and recognize all the CPU types, system types and aliases
+# that are meaningful with *any* GNU software.
+# Each package is responsible for reporting which valid configurations
+# it does not support.  The user should be able to distinguish
+# a failure to support a valid configuration from a meaningless
+# configuration.
+
+# The goal of this file is to map all the various variations of a given
+# machine specification into a single specification in the form:
+#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or in some cases, the newer four-part form:
+#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# It is wrong to echo any other type of specification.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS
+       $0 [OPTION] ALIAS
+
+Canonicalize a configuration name.
+
+Operation modes:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.sub ($timestamp)
+
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit 0 ;;
+    --version | -v )
+       echo "$version" ; exit 0 ;;
+    --help | --h* | -h )
+       echo "$usage"; exit 0 ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help"
+       exit 1 ;;
+
+    *local*)
+       # First pass through any local machine types.
+       echo $1
+       exit 0;;
+
+    * )
+       break ;;
+  esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+    exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+    exit 1;;
+esac
+
+# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).
+# Here we must recognize all the valid KERNEL-OS combinations.
+maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
+case $maybe_os in
+  nto-qnx* | linux-gnu* | linux-dietlibc | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | \
+  kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | storm-chaos* | os2-emx* | rtmk-nova*)
+    os=-$maybe_os
+    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
+    ;;
+  *)
+    basic_machine=`echo $1 | sed 's/-[^-]*$//'`
+    if [ $basic_machine != $1 ]
+    then os=`echo $1 | sed 's/.*-/-/'`
+    else os=; fi
+    ;;
+esac
+
+### Let's recognize common machines as not being operating systems so
+### that things like config.sub decstation-3100 work.  We also
+### recognize some manufacturers as not being operating systems, so we
+### can provide default operating systems below.
+case $os in
+	-sun*os*)
+		# Prevent following clause from handling this invalid input.
+		;;
+	-dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \
+	-att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \
+	-unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \
+	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
+	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
+	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
+	-apple | -axis | -knuth | -cray)
+		os=
+		basic_machine=$1
+		;;
+	-sim | -cisco | -oki | -wec | -winbond)
+		os=
+		basic_machine=$1
+		;;
+	-scout)
+		;;
+	-wrs)
+		os=-vxworks
+		basic_machine=$1
+		;;
+	-chorusos*)
+		os=-chorusos
+		basic_machine=$1
+		;;
+ 	-chorusrdb)
+ 		os=-chorusrdb
+		basic_machine=$1
+ 		;;
+	-hiux*)
+		os=-hiuxwe2
+		;;
+	-sco5)
+		os=-sco3.2v5
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco4)
+		os=-sco3.2v4
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco3.2.[4-9]*)
+		os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco3.2v[4-9]*)
+		# Don't forget version if it is 3.2v4 or newer.
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco*)
+		os=-sco3.2v2
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-udk*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-isc)
+		os=-isc2.2
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-clix*)
+		basic_machine=clipper-intergraph
+		;;
+	-isc*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-lynx*)
+		os=-lynxos
+		;;
+	-ptx*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'`
+		;;
+	-windowsnt*)
+		os=`echo $os | sed -e 's/windowsnt/winnt/'`
+		;;
+	-psos*)
+		os=-psos
+		;;
+	-mint | -mint[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
+		;;
+esac
+
+# Decode aliases for certain CPU-COMPANY combinations.
+case $basic_machine in
+	# Recognize the basic CPU types without company name.
+	# Some are omitted here because they have special meanings below.
+	1750a | 580 \
+	| a29k \
+	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
+	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
+	| am33_2.0 \
+	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr \
+	| c4x | clipper \
+	| d10v | d30v | dlx | dsp16xx \
+	| fr30 | frv \
+	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+	| i370 | i860 | i960 | ia64 \
+	| ip2k | iq2000 \
+	| m32r | m32rle | m68000 | m68k | m88k | mcore \
+	| mips | mipsbe | mipseb | mipsel | mipsle \
+	| mips16 \
+	| mips64 | mips64el \
+	| mips64vr | mips64vrel \
+	| mips64orion | mips64orionel \
+	| mips64vr4100 | mips64vr4100el \
+	| mips64vr4300 | mips64vr4300el \
+	| mips64vr5000 | mips64vr5000el \
+	| mipsisa32 | mipsisa32el \
+	| mipsisa32r2 | mipsisa32r2el \
+	| mipsisa64 | mipsisa64el \
+	| mipsisa64r2 | mipsisa64r2el \
+	| mipsisa64sb1 | mipsisa64sb1el \
+	| mipsisa64sr71k | mipsisa64sr71kel \
+	| mipstx39 | mipstx39el \
+	| mn10200 | mn10300 \
+	| msp430 \
+	| ns16k | ns32k \
+	| openrisc | or32 \
+	| pdp10 | pdp11 | pj | pjl \
+	| powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
+	| pyramid \
+	| sh | sh[1234] | sh[23]e | sh[34]eb | shbe | shle | sh[1234]le | sh3ele \
+	| sh64 | sh64le \
+	| sparc | sparc64 | sparc86x | sparclet | sparclite | sparcv8 | sparcv9 | sparcv9b \
+	| strongarm \
+	| tahoe | thumb | tic4x | tic80 | tron \
+	| v850 | v850e \
+	| we32k \
+	| x86 | xscale | xstormy16 | xtensa \
+	| z8k)
+		basic_machine=$basic_machine-unknown
+		;;
+	m6811 | m68hc11 | m6812 | m68hc12)
+		# Motorola 68HC11/12.
+		basic_machine=$basic_machine-unknown
+		os=-none
+		;;
+	m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k)
+		;;
+
+	# We use `pc' rather than `unknown'
+	# because (1) that's what they normally are, and
+	# (2) the word "unknown" tends to confuse beginning users.
+	i*86 | x86_64)
+	  basic_machine=$basic_machine-pc
+	  ;;
+	# Object if more than one company name word.
+	*-*-*)
+		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+		exit 1
+		;;
+	# Recognize the basic CPU types with company name.
+	580-* \
+	| a29k-* \
+	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
+	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
+	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
+	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
+	| avr-* \
+	| bs2000-* \
+	| c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \
+	| clipper-* | craynv-* | cydra-* \
+	| d10v-* | d30v-* | dlx-* \
+	| elxsi-* \
+	| f30[01]-* | f700-* | fr30-* | frv-* | fx80-* \
+	| h8300-* | h8500-* \
+	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
+	| i*86-* | i860-* | i960-* | ia64-* \
+	| ip2k-* | iq2000-* \
+	| m32r-* | m32rle-* \
+	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
+	| m88110-* | m88k-* | mcore-* \
+	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
+	| mips16-* \
+	| mips64-* | mips64el-* \
+	| mips64vr-* | mips64vrel-* \
+	| mips64orion-* | mips64orionel-* \
+	| mips64vr4100-* | mips64vr4100el-* \
+	| mips64vr4300-* | mips64vr4300el-* \
+	| mips64vr5000-* | mips64vr5000el-* \
+	| mipsisa32-* | mipsisa32el-* \
+	| mipsisa32r2-* | mipsisa32r2el-* \
+	| mipsisa64-* | mipsisa64el-* \
+	| mipsisa64r2-* | mipsisa64r2el-* \
+	| mipsisa64sb1-* | mipsisa64sb1el-* \
+	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
+	| mipstx39-* | mipstx39el-* \
+	| mmix-* \
+	| msp430-* \
+	| none-* | np1-* | ns16k-* | ns32k-* \
+	| orion-* \
+	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
+	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
+	| pyramid-* \
+	| romp-* | rs6000-* \
+	| sh-* | sh[1234]-* | sh[23]e-* | sh[34]eb-* | shbe-* \
+	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
+	| sparc-* | sparc64-* | sparc86x-* | sparclet-* | sparclite-* \
+	| sparcv8-* | sparcv9-* | sparcv9b-* | strongarm-* | sv1-* | sx?-* \
+	| tahoe-* | thumb-* \
+	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
+	| tron-* \
+	| v850-* | v850e-* | vax-* \
+	| we32k-* \
+	| x86-* | x86_64-* | xps100-* | xscale-* | xstormy16-* \
+	| xtensa-* \
+	| ymp-* \
+	| z8k-*)
+		;;
+	# Recognize the various machine names and aliases which stand
+	# for a CPU type and a company and sometimes even an OS.
+	386bsd)
+		basic_machine=i386-unknown
+		os=-bsd
+		;;
+	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+		basic_machine=m68000-att
+		;;
+	3b*)
+		basic_machine=we32k-att
+		;;
+	a29khif)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+    	abacus)
+		basic_machine=abacus-unknown
+		;;
+	adobe68k)
+		basic_machine=m68010-adobe
+		os=-scout
+		;;
+	alliant | fx80)
+		basic_machine=fx80-alliant
+		;;
+	altos | altos3068)
+		basic_machine=m68k-altos
+		;;
+	am29k)
+		basic_machine=a29k-none
+		os=-bsd
+		;;
+	amd64)
+		basic_machine=x86_64-pc
+		;;
+	amd64-*)
+		basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	amdahl)
+		basic_machine=580-amdahl
+		os=-sysv
+		;;
+	amiga | amiga-*)
+		basic_machine=m68k-unknown
+		;;
+	amigaos | amigados)
+		basic_machine=m68k-unknown
+		os=-amigaos
+		;;
+	amigaunix | amix)
+		basic_machine=m68k-unknown
+		os=-sysv4
+		;;
+	apollo68)
+		basic_machine=m68k-apollo
+		os=-sysv
+		;;
+	apollo68bsd)
+		basic_machine=m68k-apollo
+		os=-bsd
+		;;
+	aux)
+		basic_machine=m68k-apple
+		os=-aux
+		;;
+	balance)
+		basic_machine=ns32k-sequent
+		os=-dynix
+		;;
+	c90)
+		basic_machine=c90-cray
+		os=-unicos
+		;;
+	convex-c1)
+		basic_machine=c1-convex
+		os=-bsd
+		;;
+	convex-c2)
+		basic_machine=c2-convex
+		os=-bsd
+		;;
+	convex-c32)
+		basic_machine=c32-convex
+		os=-bsd
+		;;
+	convex-c34)
+		basic_machine=c34-convex
+		os=-bsd
+		;;
+	convex-c38)
+		basic_machine=c38-convex
+		os=-bsd
+		;;
+	cray | j90)
+		basic_machine=j90-cray
+		os=-unicos
+		;;
+	craynv)
+		basic_machine=craynv-cray
+		os=-unicosmp
+		;;
+	cr16c)
+		basic_machine=cr16c-unknown
+		os=-elf
+		;;
+	crds | unos)
+		basic_machine=m68k-crds
+		;;
+	crisv32 | crisv32-* | etraxfs*)
+		basic_machine=crisv32-axis
+		;;
+	cris | cris-* | etrax*)
+		basic_machine=cris-axis
+		;;
+	crx)
+		basic_machine=crx-unknown
+		os=-elf
+		;;
+	da30 | da30-*)
+		basic_machine=m68k-da30
+		;;
+	decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
+		basic_machine=mips-dec
+		;;
+	decsystem10* | dec10*)
+		basic_machine=pdp10-dec
+		os=-tops10
+		;;
+	decsystem20* | dec20*)
+		basic_machine=pdp10-dec
+		os=-tops20
+		;;
+	delta | 3300 | motorola-3300 | motorola-delta \
+	      | 3300-motorola | delta-motorola)
+		basic_machine=m68k-motorola
+		;;
+	delta88)
+		basic_machine=m88k-motorola
+		os=-sysv3
+		;;
+	dpx20 | dpx20-*)
+		basic_machine=rs6000-bull
+		os=-bosx
+		;;
+	dpx2* | dpx2*-bull)
+		basic_machine=m68k-bull
+		os=-sysv3
+		;;
+	ebmon29k)
+		basic_machine=a29k-amd
+		os=-ebmon
+		;;
+	elxsi)
+		basic_machine=elxsi-elxsi
+		os=-bsd
+		;;
+	encore | umax | mmax)
+		basic_machine=ns32k-encore
+		;;
+	es1800 | OSE68k | ose68k | ose | OSE)
+		basic_machine=m68k-ericsson
+		os=-ose
+		;;
+	fx2800)
+		basic_machine=i860-alliant
+		;;
+	genix)
+		basic_machine=ns32k-ns
+		;;
+	gmicro)
+		basic_machine=tron-gmicro
+		os=-sysv
+		;;
+	go32)
+		basic_machine=i386-pc
+		os=-go32
+		;;
+	h3050r* | hiux*)
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	h8300hms)
+		basic_machine=h8300-hitachi
+		os=-hms
+		;;
+	h8300xray)
+		basic_machine=h8300-hitachi
+		os=-xray
+		;;
+	h8500hms)
+		basic_machine=h8500-hitachi
+		os=-hms
+		;;
+	harris)
+		basic_machine=m88k-harris
+		os=-sysv3
+		;;
+	hp300-*)
+		basic_machine=m68k-hp
+		;;
+	hp300bsd)
+		basic_machine=m68k-hp
+		os=-bsd
+		;;
+	hp300hpux)
+		basic_machine=m68k-hp
+		os=-hpux
+		;;
+	hp3k9[0-9][0-9] | hp9[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hp9k2[0-9][0-9] | hp9k31[0-9])
+		basic_machine=m68000-hp
+		;;
+	hp9k3[2-9][0-9])
+		basic_machine=m68k-hp
+		;;
+	hp9k6[0-9][0-9] | hp6[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hp9k7[0-79][0-9] | hp7[0-79][0-9])
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k78[0-9] | hp78[0-9])
+		# FIXME: really hppa2.0-hp
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
+		# FIXME: really hppa2.0-hp
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[0-9][13679] | hp8[0-9][13679])
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[0-9][0-9] | hp8[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hppa-next)
+		os=-nextstep3
+		;;
+	hppaosf)
+		basic_machine=hppa1.1-hp
+		os=-osf
+		;;
+	hppro)
+		basic_machine=hppa1.1-hp
+		os=-proelf
+		;;
+	i370-ibm* | ibm*)
+		basic_machine=i370-ibm
+		;;
+# I'm not sure what "Sysv32" means.  Should this be sysv3.2?
+	i*86v32)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv32
+		;;
+	i*86v4*)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv4
+		;;
+	i*86v)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv
+		;;
+	i*86sol2)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-solaris2
+		;;
+	i386mach)
+		basic_machine=i386-mach
+		os=-mach
+		;;
+	i386-vsta | vsta)
+		basic_machine=i386-unknown
+		os=-vsta
+		;;
+	iris | iris4d)
+		basic_machine=mips-sgi
+		case $os in
+		    -irix*)
+			;;
+		    *)
+			os=-irix4
+			;;
+		esac
+		;;
+	isi68 | isi)
+		basic_machine=m68k-isi
+		os=-sysv
+		;;
+	m88k-omron*)
+		basic_machine=m88k-omron
+		;;
+	magnum | m3230)
+		basic_machine=mips-mips
+		os=-sysv
+		;;
+	merlin)
+		basic_machine=ns32k-utek
+		os=-sysv
+		;;
+	mingw32)
+		basic_machine=i386-pc
+		os=-mingw32
+		;;
+	miniframe)
+		basic_machine=m68000-convergent
+		;;
+	*mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
+		;;
+	mips3*-*)
+		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
+		;;
+	mips3*)
+		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
+		;;
+	monitor)
+		basic_machine=m68k-rom68k
+		os=-coff
+		;;
+	morphos)
+		basic_machine=powerpc-unknown
+		os=-morphos
+		;;
+	msdos)
+		basic_machine=i386-pc
+		os=-msdos
+		;;
+	mvs)
+		basic_machine=i370-ibm
+		os=-mvs
+		;;
+	ncr3000)
+		basic_machine=i486-ncr
+		os=-sysv4
+		;;
+	netbsd386)
+		basic_machine=i386-unknown
+		os=-netbsd
+		;;
+	netwinder)
+		basic_machine=armv4l-rebel
+		os=-linux
+		;;
+	news | news700 | news800 | news900)
+		basic_machine=m68k-sony
+		os=-newsos
+		;;
+	news1000)
+		basic_machine=m68030-sony
+		os=-newsos
+		;;
+	news-3600 | risc-news)
+		basic_machine=mips-sony
+		os=-newsos
+		;;
+	necv70)
+		basic_machine=v70-nec
+		os=-sysv
+		;;
+	next | m*-next )
+		basic_machine=m68k-next
+		case $os in
+		    -nextstep* )
+			;;
+		    -ns2*)
+		      os=-nextstep2
+			;;
+		    *)
+		      os=-nextstep3
+			;;
+		esac
+		;;
+	nh3000)
+		basic_machine=m68k-harris
+		os=-cxux
+		;;
+	nh[45]000)
+		basic_machine=m88k-harris
+		os=-cxux
+		;;
+	nindy960)
+		basic_machine=i960-intel
+		os=-nindy
+		;;
+	mon960)
+		basic_machine=i960-intel
+		os=-mon960
+		;;
+	nonstopux)
+		basic_machine=mips-compaq
+		os=-nonstopux
+		;;
+	np1)
+		basic_machine=np1-gould
+		;;
+	nsr-tandem)
+		basic_machine=nsr-tandem
+		;;
+	op50n-* | op60c-*)
+		basic_machine=hppa1.1-oki
+		os=-proelf
+		;;
+	or32 | or32-*)
+		basic_machine=or32-unknown
+		os=-coff
+		;;
+	os400)
+		basic_machine=powerpc-ibm
+		os=-os400
+		;;
+	OSE68000 | ose68000)
+		basic_machine=m68000-ericsson
+		os=-ose
+		;;
+	os68k)
+		basic_machine=m68k-none
+		os=-os68k
+		;;
+	pa-hitachi)
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	paragon)
+		basic_machine=i860-intel
+		os=-osf
+		;;
+	pbd)
+		basic_machine=sparc-tti
+		;;
+	pbb)
+		basic_machine=m68k-tti
+		;;
+	pc532 | pc532-*)
+		basic_machine=ns32k-pc532
+		;;
+	pentium | p5 | k5 | k6 | nexgen | viac3)
+		basic_machine=i586-pc
+		;;
+	pentiumpro | p6 | 6x86 | athlon | athlon_*)
+		basic_machine=i686-pc
+		;;
+	pentiumii | pentium2 | pentiumiii | pentium3)
+		basic_machine=i686-pc
+		;;
+	pentium4)
+		basic_machine=i786-pc
+		;;
+	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+		basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentiumpro-* | p6-* | 6x86-* | athlon-*)
+		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentium4-*)
+		basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pn)
+		basic_machine=pn-gould
+		;;
+	power)	basic_machine=power-ibm
+		;;
+	ppc)	basic_machine=powerpc-unknown
+		;;
+	ppc-*)	basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppcle | powerpclittle | ppc-le | powerpc-little)
+		basic_machine=powerpcle-unknown
+		;;
+	ppcle-* | powerpclittle-*)
+		basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppc64)	basic_machine=powerpc64-unknown
+		;;
+	ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppc64le | powerpc64little | ppc64-le | powerpc64-little)
+		basic_machine=powerpc64le-unknown
+		;;
+	ppc64le-* | powerpc64little-*)
+		basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ps2)
+		basic_machine=i386-ibm
+		;;
+	pw32)
+		basic_machine=i586-unknown
+		os=-pw32
+		;;
+	rom68k)
+		basic_machine=m68k-rom68k
+		os=-coff
+		;;
+	rm[46]00)
+		basic_machine=mips-siemens
+		;;
+	rtpc | rtpc-*)
+		basic_machine=romp-ibm
+		;;
+	s390 | s390-*)
+		basic_machine=s390-ibm
+		;;
+	s390x | s390x-*)
+		basic_machine=s390x-ibm
+		;;
+	sa29200)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	sb1)
+		basic_machine=mipsisa64sb1-unknown
+		;;
+	sb1el)
+		basic_machine=mipsisa64sb1el-unknown
+		;;
+	sei)
+		basic_machine=mips-sei
+		os=-seiux
+		;;
+	sequent)
+		basic_machine=i386-sequent
+		;;
+	sh)
+		basic_machine=sh-hitachi
+		os=-hms
+		;;
+	sh64)
+		basic_machine=sh64-unknown
+		;;
+	sparclite-wrs | simso-wrs)
+		basic_machine=sparclite-wrs
+		os=-vxworks
+		;;
+	sps7)
+		basic_machine=m68k-bull
+		os=-sysv2
+		;;
+	spur)
+		basic_machine=spur-unknown
+		;;
+	st2000)
+		basic_machine=m68k-tandem
+		;;
+	stratus)
+		basic_machine=i860-stratus
+		os=-sysv4
+		;;
+	sun2)
+		basic_machine=m68000-sun
+		;;
+	sun2os3)
+		basic_machine=m68000-sun
+		os=-sunos3
+		;;
+	sun2os4)
+		basic_machine=m68000-sun
+		os=-sunos4
+		;;
+	sun3os3)
+		basic_machine=m68k-sun
+		os=-sunos3
+		;;
+	sun3os4)
+		basic_machine=m68k-sun
+		os=-sunos4
+		;;
+	sun4os3)
+		basic_machine=sparc-sun
+		os=-sunos3
+		;;
+	sun4os4)
+		basic_machine=sparc-sun
+		os=-sunos4
+		;;
+	sun4sol2)
+		basic_machine=sparc-sun
+		os=-solaris2
+		;;
+	sun3 | sun3-*)
+		basic_machine=m68k-sun
+		;;
+	sun4)
+		basic_machine=sparc-sun
+		;;
+	sun386 | sun386i | roadrunner)
+		basic_machine=i386-sun
+		;;
+	sv1)
+		basic_machine=sv1-cray
+		os=-unicos
+		;;
+	symmetry)
+		basic_machine=i386-sequent
+		os=-dynix
+		;;
+	t3e)
+		basic_machine=alphaev5-cray
+		os=-unicos
+		;;
+	t90)
+		basic_machine=t90-cray
+		os=-unicos
+		;;
+	tic54x | c54x*)
+		basic_machine=tic54x-unknown
+		os=-coff
+		;;
+	tic55x | c55x*)
+		basic_machine=tic55x-unknown
+		os=-coff
+		;;
+	tic6x | c6x*)
+		basic_machine=tic6x-unknown
+		os=-coff
+		;;
+	tx39)
+		basic_machine=mipstx39-unknown
+		;;
+	tx39el)
+		basic_machine=mipstx39el-unknown
+		;;
+	toad1)
+		basic_machine=pdp10-xkl
+		os=-tops20
+		;;
+	tower | tower-32)
+		basic_machine=m68k-ncr
+		;;
+	tpf)
+		basic_machine=s390x-ibm
+		os=-tpf
+		;;
+	udi29k)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	ultra3)
+		basic_machine=a29k-nyu
+		os=-sym1
+		;;
+	v810 | necv810)
+		basic_machine=v810-nec
+		os=-none
+		;;
+	vaxv)
+		basic_machine=vax-dec
+		os=-sysv
+		;;
+	vms)
+		basic_machine=vax-dec
+		os=-vms
+		;;
+	vpp*|vx|vx-*)
+		basic_machine=f301-fujitsu
+		;;
+	vxworks960)
+		basic_machine=i960-wrs
+		os=-vxworks
+		;;
+	vxworks68)
+		basic_machine=m68k-wrs
+		os=-vxworks
+		;;
+	vxworks29k)
+		basic_machine=a29k-wrs
+		os=-vxworks
+		;;
+	w65*)
+		basic_machine=w65-wdc
+		os=-none
+		;;
+	w89k-*)
+		basic_machine=hppa1.1-winbond
+		os=-proelf
+		;;
+	xps | xps100)
+		basic_machine=xps100-honeywell
+		;;
+	ymp)
+		basic_machine=ymp-cray
+		os=-unicos
+		;;
+	z8k-*-coff)
+		basic_machine=z8k-unknown
+		os=-sim
+		;;
+	none)
+		basic_machine=none-none
+		os=-none
+		;;
+
+# Here we handle the default manufacturer of certain CPU types.  It is in
+# some cases the only manufacturer, in others, it is the most popular.
+	w89k)
+		basic_machine=hppa1.1-winbond
+		;;
+	op50n)
+		basic_machine=hppa1.1-oki
+		;;
+	op60c)
+		basic_machine=hppa1.1-oki
+		;;
+	romp)
+		basic_machine=romp-ibm
+		;;
+	mmix)
+		basic_machine=mmix-knuth
+		;;
+	rs6000)
+		basic_machine=rs6000-ibm
+		;;
+	vax)
+		basic_machine=vax-dec
+		;;
+	pdp10)
+		# there are many clones, so DEC is not a safe bet
+		basic_machine=pdp10-unknown
+		;;
+	pdp11)
+		basic_machine=pdp11-dec
+		;;
+	we32k)
+		basic_machine=we32k-att
+		;;
+	sh3 | sh4 | sh[34]eb | sh[1234]le | sh[23]ele)
+		basic_machine=sh-unknown
+		;;
+	sh64)
+		basic_machine=sh64-unknown
+		;;
+	sparc | sparcv8 | sparcv9 | sparcv9b)
+		basic_machine=sparc-sun
+		;;
+	cydra)
+		basic_machine=cydra-cydrome
+		;;
+	orion)
+		basic_machine=orion-highlevel
+		;;
+	orion105)
+		basic_machine=clipper-highlevel
+		;;
+	mac | mpw | mac-mpw)
+		basic_machine=m68k-apple
+		;;
+	pmac | pmac-mpw)
+		basic_machine=powerpc-apple
+		;;
+	*-unknown)
+		# Make sure to match an already-canonicalized machine name.
+		;;
+	*)
+		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+		exit 1
+		;;
+esac
+
+# Here we canonicalize certain aliases for manufacturers.
+case $basic_machine in
+	*-digital*)
+		basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'`
+		;;
+	*-commodore*)
+		basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'`
+		;;
+	*)
+		;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if [ x"$os" != x"" ]
+then
+case $os in
+        # First match some system type aliases
+        # that might get confused with valid system types.
+	# -solaris* is a basic system type, with this one exception.
+	-solaris1 | -solaris1.*)
+		os=`echo $os | sed -e 's|solaris1|sunos4|'`
+		;;
+	-solaris)
+		os=-solaris2
+		;;
+	-svr4*)
+		os=-sysv4
+		;;
+	-unixware*)
+		os=-sysv4.2uw
+		;;
+	-gnu/linux*)
+		os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
+		;;
+	# First accept the basic system types.
+	# The portable systems comes first.
+	# Each alternative MUST END IN A *, to match a version number.
+	# -sysv* is not here because it comes later, after sysvr4.
+	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
+	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -sunos | -sunos[34]*\
+	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \
+	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
+	      | -aos* \
+	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
+	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
+	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* | -openbsd* \
+	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
+	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
+	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
+	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
+	      | -chorusos* | -chorusrdb* \
+	      | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+	      | -mingw32* | -linux-gnu* | -linux-uclibc* | -uxpv* | -beos* | -mpeix* | -udk* \
+	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
+	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
+	      | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
+	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
+	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
+	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly*)
+	# Remember, each alternative MUST END IN *, to match a version number.
+		;;
+	-qnx*)
+		case $basic_machine in
+		    x86-* | i*86-*)
+			;;
+		    *)
+			os=-nto$os
+			;;
+		esac
+		;;
+	-nto-qnx*)
+		;;
+	-nto*)
+		os=`echo $os | sed -e 's|nto|nto-qnx|'`
+		;;
+	-sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \
+	      | -windows* | -osx | -abug | -netware* | -os9* | -beos* \
+	      | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
+		;;
+	-mac*)
+		os=`echo $os | sed -e 's|mac|macos|'`
+		;;
+	-linux-dietlibc)
+		os=-linux-dietlibc
+		;;
+	-linux*)
+		os=`echo $os | sed -e 's|linux|linux-gnu|'`
+		;;
+	-sunos5*)
+		os=`echo $os | sed -e 's|sunos5|solaris2|'`
+		;;
+	-sunos6*)
+		os=`echo $os | sed -e 's|sunos6|solaris3|'`
+		;;
+	-opened*)
+		os=-openedition
+		;;
+        -os400*)
+		os=-os400
+		;;
+	-wince*)
+		os=-wince
+		;;
+	-osfrose*)
+		os=-osfrose
+		;;
+	-osf*)
+		os=-osf
+		;;
+	-utek*)
+		os=-bsd
+		;;
+	-dynix*)
+		os=-bsd
+		;;
+	-acis*)
+		os=-aos
+		;;
+	-atheos*)
+		os=-atheos
+		;;
+	-syllable*)
+		os=-syllable
+		;;
+	-386bsd)
+		os=-bsd
+		;;
+	-ctix* | -uts*)
+		os=-sysv
+		;;
+	-nova*)
+		os=-rtmk-nova
+		;;
+	-ns2 )
+		os=-nextstep2
+		;;
+	-nsk*)
+		os=-nsk
+		;;
+	# Preserve the version number of sinix5.
+	-sinix5.*)
+		os=`echo $os | sed -e 's|sinix|sysv|'`
+		;;
+	-sinix*)
+		os=-sysv4
+		;;
+        -tpf*)
+		os=-tpf
+		;;
+	-triton*)
+		os=-sysv3
+		;;
+	-oss*)
+		os=-sysv3
+		;;
+	-svr4)
+		os=-sysv4
+		;;
+	-svr3)
+		os=-sysv3
+		;;
+	-sysvr4)
+		os=-sysv4
+		;;
+	# This must come after -sysvr4.
+	-sysv*)
+		;;
+	-ose*)
+		os=-ose
+		;;
+	-es1800*)
+		os=-ose
+		;;
+	-xenix)
+		os=-xenix
+		;;
+	-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+		os=-mint
+		;;
+	-aros*)
+		os=-aros
+		;;
+	-kaos*)
+		os=-kaos
+		;;
+	-none)
+		;;
+	*)
+		# Get rid of the `-' at the beginning of $os.
+		os=`echo $os | sed 's/[^-]*-//'`
+		echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
+		exit 1
+		;;
+esac
+else
+
+# Here we handle the default operating systems that come with various machines.
+# The value should be what the vendor currently ships out the door with their
+# machine or put another way, the most popular os provided with the machine.
+
+# Note that if you're going to try to match "-MANUFACTURER" here (say,
+# "-sun"), then you have to tell the case statement up towards the top
+# that MANUFACTURER isn't an operating system.  Otherwise, code above
+# will signal an error saying that MANUFACTURER isn't an operating
+# system, and we'll never get to this point.
+
+case $basic_machine in
+	*-acorn)
+		os=-riscix1.2
+		;;
+	arm*-rebel)
+		os=-linux
+		;;
+	arm*-semi)
+		os=-aout
+		;;
+    c4x-* | tic4x-*)
+        os=-coff
+        ;;
+	# This must come before the *-dec entry.
+	pdp10-*)
+		os=-tops20
+		;;
+	pdp11-*)
+		os=-none
+		;;
+	*-dec | vax-*)
+		os=-ultrix4.2
+		;;
+	m68*-apollo)
+		os=-domain
+		;;
+	i386-sun)
+		os=-sunos4.0.2
+		;;
+	m68000-sun)
+		os=-sunos3
+		# This also exists in the configure program, but was not the
+		# default.
+		# os=-sunos4
+		;;
+	m68*-cisco)
+		os=-aout
+		;;
+	mips*-cisco)
+		os=-elf
+		;;
+	mips*-*)
+		os=-elf
+		;;
+	or32-*)
+		os=-coff
+		;;
+	*-tti)	# must be before sparc entry or we get the wrong os.
+		os=-sysv3
+		;;
+	sparc-* | *-sun)
+		os=-sunos4.1.1
+		;;
+	*-be)
+		os=-beos
+		;;
+	*-ibm)
+		os=-aix
+		;;
+    	*-knuth)
+		os=-mmixware
+		;;
+	*-wec)
+		os=-proelf
+		;;
+	*-winbond)
+		os=-proelf
+		;;
+	*-oki)
+		os=-proelf
+		;;
+	*-hp)
+		os=-hpux
+		;;
+	*-hitachi)
+		os=-hiux
+		;;
+	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
+		os=-sysv
+		;;
+	*-cbm)
+		os=-amigaos
+		;;
+	*-dg)
+		os=-dgux
+		;;
+	*-dolphin)
+		os=-sysv3
+		;;
+	m68k-ccur)
+		os=-rtu
+		;;
+	m88k-omron*)
+		os=-luna
+		;;
+	*-next )
+		os=-nextstep
+		;;
+	*-sequent)
+		os=-ptx
+		;;
+	*-crds)
+		os=-unos
+		;;
+	*-ns)
+		os=-genix
+		;;
+	i370-*)
+		os=-mvs
+		;;
+	*-next)
+		os=-nextstep3
+		;;
+	*-gould)
+		os=-sysv
+		;;
+	*-highlevel)
+		os=-bsd
+		;;
+	*-encore)
+		os=-bsd
+		;;
+	*-sgi)
+		os=-irix
+		;;
+	*-siemens)
+		os=-sysv4
+		;;
+	*-masscomp)
+		os=-rtu
+		;;
+	f30[01]-fujitsu | f700-fujitsu)
+		os=-uxpv
+		;;
+	*-rom68k)
+		os=-coff
+		;;
+	*-*bug)
+		os=-coff
+		;;
+	*-apple)
+		os=-macos
+		;;
+	*-atari*)
+		os=-mint
+		;;
+	*)
+		os=-none
+		;;
+esac
+fi
+
+# Here we handle the case where we know the os, and the CPU type, but not the
+# manufacturer.  We pick the logical manufacturer.
+vendor=unknown
+case $basic_machine in
+	*-unknown)
+		case $os in
+			-riscix*)
+				vendor=acorn
+				;;
+			-sunos*)
+				vendor=sun
+				;;
+			-aix*)
+				vendor=ibm
+				;;
+			-beos*)
+				vendor=be
+				;;
+			-hpux*)
+				vendor=hp
+				;;
+			-mpeix*)
+				vendor=hp
+				;;
+			-hiux*)
+				vendor=hitachi
+				;;
+			-unos*)
+				vendor=crds
+				;;
+			-dgux*)
+				vendor=dg
+				;;
+			-luna*)
+				vendor=omron
+				;;
+			-genix*)
+				vendor=ns
+				;;
+			-mvs* | -opened*)
+				vendor=ibm
+				;;
+			-os400*)
+				vendor=ibm
+				;;
+			-ptx*)
+				vendor=sequent
+				;;
+			-tpf*)
+				vendor=ibm
+				;;
+			-vxsim* | -vxworks* | -windiss*)
+				vendor=wrs
+				;;
+			-aux*)
+				vendor=apple
+				;;
+			-hms*)
+				vendor=hitachi
+				;;
+			-mpw* | -macos*)
+				vendor=apple
+				;;
+			-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+				vendor=atari
+				;;
+			-vos*)
+				vendor=stratus
+				;;
+		esac
+		basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"`
+		;;
+esac
+
+echo $basic_machine$os
+exit 0
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/config_in.h b/config_in.h
new file mode 100644
index 0000000..5951861
--- /dev/null
+++ b/config_in.h
@@ -0,0 +1,170 @@
+/* config_in.h.  Generated from configure.in by autoheader.  */
+
+/* Define if building for a CISC machine (e.g. Intel). */
+#undef CPU_CISC
+
+/* Define if building for a RISC machine (assume slow byte access). */
+#undef CPU_RISC
+
+/* Path to random device */
+#undef DEV_URANDOM
+
+/* Define to compile in dynamic debugging system. */
+#undef ENABLE_DEBUGGING
+
+/* Report errors to this file. */
+#undef ERR_REPORTING_FILE
+
+/* Define to use logging to stdout. */
+#undef ERR_REPORTING_STDOUT
+
+/* Define this to use ISMAcryp code. */
+#undef GENERIC_AESICM
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#undef HAVE_ARPA_INET_H
+
+/* Define to 1 if you have the <byteswap.h> header file. */
+#undef HAVE_BYTESWAP_H
+
+/* Define to 1 if you have the `inet_aton' function. */
+#undef HAVE_INET_ATON
+
+/* Define to 1 if the system has the type `int16_t'. */
+#undef HAVE_INT16_T
+
+/* Define to 1 if the system has the type `int32_t'. */
+#undef HAVE_INT32_T
+
+/* Define to 1 if the system has the type `int8_t'. */
+#undef HAVE_INT8_T
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the `socket' library (-lsocket). */
+#undef HAVE_LIBSOCKET
+
+/* Define to 1 if you have the <machine/types.h> header file. */
+#undef HAVE_MACHINE_TYPES_H
+
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#undef HAVE_NETINET_IN_H
+
+/* Define to 1 if you have the `socket' function. */
+#undef HAVE_SOCKET
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the <syslog.h> header file. */
+#undef HAVE_SYSLOG_H
+
+/* Define to 1 if you have the <sys/int_types.h> header file. */
+#undef HAVE_SYS_INT_TYPES_H
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#undef HAVE_SYS_SOCKET_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#undef HAVE_SYS_UIO_H
+
+/* Define to 1 if the system has the type `uint16_t'. */
+#undef HAVE_UINT16_T
+
+/* Define to 1 if the system has the type `uint32_t'. */
+#undef HAVE_UINT32_T
+
+/* Define to 1 if the system has the type `uint64_t'. */
+#undef HAVE_UINT64_T
+
+/* Define to 1 if the system has the type `uint8_t'. */
+#undef HAVE_UINT8_T
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to 1 if you have the `usleep' function. */
+#undef HAVE_USLEEP
+
+/* Define to 1 if you have the <windows.h> header file. */
+#undef HAVE_WINDOWS_H
+
+/* Define to 1 if you have the <winsock2.h> header file. */
+#undef HAVE_WINSOCK2_H
+
+/* Define to use X86 inlined assembly code */
+#undef HAVE_X86
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* The size of a `unsigned long', as computed by sizeof. */
+#undef SIZEOF_UNSIGNED_LONG
+
+/* The size of a `unsigned long long', as computed by sizeof. */
+#undef SIZEOF_UNSIGNED_LONG_LONG
+
+/* Define to use GDOI. */
+#undef SRTP_GDOI
+
+/* Define to compile for kernel contexts. */
+#undef SRTP_KERNEL
+
+/* Define to compile for Linux kernel context. */
+#undef SRTP_KERNEL_LINUX
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Write errors to this file */
+#undef USE_ERR_REPORTING_FILE
+
+/* Define to use syslog logging. */
+#undef USE_SYSLOG
+
+/* Define to 1 if your processor stores words with the most significant byte
+   first (like Motorola and SPARC, unlike Intel and VAX). */
+#undef WORDS_BIGENDIAN
+
+/* Define to empty if `const' does not conform to ANSI C. */
+#undef const
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+#undef inline
+#endif
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+#undef size_t
diff --git a/configure b/configure
new file mode 100755
index 0000000..1bc6fc4
--- /dev/null
+++ b/configure
@@ -0,0 +1,8606 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.59.
+#
+# Copyright (C) 2003 Free Software Foundation, Inc.
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## --------------------- ##
+## M4sh Initialization.  ##
+## --------------------- ##
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+  set -o posix
+fi
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# Support unset when possible.
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+
+# Work around bugs in pre-3.0 UWIN ksh.
+$as_unset ENV MAIL MAILPATH
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+for as_var in \
+  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+  LC_TELEPHONE LC_TIME
+do
+  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
+    eval $as_var=C; export $as_var
+  else
+    $as_unset $as_var
+  fi
+done
+
+# Required to use basename.
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename /) >/dev/null 2>&1 && test "X`basename / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+
+# Name of the executable.
+as_me=`$as_basename "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)$' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; }
+  	  /^X\/\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\/\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+
+
+# PATH needs CR, and LINENO needs CR and PATH.
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+
+
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2"  || {
+  # Find who we are.  Look in the path if we contain no path at all
+  # relative or not.
+  case $0 in
+    *[\\/]* ) as_myself=$0 ;;
+    *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+done
+
+       ;;
+  esac
+  # We did not find ourselves, most probably we were run as `sh COMMAND'
+  # in which case we are not to be found in the path.
+  if test "x$as_myself" = x; then
+    as_myself=$0
+  fi
+  if test ! -f "$as_myself"; then
+    { echo "$as_me: error: cannot find myself; rerun with an absolute path" >&2
+   { (exit 1); exit 1; }; }
+  fi
+  case $CONFIG_SHELL in
+  '')
+    as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for as_base in sh bash ksh sh5; do
+	 case $as_dir in
+	 /*)
+	   if ("$as_dir/$as_base" -c '
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2" ') 2>/dev/null; then
+	     $as_unset BASH_ENV || test "${BASH_ENV+set}" != set || { BASH_ENV=; export BASH_ENV; }
+	     $as_unset ENV || test "${ENV+set}" != set || { ENV=; export ENV; }
+	     CONFIG_SHELL=$as_dir/$as_base
+	     export CONFIG_SHELL
+	     exec "$CONFIG_SHELL" "$0" ${1+"$@"}
+	   fi;;
+	 esac
+       done
+done
+;;
+  esac
+
+  # Create $as_me.lineno as a copy of $as_myself, but with $LINENO
+  # uniformly replaced by the line number.  The first 'sed' inserts a
+  # line-number line before each line; the second 'sed' does the real
+  # work.  The second script uses 'N' to pair each line-number line
+  # with the numbered line, and appends trailing '-' during
+  # substitution so that $LINENO is not a special case at line end.
+  # (Raja R Harinath suggested sed '=', and Paul Eggert wrote the
+  # second 'sed' script.  Blame Lee E. McMahon for sed's syntax.  :-)
+  sed '=' <$as_myself |
+    sed '
+      N
+      s,$,-,
+      : loop
+      s,^\(['$as_cr_digits']*\)\(.*\)[$]LINENO\([^'$as_cr_alnum'_]\),\1\2\1\3,
+      t loop
+      s,-$,,
+      s,^['$as_cr_digits']*\n,,
+    ' >$as_me.lineno &&
+  chmod +x $as_me.lineno ||
+    { echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2
+   { (exit 1); exit 1; }; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensible to this).
+  . ./$as_me.lineno
+  # Exit status is that of the last command.
+  exit
+}
+
+
+case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
+  *c*,-n*) ECHO_N= ECHO_C='
+' ECHO_T='	' ;;
+  *c*,*  ) ECHO_N=-n ECHO_C= ECHO_T= ;;
+  *)       ECHO_N= ECHO_C='\c' ECHO_T= ;;
+esac
+
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+rm -f conf$$ conf$$.exe conf$$.file
+echo >conf$$.file
+if ln -s conf$$.file conf$$ 2>/dev/null; then
+  # We could just check for DJGPP; but this test a) works b) is more generic
+  # and c) will remain valid once DJGPP supports symlinks (DJGPP 2.04).
+  if test -f conf$$.exe; then
+    # Don't use ln at all; we don't have any links
+    as_ln_s='cp -p'
+  else
+    as_ln_s='ln -s'
+  fi
+elif ln conf$$.file conf$$ 2>/dev/null; then
+  as_ln_s=ln
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.file
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p=:
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_executable_p="test -f"
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.
+as_nl='
+'
+IFS=" 	$as_nl"
+
+# CDPATH.
+$as_unset CDPATH
+
+
+# Name of the host.
+# hostname on some systems (SVR3.2, Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+exec 6>&1
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_config_libobj_dir=.
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+# Maximum number of lines to put in a shell here document.
+# This variable seems obsolete.  It should probably be removed, and
+# only ac_max_sed_lines should be used.
+: ${ac_max_here_lines=38}
+
+# Identity of this package.
+PACKAGE_NAME=
+PACKAGE_TARNAME=
+PACKAGE_VERSION=
+PACKAGE_STRING=
+PACKAGE_BUGREPORT=
+
+ac_unique_file="srtp"
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stdio.h>
+#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#if HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#if STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# if HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#if HAVE_STRING_H
+# if !STDC_HEADERS && HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+# include <string.h>
+#endif
+#if HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#else
+# if HAVE_STDINT_H
+#  include <stdint.h>
+# endif
+#endif
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS RANLIB ac_ct_RANLIB CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA build build_cpu build_vendor build_os host host_cpu host_vendor host_os EXE RNG_OBJS CPP EGREP GDOI_OBJS LIBOBJS LTLIBOBJS'
+ac_subst_files=''
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datadir='${prefix}/share'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+libdir='${exec_prefix}/lib'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+infodir='${prefix}/info'
+mandir='${prefix}/man'
+
+ac_prev=
+for ac_option
+do
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval "$ac_prev=\$ac_option"
+    ac_prev=
+    continue
+  fi
+
+  ac_optarg=`expr "x$ac_option" : 'x[^=]*=\(.*\)'`
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case $ac_option in
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$ac_optarg ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build_alias ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build_alias=$ac_optarg ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file=$ac_optarg ;;
+
+  --config-cache | -C)
+    cache_file=config.cache ;;
+
+  -datadir | --datadir | --datadi | --datad | --data | --dat | --da)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=* | --data=* | --dat=* \
+  | --da=*)
+    datadir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_feature=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_feature" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid feature name: $ac_feature" >&2
+   { (exit 1); exit 1; }; }
+    ac_feature=`echo $ac_feature | sed 's/-/_/g'`
+    eval "enable_$ac_feature=no" ;;
+
+  -enable-* | --enable-*)
+    ac_feature=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_feature" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid feature name: $ac_feature" >&2
+   { (exit 1); exit 1; }; }
+    ac_feature=`echo $ac_feature | sed 's/-/_/g'`
+    case $ac_option in
+      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "enable_$ac_feature='$ac_optarg'" ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix=$ac_optarg ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he | -h)
+    ac_init_help=long ;;
+  -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+    ac_init_help=recursive ;;
+  -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+    ac_init_help=short ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host_alias ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host_alias=$ac_optarg ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir=$ac_optarg ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir=$ac_optarg ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst \
+  | --locals | --local | --loca | --loc | --lo)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* \
+  | --locals=* | --local=* | --loca=* | --loc=* | --lo=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_package=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_package" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid package name: $ac_package" >&2
+   { (exit 1); exit 1; }; }
+    ac_package=`echo $ac_package| sed 's/-/_/g'`
+    case $ac_option in
+      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "with_$ac_package='$ac_optarg'" ;;
+
+  -without-* | --without-*)
+    ac_package=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_package" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid package name: $ac_package" >&2
+   { (exit 1); exit 1; }; }
+    ac_package=`echo $ac_package | sed 's/-/_/g'`
+    eval "with_$ac_package=no" ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries=$ac_optarg ;;
+
+  -*) { echo "$as_me: error: unrecognized option: $ac_option
+Try \`$0 --help' for more information." >&2
+   { (exit 1); exit 1; }; }
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_envvar" : ".*[^_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid variable name: $ac_envvar" >&2
+   { (exit 1); exit 1; }; }
+    ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`
+    eval "$ac_envvar='$ac_optarg'"
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : ${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  { echo "$as_me: error: missing argument to $ac_option" >&2
+   { (exit 1); exit 1; }; }
+fi
+
+# Be sure to have absolute paths.
+for ac_var in exec_prefix prefix
+do
+  eval ac_val=$`echo $ac_var`
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* | NONE | '' ) ;;
+    *)  { echo "$as_me: error: expected an absolute directory name for --$ac_var: $ac_val" >&2
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# Be sure to have absolute paths.
+for ac_var in bindir sbindir libexecdir datadir sysconfdir sharedstatedir \
+	      localstatedir libdir includedir oldincludedir infodir mandir
+do
+  eval ac_val=$`echo $ac_var`
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* ) ;;
+    *)  { echo "$as_me: error: expected an absolute directory name for --$ac_var: $ac_val" >&2
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+    echo "$as_me: WARNING: If you wanted to set the --build type, don't use --host.
+    If a cross compiler is detected then cross compile mode will be used." >&2
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then its parent.
+  ac_confdir=`(dirname "$0") 2>/dev/null ||
+$as_expr X"$0" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$0" : 'X\(//\)[^/]' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$0" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r $srcdir/$ac_unique_file; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r $srcdir/$ac_unique_file; then
+  if test "$ac_srcdir_defaulted" = yes; then
+    { echo "$as_me: error: cannot find sources ($ac_unique_file) in $ac_confdir or .." >&2
+   { (exit 1); exit 1; }; }
+  else
+    { echo "$as_me: error: cannot find sources ($ac_unique_file) in $srcdir" >&2
+   { (exit 1); exit 1; }; }
+  fi
+fi
+(cd $srcdir && test -r ./$ac_unique_file) 2>/dev/null ||
+  { echo "$as_me: error: sources are in $srcdir, but \`cd $srcdir' does not work" >&2
+   { (exit 1); exit 1; }; }
+srcdir=`echo "$srcdir" | sed 's%\([^\\/]\)[\\/]*$%\1%'`
+ac_env_build_alias_set=${build_alias+set}
+ac_env_build_alias_value=$build_alias
+ac_cv_env_build_alias_set=${build_alias+set}
+ac_cv_env_build_alias_value=$build_alias
+ac_env_host_alias_set=${host_alias+set}
+ac_env_host_alias_value=$host_alias
+ac_cv_env_host_alias_set=${host_alias+set}
+ac_cv_env_host_alias_value=$host_alias
+ac_env_target_alias_set=${target_alias+set}
+ac_env_target_alias_value=$target_alias
+ac_cv_env_target_alias_set=${target_alias+set}
+ac_cv_env_target_alias_value=$target_alias
+ac_env_CC_set=${CC+set}
+ac_env_CC_value=$CC
+ac_cv_env_CC_set=${CC+set}
+ac_cv_env_CC_value=$CC
+ac_env_CFLAGS_set=${CFLAGS+set}
+ac_env_CFLAGS_value=$CFLAGS
+ac_cv_env_CFLAGS_set=${CFLAGS+set}
+ac_cv_env_CFLAGS_value=$CFLAGS
+ac_env_LDFLAGS_set=${LDFLAGS+set}
+ac_env_LDFLAGS_value=$LDFLAGS
+ac_cv_env_LDFLAGS_set=${LDFLAGS+set}
+ac_cv_env_LDFLAGS_value=$LDFLAGS
+ac_env_CPPFLAGS_set=${CPPFLAGS+set}
+ac_env_CPPFLAGS_value=$CPPFLAGS
+ac_cv_env_CPPFLAGS_set=${CPPFLAGS+set}
+ac_cv_env_CPPFLAGS_value=$CPPFLAGS
+ac_env_CPP_set=${CPP+set}
+ac_env_CPP_value=$CPP
+ac_cv_env_CPP_set=${CPP+set}
+ac_cv_env_CPP_value=$CPP
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures this package to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+_ACEOF
+
+  cat <<_ACEOF
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+			  [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+			  [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR           user executables [EPREFIX/bin]
+  --sbindir=DIR          system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR       program executables [EPREFIX/libexec]
+  --datadir=DIR          read-only architecture-independent data [PREFIX/share]
+  --sysconfdir=DIR       read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR   modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR    modifiable single-machine data [PREFIX/var]
+  --libdir=DIR           object code libraries [EPREFIX/lib]
+  --includedir=DIR       C header files [PREFIX/include]
+  --oldincludedir=DIR    C header files for non-gcc [/usr/include]
+  --infodir=DIR          info documentation [PREFIX/info]
+  --mandir=DIR           man documentation [PREFIX/man]
+_ACEOF
+
+  cat <<\_ACEOF
+
+System types:
+  --build=BUILD     configure for building on BUILD [guessed]
+  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+
+  cat <<\_ACEOF
+
+Optional Features:
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --enable-kernel-linux   build library to run in Linux kernel context
+  --disable-debug         do not compile in dynamic debugging system
+  --enable-generic-aesicm compile in changes for ISMAcryp
+  --enable-syslog         use syslog for error reporting
+  --disable-stdout        don't use stdout for error reporting
+  --enable-console        use /dev/console for error reporting
+  --enable-gdoi           enable GDOI key management
+
+Some influential environment variables:
+  CC          C compiler command
+  CFLAGS      C compiler flags
+  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
+              nonstandard directory <lib dir>
+  CPPFLAGS    C/C++ preprocessor flags, e.g. -I<include dir> if you have
+              headers in a nonstandard directory <include dir>
+  CPP         C preprocessor
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+_ACEOF
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  ac_popdir=`pwd`
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d $ac_dir || continue
+    ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+
+# Do not use `cd foo && pwd` to compute absolute paths, because
+# the directories may not exist.
+case `pwd` in
+.) ac_abs_builddir="$ac_dir";;
+*)
+  case "$ac_dir" in
+  .) ac_abs_builddir=`pwd`;;
+  [\\/]* | ?:[\\/]* ) ac_abs_builddir="$ac_dir";;
+  *) ac_abs_builddir=`pwd`/"$ac_dir";;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_builddir=${ac_top_builddir}.;;
+*)
+  case ${ac_top_builddir}. in
+  .) ac_abs_top_builddir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_builddir=${ac_top_builddir}.;;
+  *) ac_abs_top_builddir=$ac_abs_builddir/${ac_top_builddir}.;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_srcdir=$ac_srcdir;;
+*)
+  case $ac_srcdir in
+  .) ac_abs_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_srcdir=$ac_srcdir;;
+  *) ac_abs_srcdir=$ac_abs_builddir/$ac_srcdir;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_srcdir=$ac_top_srcdir;;
+*)
+  case $ac_top_srcdir in
+  .) ac_abs_top_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_srcdir=$ac_top_srcdir;;
+  *) ac_abs_top_srcdir=$ac_abs_builddir/$ac_top_srcdir;;
+  esac;;
+esac
+
+    cd $ac_dir
+    # Check for guested configure; otherwise get Cygnus style configure.
+    if test -f $ac_srcdir/configure.gnu; then
+      echo
+      $SHELL $ac_srcdir/configure.gnu  --help=recursive
+    elif test -f $ac_srcdir/configure; then
+      echo
+      $SHELL $ac_srcdir/configure  --help=recursive
+    elif test -f $ac_srcdir/configure.ac ||
+	   test -f $ac_srcdir/configure.in; then
+      echo
+      $ac_configure --help
+    else
+      echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi
+    cd $ac_popdir
+  done
+fi
+
+test -n "$ac_init_help" && exit 0
+if $ac_init_version; then
+  cat <<\_ACEOF
+
+Copyright (C) 2003 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit 0
+fi
+exec 5>config.log
+cat >&5 <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by $as_me, which was
+generated by GNU Autoconf 2.59.  Invocation command line was
+
+  $ $0 $@
+
+_ACEOF
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+hostinfo               = `(hostinfo) 2>/dev/null               || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  echo "PATH: $as_dir"
+done
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_sep=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
+      ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) ac_configure_args0="$ac_configure_args0 '$ac_arg'" ;;
+    2)
+      ac_configure_args1="$ac_configure_args1 '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+	ac_must_keep_next=false # Got value, back to normal.
+      else
+	case $ac_arg in
+	  *=* | --config-cache | -C | -disable-* | --disable-* \
+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+	  | -with-* | --with-* | -without-* | --without-* | --x)
+	    case "$ac_configure_args0 " in
+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+	    esac
+	    ;;
+	  -* ) ac_must_keep_next=true ;;
+	esac
+      fi
+      ac_configure_args="$ac_configure_args$ac_sep'$ac_arg'"
+      # Get rid of the leading space.
+      ac_sep=" "
+      ;;
+    esac
+  done
+done
+$as_unset ac_configure_args0 || test "${ac_configure_args0+set}" != set || { ac_configure_args0=; export ac_configure_args0; }
+$as_unset ac_configure_args1 || test "${ac_configure_args1+set}" != set || { ac_configure_args1=; export ac_configure_args1; }
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Be sure not to use single quotes in there, as some shells,
+# such as our DU 5.0 friend, will then `close' the trap.
+trap 'exit_status=$?
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    cat <<\_ASBOX
+## ---------------- ##
+## Cache variables. ##
+## ---------------- ##
+_ASBOX
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+{
+  (set) 2>&1 |
+    case `(ac_space='"'"' '"'"'; set | grep ac_space) 2>&1` in
+    *ac_space=\ *)
+      sed -n \
+	"s/'"'"'/'"'"'\\\\'"'"''"'"'/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='"'"'\\2'"'"'/p"
+      ;;
+    *)
+      sed -n \
+	"s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1=\\2/p"
+      ;;
+    esac;
+}
+    echo
+
+    cat <<\_ASBOX
+## ----------------- ##
+## Output variables. ##
+## ----------------- ##
+_ASBOX
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=$`echo $ac_var`
+      echo "$ac_var='"'"'$ac_val'"'"'"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      cat <<\_ASBOX
+## ------------- ##
+## Output files. ##
+## ------------- ##
+_ASBOX
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=$`echo $ac_var`
+	echo "$ac_var='"'"'$ac_val'"'"'"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      cat <<\_ASBOX
+## ----------- ##
+## confdefs.h. ##
+## ----------- ##
+_ASBOX
+      echo
+      sed "/^$/d" confdefs.h | sort
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      echo "$as_me: caught signal $ac_signal"
+    echo "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core &&
+  rm -rf conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+     ' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; { (exit 1); exit 1; }' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -rf conftest* confdefs.h
+# AIX cpp loses on an empty file, so make sure it contains at least a newline.
+echo >confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer explicitly selected file to automatically selected ones.
+if test -z "$CONFIG_SITE"; then
+  if test "x$prefix" != xNONE; then
+    CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
+  else
+    CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
+  fi
+fi
+for ac_site_file in $CONFIG_SITE; do
+  if test -r "$ac_site_file"; then
+    { echo "$as_me:$LINENO: loading site script $ac_site_file" >&5
+echo "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file"
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special
+  # files actually), so we avoid doing that.
+  if test -f "$cache_file"; then
+    { echo "$as_me:$LINENO: loading cache $cache_file" >&5
+echo "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . $cache_file;;
+      *)                      . ./$cache_file;;
+    esac
+  fi
+else
+  { echo "$as_me:$LINENO: creating cache $cache_file" >&5
+echo "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in `(set) 2>&1 |
+	       sed -n 's/^ac_env_\([a-zA-Z_0-9]*\)_set=.*/\1/p'`; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val="\$ac_cv_env_${ac_var}_value"
+  eval ac_new_val="\$ac_env_${ac_var}_value"
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { echo "$as_me:$LINENO: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { echo "$as_me:$LINENO: error: \`$ac_var' was not set in the previous run" >&5
+echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	{ echo "$as_me:$LINENO: error: \`$ac_var' has changed since the previous run:" >&5
+echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	{ echo "$as_me:$LINENO:   former value:  $ac_old_val" >&5
+echo "$as_me:   former value:  $ac_old_val" >&2;}
+	{ echo "$as_me:$LINENO:   current value: $ac_new_val" >&5
+echo "$as_me:   current value: $ac_new_val" >&2;}
+	ac_cache_corrupted=:
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
+      ac_arg=$ac_var=`echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) ac_configure_args="$ac_configure_args '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { echo "$as_me:$LINENO: error: changes in the environment can compromise the build" >&5
+echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+  { { echo "$as_me:$LINENO: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&5
+echo "$as_me: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+if test -z "$CFLAGS"; then
+      CFLAGS="-Wall -O4 -fexpensive-optimizations -funroll-loops"
+fi
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_RANLIB+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+  echo "$as_me:$LINENO: result: $RANLIB" >&5
+echo "${ECHO_T}$RANLIB" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+  ac_ct_RANLIB=$RANLIB
+  # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_RANLIB+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_RANLIB"; then
+  ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_RANLIB="ranlib"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+  test -z "$ac_cv_prog_ac_ct_RANLIB" && ac_cv_prog_ac_ct_RANLIB=":"
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+  echo "$as_me:$LINENO: result: $ac_ct_RANLIB" >&5
+echo "${ECHO_T}$ac_ct_RANLIB" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  RANLIB=$ac_ct_RANLIB
+else
+  RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  CC=$ac_ct_CC
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  CC=$ac_ct_CC
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  test -n "$ac_ct_CC" && break
+done
+
+  CC=$ac_ct_CC
+fi
+
+fi
+
+
+test -z "$CC" && { { echo "$as_me:$LINENO: error: no acceptable C compiler found in \$PATH
+See \`config.log' for more details." >&5
+echo "$as_me: error: no acceptable C compiler found in \$PATH
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+
+# Provide some information about the compiler.
+echo "$as_me:$LINENO:" \
+     "checking for C compiler version" >&5
+ac_compiler=`set X $ac_compile; echo $2`
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler --version </dev/null >&5\"") >&5
+  (eval $ac_compiler --version </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler -v </dev/null >&5\"") >&5
+  (eval $ac_compiler -v </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler -V </dev/null >&5\"") >&5
+  (eval $ac_compiler -V </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+echo "$as_me:$LINENO: checking for C compiler default output file name" >&5
+echo $ECHO_N "checking for C compiler default output file name... $ECHO_C" >&6
+ac_link_default=`echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+if { (eval echo "$as_me:$LINENO: \"$ac_link_default\"") >&5
+  (eval $ac_link_default) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  # Find the output, starting from the most likely.  This scheme is
+# not robust to junk in `.', hence go to wildcards (a.*) only as a last
+# resort.
+
+# Be careful to initialize this variable, since it used to be cached.
+# Otherwise an old cache value of `no' led to `EXEEXT = no' in a Makefile.
+ac_cv_exeext=
+# b.out is created by i960 compilers.
+for ac_file in a_out.exe a.exe conftest.exe a.out conftest a.* conftest.* b.out
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.o | *.obj )
+	;;
+    conftest.$ac_ext )
+	# This is the source file.
+	;;
+    [ab].out )
+	# We found the default executable, but exeext='' is most
+	# certainly right.
+	break;;
+    *.* )
+	ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	# FIXME: I believe we export ac_cv_exeext for Libtool,
+	# but it would be cool to find out if it's true.  Does anybody
+	# maintain Libtool? --akim.
+	export ac_cv_exeext
+	break;;
+    * )
+	break;;
+  esac
+done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { echo "$as_me:$LINENO: error: C compiler cannot create executables
+See \`config.log' for more details." >&5
+echo "$as_me: error: C compiler cannot create executables
+See \`config.log' for more details." >&2;}
+   { (exit 77); exit 77; }; }
+fi
+
+ac_exeext=$ac_cv_exeext
+echo "$as_me:$LINENO: result: $ac_file" >&5
+echo "${ECHO_T}$ac_file" >&6
+
+# Check the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+echo "$as_me:$LINENO: checking whether the C compiler works" >&5
+echo $ECHO_N "checking whether the C compiler works... $ECHO_C" >&6
+# FIXME: These cross compiler hacks should be removed for Autoconf 3.0
+# If not cross compiling, check that we can run a simple program.
+if test "$cross_compiling" != yes; then
+  if { ac_try='./$ac_file'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { echo "$as_me:$LINENO: error: cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+    fi
+  fi
+fi
+echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+
+rm -f a.out a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+# Check the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+echo "$as_me:$LINENO: checking whether we are cross compiling" >&5
+echo $ECHO_N "checking whether we are cross compiling... $ECHO_C" >&6
+echo "$as_me:$LINENO: result: $cross_compiling" >&5
+echo "${ECHO_T}$cross_compiling" >&6
+
+echo "$as_me:$LINENO: checking for suffix of executables" >&5
+echo $ECHO_N "checking for suffix of executables... $ECHO_C" >&6
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	  export ac_cv_exeext
+	  break;;
+    * ) break;;
+  esac
+done
+else
+  { { echo "$as_me:$LINENO: error: cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+rm -f conftest$ac_cv_exeext
+echo "$as_me:$LINENO: result: $ac_cv_exeext" >&5
+echo "${ECHO_T}$ac_cv_exeext" >&6
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+echo "$as_me:$LINENO: checking for suffix of object files" >&5
+echo $ECHO_N "checking for suffix of object files... $ECHO_C" >&6
+if test "${ac_cv_objext+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  for ac_file in `(ls conftest.o conftest.obj; ls conftest.*) 2>/dev/null`; do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { echo "$as_me:$LINENO: error: cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_objext" >&5
+echo "${ECHO_T}$ac_cv_objext" >&6
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+echo "$as_me:$LINENO: checking whether we are using the GNU C compiler" >&5
+echo $ECHO_N "checking whether we are using the GNU C compiler... $ECHO_C" >&6
+if test "${ac_cv_c_compiler_gnu+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_compiler_gnu=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_compiler_gnu=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_compiler_gnu" >&5
+echo "${ECHO_T}$ac_cv_c_compiler_gnu" >&6
+GCC=`test $ac_compiler_gnu = yes && echo yes`
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+CFLAGS="-g"
+echo "$as_me:$LINENO: checking whether $CC accepts -g" >&5
+echo $ECHO_N "checking whether $CC accepts -g... $ECHO_C" >&6
+if test "${ac_cv_prog_cc_g+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_prog_cc_g=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_prog_cc_g=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_prog_cc_g" >&5
+echo "${ECHO_T}$ac_cv_prog_cc_g" >&6
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+echo "$as_me:$LINENO: checking for $CC option to accept ANSI C" >&5
+echo $ECHO_N "checking for $CC option to accept ANSI C... $ECHO_C" >&6
+if test "${ac_cv_prog_cc_stdc+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_prog_cc_stdc=no
+ac_save_CC=$CC
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std1 is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std1.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+# Don't try gcc -ansi; that turns off useful extensions and
+# breaks some systems' header files.
+# AIX			-qlanglvl=ansi
+# Ultrix and OSF/1	-std1
+# HP-UX 10.20 and later	-Ae
+# HP-UX older versions	-Aa -D_HPUX_SOURCE
+# SVR4			-Xc -D__EXTENSIONS__
+for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_prog_cc_stdc=$ac_arg
+break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext
+done
+rm -f conftest.$ac_ext conftest.$ac_objext
+CC=$ac_save_CC
+
+fi
+
+case "x$ac_cv_prog_cc_stdc" in
+  x|xno)
+    echo "$as_me:$LINENO: result: none needed" >&5
+echo "${ECHO_T}none needed" >&6 ;;
+  *)
+    echo "$as_me:$LINENO: result: $ac_cv_prog_cc_stdc" >&5
+echo "${ECHO_T}$ac_cv_prog_cc_stdc" >&6
+    CC="$CC $ac_cv_prog_cc_stdc" ;;
+esac
+
+# Some people use a C++ compiler to compile C.  Since we use `exit',
+# in C++ we need to declare it.  In case someone uses the same compiler
+# for both compiling C and C++ we need to have the C++ compiler decide
+# the declaration of exit, since it's the most demanding environment.
+cat >conftest.$ac_ext <<_ACEOF
+#ifndef __cplusplus
+  choke me
+#endif
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  for ac_declaration in \
+   '' \
+   'extern "C" void std::exit (int) throw (); using std::exit;' \
+   'extern "C" void std::exit (int); using std::exit;' \
+   'extern "C" void exit (int) throw ();' \
+   'extern "C" void exit (int);' \
+   'void exit (int);'
+do
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_declaration
+#include <stdlib.h>
+int
+main ()
+{
+exit (42);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+continue
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_declaration
+int
+main ()
+{
+exit (42);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+done
+rm -f conftest*
+if test -n "$ac_declaration"; then
+  echo '#ifdef __cplusplus' >>confdefs.h
+  echo $ac_declaration      >>confdefs.h
+  echo '#endif'             >>confdefs.h
+fi
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ac_aux_dir=
+for ac_dir in $srcdir $srcdir/.. $srcdir/../..; do
+  if test -f $ac_dir/install-sh; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install-sh -c"
+    break
+  elif test -f $ac_dir/install.sh; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install.sh -c"
+    break
+  elif test -f $ac_dir/shtool; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/shtool install -c"
+    break
+  fi
+done
+if test -z "$ac_aux_dir"; then
+  { { echo "$as_me:$LINENO: error: cannot find install-sh or install.sh in $srcdir $srcdir/.. $srcdir/../.." >&5
+echo "$as_me: error: cannot find install-sh or install.sh in $srcdir $srcdir/.. $srcdir/../.." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+ac_config_guess="$SHELL $ac_aux_dir/config.guess"
+ac_config_sub="$SHELL $ac_aux_dir/config.sub"
+ac_configure="$SHELL $ac_aux_dir/configure" # This should be Cygnus configure.
+
+# Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+echo "$as_me:$LINENO: checking for a BSD-compatible install" >&5
+echo $ECHO_N "checking for a BSD-compatible install... $ECHO_C" >&6
+if test -z "$INSTALL"; then
+if test "${ac_cv_path_install+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  # Account for people who put trailing slashes in PATH elements.
+case $as_dir/ in
+  ./ | .// | /cC/* | \
+  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+  ?:\\/os2\\/install\\/* | ?:\\/OS2\\/INSTALL\\/* | \
+  /usr/ucb/* ) ;;
+  *)
+    # OSF1 and SCO ODT 3.0 have their own names for install.
+    # Don't use installbsd from OSF since it installs stuff as root
+    # by default.
+    for ac_prog in ginstall scoinst install; do
+      for ac_exec_ext in '' $ac_executable_extensions; do
+	if $as_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then
+	  if test $ac_prog = install &&
+	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # AIX install.  It has an incompatible calling convention.
+	    :
+	  elif test $ac_prog = install &&
+	    grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # program-specific install script used by HP pwplus--don't use.
+	    :
+	  else
+	    ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
+	    break 3
+	  fi
+	fi
+      done
+    done
+    ;;
+esac
+done
+
+
+fi
+  if test "${ac_cv_path_install+set}" = set; then
+    INSTALL=$ac_cv_path_install
+  else
+    # As a last resort, use the slow shell script.  We don't cache a
+    # path for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the path is relative.
+    INSTALL=$ac_install_sh
+  fi
+fi
+echo "$as_me:$LINENO: result: $INSTALL" >&5
+echo "${ECHO_T}$INSTALL" >&6
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+
+
+echo "$as_me:$LINENO: checking whether byte ordering is bigendian" >&5
+echo $ECHO_N "checking whether byte ordering is bigendian... $ECHO_C" >&6
+if test "${ac_cv_c_bigendian+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  # See if sys/param.h defines the BYTE_ORDER macro.
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <sys/param.h>
+
+int
+main ()
+{
+#if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
+ bogus endian macros
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  # It does; now see whether it defined to BIG_ENDIAN or not.
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <sys/param.h>
+
+int
+main ()
+{
+#if BYTE_ORDER != BIG_ENDIAN
+ not big endian
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_c_bigendian=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_c_bigendian=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+# It does not; compile a test program.
+if test "$cross_compiling" = yes; then
+  # try to guess the endianness by grepping values into an object file
+  ac_cv_c_bigendian=unknown
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+short ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
+short ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
+void _ascii () { char *s = (char *) ascii_mm; s = (char *) ascii_ii; }
+short ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
+short ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
+void _ebcdic () { char *s = (char *) ebcdic_mm; s = (char *) ebcdic_ii; }
+int
+main ()
+{
+ _ascii (); _ebcdic ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  if grep BIGenDianSyS conftest.$ac_objext >/dev/null ; then
+  ac_cv_c_bigendian=yes
+fi
+if grep LiTTleEnDian conftest.$ac_objext >/dev/null ; then
+  if test "$ac_cv_c_bigendian" = unknown; then
+    ac_cv_c_bigendian=no
+  else
+    # finding both strings is unlikely to happen, but who knows?
+    ac_cv_c_bigendian=unknown
+  fi
+fi
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+int
+main ()
+{
+  /* Are we little or big endian?  From Harbison&Steele.  */
+  union
+  {
+    long l;
+    char c[sizeof (long)];
+  } u;
+  u.l = 1;
+  exit (u.c[sizeof (long) - 1] == 1);
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_c_bigendian=no
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_cv_c_bigendian=yes
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_bigendian" >&5
+echo "${ECHO_T}$ac_cv_c_bigendian" >&6
+case $ac_cv_c_bigendian in
+  yes)
+
+cat >>confdefs.h <<\_ACEOF
+#define WORDS_BIGENDIAN 1
+_ACEOF
+ ;;
+  no)
+     ;;
+  *)
+    { { echo "$as_me:$LINENO: error: unknown endianness
+presetting ac_cv_c_bigendian=no (or yes) will help" >&5
+echo "$as_me: error: unknown endianness
+presetting ac_cv_c_bigendian=no (or yes) will help" >&2;}
+   { (exit 1); exit 1; }; } ;;
+esac
+
+
+# Make sure we can run config.sub.
+$ac_config_sub sun4 >/dev/null 2>&1 ||
+  { { echo "$as_me:$LINENO: error: cannot run $ac_config_sub" >&5
+echo "$as_me: error: cannot run $ac_config_sub" >&2;}
+   { (exit 1); exit 1; }; }
+
+echo "$as_me:$LINENO: checking build system type" >&5
+echo $ECHO_N "checking build system type... $ECHO_C" >&6
+if test "${ac_cv_build+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_build_alias=$build_alias
+test -z "$ac_cv_build_alias" &&
+  ac_cv_build_alias=`$ac_config_guess`
+test -z "$ac_cv_build_alias" &&
+  { { echo "$as_me:$LINENO: error: cannot guess build type; you must specify one" >&5
+echo "$as_me: error: cannot guess build type; you must specify one" >&2;}
+   { (exit 1); exit 1; }; }
+ac_cv_build=`$ac_config_sub $ac_cv_build_alias` ||
+  { { echo "$as_me:$LINENO: error: $ac_config_sub $ac_cv_build_alias failed" >&5
+echo "$as_me: error: $ac_config_sub $ac_cv_build_alias failed" >&2;}
+   { (exit 1); exit 1; }; }
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_build" >&5
+echo "${ECHO_T}$ac_cv_build" >&6
+build=$ac_cv_build
+build_cpu=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+build_vendor=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+build_os=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+
+echo "$as_me:$LINENO: checking host system type" >&5
+echo $ECHO_N "checking host system type... $ECHO_C" >&6
+if test "${ac_cv_host+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_host_alias=$host_alias
+test -z "$ac_cv_host_alias" &&
+  ac_cv_host_alias=$ac_cv_build_alias
+ac_cv_host=`$ac_config_sub $ac_cv_host_alias` ||
+  { { echo "$as_me:$LINENO: error: $ac_config_sub $ac_cv_host_alias failed" >&5
+echo "$as_me: error: $ac_config_sub $ac_cv_host_alias failed" >&2;}
+   { (exit 1); exit 1; }; }
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_host" >&5
+echo "${ECHO_T}$ac_cv_host" >&6
+host=$ac_cv_host
+host_cpu=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+host_vendor=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+host_os=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+
+
+case $host_cpu in
+     i*86 )
+
+cat >>confdefs.h <<\_ACEOF
+#define CPU_CISC 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_X86 1
+_ACEOF
+;;
+	* )
+	# CPU_RISC is only supported for big endian machines.
+	if test "$ac_cv_c_bigendian" = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define CPU_RISC 1
+_ACEOF
+
+	else
+	   cat >>confdefs.h <<\_ACEOF
+#define CPU_CISC 1
+_ACEOF
+
+	fi
+	;;
+esac
+
+case $host_os in
+    *cygwin*|*mingw* )
+	EXE=.exe
+	HOST_IS_WINDOWS=yes
+	;;
+    * )
+	EXE=""
+	;;
+esac
+   # define executable suffix; this is needed for `make clean'
+
+
+# Check whether --enable-kernel-linux or --disable-kernel-linux was given.
+if test "${enable_kernel_linux+set}" = set; then
+  enableval="$enable_kernel_linux"
+
+else
+  enable_kernel_linux=no
+fi;
+echo "$as_me:$LINENO: checking whether to build for Linux kernel context" >&5
+echo $ECHO_N "checking whether to build for Linux kernel context... $ECHO_C" >&6
+if test "$enable_kernel_linux" = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define SRTP_KERNEL 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define SRTP_KERNEL_LINUX 1
+_ACEOF
+
+fi
+echo "$as_me:$LINENO: result: $enable_kernel_linux" >&5
+echo "${ECHO_T}$enable_kernel_linux" >&6
+
+if test "$cross_compiling" != yes -a "$HOST_IS_WINDOWS" != yes; then
+      echo "$as_me:$LINENO: checking for /dev/urandom" >&5
+echo $ECHO_N "checking for /dev/urandom... $ECHO_C" >&6
+if test "${ac_cv_file__dev_urandom+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  test "$cross_compiling" = yes &&
+  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
+echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
+   { (exit 1); exit 1; }; }
+if test -r "/dev/urandom"; then
+  ac_cv_file__dev_urandom=yes
+else
+  ac_cv_file__dev_urandom=no
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_file__dev_urandom" >&5
+echo "${ECHO_T}$ac_cv_file__dev_urandom" >&6
+if test $ac_cv_file__dev_urandom = yes; then
+  DEV_URANDOM=/dev/urandom
+else
+  echo "$as_me:$LINENO: checking for /dev/random" >&5
+echo $ECHO_N "checking for /dev/random... $ECHO_C" >&6
+if test "${ac_cv_file__dev_random+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  test "$cross_compiling" = yes &&
+  { { echo "$as_me:$LINENO: error: cannot check for file existence when cross compiling" >&5
+echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
+   { (exit 1); exit 1; }; }
+if test -r "/dev/random"; then
+  ac_cv_file__dev_random=yes
+else
+  ac_cv_file__dev_random=no
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_file__dev_random" >&5
+echo "${ECHO_T}$ac_cv_file__dev_random" >&6
+if test $ac_cv_file__dev_random = yes; then
+  DEV_URANDOM=/dev/random
+fi
+
+fi
+
+fi
+
+echo "$as_me:$LINENO: checking which random device to use" >&5
+echo $ECHO_N "checking which random device to use... $ECHO_C" >&6
+if test "$enable_kernel_linux" = "yes"; then
+   RNG_OBJS=rand_linux_kernel.o
+   echo "$as_me:$LINENO: result: Linux kernel builtin" >&5
+echo "${ECHO_T}Linux kernel builtin" >&6
+else
+   RNG_OBJS=rand_source.o
+   if test -n "$DEV_URANDOM"; then
+
+cat >>confdefs.h <<_ACEOF
+#define DEV_URANDOM "$DEV_URANDOM"
+_ACEOF
+
+      echo "$as_me:$LINENO: result: $DEV_URANDOM" >&5
+echo "${ECHO_T}$DEV_URANDOM" >&6
+   else
+      echo "$as_me:$LINENO: result: standard rand() function..." >&5
+echo "${ECHO_T}standard rand() function..." >&6
+   fi
+fi
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+echo "$as_me:$LINENO: checking how to run the C preprocessor" >&5
+echo $ECHO_N "checking how to run the C preprocessor... $ECHO_C" >&6
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+  if test "${ac_cv_prog_CPP+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+      # Double quotes because CPP needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether non-existent headers
+  # can be detected and how.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  # Broken: success on invalid input.
+continue
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then
+  break
+fi
+
+    done
+    ac_cv_prog_CPP=$CPP
+
+fi
+  CPP=$ac_cv_prog_CPP
+else
+  ac_cv_prog_CPP=$CPP
+fi
+echo "$as_me:$LINENO: result: $CPP" >&5
+echo "${ECHO_T}$CPP" >&6
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether non-existent headers
+  # can be detected and how.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  # Broken: success on invalid input.
+continue
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then
+  :
+else
+  { { echo "$as_me:$LINENO: error: C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." >&5
+echo "$as_me: error: C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+echo "$as_me:$LINENO: checking for egrep" >&5
+echo $ECHO_N "checking for egrep... $ECHO_C" >&6
+if test "${ac_cv_prog_egrep+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if echo a | (grep -E '(a|b)') >/dev/null 2>&1
+    then ac_cv_prog_egrep='grep -E'
+    else ac_cv_prog_egrep='egrep'
+    fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_prog_egrep" >&5
+echo "${ECHO_T}$ac_cv_prog_egrep" >&6
+ EGREP=$ac_cv_prog_egrep
+
+
+echo "$as_me:$LINENO: checking for ANSI C header files" >&5
+echo $ECHO_N "checking for ANSI C header files... $ECHO_C" >&6
+if test "${ac_cv_header_stdc+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_header_stdc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_header_stdc=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "memchr" >/dev/null 2>&1; then
+  :
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "free" >/dev/null 2>&1; then
+  :
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+  if test "$cross_compiling" = yes; then
+  :
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ctype.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+		   (('a' <= (c) && (c) <= 'i') \
+		     || ('j' <= (c) && (c) <= 'r') \
+		     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+	|| toupper (i) != TOUPPER (i))
+      exit(2);
+  exit (0);
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_cv_header_stdc=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_stdc" >&5
+echo "${ECHO_T}$ac_cv_header_stdc" >&6
+if test $ac_cv_header_stdc = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define STDC_HEADERS 1
+_ACEOF
+
+fi
+
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+
+
+
+
+
+
+
+
+
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+		  inttypes.h stdint.h unistd.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_Header=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_Header=no"
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+
+for ac_header in stdlib.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in unistd.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in byteswap.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in stdint.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in sys/uio.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in inttypes.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in sys/types.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in machine/types.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in sys/int_types.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+
+
+
+for ac_header in sys/socket.h netinet/in.h arpa/inet.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in windows.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+for ac_header in winsock2.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+fi
+
+done
+
+
+
+for ac_header in syslog.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+echo "$as_me:$LINENO: checking for int8_t" >&5
+echo $ECHO_N "checking for int8_t... $ECHO_C" >&6
+if test "${ac_cv_type_int8_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((int8_t *) 0)
+  return 0;
+if (sizeof (int8_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_int8_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_int8_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_int8_t" >&5
+echo "${ECHO_T}$ac_cv_type_int8_t" >&6
+if test $ac_cv_type_int8_t = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_INT8_T 1
+_ACEOF
+
+
+fi
+echo "$as_me:$LINENO: checking for uint8_t" >&5
+echo $ECHO_N "checking for uint8_t... $ECHO_C" >&6
+if test "${ac_cv_type_uint8_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((uint8_t *) 0)
+  return 0;
+if (sizeof (uint8_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_uint8_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_uint8_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_uint8_t" >&5
+echo "${ECHO_T}$ac_cv_type_uint8_t" >&6
+if test $ac_cv_type_uint8_t = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_UINT8_T 1
+_ACEOF
+
+
+fi
+echo "$as_me:$LINENO: checking for int16_t" >&5
+echo $ECHO_N "checking for int16_t... $ECHO_C" >&6
+if test "${ac_cv_type_int16_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((int16_t *) 0)
+  return 0;
+if (sizeof (int16_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_int16_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_int16_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_int16_t" >&5
+echo "${ECHO_T}$ac_cv_type_int16_t" >&6
+if test $ac_cv_type_int16_t = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_INT16_T 1
+_ACEOF
+
+
+fi
+echo "$as_me:$LINENO: checking for uint16_t" >&5
+echo $ECHO_N "checking for uint16_t... $ECHO_C" >&6
+if test "${ac_cv_type_uint16_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((uint16_t *) 0)
+  return 0;
+if (sizeof (uint16_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_uint16_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_uint16_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_uint16_t" >&5
+echo "${ECHO_T}$ac_cv_type_uint16_t" >&6
+if test $ac_cv_type_uint16_t = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_UINT16_T 1
+_ACEOF
+
+
+fi
+echo "$as_me:$LINENO: checking for int32_t" >&5
+echo $ECHO_N "checking for int32_t... $ECHO_C" >&6
+if test "${ac_cv_type_int32_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((int32_t *) 0)
+  return 0;
+if (sizeof (int32_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_int32_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_int32_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_int32_t" >&5
+echo "${ECHO_T}$ac_cv_type_int32_t" >&6
+if test $ac_cv_type_int32_t = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_INT32_T 1
+_ACEOF
+
+
+fi
+echo "$as_me:$LINENO: checking for uint32_t" >&5
+echo $ECHO_N "checking for uint32_t... $ECHO_C" >&6
+if test "${ac_cv_type_uint32_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((uint32_t *) 0)
+  return 0;
+if (sizeof (uint32_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_uint32_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_uint32_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_uint32_t" >&5
+echo "${ECHO_T}$ac_cv_type_uint32_t" >&6
+if test $ac_cv_type_uint32_t = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_UINT32_T 1
+_ACEOF
+
+
+fi
+echo "$as_me:$LINENO: checking for uint64_t" >&5
+echo $ECHO_N "checking for uint64_t... $ECHO_C" >&6
+if test "${ac_cv_type_uint64_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((uint64_t *) 0)
+  return 0;
+if (sizeof (uint64_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_uint64_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_uint64_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_uint64_t" >&5
+echo "${ECHO_T}$ac_cv_type_uint64_t" >&6
+if test $ac_cv_type_uint64_t = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_UINT64_T 1
+_ACEOF
+
+
+fi
+
+echo "$as_me:$LINENO: checking for unsigned long" >&5
+echo $ECHO_N "checking for unsigned long... $ECHO_C" >&6
+if test "${ac_cv_type_unsigned_long+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((unsigned long *) 0)
+  return 0;
+if (sizeof (unsigned long))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_unsigned_long=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_unsigned_long=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_unsigned_long" >&5
+echo "${ECHO_T}$ac_cv_type_unsigned_long" >&6
+
+echo "$as_me:$LINENO: checking size of unsigned long" >&5
+echo $ECHO_N "checking size of unsigned long... $ECHO_C" >&6
+if test "${ac_cv_sizeof_unsigned_long+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test "$ac_cv_type_unsigned_long" = yes; then
+  # The cast to unsigned long works around a bug in the HP C Compiler
+  # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+  # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+  # This bug is HP SR number 8606223364.
+  if test "$cross_compiling" = yes; then
+  # Depending upon the size, compute the lo and hi bounds.
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(((long) (sizeof (unsigned long))) >= 0)];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_lo=0 ac_mid=0
+  while :; do
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(((long) (sizeof (unsigned long))) <= $ac_mid)];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_hi=$ac_mid; break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_lo=`expr $ac_mid + 1`
+		    if test $ac_lo -le $ac_mid; then
+		      ac_lo= ac_hi=
+		      break
+		    fi
+		    ac_mid=`expr 2 '*' $ac_mid + 1`
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(((long) (sizeof (unsigned long))) < 0)];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_hi=-1 ac_mid=-1
+  while :; do
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(((long) (sizeof (unsigned long))) >= $ac_mid)];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_lo=$ac_mid; break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_hi=`expr '(' $ac_mid ')' - 1`
+		       if test $ac_mid -le $ac_hi; then
+			 ac_lo= ac_hi=
+			 break
+		       fi
+		       ac_mid=`expr 2 '*' $ac_mid`
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_lo= ac_hi=
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+# Binary search between lo and hi bounds.
+while test "x$ac_lo" != "x$ac_hi"; do
+  ac_mid=`expr '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo`
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(((long) (sizeof (unsigned long))) <= $ac_mid)];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_hi=$ac_mid
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_lo=`expr '(' $ac_mid ')' + 1`
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+done
+case $ac_lo in
+?*) ac_cv_sizeof_unsigned_long=$ac_lo;;
+'') { { echo "$as_me:$LINENO: error: cannot compute sizeof (unsigned long), 77
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute sizeof (unsigned long), 77
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; } ;;
+esac
+else
+  if test "$cross_compiling" = yes; then
+  { { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+long longval () { return (long) (sizeof (unsigned long)); }
+unsigned long ulongval () { return (long) (sizeof (unsigned long)); }
+#include <stdio.h>
+#include <stdlib.h>
+int
+main ()
+{
+
+  FILE *f = fopen ("conftest.val", "w");
+  if (! f)
+    exit (1);
+  if (((long) (sizeof (unsigned long))) < 0)
+    {
+      long i = longval ();
+      if (i != ((long) (sizeof (unsigned long))))
+	exit (1);
+      fprintf (f, "%ld\n", i);
+    }
+  else
+    {
+      unsigned long i = ulongval ();
+      if (i != ((long) (sizeof (unsigned long))))
+	exit (1);
+      fprintf (f, "%lu\n", i);
+    }
+  exit (ferror (f) || fclose (f) != 0);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_sizeof_unsigned_long=`cat conftest.val`
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+{ { echo "$as_me:$LINENO: error: cannot compute sizeof (unsigned long), 77
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute sizeof (unsigned long), 77
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+rm -f conftest.val
+else
+  ac_cv_sizeof_unsigned_long=0
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_sizeof_unsigned_long" >&5
+echo "${ECHO_T}$ac_cv_sizeof_unsigned_long" >&6
+cat >>confdefs.h <<_ACEOF
+#define SIZEOF_UNSIGNED_LONG $ac_cv_sizeof_unsigned_long
+_ACEOF
+
+
+echo "$as_me:$LINENO: checking for unsigned long long" >&5
+echo $ECHO_N "checking for unsigned long long... $ECHO_C" >&6
+if test "${ac_cv_type_unsigned_long_long+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((unsigned long long *) 0)
+  return 0;
+if (sizeof (unsigned long long))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_unsigned_long_long=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_unsigned_long_long=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_unsigned_long_long" >&5
+echo "${ECHO_T}$ac_cv_type_unsigned_long_long" >&6
+
+echo "$as_me:$LINENO: checking size of unsigned long long" >&5
+echo $ECHO_N "checking size of unsigned long long... $ECHO_C" >&6
+if test "${ac_cv_sizeof_unsigned_long_long+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test "$ac_cv_type_unsigned_long_long" = yes; then
+  # The cast to unsigned long works around a bug in the HP C Compiler
+  # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+  # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+  # This bug is HP SR number 8606223364.
+  if test "$cross_compiling" = yes; then
+  # Depending upon the size, compute the lo and hi bounds.
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(((long) (sizeof (unsigned long long))) >= 0)];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_lo=0 ac_mid=0
+  while :; do
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(((long) (sizeof (unsigned long long))) <= $ac_mid)];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_hi=$ac_mid; break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_lo=`expr $ac_mid + 1`
+		    if test $ac_lo -le $ac_mid; then
+		      ac_lo= ac_hi=
+		      break
+		    fi
+		    ac_mid=`expr 2 '*' $ac_mid + 1`
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(((long) (sizeof (unsigned long long))) < 0)];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_hi=-1 ac_mid=-1
+  while :; do
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(((long) (sizeof (unsigned long long))) >= $ac_mid)];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_lo=$ac_mid; break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_hi=`expr '(' $ac_mid ')' - 1`
+		       if test $ac_mid -le $ac_hi; then
+			 ac_lo= ac_hi=
+			 break
+		       fi
+		       ac_mid=`expr 2 '*' $ac_mid`
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_lo= ac_hi=
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+# Binary search between lo and hi bounds.
+while test "x$ac_lo" != "x$ac_hi"; do
+  ac_mid=`expr '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo`
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(((long) (sizeof (unsigned long long))) <= $ac_mid)];
+test_array [0] = 0
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_hi=$ac_mid
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_lo=`expr '(' $ac_mid ')' + 1`
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+done
+case $ac_lo in
+?*) ac_cv_sizeof_unsigned_long_long=$ac_lo;;
+'') { { echo "$as_me:$LINENO: error: cannot compute sizeof (unsigned long long), 77
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute sizeof (unsigned long long), 77
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; } ;;
+esac
+else
+  if test "$cross_compiling" = yes; then
+  { { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+long longval () { return (long) (sizeof (unsigned long long)); }
+unsigned long ulongval () { return (long) (sizeof (unsigned long long)); }
+#include <stdio.h>
+#include <stdlib.h>
+int
+main ()
+{
+
+  FILE *f = fopen ("conftest.val", "w");
+  if (! f)
+    exit (1);
+  if (((long) (sizeof (unsigned long long))) < 0)
+    {
+      long i = longval ();
+      if (i != ((long) (sizeof (unsigned long long))))
+	exit (1);
+      fprintf (f, "%ld\n", i);
+    }
+  else
+    {
+      unsigned long i = ulongval ();
+      if (i != ((long) (sizeof (unsigned long long))))
+	exit (1);
+      fprintf (f, "%lu\n", i);
+    }
+  exit (ferror (f) || fclose (f) != 0);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_sizeof_unsigned_long_long=`cat conftest.val`
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+{ { echo "$as_me:$LINENO: error: cannot compute sizeof (unsigned long long), 77
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute sizeof (unsigned long long), 77
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+rm -f conftest.val
+else
+  ac_cv_sizeof_unsigned_long_long=0
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_sizeof_unsigned_long_long" >&5
+echo "${ECHO_T}$ac_cv_sizeof_unsigned_long_long" >&6
+cat >>confdefs.h <<_ACEOF
+#define SIZEOF_UNSIGNED_LONG_LONG $ac_cv_sizeof_unsigned_long_long
+_ACEOF
+
+
+
+echo "$as_me:$LINENO: checking for an ANSI C-conforming const" >&5
+echo $ECHO_N "checking for an ANSI C-conforming const... $ECHO_C" >&6
+if test "${ac_cv_c_const+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+/* FIXME: Include the comments suggested by Paul. */
+#ifndef __cplusplus
+  /* Ultrix mips cc rejects this.  */
+  typedef int charset[2];
+  const charset x;
+  /* SunOS 4.1.1 cc rejects this.  */
+  char const *const *ccp;
+  char **p;
+  /* NEC SVR4.0.2 mips cc rejects this.  */
+  struct point {int x, y;};
+  static struct point const zero = {0,0};
+  /* AIX XL C 1.02.0.0 rejects this.
+     It does not let you subtract one const X* pointer from another in
+     an arm of an if-expression whose if-part is not a constant
+     expression */
+  const char *g = "string";
+  ccp = &g + (g ? g-g : 0);
+  /* HPUX 7.0 cc rejects these. */
+  ++ccp;
+  p = (char**) ccp;
+  ccp = (char const *const *) p;
+  { /* SCO 3.2v4 cc rejects this.  */
+    char *t;
+    char const *s = 0 ? (char *) 0 : (char const *) 0;
+
+    *t++ = 0;
+  }
+  { /* Someone thinks the Sun supposedly-ANSI compiler will reject this.  */
+    int x[] = {25, 17};
+    const int *foo = &x[0];
+    ++foo;
+  }
+  { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */
+    typedef const int *iptr;
+    iptr p = 0;
+    ++p;
+  }
+  { /* AIX XL C 1.02.0.0 rejects this saying
+       "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
+    struct s { int j; const int *ap[3]; };
+    struct s *b; b->j = 5;
+  }
+  { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
+    const int foo = 10;
+  }
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_c_const=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_c_const=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_const" >&5
+echo "${ECHO_T}$ac_cv_c_const" >&6
+if test $ac_cv_c_const = no; then
+
+cat >>confdefs.h <<\_ACEOF
+#define const
+_ACEOF
+
+fi
+
+echo "$as_me:$LINENO: checking for inline" >&5
+echo $ECHO_N "checking for inline... $ECHO_C" >&6
+if test "${ac_cv_c_inline+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_c_inline=no
+for ac_kw in inline __inline__ __inline; do
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifndef __cplusplus
+typedef int foo_t;
+static $ac_kw foo_t static_foo () {return 0; }
+$ac_kw foo_t foo () {return 0; }
+#endif
+
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_c_inline=$ac_kw; break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+done
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_inline" >&5
+echo "${ECHO_T}$ac_cv_c_inline" >&6
+
+
+case $ac_cv_c_inline in
+  inline | yes) ;;
+  *)
+    case $ac_cv_c_inline in
+      no) ac_val=;;
+      *) ac_val=$ac_cv_c_inline;;
+    esac
+    cat >>confdefs.h <<_ACEOF
+#ifndef __cplusplus
+#define inline $ac_val
+#endif
+_ACEOF
+    ;;
+esac
+
+echo "$as_me:$LINENO: checking for size_t" >&5
+echo $ECHO_N "checking for size_t... $ECHO_C" >&6
+if test "${ac_cv_type_size_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+if ((size_t *) 0)
+  return 0;
+if (sizeof (size_t))
+  return 0;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_type_size_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_type_size_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_type_size_t" >&5
+echo "${ECHO_T}$ac_cv_type_size_t" >&6
+if test $ac_cv_type_size_t = yes; then
+  :
+else
+
+cat >>confdefs.h <<_ACEOF
+#define size_t unsigned
+_ACEOF
+
+fi
+
+
+
+
+
+for ac_func in socket inet_aton usleep
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+if test "x$ac_cv_func_socket" = "xno"; then
+
+echo "$as_me:$LINENO: checking for socket in -lsocket" >&5
+echo $ECHO_N "checking for socket in -lsocket... $ECHO_C" >&6
+if test "${ac_cv_lib_socket_socket+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lsocket  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char socket ();
+int
+main ()
+{
+socket ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_socket_socket=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_socket_socket=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_socket_socket" >&5
+echo "${ECHO_T}$ac_cv_lib_socket_socket" >&6
+if test $ac_cv_lib_socket_socket = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBSOCKET 1
+_ACEOF
+
+  LIBS="-lsocket $LIBS"
+
+fi
+
+  echo "$as_me:$LINENO: checking for socket in -lwsock32" >&5
+echo $ECHO_N "checking for socket in -lwsock32... $ECHO_C" >&6
+  SAVELIBS="$LIBS"
+  LIBS="$LIBS -lwsock32"
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#include <winsock2.h>
+
+int
+main ()
+{
+
+socket(0, 0, 0);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_socket=yes
+    echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+LIBS="$SAVELIBS"
+    echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+
+echo "$as_me:$LINENO: checking whether to compile in debugging" >&5
+echo $ECHO_N "checking whether to compile in debugging... $ECHO_C" >&6
+# Check whether --enable-debug or --disable-debug was given.
+if test "${enable_debug+set}" = set; then
+  enableval="$enable_debug"
+
+else
+  enable_debug=yes
+fi;
+if test "$enable_debug" = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define ENABLE_DEBUGGING 1
+_ACEOF
+
+fi
+echo "$as_me:$LINENO: result: $enable_debug" >&5
+echo "${ECHO_T}$enable_debug" >&6
+
+echo "$as_me:$LINENO: checking whether to use ISMAcryp code" >&5
+echo $ECHO_N "checking whether to use ISMAcryp code... $ECHO_C" >&6
+# Check whether --enable-generic-aesicm or --disable-generic-aesicm was given.
+if test "${enable_generic_aesicm+set}" = set; then
+  enableval="$enable_generic_aesicm"
+
+else
+  enable_generic_aesicm=no
+fi;
+if test "$enable_generic_aesicm" = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define GENERIC_AESICM 1
+_ACEOF
+
+fi
+echo "$as_me:$LINENO: result: $enable_generic_aesicm" >&5
+echo "${ECHO_T}$enable_generic_aesicm" >&6
+
+echo "$as_me:$LINENO: checking whether to use syslog for error reporting" >&5
+echo $ECHO_N "checking whether to use syslog for error reporting... $ECHO_C" >&6
+# Check whether --enable-syslog or --disable-syslog was given.
+if test "${enable_syslog+set}" = set; then
+  enableval="$enable_syslog"
+
+else
+  enable_syslog=no
+fi;
+if test "$enable_syslog" = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define USE_SYSLOG 1
+_ACEOF
+
+fi
+echo "$as_me:$LINENO: result: $enable_syslog" >&5
+echo "${ECHO_T}$enable_syslog" >&6
+
+echo "$as_me:$LINENO: checking whether to use stdout for error reporting" >&5
+echo $ECHO_N "checking whether to use stdout for error reporting... $ECHO_C" >&6
+# Check whether --enable-stdout or --disable-stdout was given.
+if test "${enable_stdout+set}" = set; then
+  enableval="$enable_stdout"
+
+else
+  enable_stdout=yes
+fi;
+if test "$enable_stdout" = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define ERR_REPORTING_STDOUT 1
+_ACEOF
+
+fi
+echo "$as_me:$LINENO: result: $enable_stdout" >&5
+echo "${ECHO_T}$enable_stdout" >&6
+
+echo "$as_me:$LINENO: checking whether to use /dev/console for error reporting" >&5
+echo $ECHO_N "checking whether to use /dev/console for error reporting... $ECHO_C" >&6
+# Check whether --enable-console or --disable-console was given.
+if test "${enable_console+set}" = set; then
+  enableval="$enable_console"
+
+else
+  enable_console=no
+fi;
+if test "$enable_console" = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define USE_ERR_REPORTING_FILE 1
+_ACEOF
+
+
+cat >>confdefs.h <<\_ACEOF
+#define ERR_REPORTING_FILE "/dev/console"
+_ACEOF
+
+fi
+echo "$as_me:$LINENO: result: $enable_console" >&5
+echo "${ECHO_T}$enable_console" >&6
+
+echo "$as_me:$LINENO: checking whether to use GDOI key management" >&5
+echo $ECHO_N "checking whether to use GDOI key management... $ECHO_C" >&6
+# Check whether --enable-gdoi or --disable-gdoi was given.
+if test "${enable_gdoi+set}" = set; then
+  enableval="$enable_gdoi"
+
+else
+  enable_gdoi=no
+fi;
+if test "$enable_gdoi" = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define SRTP_GDOI 1
+_ACEOF
+
+   GDOI_OBJS=gdoi/srtp+gdoi.o
+
+fi
+echo "$as_me:$LINENO: result: $enable_gdoi" >&5
+echo "${ECHO_T}$enable_gdoi" >&6
+
+          ac_config_headers="$ac_config_headers crypto/include/config.h:config_in.h"
+
+
+                              ac_config_files="$ac_config_files Makefile crypto/Makefile doc/Makefile"
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, don't put newlines in cache variables' values.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+{
+  (set) 2>&1 |
+    case `(ac_space=' '; set | grep ac_space) 2>&1` in
+    *ac_space=\ *)
+      # `set' does not quote correctly, so add quotes (double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \).
+      sed -n \
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;;
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n \
+	"s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1=\\2/p"
+      ;;
+    esac;
+} |
+  sed '
+     t clear
+     : clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     t end
+     /^ac_cv_env/!s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     : end' >>confcache
+if diff $cache_file confcache >/dev/null 2>&1; then :; else
+  if test -w $cache_file; then
+    test "x$cache_file" != "x/dev/null" && echo "updating cache $cache_file"
+    cat confcache >$cache_file
+  else
+    echo "not updating unwritable cache $cache_file"
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+# VPATH may cause trouble with some makes, so we remove $(srcdir),
+# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=/{
+s/:*\$(srcdir):*/:/;
+s/:*\${srcdir}:*/:/;
+s/:*@srcdir@:*/:/;
+s/^\([^=]*=[	 ]*\):*/\1/;
+s/:*$//;
+s/^[^=]*=[	 ]*$//;
+}'
+fi
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_i=`echo "$ac_i" |
+	 sed 's/\$U\././;s/\.o$//;s/\.obj$//'`
+  # 2. Add them.
+  ac_libobjs="$ac_libobjs $ac_i\$U.$ac_objext"
+  ac_ltlibobjs="$ac_ltlibobjs $ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+
+: ${CONFIG_STATUS=./config.status}
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ echo "$as_me:$LINENO: creating $CONFIG_STATUS" >&5
+echo "$as_me: creating $CONFIG_STATUS" >&6;}
+cat >$CONFIG_STATUS <<_ACEOF
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+SHELL=\${CONFIG_SHELL-$SHELL}
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+## --------------------- ##
+## M4sh Initialization.  ##
+## --------------------- ##
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+  set -o posix
+fi
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# Support unset when possible.
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+
+# Work around bugs in pre-3.0 UWIN ksh.
+$as_unset ENV MAIL MAILPATH
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+for as_var in \
+  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+  LC_TELEPHONE LC_TIME
+do
+  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
+    eval $as_var=C; export $as_var
+  else
+    $as_unset $as_var
+  fi
+done
+
+# Required to use basename.
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename /) >/dev/null 2>&1 && test "X`basename / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+
+# Name of the executable.
+as_me=`$as_basename "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)$' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; }
+  	  /^X\/\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\/\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+
+
+# PATH needs CR, and LINENO needs CR and PATH.
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+
+
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2"  || {
+  # Find who we are.  Look in the path if we contain no path at all
+  # relative or not.
+  case $0 in
+    *[\\/]* ) as_myself=$0 ;;
+    *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+done
+
+       ;;
+  esac
+  # We did not find ourselves, most probably we were run as `sh COMMAND'
+  # in which case we are not to be found in the path.
+  if test "x$as_myself" = x; then
+    as_myself=$0
+  fi
+  if test ! -f "$as_myself"; then
+    { { echo "$as_me:$LINENO: error: cannot find myself; rerun with an absolute path" >&5
+echo "$as_me: error: cannot find myself; rerun with an absolute path" >&2;}
+   { (exit 1); exit 1; }; }
+  fi
+  case $CONFIG_SHELL in
+  '')
+    as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for as_base in sh bash ksh sh5; do
+	 case $as_dir in
+	 /*)
+	   if ("$as_dir/$as_base" -c '
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2" ') 2>/dev/null; then
+	     $as_unset BASH_ENV || test "${BASH_ENV+set}" != set || { BASH_ENV=; export BASH_ENV; }
+	     $as_unset ENV || test "${ENV+set}" != set || { ENV=; export ENV; }
+	     CONFIG_SHELL=$as_dir/$as_base
+	     export CONFIG_SHELL
+	     exec "$CONFIG_SHELL" "$0" ${1+"$@"}
+	   fi;;
+	 esac
+       done
+done
+;;
+  esac
+
+  # Create $as_me.lineno as a copy of $as_myself, but with $LINENO
+  # uniformly replaced by the line number.  The first 'sed' inserts a
+  # line-number line before each line; the second 'sed' does the real
+  # work.  The second script uses 'N' to pair each line-number line
+  # with the numbered line, and appends trailing '-' during
+  # substitution so that $LINENO is not a special case at line end.
+  # (Raja R Harinath suggested sed '=', and Paul Eggert wrote the
+  # second 'sed' script.  Blame Lee E. McMahon for sed's syntax.  :-)
+  sed '=' <$as_myself |
+    sed '
+      N
+      s,$,-,
+      : loop
+      s,^\(['$as_cr_digits']*\)\(.*\)[$]LINENO\([^'$as_cr_alnum'_]\),\1\2\1\3,
+      t loop
+      s,-$,,
+      s,^['$as_cr_digits']*\n,,
+    ' >$as_me.lineno &&
+  chmod +x $as_me.lineno ||
+    { { echo "$as_me:$LINENO: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&5
+echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2;}
+   { (exit 1); exit 1; }; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensible to this).
+  . ./$as_me.lineno
+  # Exit status is that of the last command.
+  exit
+}
+
+
+case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
+  *c*,-n*) ECHO_N= ECHO_C='
+' ECHO_T='	' ;;
+  *c*,*  ) ECHO_N=-n ECHO_C= ECHO_T= ;;
+  *)       ECHO_N= ECHO_C='\c' ECHO_T= ;;
+esac
+
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+rm -f conf$$ conf$$.exe conf$$.file
+echo >conf$$.file
+if ln -s conf$$.file conf$$ 2>/dev/null; then
+  # We could just check for DJGPP; but this test a) works b) is more generic
+  # and c) will remain valid once DJGPP supports symlinks (DJGPP 2.04).
+  if test -f conf$$.exe; then
+    # Don't use ln at all; we don't have any links
+    as_ln_s='cp -p'
+  else
+    as_ln_s='ln -s'
+  fi
+elif ln conf$$.file conf$$ 2>/dev/null; then
+  as_ln_s=ln
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.file
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p=:
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_executable_p="test -f"
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.
+as_nl='
+'
+IFS=" 	$as_nl"
+
+# CDPATH.
+$as_unset CDPATH
+
+exec 6>&1
+
+# Open the log real soon, to keep \$[0] and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.  Logging --version etc. is OK.
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+} >&5
+cat >&5 <<_CSEOF
+
+This file was extended by $as_me, which was
+generated by GNU Autoconf 2.59.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+_CSEOF
+echo "on `(hostname || uname -n) 2>/dev/null | sed 1q`" >&5
+echo >&5
+_ACEOF
+
+# Files that config.status was made for.
+if test -n "$ac_config_files"; then
+  echo "config_files=\"$ac_config_files\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_headers"; then
+  echo "config_headers=\"$ac_config_headers\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_links"; then
+  echo "config_links=\"$ac_config_links\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_commands"; then
+  echo "config_commands=\"$ac_config_commands\"" >>$CONFIG_STATUS
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+ac_cs_usage="\
+\`$as_me' instantiates files from templates according to the
+current configuration.
+
+Usage: $0 [OPTIONS] [FILE]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number, then exit
+  -q, --quiet      do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+  --file=FILE[:TEMPLATE]
+		   instantiate the configuration file FILE
+  --header=FILE[:TEMPLATE]
+		   instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Report bugs to <bug-autoconf@gnu.org>."
+_ACEOF
+
+cat >>$CONFIG_STATUS <<_ACEOF
+ac_cs_version="\\
+config.status
+configured by $0, generated by GNU Autoconf 2.59,
+  with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
+
+Copyright (C) 2003 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+srcdir=$srcdir
+INSTALL="$INSTALL"
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+# If no file are specified by the user, then we need to provide default
+# value.  By we need to know if files were specified by the user.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=*)
+    ac_option=`expr "x$1" : 'x\([^=]*\)='`
+    ac_optarg=`expr "x$1" : 'x[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  -*)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  *) # This is not an option, so the user has probably given explicit
+     # arguments.
+     ac_option=$1
+     ac_need_defaults=false;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --vers* | -V )
+    echo "$ac_cs_version"; exit 0 ;;
+  --he | --h)
+    # Conflict between --help and --header
+    { { echo "$as_me:$LINENO: error: ambiguous option: $1
+Try \`$0 --help' for more information." >&5
+echo "$as_me: error: ambiguous option: $1
+Try \`$0 --help' for more information." >&2;}
+   { (exit 1); exit 1; }; };;
+  --help | --hel | -h )
+    echo "$ac_cs_usage"; exit 0 ;;
+  --debug | --d* | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    CONFIG_FILES="$CONFIG_FILES $ac_optarg"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    CONFIG_HEADERS="$CONFIG_HEADERS $ac_optarg"
+    ac_need_defaults=false;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) { { echo "$as_me:$LINENO: error: unrecognized option: $1
+Try \`$0 --help' for more information." >&5
+echo "$as_me: error: unrecognized option: $1
+Try \`$0 --help' for more information." >&2;}
+   { (exit 1); exit 1; }; } ;;
+
+  *) ac_config_targets="$ac_config_targets $1" ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF
+if \$ac_cs_recheck; then
+  echo "running $SHELL $0 " $ac_configure_args \$ac_configure_extra_args " --no-create --no-recursion" >&6
+  exec $SHELL $0 $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+fi
+
+_ACEOF
+
+
+
+
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+for ac_config_target in $ac_config_targets
+do
+  case "$ac_config_target" in
+  # Handling of arguments.
+  "Makefile" ) CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+  "crypto/Makefile" ) CONFIG_FILES="$CONFIG_FILES crypto/Makefile" ;;
+  "doc/Makefile" ) CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
+  "crypto/include/config.h" ) CONFIG_HEADERS="$CONFIG_HEADERS crypto/include/config.h:config_in.h" ;;
+  *) { { echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
+echo "$as_me: error: invalid argument: $ac_config_target" >&2;}
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason to put it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Create a temporary directory, and hook for its removal unless debugging.
+$debug ||
+{
+  trap 'exit_status=$?; rm -rf $tmp && exit $exit_status' 0
+  trap '{ (exit 1); exit 1; }' 1 2 13 15
+}
+
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d -q "./confstatXXXXXX") 2>/dev/null` &&
+  test -n "$tmp" && test -d "$tmp"
+}  ||
+{
+  tmp=./confstat$$-$RANDOM
+  (umask 077 && mkdir $tmp)
+} ||
+{
+   echo "$me: cannot create a temporary directory in ." >&2
+   { (exit 1); exit 1; }
+}
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<_ACEOF
+
+#
+# CONFIG_FILES section.
+#
+
+# No need to generate the scripts if there are no CONFIG_FILES.
+# This happens for instance when ./config.status config.h
+if test -n "\$CONFIG_FILES"; then
+  # Protect against being on the right side of a sed subst in config.status.
+  sed 's/,@/@@/; s/@,/@@/; s/,;t t\$/@;t t/; /@;t t\$/s/[\\\\&,]/\\\\&/g;
+   s/@@/,@/; s/@@/@,/; s/@;t t\$/,;t t/' >\$tmp/subs.sed <<\\CEOF
+s,@SHELL@,$SHELL,;t t
+s,@PATH_SEPARATOR@,$PATH_SEPARATOR,;t t
+s,@PACKAGE_NAME@,$PACKAGE_NAME,;t t
+s,@PACKAGE_TARNAME@,$PACKAGE_TARNAME,;t t
+s,@PACKAGE_VERSION@,$PACKAGE_VERSION,;t t
+s,@PACKAGE_STRING@,$PACKAGE_STRING,;t t
+s,@PACKAGE_BUGREPORT@,$PACKAGE_BUGREPORT,;t t
+s,@exec_prefix@,$exec_prefix,;t t
+s,@prefix@,$prefix,;t t
+s,@program_transform_name@,$program_transform_name,;t t
+s,@bindir@,$bindir,;t t
+s,@sbindir@,$sbindir,;t t
+s,@libexecdir@,$libexecdir,;t t
+s,@datadir@,$datadir,;t t
+s,@sysconfdir@,$sysconfdir,;t t
+s,@sharedstatedir@,$sharedstatedir,;t t
+s,@localstatedir@,$localstatedir,;t t
+s,@libdir@,$libdir,;t t
+s,@includedir@,$includedir,;t t
+s,@oldincludedir@,$oldincludedir,;t t
+s,@infodir@,$infodir,;t t
+s,@mandir@,$mandir,;t t
+s,@build_alias@,$build_alias,;t t
+s,@host_alias@,$host_alias,;t t
+s,@target_alias@,$target_alias,;t t
+s,@DEFS@,$DEFS,;t t
+s,@ECHO_C@,$ECHO_C,;t t
+s,@ECHO_N@,$ECHO_N,;t t
+s,@ECHO_T@,$ECHO_T,;t t
+s,@LIBS@,$LIBS,;t t
+s,@RANLIB@,$RANLIB,;t t
+s,@ac_ct_RANLIB@,$ac_ct_RANLIB,;t t
+s,@CC@,$CC,;t t
+s,@CFLAGS@,$CFLAGS,;t t
+s,@LDFLAGS@,$LDFLAGS,;t t
+s,@CPPFLAGS@,$CPPFLAGS,;t t
+s,@ac_ct_CC@,$ac_ct_CC,;t t
+s,@EXEEXT@,$EXEEXT,;t t
+s,@OBJEXT@,$OBJEXT,;t t
+s,@INSTALL_PROGRAM@,$INSTALL_PROGRAM,;t t
+s,@INSTALL_SCRIPT@,$INSTALL_SCRIPT,;t t
+s,@INSTALL_DATA@,$INSTALL_DATA,;t t
+s,@build@,$build,;t t
+s,@build_cpu@,$build_cpu,;t t
+s,@build_vendor@,$build_vendor,;t t
+s,@build_os@,$build_os,;t t
+s,@host@,$host,;t t
+s,@host_cpu@,$host_cpu,;t t
+s,@host_vendor@,$host_vendor,;t t
+s,@host_os@,$host_os,;t t
+s,@EXE@,$EXE,;t t
+s,@RNG_OBJS@,$RNG_OBJS,;t t
+s,@CPP@,$CPP,;t t
+s,@EGREP@,$EGREP,;t t
+s,@GDOI_OBJS@,$GDOI_OBJS,;t t
+s,@LIBOBJS@,$LIBOBJS,;t t
+s,@LTLIBOBJS@,$LTLIBOBJS,;t t
+CEOF
+
+_ACEOF
+
+  cat >>$CONFIG_STATUS <<\_ACEOF
+  # Split the substitutions into bite-sized pieces for seds with
+  # small command number limits, like on Digital OSF/1 and HP-UX.
+  ac_max_sed_lines=48
+  ac_sed_frag=1 # Number of current file.
+  ac_beg=1 # First line for current file.
+  ac_end=$ac_max_sed_lines # Line after last line for current file.
+  ac_more_lines=:
+  ac_sed_cmds=
+  while $ac_more_lines; do
+    if test $ac_beg -gt 1; then
+      sed "1,${ac_beg}d; ${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
+    else
+      sed "${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
+    fi
+    if test ! -s $tmp/subs.frag; then
+      ac_more_lines=false
+    else
+      # The purpose of the label and of the branching condition is to
+      # speed up the sed processing (if there are no `@' at all, there
+      # is no need to browse any of the substitutions).
+      # These are the two extra sed commands mentioned above.
+      (echo ':t
+  /@[a-zA-Z_][a-zA-Z_0-9]*@/!b' && cat $tmp/subs.frag) >$tmp/subs-$ac_sed_frag.sed
+      if test -z "$ac_sed_cmds"; then
+	ac_sed_cmds="sed -f $tmp/subs-$ac_sed_frag.sed"
+      else
+	ac_sed_cmds="$ac_sed_cmds | sed -f $tmp/subs-$ac_sed_frag.sed"
+      fi
+      ac_sed_frag=`expr $ac_sed_frag + 1`
+      ac_beg=$ac_end
+      ac_end=`expr $ac_end + $ac_max_sed_lines`
+    fi
+  done
+  if test -z "$ac_sed_cmds"; then
+    ac_sed_cmds=cat
+  fi
+fi # test -n "$CONFIG_FILES"
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+for ac_file in : $CONFIG_FILES; do test "x$ac_file" = x: && continue
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case $ac_file in
+  - | *:- | *:-:* ) # input from stdin
+	cat >$tmp/stdin
+	ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  *:* ) ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  * )   ac_file_in=$ac_file.in ;;
+  esac
+
+  # Compute @srcdir@, @top_srcdir@, and @INSTALL@ for subdirectories.
+  ac_dir=`(dirname "$ac_file") 2>/dev/null ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+  ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+
+# Do not use `cd foo && pwd` to compute absolute paths, because
+# the directories may not exist.
+case `pwd` in
+.) ac_abs_builddir="$ac_dir";;
+*)
+  case "$ac_dir" in
+  .) ac_abs_builddir=`pwd`;;
+  [\\/]* | ?:[\\/]* ) ac_abs_builddir="$ac_dir";;
+  *) ac_abs_builddir=`pwd`/"$ac_dir";;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_builddir=${ac_top_builddir}.;;
+*)
+  case ${ac_top_builddir}. in
+  .) ac_abs_top_builddir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_builddir=${ac_top_builddir}.;;
+  *) ac_abs_top_builddir=$ac_abs_builddir/${ac_top_builddir}.;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_srcdir=$ac_srcdir;;
+*)
+  case $ac_srcdir in
+  .) ac_abs_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_srcdir=$ac_srcdir;;
+  *) ac_abs_srcdir=$ac_abs_builddir/$ac_srcdir;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_srcdir=$ac_top_srcdir;;
+*)
+  case $ac_top_srcdir in
+  .) ac_abs_top_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_srcdir=$ac_top_srcdir;;
+  *) ac_abs_top_srcdir=$ac_abs_builddir/$ac_top_srcdir;;
+  esac;;
+esac
+
+
+  case $INSTALL in
+  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+  *) ac_INSTALL=$ac_top_builddir$INSTALL ;;
+  esac
+
+  if test x"$ac_file" != x-; then
+    { echo "$as_me:$LINENO: creating $ac_file" >&5
+echo "$as_me: creating $ac_file" >&6;}
+    rm -f "$ac_file"
+  fi
+  # Let's still pretend it is `configure' which instantiates (i.e., don't
+  # use $as_me), people would be surprised to read:
+  #    /* config.h.  Generated by config.status.  */
+  if test x"$ac_file" = x-; then
+    configure_input=
+  else
+    configure_input="$ac_file.  "
+  fi
+  configure_input=$configure_input"Generated from `echo $ac_file_in |
+				     sed 's,.*/,,'` by configure."
+
+  # First look for the input files in the build tree, otherwise in the
+  # src tree.
+  ac_file_inputs=`IFS=:
+    for f in $ac_file_in; do
+      case $f in
+      -) echo $tmp/stdin ;;
+      [\\/$]*)
+	 # Absolute (can't be DOS-style, as IFS=:)
+	 test -f "$f" || { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 echo "$f";;
+      *) # Relative
+	 if test -f "$f"; then
+	   # Build tree
+	   echo "$f"
+	 elif test -f "$srcdir/$f"; then
+	   # Source tree
+	   echo "$srcdir/$f"
+	 else
+	   # /dev/null tree
+	   { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 fi;;
+      esac
+    done` || { (exit 1); exit 1; }
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF
+  sed "$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s,@configure_input@,$configure_input,;t t
+s,@srcdir@,$ac_srcdir,;t t
+s,@abs_srcdir@,$ac_abs_srcdir,;t t
+s,@top_srcdir@,$ac_top_srcdir,;t t
+s,@abs_top_srcdir@,$ac_abs_top_srcdir,;t t
+s,@builddir@,$ac_builddir,;t t
+s,@abs_builddir@,$ac_abs_builddir,;t t
+s,@top_builddir@,$ac_top_builddir,;t t
+s,@abs_top_builddir@,$ac_abs_top_builddir,;t t
+s,@INSTALL@,$ac_INSTALL,;t t
+" $ac_file_inputs | (eval "$ac_sed_cmds") >$tmp/out
+  rm -f $tmp/stdin
+  if test x"$ac_file" != x-; then
+    mv $tmp/out $ac_file
+  else
+    cat $tmp/out
+    rm -f $tmp/out
+  fi
+
+done
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+#
+# CONFIG_HEADER section.
+#
+
+# These sed commands are passed to sed as "A NAME B NAME C VALUE D", where
+# NAME is the cpp macro being defined and VALUE is the value it is being given.
+#
+# ac_d sets the value in "#define NAME VALUE" lines.
+ac_dA='s,^\([	 ]*\)#\([	 ]*define[	 ][	 ]*\)'
+ac_dB='[	 ].*$,\1#\2'
+ac_dC=' '
+ac_dD=',;t'
+# ac_u turns "#undef NAME" without trailing blanks into "#define NAME VALUE".
+ac_uA='s,^\([	 ]*\)#\([	 ]*\)undef\([	 ][	 ]*\)'
+ac_uB='$,\1#\2define\3'
+ac_uC=' '
+ac_uD=',;t'
+
+for ac_file in : $CONFIG_HEADERS; do test "x$ac_file" = x: && continue
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case $ac_file in
+  - | *:- | *:-:* ) # input from stdin
+	cat >$tmp/stdin
+	ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  *:* ) ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  * )   ac_file_in=$ac_file.in ;;
+  esac
+
+  test x"$ac_file" != x- && { echo "$as_me:$LINENO: creating $ac_file" >&5
+echo "$as_me: creating $ac_file" >&6;}
+
+  # First look for the input files in the build tree, otherwise in the
+  # src tree.
+  ac_file_inputs=`IFS=:
+    for f in $ac_file_in; do
+      case $f in
+      -) echo $tmp/stdin ;;
+      [\\/$]*)
+	 # Absolute (can't be DOS-style, as IFS=:)
+	 test -f "$f" || { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 # Do quote $f, to prevent DOS paths from being IFS'd.
+	 echo "$f";;
+      *) # Relative
+	 if test -f "$f"; then
+	   # Build tree
+	   echo "$f"
+	 elif test -f "$srcdir/$f"; then
+	   # Source tree
+	   echo "$srcdir/$f"
+	 else
+	   # /dev/null tree
+	   { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 fi;;
+      esac
+    done` || { (exit 1); exit 1; }
+  # Remove the trailing spaces.
+  sed 's/[	 ]*$//' $ac_file_inputs >$tmp/in
+
+_ACEOF
+
+# Transform confdefs.h into two sed scripts, `conftest.defines' and
+# `conftest.undefs', that substitutes the proper values into
+# config.h.in to produce config.h.  The first handles `#define'
+# templates, and the second `#undef' templates.
+# And first: Protect against being on the right side of a sed subst in
+# config.status.  Protect against being in an unquoted here document
+# in config.status.
+rm -f conftest.defines conftest.undefs
+# Using a here document instead of a string reduces the quoting nightmare.
+# Putting comments in sed scripts is not portable.
+#
+# `end' is used to avoid that the second main sed command (meant for
+# 0-ary CPP macros) applies to n-ary macro definitions.
+# See the Autoconf documentation for `clear'.
+cat >confdef2sed.sed <<\_ACEOF
+s/[\\&,]/\\&/g
+s,[\\$`],\\&,g
+t clear
+: clear
+s,^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 (][^	 (]*\)\(([^)]*)\)[	 ]*\(.*\)$,${ac_dA}\1${ac_dB}\1\2${ac_dC}\3${ac_dD},gp
+t end
+s,^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 ][^	 ]*\)[	 ]*\(.*\)$,${ac_dA}\1${ac_dB}\1${ac_dC}\2${ac_dD},gp
+: end
+_ACEOF
+# If some macros were called several times there might be several times
+# the same #defines, which is useless.  Nevertheless, we may not want to
+# sort them, since we want the *last* AC-DEFINE to be honored.
+uniq confdefs.h | sed -n -f confdef2sed.sed >conftest.defines
+sed 's/ac_d/ac_u/g' conftest.defines >conftest.undefs
+rm -f confdef2sed.sed
+
+# This sed command replaces #undef with comments.  This is necessary, for
+# example, in the case of _POSIX_SOURCE, which is predefined and required
+# on some systems where configure will not decide to define it.
+cat >>conftest.undefs <<\_ACEOF
+s,^[	 ]*#[	 ]*undef[	 ][	 ]*[a-zA-Z_][a-zA-Z_0-9]*,/* & */,
+_ACEOF
+
+# Break up conftest.defines because some shells have a limit on the size
+# of here documents, and old seds have small limits too (100 cmds).
+echo '  # Handle all the #define templates only if necessary.' >>$CONFIG_STATUS
+echo '  if grep "^[	 ]*#[	 ]*define" $tmp/in >/dev/null; then' >>$CONFIG_STATUS
+echo '  # If there are no defines, we may have an empty if/fi' >>$CONFIG_STATUS
+echo '  :' >>$CONFIG_STATUS
+rm -f conftest.tail
+while grep . conftest.defines >/dev/null
+do
+  # Write a limited-size here document to $tmp/defines.sed.
+  echo '  cat >$tmp/defines.sed <<CEOF' >>$CONFIG_STATUS
+  # Speed up: don't consider the non `#define' lines.
+  echo '/^[	 ]*#[	 ]*define/!b' >>$CONFIG_STATUS
+  # Work around the forget-to-reset-the-flag bug.
+  echo 't clr' >>$CONFIG_STATUS
+  echo ': clr' >>$CONFIG_STATUS
+  sed ${ac_max_here_lines}q conftest.defines >>$CONFIG_STATUS
+  echo 'CEOF
+  sed -f $tmp/defines.sed $tmp/in >$tmp/out
+  rm -f $tmp/in
+  mv $tmp/out $tmp/in
+' >>$CONFIG_STATUS
+  sed 1,${ac_max_here_lines}d conftest.defines >conftest.tail
+  rm -f conftest.defines
+  mv conftest.tail conftest.defines
+done
+rm -f conftest.defines
+echo '  fi # grep' >>$CONFIG_STATUS
+echo >>$CONFIG_STATUS
+
+# Break up conftest.undefs because some shells have a limit on the size
+# of here documents, and old seds have small limits too (100 cmds).
+echo '  # Handle all the #undef templates' >>$CONFIG_STATUS
+rm -f conftest.tail
+while grep . conftest.undefs >/dev/null
+do
+  # Write a limited-size here document to $tmp/undefs.sed.
+  echo '  cat >$tmp/undefs.sed <<CEOF' >>$CONFIG_STATUS
+  # Speed up: don't consider the non `#undef'
+  echo '/^[	 ]*#[	 ]*undef/!b' >>$CONFIG_STATUS
+  # Work around the forget-to-reset-the-flag bug.
+  echo 't clr' >>$CONFIG_STATUS
+  echo ': clr' >>$CONFIG_STATUS
+  sed ${ac_max_here_lines}q conftest.undefs >>$CONFIG_STATUS
+  echo 'CEOF
+  sed -f $tmp/undefs.sed $tmp/in >$tmp/out
+  rm -f $tmp/in
+  mv $tmp/out $tmp/in
+' >>$CONFIG_STATUS
+  sed 1,${ac_max_here_lines}d conftest.undefs >conftest.tail
+  rm -f conftest.undefs
+  mv conftest.tail conftest.undefs
+done
+rm -f conftest.undefs
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+  # Let's still pretend it is `configure' which instantiates (i.e., don't
+  # use $as_me), people would be surprised to read:
+  #    /* config.h.  Generated by config.status.  */
+  if test x"$ac_file" = x-; then
+    echo "/* Generated by configure.  */" >$tmp/config.h
+  else
+    echo "/* $ac_file.  Generated by configure.  */" >$tmp/config.h
+  fi
+  cat $tmp/in >>$tmp/config.h
+  rm -f $tmp/in
+  if test x"$ac_file" != x-; then
+    if diff $ac_file $tmp/config.h >/dev/null 2>&1; then
+      { echo "$as_me:$LINENO: $ac_file is unchanged" >&5
+echo "$as_me: $ac_file is unchanged" >&6;}
+    else
+      ac_dir=`(dirname "$ac_file") 2>/dev/null ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+      { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+      rm -f $ac_file
+      mv $tmp/config.h $ac_file
+    fi
+  else
+    cat $tmp/config.h
+    rm -f $tmp/config.h
+  fi
+done
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+{ (exit 0); exit 0; }
+_ACEOF
+chmod +x $CONFIG_STATUS
+ac_clean_files=$ac_clean_files_save
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || { (exit 1); exit 1; }
+fi
+
+
+# This is needed when building outside the source dir.
+{ if $as_mkdir_p; then
+    mkdir -p crypto/ae_xfm
+  else
+    as_dir=crypto/ae_xfm
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory crypto/ae_xfm" >&5
+echo "$as_me: error: cannot create directory crypto/ae_xfm" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+{ if $as_mkdir_p; then
+    mkdir -p crypto/cipher
+  else
+    as_dir=crypto/cipher
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory crypto/cipher" >&5
+echo "$as_me: error: cannot create directory crypto/cipher" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+{ if $as_mkdir_p; then
+    mkdir -p crypto/hash
+  else
+    as_dir=crypto/hash
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory crypto/hash" >&5
+echo "$as_me: error: cannot create directory crypto/hash" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+{ if $as_mkdir_p; then
+    mkdir -p crypto/kernel
+  else
+    as_dir=crypto/kernel
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory crypto/kernel" >&5
+echo "$as_me: error: cannot create directory crypto/kernel" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+{ if $as_mkdir_p; then
+    mkdir -p crypto/math
+  else
+    as_dir=crypto/math
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory crypto/math" >&5
+echo "$as_me: error: cannot create directory crypto/math" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+{ if $as_mkdir_p; then
+    mkdir -p crypto/replay
+  else
+    as_dir=crypto/replay
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory crypto/replay" >&5
+echo "$as_me: error: cannot create directory crypto/replay" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+{ if $as_mkdir_p; then
+    mkdir -p crypto/rng
+  else
+    as_dir=crypto/rng
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory crypto/rng" >&5
+echo "$as_me: error: cannot create directory crypto/rng" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+{ if $as_mkdir_p; then
+    mkdir -p crypto/test
+  else
+    as_dir=crypto/test
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory crypto/test" >&5
+echo "$as_me: error: cannot create directory crypto/test" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+{ if $as_mkdir_p; then
+    mkdir -p doc
+  else
+    as_dir=doc
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory doc" >&5
+echo "$as_me: error: cannot create directory doc" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+{ if $as_mkdir_p; then
+    mkdir -p srtp
+  else
+    as_dir=srtp
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory srtp" >&5
+echo "$as_me: error: cannot create directory srtp" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+{ if $as_mkdir_p; then
+    mkdir -p tables
+  else
+    as_dir=tables
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory tables" >&5
+echo "$as_me: error: cannot create directory tables" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+{ if $as_mkdir_p; then
+    mkdir -p test
+  else
+    as_dir=test
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory test" >&5
+echo "$as_me: error: cannot create directory test" >&2;}
+   { (exit 1); exit 1; }; }; }
+
diff --git a/configure.in b/configure.in
new file mode 100644
index 0000000..d6ad247
--- /dev/null
+++ b/configure.in
@@ -0,0 +1,209 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_INIT(srtp)
+
+dnl Must come before AC_PROG_CC
+if test -z "$CFLAGS"; then
+   dnl Default value for CFLAGS if not specified.
+   CFLAGS="-Wall -O4 -fexpensive-optimizations -funroll-loops"
+fi
+
+dnl Checks for programs.
+AC_PROG_RANLIB
+AC_PROG_CC
+AC_PROG_INSTALL
+
+dnl Check the byte order
+AC_C_BIGENDIAN
+
+AC_CANONICAL_HOST
+
+dnl check host_cpu type, set defines appropriately
+case $host_cpu in
+     i*86 )
+	AC_DEFINE(CPU_CISC, 1,
+	   [Define if building for a CISC machine (e.g. Intel).])
+        AC_DEFINE(HAVE_X86, 1,
+	   [Define to use X86 inlined assembly code]);; 
+	* )
+	# CPU_RISC is only supported for big endian machines.
+	if test "$ac_cv_c_bigendian" = "yes"; then
+	   AC_DEFINE(CPU_RISC, 1,
+	    [Define if building for a RISC machine (assume slow byte access).])
+	else
+	   AC_DEFINE(CPU_CISC, 1)
+	fi
+	;;
+esac	
+
+dnl Check if we are on a Windows platform.
+case $host_os in
+    *cygwin*|*mingw* ) 
+	EXE=.exe
+	HOST_IS_WINDOWS=yes
+	;;
+    * )
+	EXE=""
+	;;
+esac
+AC_SUBST(EXE)   # define executable suffix; this is needed for `make clean'
+
+
+AC_ARG_ENABLE(kernel-linux,
+  [AS_HELP_STRING([--enable-kernel-linux],
+		  [build library to run in Linux kernel context])],
+  [], enable_kernel_linux=no)
+AC_MSG_CHECKING(whether to build for Linux kernel context)
+if test "$enable_kernel_linux" = "yes"; then
+   AC_DEFINE(SRTP_KERNEL, 1,
+	[Define to compile for kernel contexts.])
+   AC_DEFINE(SRTP_KERNEL_LINUX, 1,
+	[Define to compile for Linux kernel context.])
+fi
+AC_MSG_RESULT($enable_kernel_linux)
+
+if test "$cross_compiling" != yes -a "$HOST_IS_WINDOWS" != yes; then
+   dnl Check for /dev/urandom
+   AC_CHECK_FILE(/dev/urandom, DEV_URANDOM=/dev/urandom,
+      [AC_CHECK_FILE(/dev/random, DEV_URANDOM=/dev/random)])
+fi
+
+AC_MSG_CHECKING(which random device to use)
+if test "$enable_kernel_linux" = "yes"; then
+   RNG_OBJS=rand_linux_kernel.o
+   AC_MSG_RESULT([Linux kernel builtin])
+else
+   RNG_OBJS=rand_source.o
+   if test -n "$DEV_URANDOM"; then
+      AC_DEFINE_UNQUOTED(DEV_URANDOM, "$DEV_URANDOM",[Path to random device])
+      AC_MSG_RESULT([$DEV_URANDOM])
+   else
+      AC_MSG_RESULT([standard rand() function...])
+   fi
+fi
+AC_SUBST(RNG_OBJS)
+
+
+dnl Checks for header files.
+AC_HEADER_STDC
+AC_CHECK_HEADERS(stdlib.h)
+AC_CHECK_HEADERS(unistd.h)
+AC_CHECK_HEADERS(byteswap.h)
+AC_CHECK_HEADERS(stdint.h)
+AC_CHECK_HEADERS(sys/uio.h)
+AC_CHECK_HEADERS(inttypes.h)
+AC_CHECK_HEADERS(sys/types.h)
+AC_CHECK_HEADERS(machine/types.h)
+AC_CHECK_HEADERS(sys/int_types.h)
+
+dnl socket() and friends
+AC_CHECK_HEADERS(sys/socket.h netinet/in.h arpa/inet.h)
+AC_CHECK_HEADERS(windows.h, [AC_CHECK_HEADERS(winsock2.h)])
+
+AC_CHECK_HEADERS(syslog.h)
+
+AC_CHECK_TYPES([int8_t,uint8_t,int16_t,uint16_t,int32_t,uint32_t,uint64_t])
+AC_CHECK_SIZEOF(unsigned long)
+AC_CHECK_SIZEOF(unsigned long long)
+
+dnl Checks for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+AC_C_INLINE
+AC_TYPE_SIZE_T
+
+dnl Checks for library functions.
+AC_CHECK_FUNCS(socket inet_aton usleep)
+
+dnl Find socket function if not found yet.
+if test "x$ac_cv_func_socket" = "xno"; then
+  AC_CHECK_LIB(socket, socket)
+  AC_MSG_CHECKING([for socket in -lwsock32])
+  SAVELIBS="$LIBS"
+  LIBS="$LIBS -lwsock32"
+  AC_TRY_LINK([
+#include <winsock2.h>
+],[
+socket(0, 0, 0);
+],
+    ac_cv_func_socket=yes
+    AC_MSG_RESULT(yes),
+    LIBS="$SAVELIBS"
+    AC_MSG_RESULT(no))
+fi
+
+AC_MSG_CHECKING(whether to compile in debugging)
+AC_ARG_ENABLE(debug,
+  [AS_HELP_STRING([--disable-debug],
+		  [do not compile in dynamic debugging system])],
+  [], enable_debug=yes)
+if test "$enable_debug" = "yes"; then
+   AC_DEFINE(ENABLE_DEBUGGING, 1,
+      [Define to compile in dynamic debugging system.])
+fi
+AC_MSG_RESULT($enable_debug)
+
+AC_MSG_CHECKING(whether to use ISMAcryp code)
+AC_ARG_ENABLE(generic-aesicm,
+  [AS_HELP_STRING([--enable-generic-aesicm],
+		  [compile in changes for ISMAcryp])],
+  [], enable_generic_aesicm=no)
+if test "$enable_generic_aesicm" = "yes"; then
+   AC_DEFINE(GENERIC_AESICM, 1, [Define this to use ISMAcryp code.])
+fi
+AC_MSG_RESULT($enable_generic_aesicm)
+
+AC_MSG_CHECKING(whether to use syslog for error reporting)
+AC_ARG_ENABLE(syslog,
+  [AS_HELP_STRING([--enable-syslog], [use syslog for error reporting])],
+  [], enable_syslog=no)
+if test "$enable_syslog" = "yes"; then
+   AC_DEFINE(USE_SYSLOG, 1, [Define to use syslog logging.])
+fi
+AC_MSG_RESULT($enable_syslog)
+
+AC_MSG_CHECKING(whether to use stdout for error reporting)
+AC_ARG_ENABLE(stdout,
+  [AS_HELP_STRING([--disable-stdout], [don't use stdout for error reporting])],
+  [], enable_stdout=yes)
+if test "$enable_stdout" = "yes"; then
+   AC_DEFINE(ERR_REPORTING_STDOUT, 1, [Define to use logging to stdout.])
+fi
+AC_MSG_RESULT($enable_stdout)
+
+AC_MSG_CHECKING(whether to use /dev/console for error reporting)
+AC_ARG_ENABLE(console,
+  [AS_HELP_STRING([--enable-console], [use /dev/console for error reporting])],
+  [], enable_console=no)
+if test "$enable_console" = "yes"; then
+   AC_DEFINE(USE_ERR_REPORTING_FILE, 1, [Write errors to this file])
+   AC_DEFINE(ERR_REPORTING_FILE, "/dev/console", [Report errors to this file.])
+fi
+AC_MSG_RESULT($enable_console)
+
+AC_MSG_CHECKING(whether to use GDOI key management)
+AC_ARG_ENABLE(gdoi,
+  [AS_HELP_STRING([--enable-gdoi], [enable GDOI key management])],
+  [], enable_gdoi=no)
+if test "$enable_gdoi" = "yes"; then
+   AC_DEFINE(SRTP_GDOI, 1, [Define to use GDOI.])
+   GDOI_OBJS=gdoi/srtp+gdoi.o
+   AC_SUBST(GDOI_OBJS)                              
+fi
+AC_MSG_RESULT($enable_gdoi)
+
+AC_CONFIG_HEADER(crypto/include/config.h:config_in.h)
+
+AC_OUTPUT(Makefile crypto/Makefile doc/Makefile)
+
+# This is needed when building outside the source dir.
+AS_MKDIR_P(crypto/ae_xfm)
+AS_MKDIR_P(crypto/cipher)
+AS_MKDIR_P(crypto/hash)
+AS_MKDIR_P(crypto/kernel)
+AS_MKDIR_P(crypto/math)
+AS_MKDIR_P(crypto/replay)
+AS_MKDIR_P(crypto/rng)
+AS_MKDIR_P(crypto/test)
+AS_MKDIR_P(doc)
+AS_MKDIR_P(srtp)
+AS_MKDIR_P(tables)
+AS_MKDIR_P(test)
diff --git a/crypto/Makefile b/crypto/Makefile
new file mode 100644
index 0000000..d7ac61f
--- /dev/null
+++ b/crypto/Makefile
@@ -0,0 +1,130 @@
+# Makefile for libcryptomodule.a
+#
+# David A. McGrew
+# Cisco Systems, Inc.
+
+srcdir = .
+top_srcdir = ..
+top_builddir = ../
+
+
+CC	= gcc
+INCDIR	= -Iinclude -I$(srcdir)/include
+DEFS	= -DHAVE_CONFIG_H
+CPPFLAGS= 
+CFLAGS	= -Wall -O4 -fexpensive-optimizations -funroll-loops
+LIBS	= 
+LDFLAGS	=  -L.
+COMPILE = $(CC) $(DEFS) $(INCDIR) $(CPPFLAGS) $(CFLAGS)
+CRYPTOLIB = -lcryptomodule
+
+RANLIB	= ranlib
+
+# EXE defines the suffix on executables - it's .exe for cygwin, and
+# null on linux, bsd, and OS X and other OSes.  we define this so that
+# `make clean` will work on the cygwin platform
+EXE = 
+# Random source.
+RNG_OBJS = rand_source.o
+
+ifdef ARCH
+  DEFS += -D$(ARCH)=1
+endif
+
+ifdef sysname
+  DEFS += -D$(sysname)=1
+endif
+
+.PHONY: dummy all runtest clean superclean
+
+dummy : all runtest 
+
+# test applications 
+
+testapp = test/cipher_driver$(EXE) test/datatypes_driver$(EXE) \
+	  test/stat_driver$(EXE) test/sha1_driver$(EXE) \
+	  test/kernel_driver$(EXE) test/aes_calc$(EXE) test/rand_gen$(EXE) \
+	  test/env$(EXE)
+
+# data values used to test the aes_calc application
+
+k=000102030405060708090a0b0c0d0e0f
+p=00112233445566778899aabbccddeeff
+c=69c4e0d86a7b0430d8cdb78070b4c55a
+
+runtest: libcryptomodule.a $(testapp)
+	test/env$(EXE) # print out information on the build environment
+	@echo "running libcryptomodule test applications..."
+	test `test/aes_calc $k $p` = $c
+	test/cipher_driver$(EXE) -v >/dev/null
+	test/datatypes_driver$(EXE) -v >/dev/null
+	test/stat_driver$(EXE) >/dev/null
+	test/sha1_driver$(EXE) -v >/dev/null
+	test/kernel_driver$(EXE) -v >/dev/null
+	test/rand_gen$(EXE) -n 256 >/dev/null
+	@echo "libcryptomodule test applications passed."
+
+# libcryptomodule.a (the crypto engine) 
+
+ciphers = cipher/cipher.o cipher/null_cipher.o      \
+          cipher/aes.o cipher/aes_icm.o             \
+          cipher/aes_cbc.o
+
+hashes  = hash/null_auth.o hash/sha1.o \
+          hash/hmac.o hash/auth.o
+
+math    = math/datatypes.o math/stat.o
+
+rng     = rng/$(RNG_OBJS) rng/rand_source.o rng/prng.o rng/ctr_prng.o
+
+err     = kernel/err.o
+
+kernel  = kernel/crypto_kernel.o  kernel/alloc.o   \
+          kernel/key.o $(rng) $(err)
+
+xfm     = ae_xfm/xfm.o
+
+cryptobj =  $(ciphers) $(hashes) $(math) $(stat) $(kernel) $(xfm)
+
+# the rule for making object files and test apps
+
+%.o: %.c
+	$(COMPILE) -c $< -o $@
+
+%$(EXE): %.c libcryptomodule.a 
+	$(COMPILE) $(LDFLAGS) $< -o $@ $(CRYPTOLIB) $(LIBS)
+
+ifndef AR
+  AR=ar
+endif
+
+# and the crypto module library itself
+
+libcryptomodule.a: $(cryptobj) 
+	$(AR) cr libcryptomodule.a $(cryptobj) 
+	$(RANLIB) libcryptomodule.a
+
+all: libcryptomodule.a $(testapp)
+
+# housekeeping functions
+
+clean:
+	rm -f libcryptomodule.a
+	rm -f $(testapp) *.o */*.o 
+	for a in * .* */*; do if [ -f "$$a~" ] ; then rm $$a~; fi; done;
+	rm -f `find . -name "*.[ch]~*~"`
+	rm -rf latex
+
+superclean: clean
+	rm -f *core TAGS ktrace.out
+
+
+# the target 'package' builds a compressed tar archive of the source code
+
+distname = crypto-$(shell cat VERSION)
+
+package: superclean
+	cd ..; tar cvzf $(distname).tgz crypto/
+
+
+# EOF
diff --git a/crypto/Makefile.in b/crypto/Makefile.in
new file mode 100644
index 0000000..c14dba5
--- /dev/null
+++ b/crypto/Makefile.in
@@ -0,0 +1,130 @@
+# Makefile for libcryptomodule.a
+#
+# David A. McGrew
+# Cisco Systems, Inc.
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+top_builddir = @top_builddir@
+VPATH = @srcdir@
+
+CC	= @CC@
+INCDIR	= -Iinclude -I$(srcdir)/include
+DEFS	= @DEFS@
+CPPFLAGS= @CPPFLAGS@
+CFLAGS	= @CFLAGS@
+LIBS	= @LIBS@
+LDFLAGS	= @LDFLAGS@ -L.
+COMPILE = $(CC) $(DEFS) $(INCDIR) $(CPPFLAGS) $(CFLAGS)
+CRYPTOLIB = -lcryptomodule
+
+RANLIB	= @RANLIB@
+
+# EXE defines the suffix on executables - it's .exe for cygwin, and
+# null on linux, bsd, and OS X and other OSes.  we define this so that
+# `make clean` will work on the cygwin platform
+EXE = @EXE@
+# Random source.
+RNG_OBJS = @RNG_OBJS@
+
+ifdef ARCH
+  DEFS += -D$(ARCH)=1
+endif
+
+ifdef sysname
+  DEFS += -D$(sysname)=1
+endif
+
+.PHONY: dummy all runtest clean superclean
+
+dummy : all runtest 
+
+# test applications 
+
+testapp = test/cipher_driver$(EXE) test/datatypes_driver$(EXE) \
+	  test/stat_driver$(EXE) test/sha1_driver$(EXE) \
+	  test/kernel_driver$(EXE) test/aes_calc$(EXE) test/rand_gen$(EXE) \
+	  test/env$(EXE)
+
+# data values used to test the aes_calc application
+
+k=000102030405060708090a0b0c0d0e0f
+p=00112233445566778899aabbccddeeff
+c=69c4e0d86a7b0430d8cdb78070b4c55a
+
+runtest: libcryptomodule.a $(testapp)
+	test/env$(EXE) # print out information on the build environment
+	@echo "running libcryptomodule test applications..."
+	test `test/aes_calc $k $p` = $c
+	test/cipher_driver$(EXE) -v >/dev/null
+	test/datatypes_driver$(EXE) -v >/dev/null
+	test/stat_driver$(EXE) >/dev/null
+	test/sha1_driver$(EXE) -v >/dev/null
+	test/kernel_driver$(EXE) -v >/dev/null
+	test/rand_gen$(EXE) -n 256 >/dev/null
+	@echo "libcryptomodule test applications passed."
+
+# libcryptomodule.a (the crypto engine) 
+
+ciphers = cipher/cipher.o cipher/null_cipher.o      \
+          cipher/aes.o cipher/aes_icm.o             \
+          cipher/aes_cbc.o
+
+hashes  = hash/null_auth.o hash/sha1.o \
+          hash/hmac.o hash/auth.o
+
+math    = math/datatypes.o math/stat.o
+
+rng     = rng/$(RNG_OBJS) rng/rand_source.o rng/prng.o rng/ctr_prng.o
+
+err     = kernel/err.o
+
+kernel  = kernel/crypto_kernel.o  kernel/alloc.o   \
+          kernel/key.o $(rng) $(err)
+
+xfm     = ae_xfm/xfm.o
+
+cryptobj =  $(ciphers) $(hashes) $(math) $(stat) $(kernel) $(xfm)
+
+# the rule for making object files and test apps
+
+%.o: %.c
+	$(COMPILE) -c $< -o $@
+
+%$(EXE): %.c libcryptomodule.a 
+	$(COMPILE) $(LDFLAGS) $< -o $@ $(CRYPTOLIB) $(LIBS)
+
+ifndef AR
+  AR=ar
+endif
+
+# and the crypto module library itself
+
+libcryptomodule.a: $(cryptobj) 
+	$(AR) cr libcryptomodule.a $(cryptobj) 
+	$(RANLIB) libcryptomodule.a
+
+all: libcryptomodule.a $(testapp)
+
+# housekeeping functions
+
+clean:
+	rm -f libcryptomodule.a
+	rm -f $(testapp) *.o */*.o 
+	for a in * .* */*; do if [ -f "$$a~" ] ; then rm $$a~; fi; done;
+	rm -f `find . -name "*.[ch]~*~"`
+	rm -rf latex
+
+superclean: clean
+	rm -f *core TAGS ktrace.out
+
+
+# the target 'package' builds a compressed tar archive of the source code
+
+distname = crypto-$(shell cat VERSION)
+
+package: superclean
+	cd ..; tar cvzf $(distname).tgz crypto/
+
+
+# EOF
diff --git a/crypto/VERSION b/crypto/VERSION
new file mode 100644
index 0000000..3eefcb9
--- /dev/null
+++ b/crypto/VERSION
@@ -0,0 +1 @@
+1.0.0
diff --git a/crypto/ae_xfm/xfm.c b/crypto/ae_xfm/xfm.c
new file mode 100644
index 0000000..4765b0a
--- /dev/null
+++ b/crypto/ae_xfm/xfm.c
@@ -0,0 +1,571 @@
+/*
+ * xfm.c
+ *
+ * Crypto transform implementation
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+#include "cryptoalg.h"
+#include "aes_cbc.h"
+#include "hmac.h"
+#include "crypto_kernel.h"   /* for crypto_get_random() */
+
+#define KEY_LEN     16
+#define ENC_KEY_LEN 16
+#define MAC_KEY_LEN 16
+#define IV_LEN      16
+#define TAG_LEN     12
+#define MAX_EXPAND  27
+
+err_status_t
+aes_128_cbc_hmac_sha1_96_func(void *key,            
+			      void *clear,          
+			      unsigned clear_len,       
+			      void *iv,             
+			      void *opaque,         
+			      unsigned *opaque_len, 
+			      void *auth_tag) {
+  aes_cbc_ctx_t aes_ctx;
+  hmac_ctx_t hmac_ctx;
+  unsigned char enc_key[ENC_KEY_LEN];
+  unsigned char mac_key[MAC_KEY_LEN];
+  err_status_t status;
+
+  /* check if we're doing authentication only */
+  if ((iv == NULL) && (opaque == NULL) && (opaque_len == NULL)) {
+      
+      /* perform authentication only */
+
+  } else if ((iv == NULL) || (opaque == NULL) || (opaque_len == NULL)) {
+    
+    /*
+     * bad parameter - we expect either all three pointers to be NULL,
+     * or none of those pointers to be NULL 
+     */
+    return err_status_fail;
+
+  } else {
+
+    /* derive encryption and authentication keys from the input key */
+    status = hmac_init(&hmac_ctx, key, KEY_LEN);
+    if (status) return status;
+    status = hmac_compute(&hmac_ctx, "ENC", 3, ENC_KEY_LEN, enc_key);
+    if (status) return status;
+
+    status = hmac_init(&hmac_ctx, key, KEY_LEN);
+    if (status) return status;
+    status = hmac_compute(&hmac_ctx, "MAC", 3, MAC_KEY_LEN, mac_key);
+    if (status) return status;
+
+
+    /* perform encryption and authentication */
+
+    /* set aes key */
+    status = aes_cbc_context_init(&aes_ctx, key, direction_encrypt);
+    if (status) return status;
+
+    /* set iv */
+    status = crypto_get_random(iv, IV_LEN);  
+    if (status) return status; 
+    status = aes_cbc_set_iv(&aes_ctx, iv);
+    
+    /* encrypt the opaque data  */
+    status = aes_cbc_nist_encrypt(&aes_ctx, opaque, opaque_len);
+    if (status) return status;
+
+    /* authenticate clear and opaque data */
+    status = hmac_init(&hmac_ctx, mac_key, MAC_KEY_LEN);
+    if (status) return status;
+
+    status = hmac_start(&hmac_ctx);
+    if (status) return status;
+
+    status = hmac_update(&hmac_ctx, clear, clear_len);
+    if (status) return status;
+
+    status = hmac_compute(&hmac_ctx, opaque, *opaque_len, TAG_LEN, auth_tag);
+    if (status) return status;
+
+  }
+
+  return err_status_ok;
+}
+
+err_status_t
+aes_128_cbc_hmac_sha1_96_inv(void *key,            
+			     void *clear,          
+			     unsigned clear_len,       
+			     void *iv,             
+			     void *opaque,         
+			     unsigned *opaque_len, 
+			     void *auth_tag) {
+  aes_cbc_ctx_t aes_ctx;
+  hmac_ctx_t hmac_ctx;
+  unsigned char enc_key[ENC_KEY_LEN];
+  unsigned char mac_key[MAC_KEY_LEN];
+  unsigned char tmp_tag[TAG_LEN];
+  unsigned char *tag = auth_tag;
+  err_status_t status;
+  int i;
+  
+  /* check if we're doing authentication only */
+  if ((iv == NULL) && (opaque == NULL) && (opaque_len == NULL)) {
+      
+      /* perform authentication only */
+
+  } else if ((iv == NULL) || (opaque == NULL) || (opaque_len == NULL)) {
+    
+    /*
+     * bad parameter - we expect either all three pointers to be NULL,
+     * or none of those pointers to be NULL 
+     */
+    return err_status_fail;
+
+  } else {
+
+    /* derive encryption and authentication keys from the input key */
+    status = hmac_init(&hmac_ctx, key, KEY_LEN);
+    if (status) return status;
+    status = hmac_compute(&hmac_ctx, "ENC", 3, ENC_KEY_LEN, enc_key);
+    if (status) return status;
+
+    status = hmac_init(&hmac_ctx, key, KEY_LEN);
+    if (status) return status;
+    status = hmac_compute(&hmac_ctx, "MAC", 3, MAC_KEY_LEN, mac_key);
+    if (status) return status;
+
+    /* perform encryption and authentication */
+
+    /* set aes key */
+    status = aes_cbc_context_init(&aes_ctx, key, direction_decrypt);
+    if (status) return status;
+
+    /* set iv */
+    status = rand_source_get_octet_string(iv, IV_LEN);  
+    if (status) return status; 
+    status = aes_cbc_set_iv(&aes_ctx, iv);
+    
+    /* encrypt the opaque data  */
+    status = aes_cbc_nist_decrypt(&aes_ctx, opaque, opaque_len);
+    if (status) return status;
+
+    /* authenticate clear and opaque data */
+    status = hmac_init(&hmac_ctx, mac_key, MAC_KEY_LEN);
+    if (status) return status;
+
+    status = hmac_start(&hmac_ctx);
+    if (status) return status;
+
+    status = hmac_update(&hmac_ctx, clear, clear_len);
+    if (status) return status;
+
+    status = hmac_compute(&hmac_ctx, opaque, *opaque_len, TAG_LEN, tmp_tag);
+    if (status) return status;
+
+    /* compare the computed tag with the one provided as input */
+    for (i=0; i < TAG_LEN; i++)
+      if (tmp_tag[i] != tag[i]) 
+	return err_status_auth_fail; 
+
+  }
+
+  return err_status_ok;
+}
+
+
+#define ENC 1
+
+#undef DEBUG
+#define DEBUG 0
+
+err_status_t
+aes_128_cbc_hmac_sha1_96_enc(void *key,            
+			     const void *clear,          
+			     unsigned clear_len,       
+			     void *iv,             
+			     void *opaque,         
+			     unsigned *opaque_len) {
+  aes_cbc_ctx_t aes_ctx;
+  hmac_ctx_t hmac_ctx;
+  unsigned char enc_key[ENC_KEY_LEN];
+  unsigned char mac_key[MAC_KEY_LEN];
+  unsigned char *auth_tag;
+  err_status_t status;
+
+  /* check if we're doing authentication only */
+  if ((iv == NULL) && (opaque == NULL) && (opaque_len == NULL)) {
+      
+      /* perform authentication only */
+
+  } else if ((iv == NULL) || (opaque == NULL) || (opaque_len == NULL)) {
+    
+    /*
+     * bad parameter - we expect either all three pointers to be NULL,
+     * or none of those pointers to be NULL 
+     */
+    return err_status_fail;
+
+  } else {
+
+#if DEBUG
+    printf("ENC using key %s\n", octet_string_hex_string(key, KEY_LEN));
+#endif
+
+    /* derive encryption and authentication keys from the input key */
+    status = hmac_init(&hmac_ctx, key, KEY_LEN);
+    if (status) return status;
+    status = hmac_compute(&hmac_ctx, "ENC", 3, ENC_KEY_LEN, enc_key);
+    if (status) return status;
+
+    status = hmac_init(&hmac_ctx, key, KEY_LEN);
+    if (status) return status;
+    status = hmac_compute(&hmac_ctx, "MAC", 3, MAC_KEY_LEN, mac_key);
+    if (status) return status;
+
+
+    /* perform encryption and authentication */
+
+    /* set aes key */
+    status = aes_cbc_context_init(&aes_ctx, key, direction_encrypt);
+    if (status) return status;
+
+    /* set iv */
+    status = rand_source_get_octet_string(iv, IV_LEN);  
+    if (status) return status; 
+    status = aes_cbc_set_iv(&aes_ctx, iv);
+    if (status) return status;
+
+#if DEBUG
+    printf("plaintext len:  %d\n", *opaque_len);
+    printf("iv:         %s\n", octet_string_hex_string(iv, IV_LEN));
+    printf("plaintext:  %s\n", octet_string_hex_string(opaque, *opaque_len));
+#endif
+
+#if ENC    
+    /* encrypt the opaque data  */
+    status = aes_cbc_nist_encrypt(&aes_ctx, opaque, opaque_len);
+    if (status) return status;
+#endif
+
+#if DEBUG
+    printf("ciphertext len: %d\n", *opaque_len);
+    printf("ciphertext: %s\n", octet_string_hex_string(opaque, *opaque_len));
+#endif
+
+    /*
+     * authenticate clear and opaque data, then write the
+     * authentication tag to the location immediately following the
+     * ciphertext
+     */
+    status = hmac_init(&hmac_ctx, mac_key, MAC_KEY_LEN);
+    if (status) return status;
+
+    status = hmac_start(&hmac_ctx);
+    if (status) return status;
+
+    status = hmac_update(&hmac_ctx, clear, clear_len);
+    if (status) return status;
+#if DEBUG
+    printf("hmac input: %s\n", 
+	   octet_string_hex_string(clear, clear_len));
+#endif
+    auth_tag = (unsigned char *)opaque;
+    auth_tag += *opaque_len;    
+    status = hmac_compute(&hmac_ctx, opaque, *opaque_len, TAG_LEN, auth_tag);
+    if (status) return status;
+#if DEBUG
+    printf("hmac input: %s\n", 
+	   octet_string_hex_string(opaque, *opaque_len));
+#endif
+    /* bump up the opaque_len to reflect the authentication tag */
+    *opaque_len += TAG_LEN;
+
+#if DEBUG
+    printf("prot data len:  %d\n", *opaque_len);
+    printf("prot data: %s\n", octet_string_hex_string(opaque, *opaque_len));
+#endif
+  }
+
+  return err_status_ok;
+}
+
+err_status_t
+aes_128_cbc_hmac_sha1_96_dec(void *key,            
+			     const void *clear,          
+			     unsigned clear_len,       
+			     void *iv,             
+			     void *opaque,         
+			     unsigned *opaque_len) {
+  aes_cbc_ctx_t aes_ctx;
+  hmac_ctx_t hmac_ctx;
+  unsigned char enc_key[ENC_KEY_LEN];
+  unsigned char mac_key[MAC_KEY_LEN];
+  unsigned char tmp_tag[TAG_LEN];
+  unsigned char *auth_tag;
+  unsigned ciphertext_len;
+  err_status_t status;
+  int i;
+  
+  /* check if we're doing authentication only */
+  if ((iv == NULL) && (opaque == NULL) && (opaque_len == NULL)) {
+      
+      /* perform authentication only */
+
+  } else if ((iv == NULL) || (opaque == NULL) || (opaque_len == NULL)) {
+    
+    /*
+     * bad parameter - we expect either all three pointers to be NULL,
+     * or none of those pointers to be NULL 
+     */
+    return err_status_fail;
+
+  } else {
+#if DEBUG
+    printf("DEC using key %s\n", octet_string_hex_string(key, KEY_LEN));
+#endif
+
+    /* derive encryption and authentication keys from the input key */
+    status = hmac_init(&hmac_ctx, key, KEY_LEN);
+    if (status) return status;
+    status = hmac_compute(&hmac_ctx, "ENC", 3, ENC_KEY_LEN, enc_key);
+    if (status) return status;
+
+    status = hmac_init(&hmac_ctx, key, KEY_LEN);
+    if (status) return status;
+    status = hmac_compute(&hmac_ctx, "MAC", 3, MAC_KEY_LEN, mac_key);
+    if (status) return status;
+
+#if DEBUG
+    printf("prot data len:  %d\n", *opaque_len);
+    printf("prot data: %s\n", octet_string_hex_string(opaque, *opaque_len));
+#endif
+
+    /* 
+     * set the protected data length to that of the ciphertext, by
+     * subtracting out the length of the authentication tag 
+     */
+    ciphertext_len = *opaque_len - TAG_LEN;
+
+#if DEBUG
+    printf("ciphertext len: %d\n", ciphertext_len);
+#endif    
+    /* verify the authentication tag */
+
+    /* 
+     * compute the authentication tag for the clear and opaque data,
+     * and write it to a temporary location
+     */
+    status = hmac_init(&hmac_ctx, mac_key, MAC_KEY_LEN);
+    if (status) return status;
+
+    status = hmac_start(&hmac_ctx);
+    if (status) return status;
+
+    status = hmac_update(&hmac_ctx, clear, clear_len);
+    if (status) return status;
+
+#if DEBUG
+    printf("hmac input: %s\n", 
+	   octet_string_hex_string(clear, clear_len));
+#endif
+
+    status = hmac_compute(&hmac_ctx, opaque, ciphertext_len, TAG_LEN, tmp_tag);
+    if (status) return status;
+
+#if DEBUG
+    printf("hmac input: %s\n", 
+	   octet_string_hex_string(opaque, ciphertext_len));
+#endif
+
+    /* 
+     * compare the computed tag with the one provided as input (which
+     * immediately follows the ciphertext)
+     */
+    auth_tag = (unsigned char *)opaque;
+    auth_tag += ciphertext_len;  
+#if DEBUG
+    printf("auth_tag: %s\n", octet_string_hex_string(auth_tag, TAG_LEN));
+    printf("tmp_tag:  %s\n", octet_string_hex_string(tmp_tag, TAG_LEN));
+#endif
+    for (i=0; i < TAG_LEN; i++) {
+      if (tmp_tag[i] != auth_tag[i]) 
+	return err_status_auth_fail; 
+    }
+
+    /* bump down the opaque_len to reflect the authentication tag */
+    *opaque_len -= TAG_LEN;
+
+    /* decrypt the confidential data */
+    status = aes_cbc_context_init(&aes_ctx, key, direction_decrypt);
+    if (status) return status;
+    status = aes_cbc_set_iv(&aes_ctx, iv);
+    if (status) return status;
+
+#if DEBUG
+    printf("ciphertext: %s\n", octet_string_hex_string(opaque, *opaque_len));
+    printf("iv:         %s\n", octet_string_hex_string(iv, IV_LEN));
+#endif
+
+#if ENC
+    status = aes_cbc_nist_decrypt(&aes_ctx, opaque, &ciphertext_len);
+    if (status) return status;
+#endif
+
+#if DEBUG
+    printf("plaintext len:  %d\n", ciphertext_len);
+    printf("plaintext:  %s\n", 
+	   octet_string_hex_string(opaque, ciphertext_len));
+#endif
+
+    /* indicate the length of the plaintext  */
+    *opaque_len = ciphertext_len;
+  }
+
+  return err_status_ok;
+}
+
+cryptoalg_ctx_t cryptoalg_ctx = {
+  aes_128_cbc_hmac_sha1_96_enc,
+  aes_128_cbc_hmac_sha1_96_dec,
+  KEY_LEN,
+  IV_LEN,
+  TAG_LEN,
+  MAX_EXPAND,
+};
+
+cryptoalg_t cryptoalg = &cryptoalg_ctx;
+
+#define NULL_TAG_LEN 12
+
+err_status_t
+null_enc(void *key,            
+	 const void *clear,          
+	 unsigned clear_len,       
+	 void *iv,             
+	 void *opaque,         
+	 unsigned *opaque_len) {
+  int i;
+  unsigned char *auth_tag;
+  unsigned char *init_vec = iv;
+
+  /* check if we're doing authentication only */
+  if ((iv == NULL) && (opaque == NULL) && (opaque_len == NULL)) {
+      
+      /* perform authentication only */
+
+  } else if ((iv == NULL) || (opaque == NULL) || (opaque_len == NULL)) {
+    
+    /*
+     * bad parameter - we expect either all three pointers to be NULL,
+     * or none of those pointers to be NULL 
+     */
+    return err_status_fail;
+
+  } else {
+
+#if DEBUG
+    printf("NULL ENC using key %s\n", octet_string_hex_string(key, KEY_LEN));
+    printf("NULL_TAG_LEN:  %d\n", NULL_TAG_LEN);
+    printf("plaintext len:  %d\n", *opaque_len);
+#endif
+    for (i=0; i < IV_LEN; i++)
+      init_vec[i] = i + (i * 16);
+#if DEBUG
+    printf("iv:                %s\n", 
+	   octet_string_hex_string(iv, IV_LEN));
+    printf("plaintext:         %s\n", 
+	   octet_string_hex_string(opaque, *opaque_len));
+#endif
+    auth_tag = opaque;
+    auth_tag += *opaque_len;
+    for (i=0; i < NULL_TAG_LEN; i++)
+      auth_tag[i] = i + (i * 16);
+    *opaque_len += NULL_TAG_LEN;
+#if DEBUG
+    printf("protected data len: %d\n", *opaque_len);
+    printf("protected data:    %s\n", 
+	   octet_string_hex_string(opaque, *opaque_len));
+#endif
+
+  }
+
+  return err_status_ok;
+}
+
+err_status_t
+null_dec(void *key,            
+	 const void *clear,          
+	 unsigned clear_len,       
+	 void *iv,             
+	 void *opaque,         
+	 unsigned *opaque_len) {
+  unsigned char *auth_tag;
+  
+  /* check if we're doing authentication only */
+  if ((iv == NULL) && (opaque == NULL) && (opaque_len == NULL)) {
+      
+      /* perform authentication only */
+
+  } else if ((iv == NULL) || (opaque == NULL) || (opaque_len == NULL)) {
+    
+    /*
+     * bad parameter - we expect either all three pointers to be NULL,
+     * or none of those pointers to be NULL 
+     */
+    return err_status_fail;
+
+  } else {
+
+#if DEBUG
+    printf("NULL DEC using key %s\n", octet_string_hex_string(key, KEY_LEN));
+
+    printf("protected data len: %d\n", *opaque_len);
+    printf("protected data:    %s\n", 
+	   octet_string_hex_string(opaque, *opaque_len));
+#endif
+    auth_tag = opaque;
+    auth_tag += (*opaque_len - NULL_TAG_LEN);
+#if DEBUG
+    printf("iv:         %s\n", octet_string_hex_string(iv, IV_LEN));
+#endif
+    *opaque_len -= NULL_TAG_LEN;
+#if DEBUG
+    printf("plaintext len:  %d\n", *opaque_len);
+    printf("plaintext:  %s\n", 
+	   octet_string_hex_string(opaque, *opaque_len));
+#endif
+  }
+
+  return err_status_ok;
+}
+
+cryptoalg_ctx_t null_cryptoalg_ctx = {
+  null_enc,
+  null_dec,
+  KEY_LEN,
+  IV_LEN,
+  NULL_TAG_LEN,
+  MAX_EXPAND,
+};
+
+cryptoalg_t null_cryptoalg = &null_cryptoalg_ctx;
+
+int
+cryptoalg_get_id(cryptoalg_t c) {
+  if (c == cryptoalg)
+    return 1;
+  return 0;
+}
+
+cryptoalg_t 
+cryptoalg_find_by_id(int id) {
+  switch(id) {
+  case 1:
+    return cryptoalg;
+  default:
+    break;
+  }
+  return 0;
+}
diff --git a/crypto/cipher/aes.c b/crypto/cipher/aes.c
new file mode 100644
index 0000000..f1286c3
--- /dev/null
+++ b/crypto/cipher/aes.c
@@ -0,0 +1,1951 @@
+/*
+ * aes.c
+ *
+ * An implemnetation of the AES block cipher.
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "aes.h"
+#include "err.h"
+
+/* 
+ * we use the tables T0, T1, T2, T3, and T4 to compute AES, and 
+ * the tables U0, U1, U2, and U4 to compute its inverse
+ *
+ * different tables are used on little-endian (Intel, VMS) and
+ * big-endian processors (everything else)
+ *
+ * these tables are computed using the program tables/aes_tables; use
+ * this program to generate different tables for porting or
+ * optimization on a different platform
+ */
+
+#ifndef WORDS_BIGENDIAN
+
+static uint32_t T0[256] = {
+  0xa56363c6, 0x847c7cf8, 0x997777ee, 0x8d7b7bf6, 
+  0xdf2f2ff, 0xbd6b6bd6, 0xb16f6fde, 0x54c5c591, 
+  0x50303060, 0x3010102, 0xa96767ce, 0x7d2b2b56, 
+  0x19fefee7, 0x62d7d7b5, 0xe6abab4d, 0x9a7676ec, 
+  0x45caca8f, 0x9d82821f, 0x40c9c989, 0x877d7dfa, 
+  0x15fafaef, 0xeb5959b2, 0xc947478e, 0xbf0f0fb, 
+  0xecadad41, 0x67d4d4b3, 0xfda2a25f, 0xeaafaf45, 
+  0xbf9c9c23, 0xf7a4a453, 0x967272e4, 0x5bc0c09b, 
+  0xc2b7b775, 0x1cfdfde1, 0xae93933d, 0x6a26264c, 
+  0x5a36366c, 0x413f3f7e, 0x2f7f7f5, 0x4fcccc83, 
+  0x5c343468, 0xf4a5a551, 0x34e5e5d1, 0x8f1f1f9, 
+  0x937171e2, 0x73d8d8ab, 0x53313162, 0x3f15152a, 
+  0xc040408, 0x52c7c795, 0x65232346, 0x5ec3c39d, 
+  0x28181830, 0xa1969637, 0xf05050a, 0xb59a9a2f, 
+  0x907070e, 0x36121224, 0x9b80801b, 0x3de2e2df, 
+  0x26ebebcd, 0x6927274e, 0xcdb2b27f, 0x9f7575ea, 
+  0x1b090912, 0x9e83831d, 0x742c2c58, 0x2e1a1a34, 
+  0x2d1b1b36, 0xb26e6edc, 0xee5a5ab4, 0xfba0a05b, 
+  0xf65252a4, 0x4d3b3b76, 0x61d6d6b7, 0xceb3b37d, 
+  0x7b292952, 0x3ee3e3dd, 0x712f2f5e, 0x97848413, 
+  0xf55353a6, 0x68d1d1b9, 0x0, 0x2cededc1, 
+  0x60202040, 0x1ffcfce3, 0xc8b1b179, 0xed5b5bb6, 
+  0xbe6a6ad4, 0x46cbcb8d, 0xd9bebe67, 0x4b393972, 
+  0xde4a4a94, 0xd44c4c98, 0xe85858b0, 0x4acfcf85, 
+  0x6bd0d0bb, 0x2aefefc5, 0xe5aaaa4f, 0x16fbfbed, 
+  0xc5434386, 0xd74d4d9a, 0x55333366, 0x94858511, 
+  0xcf45458a, 0x10f9f9e9, 0x6020204, 0x817f7ffe, 
+  0xf05050a0, 0x443c3c78, 0xba9f9f25, 0xe3a8a84b, 
+  0xf35151a2, 0xfea3a35d, 0xc0404080, 0x8a8f8f05, 
+  0xad92923f, 0xbc9d9d21, 0x48383870, 0x4f5f5f1, 
+  0xdfbcbc63, 0xc1b6b677, 0x75dadaaf, 0x63212142, 
+  0x30101020, 0x1affffe5, 0xef3f3fd, 0x6dd2d2bf, 
+  0x4ccdcd81, 0x140c0c18, 0x35131326, 0x2fececc3, 
+  0xe15f5fbe, 0xa2979735, 0xcc444488, 0x3917172e, 
+  0x57c4c493, 0xf2a7a755, 0x827e7efc, 0x473d3d7a, 
+  0xac6464c8, 0xe75d5dba, 0x2b191932, 0x957373e6, 
+  0xa06060c0, 0x98818119, 0xd14f4f9e, 0x7fdcdca3, 
+  0x66222244, 0x7e2a2a54, 0xab90903b, 0x8388880b, 
+  0xca46468c, 0x29eeeec7, 0xd3b8b86b, 0x3c141428, 
+  0x79dedea7, 0xe25e5ebc, 0x1d0b0b16, 0x76dbdbad, 
+  0x3be0e0db, 0x56323264, 0x4e3a3a74, 0x1e0a0a14, 
+  0xdb494992, 0xa06060c, 0x6c242448, 0xe45c5cb8, 
+  0x5dc2c29f, 0x6ed3d3bd, 0xefacac43, 0xa66262c4, 
+  0xa8919139, 0xa4959531, 0x37e4e4d3, 0x8b7979f2, 
+  0x32e7e7d5, 0x43c8c88b, 0x5937376e, 0xb76d6dda, 
+  0x8c8d8d01, 0x64d5d5b1, 0xd24e4e9c, 0xe0a9a949, 
+  0xb46c6cd8, 0xfa5656ac, 0x7f4f4f3, 0x25eaeacf, 
+  0xaf6565ca, 0x8e7a7af4, 0xe9aeae47, 0x18080810, 
+  0xd5baba6f, 0x887878f0, 0x6f25254a, 0x722e2e5c, 
+  0x241c1c38, 0xf1a6a657, 0xc7b4b473, 0x51c6c697, 
+  0x23e8e8cb, 0x7cdddda1, 0x9c7474e8, 0x211f1f3e, 
+  0xdd4b4b96, 0xdcbdbd61, 0x868b8b0d, 0x858a8a0f, 
+  0x907070e0, 0x423e3e7c, 0xc4b5b571, 0xaa6666cc, 
+  0xd8484890, 0x5030306, 0x1f6f6f7, 0x120e0e1c, 
+  0xa36161c2, 0x5f35356a, 0xf95757ae, 0xd0b9b969, 
+  0x91868617, 0x58c1c199, 0x271d1d3a, 0xb99e9e27, 
+  0x38e1e1d9, 0x13f8f8eb, 0xb398982b, 0x33111122, 
+  0xbb6969d2, 0x70d9d9a9, 0x898e8e07, 0xa7949433, 
+  0xb69b9b2d, 0x221e1e3c, 0x92878715, 0x20e9e9c9, 
+  0x49cece87, 0xff5555aa, 0x78282850, 0x7adfdfa5, 
+  0x8f8c8c03, 0xf8a1a159, 0x80898909, 0x170d0d1a, 
+  0xdabfbf65, 0x31e6e6d7, 0xc6424284, 0xb86868d0, 
+  0xc3414182, 0xb0999929, 0x772d2d5a, 0x110f0f1e, 
+  0xcbb0b07b, 0xfc5454a8, 0xd6bbbb6d, 0x3a16162c, 
+};
+
+static uint32_t T1[256] = {
+  0x6363c6a5, 0x7c7cf884, 0x7777ee99, 0x7b7bf68d, 
+  0xf2f2ff0d, 0x6b6bd6bd, 0x6f6fdeb1, 0xc5c59154, 
+  0x30306050, 0x1010203, 0x6767cea9, 0x2b2b567d, 
+  0xfefee719, 0xd7d7b562, 0xabab4de6, 0x7676ec9a, 
+  0xcaca8f45, 0x82821f9d, 0xc9c98940, 0x7d7dfa87, 
+  0xfafaef15, 0x5959b2eb, 0x47478ec9, 0xf0f0fb0b, 
+  0xadad41ec, 0xd4d4b367, 0xa2a25ffd, 0xafaf45ea, 
+  0x9c9c23bf, 0xa4a453f7, 0x7272e496, 0xc0c09b5b, 
+  0xb7b775c2, 0xfdfde11c, 0x93933dae, 0x26264c6a, 
+  0x36366c5a, 0x3f3f7e41, 0xf7f7f502, 0xcccc834f, 
+  0x3434685c, 0xa5a551f4, 0xe5e5d134, 0xf1f1f908, 
+  0x7171e293, 0xd8d8ab73, 0x31316253, 0x15152a3f, 
+  0x404080c, 0xc7c79552, 0x23234665, 0xc3c39d5e, 
+  0x18183028, 0x969637a1, 0x5050a0f, 0x9a9a2fb5, 
+  0x7070e09, 0x12122436, 0x80801b9b, 0xe2e2df3d, 
+  0xebebcd26, 0x27274e69, 0xb2b27fcd, 0x7575ea9f, 
+  0x909121b, 0x83831d9e, 0x2c2c5874, 0x1a1a342e, 
+  0x1b1b362d, 0x6e6edcb2, 0x5a5ab4ee, 0xa0a05bfb, 
+  0x5252a4f6, 0x3b3b764d, 0xd6d6b761, 0xb3b37dce, 
+  0x2929527b, 0xe3e3dd3e, 0x2f2f5e71, 0x84841397, 
+  0x5353a6f5, 0xd1d1b968, 0x00000000, 0xededc12c, 
+  0x20204060, 0xfcfce31f, 0xb1b179c8, 0x5b5bb6ed, 
+  0x6a6ad4be, 0xcbcb8d46, 0xbebe67d9, 0x3939724b, 
+  0x4a4a94de, 0x4c4c98d4, 0x5858b0e8, 0xcfcf854a, 
+  0xd0d0bb6b, 0xefefc52a, 0xaaaa4fe5, 0xfbfbed16, 
+  0x434386c5, 0x4d4d9ad7, 0x33336655, 0x85851194, 
+  0x45458acf, 0xf9f9e910, 0x2020406, 0x7f7ffe81, 
+  0x5050a0f0, 0x3c3c7844, 0x9f9f25ba, 0xa8a84be3, 
+  0x5151a2f3, 0xa3a35dfe, 0x404080c0, 0x8f8f058a, 
+  0x92923fad, 0x9d9d21bc, 0x38387048, 0xf5f5f104, 
+  0xbcbc63df, 0xb6b677c1, 0xdadaaf75, 0x21214263, 
+  0x10102030, 0xffffe51a, 0xf3f3fd0e, 0xd2d2bf6d, 
+  0xcdcd814c, 0xc0c1814, 0x13132635, 0xececc32f, 
+  0x5f5fbee1, 0x979735a2, 0x444488cc, 0x17172e39, 
+  0xc4c49357, 0xa7a755f2, 0x7e7efc82, 0x3d3d7a47, 
+  0x6464c8ac, 0x5d5dbae7, 0x1919322b, 0x7373e695, 
+  0x6060c0a0, 0x81811998, 0x4f4f9ed1, 0xdcdca37f, 
+  0x22224466, 0x2a2a547e, 0x90903bab, 0x88880b83, 
+  0x46468cca, 0xeeeec729, 0xb8b86bd3, 0x1414283c, 
+  0xdedea779, 0x5e5ebce2, 0xb0b161d, 0xdbdbad76, 
+  0xe0e0db3b, 0x32326456, 0x3a3a744e, 0xa0a141e, 
+  0x494992db, 0x6060c0a, 0x2424486c, 0x5c5cb8e4, 
+  0xc2c29f5d, 0xd3d3bd6e, 0xacac43ef, 0x6262c4a6, 
+  0x919139a8, 0x959531a4, 0xe4e4d337, 0x7979f28b, 
+  0xe7e7d532, 0xc8c88b43, 0x37376e59, 0x6d6ddab7, 
+  0x8d8d018c, 0xd5d5b164, 0x4e4e9cd2, 0xa9a949e0, 
+  0x6c6cd8b4, 0x5656acfa, 0xf4f4f307, 0xeaeacf25, 
+  0x6565caaf, 0x7a7af48e, 0xaeae47e9, 0x8081018, 
+  0xbaba6fd5, 0x7878f088, 0x25254a6f, 0x2e2e5c72, 
+  0x1c1c3824, 0xa6a657f1, 0xb4b473c7, 0xc6c69751, 
+  0xe8e8cb23, 0xdddda17c, 0x7474e89c, 0x1f1f3e21, 
+  0x4b4b96dd, 0xbdbd61dc, 0x8b8b0d86, 0x8a8a0f85, 
+  0x7070e090, 0x3e3e7c42, 0xb5b571c4, 0x6666ccaa, 
+  0x484890d8, 0x3030605, 0xf6f6f701, 0xe0e1c12, 
+  0x6161c2a3, 0x35356a5f, 0x5757aef9, 0xb9b969d0, 
+  0x86861791, 0xc1c19958, 0x1d1d3a27, 0x9e9e27b9, 
+  0xe1e1d938, 0xf8f8eb13, 0x98982bb3, 0x11112233, 
+  0x6969d2bb, 0xd9d9a970, 0x8e8e0789, 0x949433a7, 
+  0x9b9b2db6, 0x1e1e3c22, 0x87871592, 0xe9e9c920, 
+  0xcece8749, 0x5555aaff, 0x28285078, 0xdfdfa57a, 
+  0x8c8c038f, 0xa1a159f8, 0x89890980, 0xd0d1a17, 
+  0xbfbf65da, 0xe6e6d731, 0x424284c6, 0x6868d0b8, 
+  0x414182c3, 0x999929b0, 0x2d2d5a77, 0xf0f1e11, 
+  0xb0b07bcb, 0x5454a8fc, 0xbbbb6dd6, 0x16162c3a, 
+};
+
+static uint32_t T2[256] = {
+  0x63c6a563, 0x7cf8847c, 0x77ee9977, 0x7bf68d7b, 
+  0xf2ff0df2, 0x6bd6bd6b, 0x6fdeb16f, 0xc59154c5, 
+  0x30605030, 0x1020301, 0x67cea967, 0x2b567d2b, 
+  0xfee719fe, 0xd7b562d7, 0xab4de6ab, 0x76ec9a76, 
+  0xca8f45ca, 0x821f9d82, 0xc98940c9, 0x7dfa877d, 
+  0xfaef15fa, 0x59b2eb59, 0x478ec947, 0xf0fb0bf0, 
+  0xad41ecad, 0xd4b367d4, 0xa25ffda2, 0xaf45eaaf, 
+  0x9c23bf9c, 0xa453f7a4, 0x72e49672, 0xc09b5bc0, 
+  0xb775c2b7, 0xfde11cfd, 0x933dae93, 0x264c6a26, 
+  0x366c5a36, 0x3f7e413f, 0xf7f502f7, 0xcc834fcc, 
+  0x34685c34, 0xa551f4a5, 0xe5d134e5, 0xf1f908f1, 
+  0x71e29371, 0xd8ab73d8, 0x31625331, 0x152a3f15, 
+  0x4080c04, 0xc79552c7, 0x23466523, 0xc39d5ec3, 
+  0x18302818, 0x9637a196, 0x50a0f05, 0x9a2fb59a, 
+  0x70e0907, 0x12243612, 0x801b9b80, 0xe2df3de2, 
+  0xebcd26eb, 0x274e6927, 0xb27fcdb2, 0x75ea9f75, 
+  0x9121b09, 0x831d9e83, 0x2c58742c, 0x1a342e1a, 
+  0x1b362d1b, 0x6edcb26e, 0x5ab4ee5a, 0xa05bfba0, 
+  0x52a4f652, 0x3b764d3b, 0xd6b761d6, 0xb37dceb3, 
+  0x29527b29, 0xe3dd3ee3, 0x2f5e712f, 0x84139784, 
+  0x53a6f553, 0xd1b968d1, 0x0, 0xedc12ced, 
+  0x20406020, 0xfce31ffc, 0xb179c8b1, 0x5bb6ed5b, 
+  0x6ad4be6a, 0xcb8d46cb, 0xbe67d9be, 0x39724b39, 
+  0x4a94de4a, 0x4c98d44c, 0x58b0e858, 0xcf854acf, 
+  0xd0bb6bd0, 0xefc52aef, 0xaa4fe5aa, 0xfbed16fb, 
+  0x4386c543, 0x4d9ad74d, 0x33665533, 0x85119485, 
+  0x458acf45, 0xf9e910f9, 0x2040602, 0x7ffe817f, 
+  0x50a0f050, 0x3c78443c, 0x9f25ba9f, 0xa84be3a8, 
+  0x51a2f351, 0xa35dfea3, 0x4080c040, 0x8f058a8f, 
+  0x923fad92, 0x9d21bc9d, 0x38704838, 0xf5f104f5, 
+  0xbc63dfbc, 0xb677c1b6, 0xdaaf75da, 0x21426321, 
+  0x10203010, 0xffe51aff, 0xf3fd0ef3, 0xd2bf6dd2, 
+  0xcd814ccd, 0xc18140c, 0x13263513, 0xecc32fec, 
+  0x5fbee15f, 0x9735a297, 0x4488cc44, 0x172e3917, 
+  0xc49357c4, 0xa755f2a7, 0x7efc827e, 0x3d7a473d, 
+  0x64c8ac64, 0x5dbae75d, 0x19322b19, 0x73e69573, 
+  0x60c0a060, 0x81199881, 0x4f9ed14f, 0xdca37fdc, 
+  0x22446622, 0x2a547e2a, 0x903bab90, 0x880b8388, 
+  0x468cca46, 0xeec729ee, 0xb86bd3b8, 0x14283c14, 
+  0xdea779de, 0x5ebce25e, 0xb161d0b, 0xdbad76db, 
+  0xe0db3be0, 0x32645632, 0x3a744e3a, 0xa141e0a, 
+  0x4992db49, 0x60c0a06, 0x24486c24, 0x5cb8e45c, 
+  0xc29f5dc2, 0xd3bd6ed3, 0xac43efac, 0x62c4a662, 
+  0x9139a891, 0x9531a495, 0xe4d337e4, 0x79f28b79, 
+  0xe7d532e7, 0xc88b43c8, 0x376e5937, 0x6ddab76d, 
+  0x8d018c8d, 0xd5b164d5, 0x4e9cd24e, 0xa949e0a9, 
+  0x6cd8b46c, 0x56acfa56, 0xf4f307f4, 0xeacf25ea, 
+  0x65caaf65, 0x7af48e7a, 0xae47e9ae, 0x8101808, 
+  0xba6fd5ba, 0x78f08878, 0x254a6f25, 0x2e5c722e, 
+  0x1c38241c, 0xa657f1a6, 0xb473c7b4, 0xc69751c6, 
+  0xe8cb23e8, 0xdda17cdd, 0x74e89c74, 0x1f3e211f, 
+  0x4b96dd4b, 0xbd61dcbd, 0x8b0d868b, 0x8a0f858a, 
+  0x70e09070, 0x3e7c423e, 0xb571c4b5, 0x66ccaa66, 
+  0x4890d848, 0x3060503, 0xf6f701f6, 0xe1c120e, 
+  0x61c2a361, 0x356a5f35, 0x57aef957, 0xb969d0b9, 
+  0x86179186, 0xc19958c1, 0x1d3a271d, 0x9e27b99e, 
+  0xe1d938e1, 0xf8eb13f8, 0x982bb398, 0x11223311, 
+  0x69d2bb69, 0xd9a970d9, 0x8e07898e, 0x9433a794, 
+  0x9b2db69b, 0x1e3c221e, 0x87159287, 0xe9c920e9, 
+  0xce8749ce, 0x55aaff55, 0x28507828, 0xdfa57adf, 
+  0x8c038f8c, 0xa159f8a1, 0x89098089, 0xd1a170d, 
+  0xbf65dabf, 0xe6d731e6, 0x4284c642, 0x68d0b868, 
+  0x4182c341, 0x9929b099, 0x2d5a772d, 0xf1e110f, 
+  0xb07bcbb0, 0x54a8fc54, 0xbb6dd6bb, 0x162c3a16, 
+};
+
+static uint32_t T3[256] = {
+  0xc6a56363, 0xf8847c7c, 0xee997777, 0xf68d7b7b, 
+  0xff0df2f2, 0xd6bd6b6b, 0xdeb16f6f, 0x9154c5c5, 
+  0x60503030, 0x2030101, 0xcea96767, 0x567d2b2b, 
+  0xe719fefe, 0xb562d7d7, 0x4de6abab, 0xec9a7676, 
+  0x8f45caca, 0x1f9d8282, 0x8940c9c9, 0xfa877d7d, 
+  0xef15fafa, 0xb2eb5959, 0x8ec94747, 0xfb0bf0f0, 
+  0x41ecadad, 0xb367d4d4, 0x5ffda2a2, 0x45eaafaf, 
+  0x23bf9c9c, 0x53f7a4a4, 0xe4967272, 0x9b5bc0c0, 
+  0x75c2b7b7, 0xe11cfdfd, 0x3dae9393, 0x4c6a2626, 
+  0x6c5a3636, 0x7e413f3f, 0xf502f7f7, 0x834fcccc, 
+  0x685c3434, 0x51f4a5a5, 0xd134e5e5, 0xf908f1f1, 
+  0xe2937171, 0xab73d8d8, 0x62533131, 0x2a3f1515, 
+  0x80c0404, 0x9552c7c7, 0x46652323, 0x9d5ec3c3, 
+  0x30281818, 0x37a19696, 0xa0f0505, 0x2fb59a9a, 
+  0xe090707, 0x24361212, 0x1b9b8080, 0xdf3de2e2, 
+  0xcd26ebeb, 0x4e692727, 0x7fcdb2b2, 0xea9f7575, 
+  0x121b0909, 0x1d9e8383, 0x58742c2c, 0x342e1a1a, 
+  0x362d1b1b, 0xdcb26e6e, 0xb4ee5a5a, 0x5bfba0a0, 
+  0xa4f65252, 0x764d3b3b, 0xb761d6d6, 0x7dceb3b3, 
+  0x527b2929, 0xdd3ee3e3, 0x5e712f2f, 0x13978484, 
+  0xa6f55353, 0xb968d1d1, 0x0, 0xc12ceded, 
+  0x40602020, 0xe31ffcfc, 0x79c8b1b1, 0xb6ed5b5b, 
+  0xd4be6a6a, 0x8d46cbcb, 0x67d9bebe, 0x724b3939, 
+  0x94de4a4a, 0x98d44c4c, 0xb0e85858, 0x854acfcf, 
+  0xbb6bd0d0, 0xc52aefef, 0x4fe5aaaa, 0xed16fbfb, 
+  0x86c54343, 0x9ad74d4d, 0x66553333, 0x11948585, 
+  0x8acf4545, 0xe910f9f9, 0x4060202, 0xfe817f7f, 
+  0xa0f05050, 0x78443c3c, 0x25ba9f9f, 0x4be3a8a8, 
+  0xa2f35151, 0x5dfea3a3, 0x80c04040, 0x58a8f8f, 
+  0x3fad9292, 0x21bc9d9d, 0x70483838, 0xf104f5f5, 
+  0x63dfbcbc, 0x77c1b6b6, 0xaf75dada, 0x42632121, 
+  0x20301010, 0xe51affff, 0xfd0ef3f3, 0xbf6dd2d2, 
+  0x814ccdcd, 0x18140c0c, 0x26351313, 0xc32fecec, 
+  0xbee15f5f, 0x35a29797, 0x88cc4444, 0x2e391717, 
+  0x9357c4c4, 0x55f2a7a7, 0xfc827e7e, 0x7a473d3d, 
+  0xc8ac6464, 0xbae75d5d, 0x322b1919, 0xe6957373, 
+  0xc0a06060, 0x19988181, 0x9ed14f4f, 0xa37fdcdc, 
+  0x44662222, 0x547e2a2a, 0x3bab9090, 0xb838888, 
+  0x8cca4646, 0xc729eeee, 0x6bd3b8b8, 0x283c1414, 
+  0xa779dede, 0xbce25e5e, 0x161d0b0b, 0xad76dbdb, 
+  0xdb3be0e0, 0x64563232, 0x744e3a3a, 0x141e0a0a, 
+  0x92db4949, 0xc0a0606, 0x486c2424, 0xb8e45c5c, 
+  0x9f5dc2c2, 0xbd6ed3d3, 0x43efacac, 0xc4a66262, 
+  0x39a89191, 0x31a49595, 0xd337e4e4, 0xf28b7979, 
+  0xd532e7e7, 0x8b43c8c8, 0x6e593737, 0xdab76d6d, 
+  0x18c8d8d, 0xb164d5d5, 0x9cd24e4e, 0x49e0a9a9, 
+  0xd8b46c6c, 0xacfa5656, 0xf307f4f4, 0xcf25eaea, 
+  0xcaaf6565, 0xf48e7a7a, 0x47e9aeae, 0x10180808, 
+  0x6fd5baba, 0xf0887878, 0x4a6f2525, 0x5c722e2e, 
+  0x38241c1c, 0x57f1a6a6, 0x73c7b4b4, 0x9751c6c6, 
+  0xcb23e8e8, 0xa17cdddd, 0xe89c7474, 0x3e211f1f, 
+  0x96dd4b4b, 0x61dcbdbd, 0xd868b8b, 0xf858a8a, 
+  0xe0907070, 0x7c423e3e, 0x71c4b5b5, 0xccaa6666, 
+  0x90d84848, 0x6050303, 0xf701f6f6, 0x1c120e0e, 
+  0xc2a36161, 0x6a5f3535, 0xaef95757, 0x69d0b9b9, 
+  0x17918686, 0x9958c1c1, 0x3a271d1d, 0x27b99e9e, 
+  0xd938e1e1, 0xeb13f8f8, 0x2bb39898, 0x22331111, 
+  0xd2bb6969, 0xa970d9d9, 0x7898e8e, 0x33a79494, 
+  0x2db69b9b, 0x3c221e1e, 0x15928787, 0xc920e9e9, 
+  0x8749cece, 0xaaff5555, 0x50782828, 0xa57adfdf, 
+  0x38f8c8c, 0x59f8a1a1, 0x9808989, 0x1a170d0d, 
+  0x65dabfbf, 0xd731e6e6, 0x84c64242, 0xd0b86868, 
+  0x82c34141, 0x29b09999, 0x5a772d2d, 0x1e110f0f, 
+  0x7bcbb0b0, 0xa8fc5454, 0x6dd6bbbb, 0x2c3a1616, 
+};
+
+static uint32_t U0[256] = {
+  0x50a7f451, 0x5365417e, 0xc3a4171a, 0x965e273a, 
+  0xcb6bab3b, 0xf1459d1f, 0xab58faac, 0x9303e34b, 
+  0x55fa3020, 0xf66d76ad, 0x9176cc88, 0x254c02f5, 
+  0xfcd7e54f, 0xd7cb2ac5, 0x80443526, 0x8fa362b5, 
+  0x495ab1de, 0x671bba25, 0x980eea45, 0xe1c0fe5d, 
+  0x2752fc3, 0x12f04c81, 0xa397468d, 0xc6f9d36b, 
+  0xe75f8f03, 0x959c9215, 0xeb7a6dbf, 0xda595295, 
+  0x2d83bed4, 0xd3217458, 0x2969e049, 0x44c8c98e, 
+  0x6a89c275, 0x78798ef4, 0x6b3e5899, 0xdd71b927, 
+  0xb64fe1be, 0x17ad88f0, 0x66ac20c9, 0xb43ace7d, 
+  0x184adf63, 0x82311ae5, 0x60335197, 0x457f5362, 
+  0xe07764b1, 0x84ae6bbb, 0x1ca081fe, 0x942b08f9, 
+  0x58684870, 0x19fd458f, 0x876cde94, 0xb7f87b52, 
+  0x23d373ab, 0xe2024b72, 0x578f1fe3, 0x2aab5566, 
+  0x728ebb2, 0x3c2b52f, 0x9a7bc586, 0xa50837d3, 
+  0xf2872830, 0xb2a5bf23, 0xba6a0302, 0x5c8216ed, 
+  0x2b1ccf8a, 0x92b479a7, 0xf0f207f3, 0xa1e2694e, 
+  0xcdf4da65, 0xd5be0506, 0x1f6234d1, 0x8afea6c4, 
+  0x9d532e34, 0xa055f3a2, 0x32e18a05, 0x75ebf6a4, 
+  0x39ec830b, 0xaaef6040, 0x69f715e, 0x51106ebd, 
+  0xf98a213e, 0x3d06dd96, 0xae053edd, 0x46bde64d, 
+  0xb58d5491, 0x55dc471, 0x6fd40604, 0xff155060, 
+  0x24fb9819, 0x97e9bdd6, 0xcc434089, 0x779ed967, 
+  0xbd42e8b0, 0x888b8907, 0x385b19e7, 0xdbeec879, 
+  0x470a7ca1, 0xe90f427c, 0xc91e84f8, 0x0, 
+  0x83868009, 0x48ed2b32, 0xac70111e, 0x4e725a6c, 
+  0xfbff0efd, 0x5638850f, 0x1ed5ae3d, 0x27392d36, 
+  0x64d90f0a, 0x21a65c68, 0xd1545b9b, 0x3a2e3624, 
+  0xb1670a0c, 0xfe75793, 0xd296eeb4, 0x9e919b1b, 
+  0x4fc5c080, 0xa220dc61, 0x694b775a, 0x161a121c, 
+  0xaba93e2, 0xe52aa0c0, 0x43e0223c, 0x1d171b12, 
+  0xb0d090e, 0xadc78bf2, 0xb9a8b62d, 0xc8a91e14, 
+  0x8519f157, 0x4c0775af, 0xbbdd99ee, 0xfd607fa3, 
+  0x9f2601f7, 0xbcf5725c, 0xc53b6644, 0x347efb5b, 
+  0x7629438b, 0xdcc623cb, 0x68fcedb6, 0x63f1e4b8, 
+  0xcadc31d7, 0x10856342, 0x40229713, 0x2011c684, 
+  0x7d244a85, 0xf83dbbd2, 0x1132f9ae, 0x6da129c7, 
+  0x4b2f9e1d, 0xf330b2dc, 0xec52860d, 0xd0e3c177, 
+  0x6c16b32b, 0x99b970a9, 0xfa489411, 0x2264e947, 
+  0xc48cfca8, 0x1a3ff0a0, 0xd82c7d56, 0xef903322, 
+  0xc74e4987, 0xc1d138d9, 0xfea2ca8c, 0x360bd498, 
+  0xcf81f5a6, 0x28de7aa5, 0x268eb7da, 0xa4bfad3f, 
+  0xe49d3a2c, 0xd927850, 0x9bcc5f6a, 0x62467e54, 
+  0xc2138df6, 0xe8b8d890, 0x5ef7392e, 0xf5afc382, 
+  0xbe805d9f, 0x7c93d069, 0xa92dd56f, 0xb31225cf, 
+  0x3b99acc8, 0xa77d1810, 0x6e639ce8, 0x7bbb3bdb, 
+  0x97826cd, 0xf418596e, 0x1b79aec, 0xa89a4f83, 
+  0x656e95e6, 0x7ee6ffaa, 0x8cfbc21, 0xe6e815ef, 
+  0xd99be7ba, 0xce366f4a, 0xd4099fea, 0xd67cb029, 
+  0xafb2a431, 0x31233f2a, 0x3094a5c6, 0xc066a235, 
+  0x37bc4e74, 0xa6ca82fc, 0xb0d090e0, 0x15d8a733, 
+  0x4a9804f1, 0xf7daec41, 0xe50cd7f, 0x2ff69117, 
+  0x8dd64d76, 0x4db0ef43, 0x544daacc, 0xdf0496e4, 
+  0xe3b5d19e, 0x1b886a4c, 0xb81f2cc1, 0x7f516546, 
+  0x4ea5e9d, 0x5d358c01, 0x737487fa, 0x2e410bfb, 
+  0x5a1d67b3, 0x52d2db92, 0x335610e9, 0x1347d66d, 
+  0x8c61d79a, 0x7a0ca137, 0x8e14f859, 0x893c13eb, 
+  0xee27a9ce, 0x35c961b7, 0xede51ce1, 0x3cb1477a, 
+  0x59dfd29c, 0x3f73f255, 0x79ce1418, 0xbf37c773, 
+  0xeacdf753, 0x5baafd5f, 0x146f3ddf, 0x86db4478, 
+  0x81f3afca, 0x3ec468b9, 0x2c342438, 0x5f40a3c2, 
+  0x72c31d16, 0xc25e2bc, 0x8b493c28, 0x41950dff, 
+  0x7101a839, 0xdeb30c08, 0x9ce4b4d8, 0x90c15664, 
+  0x6184cb7b, 0x70b632d5, 0x745c6c48, 0x4257b8d0, 
+};
+
+static uint32_t U1[256] = {
+  0xa7f45150, 0x65417e53, 0xa4171ac3, 0x5e273a96, 
+  0x6bab3bcb, 0x459d1ff1, 0x58faacab, 0x3e34b93, 
+  0xfa302055, 0x6d76adf6, 0x76cc8891, 0x4c02f525, 
+  0xd7e54ffc, 0xcb2ac5d7, 0x44352680, 0xa362b58f, 
+  0x5ab1de49, 0x1bba2567, 0xeea4598, 0xc0fe5de1, 
+  0x752fc302, 0xf04c8112, 0x97468da3, 0xf9d36bc6, 
+  0x5f8f03e7, 0x9c921595, 0x7a6dbfeb, 0x595295da, 
+  0x83bed42d, 0x217458d3, 0x69e04929, 0xc8c98e44, 
+  0x89c2756a, 0x798ef478, 0x3e58996b, 0x71b927dd, 
+  0x4fe1beb6, 0xad88f017, 0xac20c966, 0x3ace7db4, 
+  0x4adf6318, 0x311ae582, 0x33519760, 0x7f536245, 
+  0x7764b1e0, 0xae6bbb84, 0xa081fe1c, 0x2b08f994, 
+  0x68487058, 0xfd458f19, 0x6cde9487, 0xf87b52b7, 
+  0xd373ab23, 0x24b72e2, 0x8f1fe357, 0xab55662a, 
+  0x28ebb207, 0xc2b52f03, 0x7bc5869a, 0x837d3a5, 
+  0x872830f2, 0xa5bf23b2, 0x6a0302ba, 0x8216ed5c, 
+  0x1ccf8a2b, 0xb479a792, 0xf207f3f0, 0xe2694ea1, 
+  0xf4da65cd, 0xbe0506d5, 0x6234d11f, 0xfea6c48a, 
+  0x532e349d, 0x55f3a2a0, 0xe18a0532, 0xebf6a475, 
+  0xec830b39, 0xef6040aa, 0x9f715e06, 0x106ebd51, 
+  0x8a213ef9, 0x6dd963d, 0x53eddae, 0xbde64d46, 
+  0x8d5491b5, 0x5dc47105, 0xd406046f, 0x155060ff, 
+  0xfb981924, 0xe9bdd697, 0x434089cc, 0x9ed96777, 
+  0x42e8b0bd, 0x8b890788, 0x5b19e738, 0xeec879db, 
+  0xa7ca147, 0xf427ce9, 0x1e84f8c9, 0x0, 
+  0x86800983, 0xed2b3248, 0x70111eac, 0x725a6c4e, 
+  0xff0efdfb, 0x38850f56, 0xd5ae3d1e, 0x392d3627, 
+  0xd90f0a64, 0xa65c6821, 0x545b9bd1, 0x2e36243a, 
+  0x670a0cb1, 0xe757930f, 0x96eeb4d2, 0x919b1b9e, 
+  0xc5c0804f, 0x20dc61a2, 0x4b775a69, 0x1a121c16, 
+  0xba93e20a, 0x2aa0c0e5, 0xe0223c43, 0x171b121d, 
+  0xd090e0b, 0xc78bf2ad, 0xa8b62db9, 0xa91e14c8, 
+  0x19f15785, 0x775af4c, 0xdd99eebb, 0x607fa3fd, 
+  0x2601f79f, 0xf5725cbc, 0x3b6644c5, 0x7efb5b34, 
+  0x29438b76, 0xc623cbdc, 0xfcedb668, 0xf1e4b863, 
+  0xdc31d7ca, 0x85634210, 0x22971340, 0x11c68420, 
+  0x244a857d, 0x3dbbd2f8, 0x32f9ae11, 0xa129c76d, 
+  0x2f9e1d4b, 0x30b2dcf3, 0x52860dec, 0xe3c177d0, 
+  0x16b32b6c, 0xb970a999, 0x489411fa, 0x64e94722, 
+  0x8cfca8c4, 0x3ff0a01a, 0x2c7d56d8, 0x903322ef, 
+  0x4e4987c7, 0xd138d9c1, 0xa2ca8cfe, 0xbd49836, 
+  0x81f5a6cf, 0xde7aa528, 0x8eb7da26, 0xbfad3fa4, 
+  0x9d3a2ce4, 0x9278500d, 0xcc5f6a9b, 0x467e5462, 
+  0x138df6c2, 0xb8d890e8, 0xf7392e5e, 0xafc382f5, 
+  0x805d9fbe, 0x93d0697c, 0x2dd56fa9, 0x1225cfb3, 
+  0x99acc83b, 0x7d1810a7, 0x639ce86e, 0xbb3bdb7b, 
+  0x7826cd09, 0x18596ef4, 0xb79aec01, 0x9a4f83a8, 
+  0x6e95e665, 0xe6ffaa7e, 0xcfbc2108, 0xe815efe6, 
+  0x9be7bad9, 0x366f4ace, 0x99fead4, 0x7cb029d6, 
+  0xb2a431af, 0x233f2a31, 0x94a5c630, 0x66a235c0, 
+  0xbc4e7437, 0xca82fca6, 0xd090e0b0, 0xd8a73315, 
+  0x9804f14a, 0xdaec41f7, 0x50cd7f0e, 0xf691172f, 
+  0xd64d768d, 0xb0ef434d, 0x4daacc54, 0x496e4df, 
+  0xb5d19ee3, 0x886a4c1b, 0x1f2cc1b8, 0x5165467f, 
+  0xea5e9d04, 0x358c015d, 0x7487fa73, 0x410bfb2e, 
+  0x1d67b35a, 0xd2db9252, 0x5610e933, 0x47d66d13, 
+  0x61d79a8c, 0xca1377a, 0x14f8598e, 0x3c13eb89, 
+  0x27a9ceee, 0xc961b735, 0xe51ce1ed, 0xb1477a3c, 
+  0xdfd29c59, 0x73f2553f, 0xce141879, 0x37c773bf, 
+  0xcdf753ea, 0xaafd5f5b, 0x6f3ddf14, 0xdb447886, 
+  0xf3afca81, 0xc468b93e, 0x3424382c, 0x40a3c25f, 
+  0xc31d1672, 0x25e2bc0c, 0x493c288b, 0x950dff41, 
+  0x1a83971, 0xb30c08de, 0xe4b4d89c, 0xc1566490, 
+  0x84cb7b61, 0xb632d570, 0x5c6c4874, 0x57b8d042, 
+};
+
+static uint32_t U2[256] = {
+  0xf45150a7, 0x417e5365, 0x171ac3a4, 0x273a965e, 
+  0xab3bcb6b, 0x9d1ff145, 0xfaacab58, 0xe34b9303, 
+  0x302055fa, 0x76adf66d, 0xcc889176, 0x2f5254c, 
+  0xe54ffcd7, 0x2ac5d7cb, 0x35268044, 0x62b58fa3, 
+  0xb1de495a, 0xba25671b, 0xea45980e, 0xfe5de1c0, 
+  0x2fc30275, 0x4c8112f0, 0x468da397, 0xd36bc6f9, 
+  0x8f03e75f, 0x9215959c, 0x6dbfeb7a, 0x5295da59, 
+  0xbed42d83, 0x7458d321, 0xe0492969, 0xc98e44c8, 
+  0xc2756a89, 0x8ef47879, 0x58996b3e, 0xb927dd71, 
+  0xe1beb64f, 0x88f017ad, 0x20c966ac, 0xce7db43a, 
+  0xdf63184a, 0x1ae58231, 0x51976033, 0x5362457f, 
+  0x64b1e077, 0x6bbb84ae, 0x81fe1ca0, 0x8f9942b, 
+  0x48705868, 0x458f19fd, 0xde94876c, 0x7b52b7f8, 
+  0x73ab23d3, 0x4b72e202, 0x1fe3578f, 0x55662aab, 
+  0xebb20728, 0xb52f03c2, 0xc5869a7b, 0x37d3a508, 
+  0x2830f287, 0xbf23b2a5, 0x302ba6a, 0x16ed5c82, 
+  0xcf8a2b1c, 0x79a792b4, 0x7f3f0f2, 0x694ea1e2, 
+  0xda65cdf4, 0x506d5be, 0x34d11f62, 0xa6c48afe, 
+  0x2e349d53, 0xf3a2a055, 0x8a0532e1, 0xf6a475eb, 
+  0x830b39ec, 0x6040aaef, 0x715e069f, 0x6ebd5110, 
+  0x213ef98a, 0xdd963d06, 0x3eddae05, 0xe64d46bd, 
+  0x5491b58d, 0xc471055d, 0x6046fd4, 0x5060ff15, 
+  0x981924fb, 0xbdd697e9, 0x4089cc43, 0xd967779e, 
+  0xe8b0bd42, 0x8907888b, 0x19e7385b, 0xc879dbee, 
+  0x7ca1470a, 0x427ce90f, 0x84f8c91e, 0x0, 
+  0x80098386, 0x2b3248ed, 0x111eac70, 0x5a6c4e72, 
+  0xefdfbff, 0x850f5638, 0xae3d1ed5, 0x2d362739, 
+  0xf0a64d9, 0x5c6821a6, 0x5b9bd154, 0x36243a2e, 
+  0xa0cb167, 0x57930fe7, 0xeeb4d296, 0x9b1b9e91, 
+  0xc0804fc5, 0xdc61a220, 0x775a694b, 0x121c161a, 
+  0x93e20aba, 0xa0c0e52a, 0x223c43e0, 0x1b121d17, 
+  0x90e0b0d, 0x8bf2adc7, 0xb62db9a8, 0x1e14c8a9, 
+  0xf1578519, 0x75af4c07, 0x99eebbdd, 0x7fa3fd60, 
+  0x1f79f26, 0x725cbcf5, 0x6644c53b, 0xfb5b347e, 
+  0x438b7629, 0x23cbdcc6, 0xedb668fc, 0xe4b863f1, 
+  0x31d7cadc, 0x63421085, 0x97134022, 0xc6842011, 
+  0x4a857d24, 0xbbd2f83d, 0xf9ae1132, 0x29c76da1, 
+  0x9e1d4b2f, 0xb2dcf330, 0x860dec52, 0xc177d0e3, 
+  0xb32b6c16, 0x70a999b9, 0x9411fa48, 0xe9472264, 
+  0xfca8c48c, 0xf0a01a3f, 0x7d56d82c, 0x3322ef90, 
+  0x4987c74e, 0x38d9c1d1, 0xca8cfea2, 0xd498360b, 
+  0xf5a6cf81, 0x7aa528de, 0xb7da268e, 0xad3fa4bf, 
+  0x3a2ce49d, 0x78500d92, 0x5f6a9bcc, 0x7e546246, 
+  0x8df6c213, 0xd890e8b8, 0x392e5ef7, 0xc382f5af, 
+  0x5d9fbe80, 0xd0697c93, 0xd56fa92d, 0x25cfb312, 
+  0xacc83b99, 0x1810a77d, 0x9ce86e63, 0x3bdb7bbb, 
+  0x26cd0978, 0x596ef418, 0x9aec01b7, 0x4f83a89a, 
+  0x95e6656e, 0xffaa7ee6, 0xbc2108cf, 0x15efe6e8, 
+  0xe7bad99b, 0x6f4ace36, 0x9fead409, 0xb029d67c, 
+  0xa431afb2, 0x3f2a3123, 0xa5c63094, 0xa235c066, 
+  0x4e7437bc, 0x82fca6ca, 0x90e0b0d0, 0xa73315d8, 
+  0x4f14a98, 0xec41f7da, 0xcd7f0e50, 0x91172ff6, 
+  0x4d768dd6, 0xef434db0, 0xaacc544d, 0x96e4df04, 
+  0xd19ee3b5, 0x6a4c1b88, 0x2cc1b81f, 0x65467f51, 
+  0x5e9d04ea, 0x8c015d35, 0x87fa7374, 0xbfb2e41, 
+  0x67b35a1d, 0xdb9252d2, 0x10e93356, 0xd66d1347, 
+  0xd79a8c61, 0xa1377a0c, 0xf8598e14, 0x13eb893c, 
+  0xa9ceee27, 0x61b735c9, 0x1ce1ede5, 0x477a3cb1, 
+  0xd29c59df, 0xf2553f73, 0x141879ce, 0xc773bf37, 
+  0xf753eacd, 0xfd5f5baa, 0x3ddf146f, 0x447886db, 
+  0xafca81f3, 0x68b93ec4, 0x24382c34, 0xa3c25f40, 
+  0x1d1672c3, 0xe2bc0c25, 0x3c288b49, 0xdff4195, 
+  0xa8397101, 0xc08deb3, 0xb4d89ce4, 0x566490c1, 
+  0xcb7b6184, 0x32d570b6, 0x6c48745c, 0xb8d04257, 
+};
+
+static uint32_t U3[256] = {
+  0x5150a7f4, 0x7e536541, 0x1ac3a417, 0x3a965e27, 
+  0x3bcb6bab, 0x1ff1459d, 0xacab58fa, 0x4b9303e3, 
+  0x2055fa30, 0xadf66d76, 0x889176cc, 0xf5254c02, 
+  0x4ffcd7e5, 0xc5d7cb2a, 0x26804435, 0xb58fa362, 
+  0xde495ab1, 0x25671bba, 0x45980eea, 0x5de1c0fe, 
+  0xc302752f, 0x8112f04c, 0x8da39746, 0x6bc6f9d3, 
+  0x3e75f8f, 0x15959c92, 0xbfeb7a6d, 0x95da5952, 
+  0xd42d83be, 0x58d32174, 0x492969e0, 0x8e44c8c9, 
+  0x756a89c2, 0xf478798e, 0x996b3e58, 0x27dd71b9, 
+  0xbeb64fe1, 0xf017ad88, 0xc966ac20, 0x7db43ace, 
+  0x63184adf, 0xe582311a, 0x97603351, 0x62457f53, 
+  0xb1e07764, 0xbb84ae6b, 0xfe1ca081, 0xf9942b08, 
+  0x70586848, 0x8f19fd45, 0x94876cde, 0x52b7f87b, 
+  0xab23d373, 0x72e2024b, 0xe3578f1f, 0x662aab55, 
+  0xb20728eb, 0x2f03c2b5, 0x869a7bc5, 0xd3a50837, 
+  0x30f28728, 0x23b2a5bf, 0x2ba6a03, 0xed5c8216, 
+  0x8a2b1ccf, 0xa792b479, 0xf3f0f207, 0x4ea1e269, 
+  0x65cdf4da, 0x6d5be05, 0xd11f6234, 0xc48afea6, 
+  0x349d532e, 0xa2a055f3, 0x532e18a, 0xa475ebf6, 
+  0xb39ec83, 0x40aaef60, 0x5e069f71, 0xbd51106e, 
+  0x3ef98a21, 0x963d06dd, 0xddae053e, 0x4d46bde6, 
+  0x91b58d54, 0x71055dc4, 0x46fd406, 0x60ff1550, 
+  0x1924fb98, 0xd697e9bd, 0x89cc4340, 0x67779ed9, 
+  0xb0bd42e8, 0x7888b89, 0xe7385b19, 0x79dbeec8, 
+  0xa1470a7c, 0x7ce90f42, 0xf8c91e84, 0x0, 
+  0x9838680, 0x3248ed2b, 0x1eac7011, 0x6c4e725a, 
+  0xfdfbff0e, 0xf563885, 0x3d1ed5ae, 0x3627392d, 
+  0xa64d90f, 0x6821a65c, 0x9bd1545b, 0x243a2e36, 
+  0xcb1670a, 0x930fe757, 0xb4d296ee, 0x1b9e919b, 
+  0x804fc5c0, 0x61a220dc, 0x5a694b77, 0x1c161a12, 
+  0xe20aba93, 0xc0e52aa0, 0x3c43e022, 0x121d171b, 
+  0xe0b0d09, 0xf2adc78b, 0x2db9a8b6, 0x14c8a91e, 
+  0x578519f1, 0xaf4c0775, 0xeebbdd99, 0xa3fd607f, 
+  0xf79f2601, 0x5cbcf572, 0x44c53b66, 0x5b347efb, 
+  0x8b762943, 0xcbdcc623, 0xb668fced, 0xb863f1e4, 
+  0xd7cadc31, 0x42108563, 0x13402297, 0x842011c6, 
+  0x857d244a, 0xd2f83dbb, 0xae1132f9, 0xc76da129, 
+  0x1d4b2f9e, 0xdcf330b2, 0xdec5286, 0x77d0e3c1, 
+  0x2b6c16b3, 0xa999b970, 0x11fa4894, 0x472264e9, 
+  0xa8c48cfc, 0xa01a3ff0, 0x56d82c7d, 0x22ef9033, 
+  0x87c74e49, 0xd9c1d138, 0x8cfea2ca, 0x98360bd4, 
+  0xa6cf81f5, 0xa528de7a, 0xda268eb7, 0x3fa4bfad, 
+  0x2ce49d3a, 0x500d9278, 0x6a9bcc5f, 0x5462467e, 
+  0xf6c2138d, 0x90e8b8d8, 0x2e5ef739, 0x82f5afc3, 
+  0x9fbe805d, 0x697c93d0, 0x6fa92dd5, 0xcfb31225, 
+  0xc83b99ac, 0x10a77d18, 0xe86e639c, 0xdb7bbb3b, 
+  0xcd097826, 0x6ef41859, 0xec01b79a, 0x83a89a4f, 
+  0xe6656e95, 0xaa7ee6ff, 0x2108cfbc, 0xefe6e815, 
+  0xbad99be7, 0x4ace366f, 0xead4099f, 0x29d67cb0, 
+  0x31afb2a4, 0x2a31233f, 0xc63094a5, 0x35c066a2, 
+  0x7437bc4e, 0xfca6ca82, 0xe0b0d090, 0x3315d8a7, 
+  0xf14a9804, 0x41f7daec, 0x7f0e50cd, 0x172ff691, 
+  0x768dd64d, 0x434db0ef, 0xcc544daa, 0xe4df0496, 
+  0x9ee3b5d1, 0x4c1b886a, 0xc1b81f2c, 0x467f5165, 
+  0x9d04ea5e, 0x15d358c, 0xfa737487, 0xfb2e410b, 
+  0xb35a1d67, 0x9252d2db, 0xe9335610, 0x6d1347d6, 
+  0x9a8c61d7, 0x377a0ca1, 0x598e14f8, 0xeb893c13, 
+  0xceee27a9, 0xb735c961, 0xe1ede51c, 0x7a3cb147, 
+  0x9c59dfd2, 0x553f73f2, 0x1879ce14, 0x73bf37c7, 
+  0x53eacdf7, 0x5f5baafd, 0xdf146f3d, 0x7886db44, 
+  0xca81f3af, 0xb93ec468, 0x382c3424, 0xc25f40a3, 
+  0x1672c31d, 0xbc0c25e2, 0x288b493c, 0xff41950d, 
+  0x397101a8, 0x8deb30c, 0xd89ce4b4, 0x6490c156, 
+  0x7b6184cb, 0xd570b632, 0x48745c6c, 0xd04257b8, 
+};
+
+#else /* assume big endian */
+
+static uint32_t T0[256] = {
+  0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d, 
+  0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554, 
+  0x60303050, 0x2010103, 0xce6767a9, 0x562b2b7d, 
+  0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a, 
+  0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87, 
+  0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b, 
+  0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea, 
+  0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b, 
+  0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a, 
+  0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f, 
+  0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108, 
+  0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f, 
+  0x804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e, 
+  0x30181828, 0x379696a1, 0xa05050f, 0x2f9a9ab5, 
+  0xe070709, 0x24121236, 0x1b80809b, 0xdfe2e23d, 
+  0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f, 
+  0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e, 
+  0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb, 
+  0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce, 
+  0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497, 
+  0xa65353f5, 0xb9d1d168, 0x0, 0xc1eded2c, 
+  0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed, 
+  0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b, 
+  0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a, 
+  0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16, 
+  0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594, 
+  0x8a4545cf, 0xe9f9f910, 0x4020206, 0xfe7f7f81, 
+  0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3, 
+  0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x58f8f8a, 
+  0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504, 
+  0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163, 
+  0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d, 
+  0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f, 
+  0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739, 
+  0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47, 
+  0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395, 
+  0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f, 
+  0x44222266, 0x542a2a7e, 0x3b9090ab, 0xb888883, 
+  0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c, 
+  0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76, 
+  0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e, 
+  0x924949db, 0xc06060a, 0x4824246c, 0xb85c5ce4, 
+  0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6, 
+  0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b, 
+  0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7, 
+  0x18d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0, 
+  0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25, 
+  0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818, 
+  0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72, 
+  0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651, 
+  0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21, 
+  0x964b4bdd, 0x61bdbddc, 0xd8b8b86, 0xf8a8a85, 
+  0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa, 
+  0x904848d8, 0x6030305, 0xf7f6f601, 0x1c0e0e12, 
+  0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0, 
+  0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9, 
+  0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133, 
+  0xd26969bb, 0xa9d9d970, 0x78e8e89, 0x339494a7, 
+  0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920, 
+  0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a, 
+  0x38c8c8f, 0x59a1a1f8, 0x9898980, 0x1a0d0d17, 
+  0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8, 
+  0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11, 
+  0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a, 
+};
+
+static uint32_t T1[256] = {
+  0xa5c66363, 0x84f87c7c, 0x99ee7777, 0x8df67b7b, 
+  0xdfff2f2, 0xbdd66b6b, 0xb1de6f6f, 0x5491c5c5, 
+  0x50603030, 0x3020101, 0xa9ce6767, 0x7d562b2b, 
+  0x19e7fefe, 0x62b5d7d7, 0xe64dabab, 0x9aec7676, 
+  0x458fcaca, 0x9d1f8282, 0x4089c9c9, 0x87fa7d7d, 
+  0x15effafa, 0xebb25959, 0xc98e4747, 0xbfbf0f0, 
+  0xec41adad, 0x67b3d4d4, 0xfd5fa2a2, 0xea45afaf, 
+  0xbf239c9c, 0xf753a4a4, 0x96e47272, 0x5b9bc0c0, 
+  0xc275b7b7, 0x1ce1fdfd, 0xae3d9393, 0x6a4c2626, 
+  0x5a6c3636, 0x417e3f3f, 0x2f5f7f7, 0x4f83cccc, 
+  0x5c683434, 0xf451a5a5, 0x34d1e5e5, 0x8f9f1f1, 
+  0x93e27171, 0x73abd8d8, 0x53623131, 0x3f2a1515, 
+  0xc080404, 0x5295c7c7, 0x65462323, 0x5e9dc3c3, 
+  0x28301818, 0xa1379696, 0xf0a0505, 0xb52f9a9a, 
+  0x90e0707, 0x36241212, 0x9b1b8080, 0x3ddfe2e2, 
+  0x26cdebeb, 0x694e2727, 0xcd7fb2b2, 0x9fea7575, 
+  0x1b120909, 0x9e1d8383, 0x74582c2c, 0x2e341a1a, 
+  0x2d361b1b, 0xb2dc6e6e, 0xeeb45a5a, 0xfb5ba0a0, 
+  0xf6a45252, 0x4d763b3b, 0x61b7d6d6, 0xce7db3b3, 
+  0x7b522929, 0x3edde3e3, 0x715e2f2f, 0x97138484, 
+  0xf5a65353, 0x68b9d1d1, 0x0, 0x2cc1eded, 
+  0x60402020, 0x1fe3fcfc, 0xc879b1b1, 0xedb65b5b, 
+  0xbed46a6a, 0x468dcbcb, 0xd967bebe, 0x4b723939, 
+  0xde944a4a, 0xd4984c4c, 0xe8b05858, 0x4a85cfcf, 
+  0x6bbbd0d0, 0x2ac5efef, 0xe54faaaa, 0x16edfbfb, 
+  0xc5864343, 0xd79a4d4d, 0x55663333, 0x94118585, 
+  0xcf8a4545, 0x10e9f9f9, 0x6040202, 0x81fe7f7f, 
+  0xf0a05050, 0x44783c3c, 0xba259f9f, 0xe34ba8a8, 
+  0xf3a25151, 0xfe5da3a3, 0xc0804040, 0x8a058f8f, 
+  0xad3f9292, 0xbc219d9d, 0x48703838, 0x4f1f5f5, 
+  0xdf63bcbc, 0xc177b6b6, 0x75afdada, 0x63422121, 
+  0x30201010, 0x1ae5ffff, 0xefdf3f3, 0x6dbfd2d2, 
+  0x4c81cdcd, 0x14180c0c, 0x35261313, 0x2fc3ecec, 
+  0xe1be5f5f, 0xa2359797, 0xcc884444, 0x392e1717, 
+  0x5793c4c4, 0xf255a7a7, 0x82fc7e7e, 0x477a3d3d, 
+  0xacc86464, 0xe7ba5d5d, 0x2b321919, 0x95e67373, 
+  0xa0c06060, 0x98198181, 0xd19e4f4f, 0x7fa3dcdc, 
+  0x66442222, 0x7e542a2a, 0xab3b9090, 0x830b8888, 
+  0xca8c4646, 0x29c7eeee, 0xd36bb8b8, 0x3c281414, 
+  0x79a7dede, 0xe2bc5e5e, 0x1d160b0b, 0x76addbdb, 
+  0x3bdbe0e0, 0x56643232, 0x4e743a3a, 0x1e140a0a, 
+  0xdb924949, 0xa0c0606, 0x6c482424, 0xe4b85c5c, 
+  0x5d9fc2c2, 0x6ebdd3d3, 0xef43acac, 0xa6c46262, 
+  0xa8399191, 0xa4319595, 0x37d3e4e4, 0x8bf27979, 
+  0x32d5e7e7, 0x438bc8c8, 0x596e3737, 0xb7da6d6d, 
+  0x8c018d8d, 0x64b1d5d5, 0xd29c4e4e, 0xe049a9a9, 
+  0xb4d86c6c, 0xfaac5656, 0x7f3f4f4, 0x25cfeaea, 
+  0xafca6565, 0x8ef47a7a, 0xe947aeae, 0x18100808, 
+  0xd56fbaba, 0x88f07878, 0x6f4a2525, 0x725c2e2e, 
+  0x24381c1c, 0xf157a6a6, 0xc773b4b4, 0x5197c6c6, 
+  0x23cbe8e8, 0x7ca1dddd, 0x9ce87474, 0x213e1f1f, 
+  0xdd964b4b, 0xdc61bdbd, 0x860d8b8b, 0x850f8a8a, 
+  0x90e07070, 0x427c3e3e, 0xc471b5b5, 0xaacc6666, 
+  0xd8904848, 0x5060303, 0x1f7f6f6, 0x121c0e0e, 
+  0xa3c26161, 0x5f6a3535, 0xf9ae5757, 0xd069b9b9, 
+  0x91178686, 0x5899c1c1, 0x273a1d1d, 0xb9279e9e, 
+  0x38d9e1e1, 0x13ebf8f8, 0xb32b9898, 0x33221111, 
+  0xbbd26969, 0x70a9d9d9, 0x89078e8e, 0xa7339494, 
+  0xb62d9b9b, 0x223c1e1e, 0x92158787, 0x20c9e9e9, 
+  0x4987cece, 0xffaa5555, 0x78502828, 0x7aa5dfdf, 
+  0x8f038c8c, 0xf859a1a1, 0x80098989, 0x171a0d0d, 
+  0xda65bfbf, 0x31d7e6e6, 0xc6844242, 0xb8d06868, 
+  0xc3824141, 0xb0299999, 0x775a2d2d, 0x111e0f0f, 
+  0xcb7bb0b0, 0xfca85454, 0xd66dbbbb, 0x3a2c1616, 
+};
+
+static uint32_t T2[256] = {
+  0x63a5c663, 0x7c84f87c, 0x7799ee77, 0x7b8df67b, 
+  0xf20dfff2, 0x6bbdd66b, 0x6fb1de6f, 0xc55491c5, 
+  0x30506030, 0x1030201, 0x67a9ce67, 0x2b7d562b, 
+  0xfe19e7fe, 0xd762b5d7, 0xabe64dab, 0x769aec76, 
+  0xca458fca, 0x829d1f82, 0xc94089c9, 0x7d87fa7d, 
+  0xfa15effa, 0x59ebb259, 0x47c98e47, 0xf00bfbf0, 
+  0xadec41ad, 0xd467b3d4, 0xa2fd5fa2, 0xafea45af, 
+  0x9cbf239c, 0xa4f753a4, 0x7296e472, 0xc05b9bc0, 
+  0xb7c275b7, 0xfd1ce1fd, 0x93ae3d93, 0x266a4c26, 
+  0x365a6c36, 0x3f417e3f, 0xf702f5f7, 0xcc4f83cc, 
+  0x345c6834, 0xa5f451a5, 0xe534d1e5, 0xf108f9f1, 
+  0x7193e271, 0xd873abd8, 0x31536231, 0x153f2a15, 
+  0x40c0804, 0xc75295c7, 0x23654623, 0xc35e9dc3, 
+  0x18283018, 0x96a13796, 0x50f0a05, 0x9ab52f9a, 
+  0x7090e07, 0x12362412, 0x809b1b80, 0xe23ddfe2, 
+  0xeb26cdeb, 0x27694e27, 0xb2cd7fb2, 0x759fea75, 
+  0x91b1209, 0x839e1d83, 0x2c74582c, 0x1a2e341a, 
+  0x1b2d361b, 0x6eb2dc6e, 0x5aeeb45a, 0xa0fb5ba0, 
+  0x52f6a452, 0x3b4d763b, 0xd661b7d6, 0xb3ce7db3, 
+  0x297b5229, 0xe33edde3, 0x2f715e2f, 0x84971384, 
+  0x53f5a653, 0xd168b9d1, 0x0, 0xed2cc1ed, 
+  0x20604020, 0xfc1fe3fc, 0xb1c879b1, 0x5bedb65b, 
+  0x6abed46a, 0xcb468dcb, 0xbed967be, 0x394b7239, 
+  0x4ade944a, 0x4cd4984c, 0x58e8b058, 0xcf4a85cf, 
+  0xd06bbbd0, 0xef2ac5ef, 0xaae54faa, 0xfb16edfb, 
+  0x43c58643, 0x4dd79a4d, 0x33556633, 0x85941185, 
+  0x45cf8a45, 0xf910e9f9, 0x2060402, 0x7f81fe7f, 
+  0x50f0a050, 0x3c44783c, 0x9fba259f, 0xa8e34ba8, 
+  0x51f3a251, 0xa3fe5da3, 0x40c08040, 0x8f8a058f, 
+  0x92ad3f92, 0x9dbc219d, 0x38487038, 0xf504f1f5, 
+  0xbcdf63bc, 0xb6c177b6, 0xda75afda, 0x21634221, 
+  0x10302010, 0xff1ae5ff, 0xf30efdf3, 0xd26dbfd2, 
+  0xcd4c81cd, 0xc14180c, 0x13352613, 0xec2fc3ec, 
+  0x5fe1be5f, 0x97a23597, 0x44cc8844, 0x17392e17, 
+  0xc45793c4, 0xa7f255a7, 0x7e82fc7e, 0x3d477a3d, 
+  0x64acc864, 0x5de7ba5d, 0x192b3219, 0x7395e673, 
+  0x60a0c060, 0x81981981, 0x4fd19e4f, 0xdc7fa3dc, 
+  0x22664422, 0x2a7e542a, 0x90ab3b90, 0x88830b88, 
+  0x46ca8c46, 0xee29c7ee, 0xb8d36bb8, 0x143c2814, 
+  0xde79a7de, 0x5ee2bc5e, 0xb1d160b, 0xdb76addb, 
+  0xe03bdbe0, 0x32566432, 0x3a4e743a, 0xa1e140a, 
+  0x49db9249, 0x60a0c06, 0x246c4824, 0x5ce4b85c, 
+  0xc25d9fc2, 0xd36ebdd3, 0xacef43ac, 0x62a6c462, 
+  0x91a83991, 0x95a43195, 0xe437d3e4, 0x798bf279, 
+  0xe732d5e7, 0xc8438bc8, 0x37596e37, 0x6db7da6d, 
+  0x8d8c018d, 0xd564b1d5, 0x4ed29c4e, 0xa9e049a9, 
+  0x6cb4d86c, 0x56faac56, 0xf407f3f4, 0xea25cfea, 
+  0x65afca65, 0x7a8ef47a, 0xaee947ae, 0x8181008, 
+  0xbad56fba, 0x7888f078, 0x256f4a25, 0x2e725c2e, 
+  0x1c24381c, 0xa6f157a6, 0xb4c773b4, 0xc65197c6, 
+  0xe823cbe8, 0xdd7ca1dd, 0x749ce874, 0x1f213e1f, 
+  0x4bdd964b, 0xbddc61bd, 0x8b860d8b, 0x8a850f8a, 
+  0x7090e070, 0x3e427c3e, 0xb5c471b5, 0x66aacc66, 
+  0x48d89048, 0x3050603, 0xf601f7f6, 0xe121c0e, 
+  0x61a3c261, 0x355f6a35, 0x57f9ae57, 0xb9d069b9, 
+  0x86911786, 0xc15899c1, 0x1d273a1d, 0x9eb9279e, 
+  0xe138d9e1, 0xf813ebf8, 0x98b32b98, 0x11332211, 
+  0x69bbd269, 0xd970a9d9, 0x8e89078e, 0x94a73394, 
+  0x9bb62d9b, 0x1e223c1e, 0x87921587, 0xe920c9e9, 
+  0xce4987ce, 0x55ffaa55, 0x28785028, 0xdf7aa5df, 
+  0x8c8f038c, 0xa1f859a1, 0x89800989, 0xd171a0d, 
+  0xbfda65bf, 0xe631d7e6, 0x42c68442, 0x68b8d068, 
+  0x41c38241, 0x99b02999, 0x2d775a2d, 0xf111e0f, 
+  0xb0cb7bb0, 0x54fca854, 0xbbd66dbb, 0x163a2c16, 
+};
+
+static uint32_t T3[256] = {
+  0x6363a5c6, 0x7c7c84f8, 0x777799ee, 0x7b7b8df6, 
+  0xf2f20dff, 0x6b6bbdd6, 0x6f6fb1de, 0xc5c55491, 
+  0x30305060, 0x1010302, 0x6767a9ce, 0x2b2b7d56, 
+  0xfefe19e7, 0xd7d762b5, 0xababe64d, 0x76769aec, 
+  0xcaca458f, 0x82829d1f, 0xc9c94089, 0x7d7d87fa, 
+  0xfafa15ef, 0x5959ebb2, 0x4747c98e, 0xf0f00bfb, 
+  0xadadec41, 0xd4d467b3, 0xa2a2fd5f, 0xafafea45, 
+  0x9c9cbf23, 0xa4a4f753, 0x727296e4, 0xc0c05b9b, 
+  0xb7b7c275, 0xfdfd1ce1, 0x9393ae3d, 0x26266a4c, 
+  0x36365a6c, 0x3f3f417e, 0xf7f702f5, 0xcccc4f83, 
+  0x34345c68, 0xa5a5f451, 0xe5e534d1, 0xf1f108f9, 
+  0x717193e2, 0xd8d873ab, 0x31315362, 0x15153f2a, 
+  0x4040c08, 0xc7c75295, 0x23236546, 0xc3c35e9d, 
+  0x18182830, 0x9696a137, 0x5050f0a, 0x9a9ab52f, 
+  0x707090e, 0x12123624, 0x80809b1b, 0xe2e23ddf, 
+  0xebeb26cd, 0x2727694e, 0xb2b2cd7f, 0x75759fea, 
+  0x9091b12, 0x83839e1d, 0x2c2c7458, 0x1a1a2e34, 
+  0x1b1b2d36, 0x6e6eb2dc, 0x5a5aeeb4, 0xa0a0fb5b, 
+  0x5252f6a4, 0x3b3b4d76, 0xd6d661b7, 0xb3b3ce7d, 
+  0x29297b52, 0xe3e33edd, 0x2f2f715e, 0x84849713, 
+  0x5353f5a6, 0xd1d168b9, 0x0, 0xeded2cc1, 
+  0x20206040, 0xfcfc1fe3, 0xb1b1c879, 0x5b5bedb6, 
+  0x6a6abed4, 0xcbcb468d, 0xbebed967, 0x39394b72, 
+  0x4a4ade94, 0x4c4cd498, 0x5858e8b0, 0xcfcf4a85, 
+  0xd0d06bbb, 0xefef2ac5, 0xaaaae54f, 0xfbfb16ed, 
+  0x4343c586, 0x4d4dd79a, 0x33335566, 0x85859411, 
+  0x4545cf8a, 0xf9f910e9, 0x2020604, 0x7f7f81fe, 
+  0x5050f0a0, 0x3c3c4478, 0x9f9fba25, 0xa8a8e34b, 
+  0x5151f3a2, 0xa3a3fe5d, 0x4040c080, 0x8f8f8a05, 
+  0x9292ad3f, 0x9d9dbc21, 0x38384870, 0xf5f504f1, 
+  0xbcbcdf63, 0xb6b6c177, 0xdada75af, 0x21216342, 
+  0x10103020, 0xffff1ae5, 0xf3f30efd, 0xd2d26dbf, 
+  0xcdcd4c81, 0xc0c1418, 0x13133526, 0xecec2fc3, 
+  0x5f5fe1be, 0x9797a235, 0x4444cc88, 0x1717392e, 
+  0xc4c45793, 0xa7a7f255, 0x7e7e82fc, 0x3d3d477a, 
+  0x6464acc8, 0x5d5de7ba, 0x19192b32, 0x737395e6, 
+  0x6060a0c0, 0x81819819, 0x4f4fd19e, 0xdcdc7fa3, 
+  0x22226644, 0x2a2a7e54, 0x9090ab3b, 0x8888830b, 
+  0x4646ca8c, 0xeeee29c7, 0xb8b8d36b, 0x14143c28, 
+  0xdede79a7, 0x5e5ee2bc, 0xb0b1d16, 0xdbdb76ad, 
+  0xe0e03bdb, 0x32325664, 0x3a3a4e74, 0xa0a1e14, 
+  0x4949db92, 0x6060a0c, 0x24246c48, 0x5c5ce4b8, 
+  0xc2c25d9f, 0xd3d36ebd, 0xacacef43, 0x6262a6c4, 
+  0x9191a839, 0x9595a431, 0xe4e437d3, 0x79798bf2, 
+  0xe7e732d5, 0xc8c8438b, 0x3737596e, 0x6d6db7da, 
+  0x8d8d8c01, 0xd5d564b1, 0x4e4ed29c, 0xa9a9e049, 
+  0x6c6cb4d8, 0x5656faac, 0xf4f407f3, 0xeaea25cf, 
+  0x6565afca, 0x7a7a8ef4, 0xaeaee947, 0x8081810, 
+  0xbabad56f, 0x787888f0, 0x25256f4a, 0x2e2e725c, 
+  0x1c1c2438, 0xa6a6f157, 0xb4b4c773, 0xc6c65197, 
+  0xe8e823cb, 0xdddd7ca1, 0x74749ce8, 0x1f1f213e, 
+  0x4b4bdd96, 0xbdbddc61, 0x8b8b860d, 0x8a8a850f, 
+  0x707090e0, 0x3e3e427c, 0xb5b5c471, 0x6666aacc, 
+  0x4848d890, 0x3030506, 0xf6f601f7, 0xe0e121c, 
+  0x6161a3c2, 0x35355f6a, 0x5757f9ae, 0xb9b9d069, 
+  0x86869117, 0xc1c15899, 0x1d1d273a, 0x9e9eb927, 
+  0xe1e138d9, 0xf8f813eb, 0x9898b32b, 0x11113322, 
+  0x6969bbd2, 0xd9d970a9, 0x8e8e8907, 0x9494a733, 
+  0x9b9bb62d, 0x1e1e223c, 0x87879215, 0xe9e920c9, 
+  0xcece4987, 0x5555ffaa, 0x28287850, 0xdfdf7aa5, 
+  0x8c8c8f03, 0xa1a1f859, 0x89898009, 0xd0d171a, 
+  0xbfbfda65, 0xe6e631d7, 0x4242c684, 0x6868b8d0, 
+  0x4141c382, 0x9999b029, 0x2d2d775a, 0xf0f111e, 
+  0xb0b0cb7b, 0x5454fca8, 0xbbbbd66d, 0x16163a2c, 
+};
+
+static uint32_t U0[256] = {
+  0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96, 
+  0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393, 
+  0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25, 
+  0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f, 
+  0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1, 
+  0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6, 
+  0x38f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da, 
+  0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844, 
+  0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd, 
+  0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4, 
+  0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45, 
+  0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94, 
+  0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7, 
+  0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a, 
+  0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5, 
+  0x302887f2, 0x23bfa5b2, 0x2036aba, 0xed16825c, 
+  0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1, 
+  0x65daf4cd, 0x605bed5, 0xd134621f, 0xc4a6fe8a, 
+  0x342e539d, 0xa2f355a0, 0x58ae132, 0xa4f6eb75, 
+  0xb83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051, 
+  0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46, 
+  0x91548db5, 0x71c45d05, 0x406d46f, 0x605015ff, 
+  0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77, 
+  0xb0e842bd, 0x7898b88, 0xe7195b38, 0x79c8eedb, 
+  0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x0, 
+  0x9808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e, 
+  0xfd0efffb, 0xf853856, 0x3daed51e, 0x362d3927, 
+  0xa0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a, 
+  0xc0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e, 
+  0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16, 
+  0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d, 
+  0xe090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8, 
+  0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd, 
+  0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34, 
+  0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163, 
+  0xd731dcca, 0x42638510, 0x13972240, 0x84c61120, 
+  0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d, 
+  0x1d9e2f4b, 0xdcb230f3, 0xd8652ec, 0x77c1e3d0, 
+  0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422, 
+  0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef, 
+  0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36, 
+  0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4, 
+  0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662, 
+  0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5, 
+  0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3, 
+  0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b, 
+  0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8, 
+  0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6, 
+  0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6, 
+  0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0, 
+  0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815, 
+  0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f, 
+  0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df, 
+  0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f, 
+  0x9d5eea04, 0x18c355d, 0xfa877473, 0xfb0b412e, 
+  0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713, 
+  0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89, 
+  0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c, 
+  0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf, 
+  0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86, 
+  0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f, 
+  0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541, 
+  0x39a80171, 0x80cb3de, 0xd8b4e49c, 0x6456c190, 
+  0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742
+};
+
+static uint32_t U1[256] = {
+  0x5051f4a7, 0x537e4165, 0xc31a17a4, 0x963a275e, 
+  0xcb3bab6b, 0xf11f9d45, 0xabacfa58, 0x934be303, 
+  0x552030fa, 0xf6ad766d, 0x9188cc76, 0x25f5024c, 
+  0xfc4fe5d7, 0xd7c52acb, 0x80263544, 0x8fb562a3, 
+  0x49deb15a, 0x6725ba1b, 0x9845ea0e, 0xe15dfec0, 
+  0x2c32f75, 0x12814cf0, 0xa38d4697, 0xc66bd3f9, 
+  0xe7038f5f, 0x9515929c, 0xebbf6d7a, 0xda955259, 
+  0x2dd4be83, 0xd3587421, 0x2949e069, 0x448ec9c8, 
+  0x6a75c289, 0x78f48e79, 0x6b99583e, 0xdd27b971, 
+  0xb6bee14f, 0x17f088ad, 0x66c920ac, 0xb47dce3a, 
+  0x1863df4a, 0x82e51a31, 0x60975133, 0x4562537f, 
+  0xe0b16477, 0x84bb6bae, 0x1cfe81a0, 0x94f9082b, 
+  0x58704868, 0x198f45fd, 0x8794de6c, 0xb7527bf8, 
+  0x23ab73d3, 0xe2724b02, 0x57e31f8f, 0x2a6655ab, 
+  0x7b2eb28, 0x32fb5c2, 0x9a86c57b, 0xa5d33708, 
+  0xf2302887, 0xb223bfa5, 0xba02036a, 0x5ced1682, 
+  0x2b8acf1c, 0x92a779b4, 0xf0f307f2, 0xa14e69e2, 
+  0xcd65daf4, 0xd50605be, 0x1fd13462, 0x8ac4a6fe, 
+  0x9d342e53, 0xa0a2f355, 0x32058ae1, 0x75a4f6eb, 
+  0x390b83ec, 0xaa4060ef, 0x65e719f, 0x51bd6e10, 
+  0xf93e218a, 0x3d96dd06, 0xaedd3e05, 0x464de6bd, 
+  0xb591548d, 0x571c45d, 0x6f0406d4, 0xff605015, 
+  0x241998fb, 0x97d6bde9, 0xcc894043, 0x7767d99e, 
+  0xbdb0e842, 0x8807898b, 0x38e7195b, 0xdb79c8ee, 
+  0x47a17c0a, 0xe97c420f, 0xc9f8841e, 0x0, 
+  0x83098086, 0x48322bed, 0xac1e1170, 0x4e6c5a72, 
+  0xfbfd0eff, 0x560f8538, 0x1e3daed5, 0x27362d39, 
+  0x640a0fd9, 0x21685ca6, 0xd19b5b54, 0x3a24362e, 
+  0xb10c0a67, 0xf9357e7, 0xd2b4ee96, 0x9e1b9b91, 
+  0x4f80c0c5, 0xa261dc20, 0x695a774b, 0x161c121a, 
+  0xae293ba, 0xe5c0a02a, 0x433c22e0, 0x1d121b17, 
+  0xb0e090d, 0xadf28bc7, 0xb92db6a8, 0xc8141ea9, 
+  0x8557f119, 0x4caf7507, 0xbbee99dd, 0xfda37f60, 
+  0x9ff70126, 0xbc5c72f5, 0xc544663b, 0x345bfb7e, 
+  0x768b4329, 0xdccb23c6, 0x68b6edfc, 0x63b8e4f1, 
+  0xcad731dc, 0x10426385, 0x40139722, 0x2084c611, 
+  0x7d854a24, 0xf8d2bb3d, 0x11aef932, 0x6dc729a1, 
+  0x4b1d9e2f, 0xf3dcb230, 0xec0d8652, 0xd077c1e3, 
+  0x6c2bb316, 0x99a970b9, 0xfa119448, 0x2247e964, 
+  0xc4a8fc8c, 0x1aa0f03f, 0xd8567d2c, 0xef223390, 
+  0xc787494e, 0xc1d938d1, 0xfe8ccaa2, 0x3698d40b, 
+  0xcfa6f581, 0x28a57ade, 0x26dab78e, 0xa43fadbf, 
+  0xe42c3a9d, 0xd507892, 0x9b6a5fcc, 0x62547e46, 
+  0xc2f68d13, 0xe890d8b8, 0x5e2e39f7, 0xf582c3af, 
+  0xbe9f5d80, 0x7c69d093, 0xa96fd52d, 0xb3cf2512, 
+  0x3bc8ac99, 0xa710187d, 0x6ee89c63, 0x7bdb3bbb, 
+  0x9cd2678, 0xf46e5918, 0x1ec9ab7, 0xa8834f9a, 
+  0x65e6956e, 0x7eaaffe6, 0x821bccf, 0xe6ef15e8, 
+  0xd9bae79b, 0xce4a6f36, 0xd4ea9f09, 0xd629b07c, 
+  0xaf31a4b2, 0x312a3f23, 0x30c6a594, 0xc035a266, 
+  0x37744ebc, 0xa6fc82ca, 0xb0e090d0, 0x1533a7d8, 
+  0x4af10498, 0xf741ecda, 0xe7fcd50, 0x2f1791f6, 
+  0x8d764dd6, 0x4d43efb0, 0x54ccaa4d, 0xdfe49604, 
+  0xe39ed1b5, 0x1b4c6a88, 0xb8c12c1f, 0x7f466551, 
+  0x49d5eea, 0x5d018c35, 0x73fa8774, 0x2efb0b41, 
+  0x5ab3671d, 0x5292dbd2, 0x33e91056, 0x136dd647, 
+  0x8c9ad761, 0x7a37a10c, 0x8e59f814, 0x89eb133c, 
+  0xeecea927, 0x35b761c9, 0xede11ce5, 0x3c7a47b1, 
+  0x599cd2df, 0x3f55f273, 0x791814ce, 0xbf73c737, 
+  0xea53f7cd, 0x5b5ffdaa, 0x14df3d6f, 0x867844db, 
+  0x81caaff3, 0x3eb968c4, 0x2c382434, 0x5fc2a340, 
+  0x72161dc3, 0xcbce225, 0x8b283c49, 0x41ff0d95, 
+  0x7139a801, 0xde080cb3, 0x9cd8b4e4, 0x906456c1, 
+  0x617bcb84, 0x70d532b6, 0x74486c5c, 0x42d0b857
+};
+
+static uint32_t U2[256] = {
+  0xa75051f4, 0x65537e41, 0xa4c31a17, 0x5e963a27, 
+  0x6bcb3bab, 0x45f11f9d, 0x58abacfa, 0x3934be3, 
+  0xfa552030, 0x6df6ad76, 0x769188cc, 0x4c25f502, 
+  0xd7fc4fe5, 0xcbd7c52a, 0x44802635, 0xa38fb562, 
+  0x5a49deb1, 0x1b6725ba, 0xe9845ea, 0xc0e15dfe, 
+  0x7502c32f, 0xf012814c, 0x97a38d46, 0xf9c66bd3, 
+  0x5fe7038f, 0x9c951592, 0x7aebbf6d, 0x59da9552, 
+  0x832dd4be, 0x21d35874, 0x692949e0, 0xc8448ec9, 
+  0x896a75c2, 0x7978f48e, 0x3e6b9958, 0x71dd27b9, 
+  0x4fb6bee1, 0xad17f088, 0xac66c920, 0x3ab47dce, 
+  0x4a1863df, 0x3182e51a, 0x33609751, 0x7f456253, 
+  0x77e0b164, 0xae84bb6b, 0xa01cfe81, 0x2b94f908, 
+  0x68587048, 0xfd198f45, 0x6c8794de, 0xf8b7527b, 
+  0xd323ab73, 0x2e2724b, 0x8f57e31f, 0xab2a6655, 
+  0x2807b2eb, 0xc2032fb5, 0x7b9a86c5, 0x8a5d337, 
+  0x87f23028, 0xa5b223bf, 0x6aba0203, 0x825ced16, 
+  0x1c2b8acf, 0xb492a779, 0xf2f0f307, 0xe2a14e69, 
+  0xf4cd65da, 0xbed50605, 0x621fd134, 0xfe8ac4a6, 
+  0x539d342e, 0x55a0a2f3, 0xe132058a, 0xeb75a4f6, 
+  0xec390b83, 0xefaa4060, 0x9f065e71, 0x1051bd6e, 
+  0x8af93e21, 0x63d96dd, 0x5aedd3e, 0xbd464de6, 
+  0x8db59154, 0x5d0571c4, 0xd46f0406, 0x15ff6050, 
+  0xfb241998, 0xe997d6bd, 0x43cc8940, 0x9e7767d9, 
+  0x42bdb0e8, 0x8b880789, 0x5b38e719, 0xeedb79c8, 
+  0xa47a17c, 0xfe97c42, 0x1ec9f884, 0x0, 
+  0x86830980, 0xed48322b, 0x70ac1e11, 0x724e6c5a, 
+  0xfffbfd0e, 0x38560f85, 0xd51e3dae, 0x3927362d, 
+  0xd9640a0f, 0xa621685c, 0x54d19b5b, 0x2e3a2436, 
+  0x67b10c0a, 0xe70f9357, 0x96d2b4ee, 0x919e1b9b, 
+  0xc54f80c0, 0x20a261dc, 0x4b695a77, 0x1a161c12, 
+  0xba0ae293, 0x2ae5c0a0, 0xe0433c22, 0x171d121b, 
+  0xd0b0e09, 0xc7adf28b, 0xa8b92db6, 0xa9c8141e, 
+  0x198557f1, 0x74caf75, 0xddbbee99, 0x60fda37f, 
+  0x269ff701, 0xf5bc5c72, 0x3bc54466, 0x7e345bfb, 
+  0x29768b43, 0xc6dccb23, 0xfc68b6ed, 0xf163b8e4, 
+  0xdccad731, 0x85104263, 0x22401397, 0x112084c6, 
+  0x247d854a, 0x3df8d2bb, 0x3211aef9, 0xa16dc729, 
+  0x2f4b1d9e, 0x30f3dcb2, 0x52ec0d86, 0xe3d077c1, 
+  0x166c2bb3, 0xb999a970, 0x48fa1194, 0x642247e9, 
+  0x8cc4a8fc, 0x3f1aa0f0, 0x2cd8567d, 0x90ef2233, 
+  0x4ec78749, 0xd1c1d938, 0xa2fe8cca, 0xb3698d4, 
+  0x81cfa6f5, 0xde28a57a, 0x8e26dab7, 0xbfa43fad, 
+  0x9de42c3a, 0x920d5078, 0xcc9b6a5f, 0x4662547e, 
+  0x13c2f68d, 0xb8e890d8, 0xf75e2e39, 0xaff582c3, 
+  0x80be9f5d, 0x937c69d0, 0x2da96fd5, 0x12b3cf25, 
+  0x993bc8ac, 0x7da71018, 0x636ee89c, 0xbb7bdb3b, 
+  0x7809cd26, 0x18f46e59, 0xb701ec9a, 0x9aa8834f, 
+  0x6e65e695, 0xe67eaaff, 0xcf0821bc, 0xe8e6ef15, 
+  0x9bd9bae7, 0x36ce4a6f, 0x9d4ea9f, 0x7cd629b0, 
+  0xb2af31a4, 0x23312a3f, 0x9430c6a5, 0x66c035a2, 
+  0xbc37744e, 0xcaa6fc82, 0xd0b0e090, 0xd81533a7, 
+  0x984af104, 0xdaf741ec, 0x500e7fcd, 0xf62f1791, 
+  0xd68d764d, 0xb04d43ef, 0x4d54ccaa, 0x4dfe496, 
+  0xb5e39ed1, 0x881b4c6a, 0x1fb8c12c, 0x517f4665, 
+  0xea049d5e, 0x355d018c, 0x7473fa87, 0x412efb0b, 
+  0x1d5ab367, 0xd25292db, 0x5633e910, 0x47136dd6, 
+  0x618c9ad7, 0xc7a37a1, 0x148e59f8, 0x3c89eb13, 
+  0x27eecea9, 0xc935b761, 0xe5ede11c, 0xb13c7a47, 
+  0xdf599cd2, 0x733f55f2, 0xce791814, 0x37bf73c7, 
+  0xcdea53f7, 0xaa5b5ffd, 0x6f14df3d, 0xdb867844, 
+  0xf381caaf, 0xc43eb968, 0x342c3824, 0x405fc2a3, 
+  0xc372161d, 0x250cbce2, 0x498b283c, 0x9541ff0d, 
+  0x17139a8, 0xb3de080c, 0xe49cd8b4, 0xc1906456, 
+  0x84617bcb, 0xb670d532, 0x5c74486c, 0x5742d0b8 
+};
+
+static uint32_t U3[256] = {
+  0xf4a75051, 0x4165537e, 0x17a4c31a, 0x275e963a, 
+  0xab6bcb3b, 0x9d45f11f, 0xfa58abac, 0xe303934b, 
+  0x30fa5520, 0x766df6ad, 0xcc769188, 0x24c25f5, 
+  0xe5d7fc4f, 0x2acbd7c5, 0x35448026, 0x62a38fb5, 
+  0xb15a49de, 0xba1b6725, 0xea0e9845, 0xfec0e15d, 
+  0x2f7502c3, 0x4cf01281, 0x4697a38d, 0xd3f9c66b, 
+  0x8f5fe703, 0x929c9515, 0x6d7aebbf, 0x5259da95, 
+  0xbe832dd4, 0x7421d358, 0xe0692949, 0xc9c8448e, 
+  0xc2896a75, 0x8e7978f4, 0x583e6b99, 0xb971dd27, 
+  0xe14fb6be, 0x88ad17f0, 0x20ac66c9, 0xce3ab47d, 
+  0xdf4a1863, 0x1a3182e5, 0x51336097, 0x537f4562, 
+  0x6477e0b1, 0x6bae84bb, 0x81a01cfe, 0x82b94f9, 
+  0x48685870, 0x45fd198f, 0xde6c8794, 0x7bf8b752, 
+  0x73d323ab, 0x4b02e272, 0x1f8f57e3, 0x55ab2a66, 
+  0xeb2807b2, 0xb5c2032f, 0xc57b9a86, 0x3708a5d3, 
+  0x2887f230, 0xbfa5b223, 0x36aba02, 0x16825ced, 
+  0xcf1c2b8a, 0x79b492a7, 0x7f2f0f3, 0x69e2a14e, 
+  0xdaf4cd65, 0x5bed506, 0x34621fd1, 0xa6fe8ac4, 
+  0x2e539d34, 0xf355a0a2, 0x8ae13205, 0xf6eb75a4, 
+  0x83ec390b, 0x60efaa40, 0x719f065e, 0x6e1051bd, 
+  0x218af93e, 0xdd063d96, 0x3e05aedd, 0xe6bd464d, 
+  0x548db591, 0xc45d0571, 0x6d46f04, 0x5015ff60, 
+  0x98fb2419, 0xbde997d6, 0x4043cc89, 0xd99e7767, 
+  0xe842bdb0, 0x898b8807, 0x195b38e7, 0xc8eedb79, 
+  0x7c0a47a1, 0x420fe97c, 0x841ec9f8, 0x0, 
+  0x80868309, 0x2bed4832, 0x1170ac1e, 0x5a724e6c, 
+  0xefffbfd, 0x8538560f, 0xaed51e3d, 0x2d392736, 
+  0xfd9640a, 0x5ca62168, 0x5b54d19b, 0x362e3a24, 
+  0xa67b10c, 0x57e70f93, 0xee96d2b4, 0x9b919e1b, 
+  0xc0c54f80, 0xdc20a261, 0x774b695a, 0x121a161c, 
+  0x93ba0ae2, 0xa02ae5c0, 0x22e0433c, 0x1b171d12, 
+  0x90d0b0e, 0x8bc7adf2, 0xb6a8b92d, 0x1ea9c814, 
+  0xf1198557, 0x75074caf, 0x99ddbbee, 0x7f60fda3, 
+  0x1269ff7, 0x72f5bc5c, 0x663bc544, 0xfb7e345b, 
+  0x4329768b, 0x23c6dccb, 0xedfc68b6, 0xe4f163b8, 
+  0x31dccad7, 0x63851042, 0x97224013, 0xc6112084, 
+  0x4a247d85, 0xbb3df8d2, 0xf93211ae, 0x29a16dc7, 
+  0x9e2f4b1d, 0xb230f3dc, 0x8652ec0d, 0xc1e3d077, 
+  0xb3166c2b, 0x70b999a9, 0x9448fa11, 0xe9642247, 
+  0xfc8cc4a8, 0xf03f1aa0, 0x7d2cd856, 0x3390ef22, 
+  0x494ec787, 0x38d1c1d9, 0xcaa2fe8c, 0xd40b3698, 
+  0xf581cfa6, 0x7ade28a5, 0xb78e26da, 0xadbfa43f, 
+  0x3a9de42c, 0x78920d50, 0x5fcc9b6a, 0x7e466254, 
+  0x8d13c2f6, 0xd8b8e890, 0x39f75e2e, 0xc3aff582, 
+  0x5d80be9f, 0xd0937c69, 0xd52da96f, 0x2512b3cf, 
+  0xac993bc8, 0x187da710, 0x9c636ee8, 0x3bbb7bdb, 
+  0x267809cd, 0x5918f46e, 0x9ab701ec, 0x4f9aa883, 
+  0x956e65e6, 0xffe67eaa, 0xbccf0821, 0x15e8e6ef, 
+  0xe79bd9ba, 0x6f36ce4a, 0x9f09d4ea, 0xb07cd629, 
+  0xa4b2af31, 0x3f23312a, 0xa59430c6, 0xa266c035, 
+  0x4ebc3774, 0x82caa6fc, 0x90d0b0e0, 0xa7d81533, 
+  0x4984af1, 0xecdaf741, 0xcd500e7f, 0x91f62f17, 
+  0x4dd68d76, 0xefb04d43, 0xaa4d54cc, 0x9604dfe4, 
+  0xd1b5e39e, 0x6a881b4c, 0x2c1fb8c1, 0x65517f46, 
+  0x5eea049d, 0x8c355d01, 0x877473fa, 0xb412efb, 
+  0x671d5ab3, 0xdbd25292, 0x105633e9, 0xd647136d, 
+  0xd7618c9a, 0xa10c7a37, 0xf8148e59, 0x133c89eb, 
+  0xa927eece, 0x61c935b7, 0x1ce5ede1, 0x47b13c7a, 
+  0xd2df599c, 0xf2733f55, 0x14ce7918, 0xc737bf73, 
+  0xf7cdea53, 0xfdaa5b5f, 0x3d6f14df, 0x44db8678, 
+  0xaff381ca, 0x68c43eb9, 0x24342c38, 0xa3405fc2, 
+  0x1dc37216, 0xe2250cbc, 0x3c498b28, 0xd9541ff, 
+  0xa8017139, 0xcb3de08, 0xb4e49cd8, 0x56c19064, 
+  0xcb84617b, 0x32b670d5, 0x6c5c7448, 0xb85742d0 
+};
+
+#endif
+
+/* 
+ * the following tables (aes_sbox, aes_inv_sbox, T4, U4) are
+ * endian-neutral 
+ */
+
+static uint8_t
+aes_sbox[256] = {
+  0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 
+  0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, 
+  0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 
+  0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 
+  0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 
+  0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, 
+  0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 
+  0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 
+  0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 
+  0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 
+  0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 
+  0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 
+  0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 
+  0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 
+  0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 
+  0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 
+  0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 
+  0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, 
+  0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 
+  0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 
+  0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 
+  0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 
+  0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 
+  0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, 
+  0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 
+  0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 
+  0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 
+  0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 
+  0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 
+  0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, 
+  0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 
+  0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 
+};
+
+#ifndef CPU_RISC
+static uint8_t
+aes_inv_sbox[256] = {
+  0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 
+  0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
+  0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87,
+  0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
+  0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 
+  0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
+  0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2,
+  0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
+  0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 
+  0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
+  0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 
+  0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
+  0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 
+  0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
+  0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 
+  0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
+  0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 
+  0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
+  0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 
+  0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
+  0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 
+  0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
+  0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 
+  0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
+  0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 
+  0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
+  0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 
+  0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
+  0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 
+  0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
+  0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 
+  0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
+};
+#endif /* ! CPU_RISC */
+
+#ifdef CPU_RISC
+static uint32_t
+T4[256] = { 
+  0x63636363, 0x7c7c7c7c, 0x77777777, 0x7b7b7b7b,
+  0xf2f2f2f2, 0x6b6b6b6b, 0x6f6f6f6f, 0xc5c5c5c5, 
+  0x30303030, 0x01010101, 0x67676767, 0x2b2b2b2b, 
+  0xfefefefe, 0xd7d7d7d7, 0xabababab, 0x76767676, 
+  0xcacacaca, 0x82828282, 0xc9c9c9c9, 0x7d7d7d7d, 
+  0xfafafafa, 0x59595959, 0x47474747, 0xf0f0f0f0,
+  0xadadadad, 0xd4d4d4d4, 0xa2a2a2a2, 0xafafafaf,
+  0x9c9c9c9c, 0xa4a4a4a4, 0x72727272, 0xc0c0c0c0,
+  0xb7b7b7b7, 0xfdfdfdfd, 0x93939393, 0x26262626,
+  0x36363636, 0x3f3f3f3f, 0xf7f7f7f7, 0xcccccccc,
+  0x34343434, 0xa5a5a5a5, 0xe5e5e5e5, 0xf1f1f1f1,
+  0x71717171, 0xd8d8d8d8, 0x31313131, 0x15151515,
+  0x04040404, 0xc7c7c7c7, 0x23232323, 0xc3c3c3c3,
+  0x18181818, 0x96969696, 0x05050505, 0x9a9a9a9a,
+  0x07070707, 0x12121212, 0x80808080, 0xe2e2e2e2,
+  0xebebebeb, 0x27272727, 0xb2b2b2b2, 0x75757575,
+  0x09090909, 0x83838383, 0x2c2c2c2c, 0x1a1a1a1a, 
+  0x1b1b1b1b, 0x6e6e6e6e, 0x5a5a5a5a, 0xa0a0a0a0,
+  0x52525252, 0x3b3b3b3b, 0xd6d6d6d6, 0xb3b3b3b3,
+  0x29292929, 0xe3e3e3e3, 0x2f2f2f2f, 0x84848484,
+  0x53535353, 0xd1d1d1d1, 0x00000000, 0xedededed,
+  0x20202020, 0xfcfcfcfc, 0xb1b1b1b1, 0x5b5b5b5b,
+  0x6a6a6a6a, 0xcbcbcbcb, 0xbebebebe, 0x39393939,
+  0x4a4a4a4a, 0x4c4c4c4c, 0x58585858, 0xcfcfcfcf,
+  0xd0d0d0d0, 0xefefefef, 0xaaaaaaaa, 0xfbfbfbfb,
+  0x43434343, 0x4d4d4d4d, 0x33333333, 0x85858585,
+  0x45454545, 0xf9f9f9f9, 0x02020202, 0x7f7f7f7f,
+  0x50505050, 0x3c3c3c3c, 0x9f9f9f9f, 0xa8a8a8a8,
+  0x51515151, 0xa3a3a3a3, 0x40404040, 0x8f8f8f8f,
+  0x92929292, 0x9d9d9d9d, 0x38383838, 0xf5f5f5f5,
+  0xbcbcbcbc, 0xb6b6b6b6, 0xdadadada, 0x21212121,
+  0x10101010, 0xffffffff, 0xf3f3f3f3, 0xd2d2d2d2,
+  0xcdcdcdcd, 0x0c0c0c0c, 0x13131313, 0xecececec,
+  0x5f5f5f5f, 0x97979797, 0x44444444, 0x17171717,
+  0xc4c4c4c4, 0xa7a7a7a7, 0x7e7e7e7e, 0x3d3d3d3d,
+  0x64646464, 0x5d5d5d5d, 0x19191919, 0x73737373,
+  0x60606060, 0x81818181, 0x4f4f4f4f, 0xdcdcdcdc,
+  0x22222222, 0x2a2a2a2a, 0x90909090, 0x88888888,
+  0x46464646, 0xeeeeeeee, 0xb8b8b8b8, 0x14141414, 
+  0xdededede, 0x5e5e5e5e, 0x0b0b0b0b, 0xdbdbdbdb, 
+  0xe0e0e0e0, 0x32323232, 0x3a3a3a3a, 0x0a0a0a0a,
+  0x49494949, 0x06060606, 0x24242424, 0x5c5c5c5c,
+  0xc2c2c2c2, 0xd3d3d3d3, 0xacacacac, 0x62626262, 
+  0x91919191, 0x95959595, 0xe4e4e4e4, 0x79797979,
+  0xe7e7e7e7, 0xc8c8c8c8, 0x37373737, 0x6d6d6d6d,
+  0x8d8d8d8d, 0xd5d5d5d5, 0x4e4e4e4e, 0xa9a9a9a9, 
+  0x6c6c6c6c, 0x56565656, 0xf4f4f4f4, 0xeaeaeaea,
+  0x65656565, 0x7a7a7a7a, 0xaeaeaeae, 0x08080808, 
+  0xbabababa, 0x78787878, 0x25252525, 0x2e2e2e2e,
+  0x1c1c1c1c, 0xa6a6a6a6, 0xb4b4b4b4, 0xc6c6c6c6,
+  0xe8e8e8e8, 0xdddddddd, 0x74747474, 0x1f1f1f1f,
+  0x4b4b4b4b, 0xbdbdbdbd, 0x8b8b8b8b, 0x8a8a8a8a,
+  0x70707070, 0x3e3e3e3e, 0xb5b5b5b5, 0x66666666,
+  0x48484848, 0x03030303, 0xf6f6f6f6, 0x0e0e0e0e,
+  0x61616161, 0x35353535, 0x57575757, 0xb9b9b9b9,
+  0x86868686, 0xc1c1c1c1, 0x1d1d1d1d, 0x9e9e9e9e,
+  0xe1e1e1e1, 0xf8f8f8f8, 0x98989898, 0x11111111, 
+  0x69696969, 0xd9d9d9d9, 0x8e8e8e8e, 0x94949494,
+  0x9b9b9b9b, 0x1e1e1e1e, 0x87878787, 0xe9e9e9e9,
+  0xcececece, 0x55555555, 0x28282828, 0xdfdfdfdf,
+  0x8c8c8c8c, 0xa1a1a1a1, 0x89898989, 0x0d0d0d0d,
+  0xbfbfbfbf, 0xe6e6e6e6, 0x42424242, 0x68686868,
+  0x41414141, 0x99999999, 0x2d2d2d2d, 0x0f0f0f0f,
+  0xb0b0b0b0, 0x54545454, 0xbbbbbbbb, 0x16161616
+};
+
+static uint32_t U4[256] = {
+  0x52525252, 0x9090909, 0x6a6a6a6a, 0xd5d5d5d5, 
+  0x30303030, 0x36363636, 0xa5a5a5a5, 0x38383838, 
+  0xbfbfbfbf, 0x40404040, 0xa3a3a3a3, 0x9e9e9e9e, 
+  0x81818181, 0xf3f3f3f3, 0xd7d7d7d7, 0xfbfbfbfb, 
+  0x7c7c7c7c, 0xe3e3e3e3, 0x39393939, 0x82828282, 
+  0x9b9b9b9b, 0x2f2f2f2f, 0xffffffff, 0x87878787, 
+  0x34343434, 0x8e8e8e8e, 0x43434343, 0x44444444, 
+  0xc4c4c4c4, 0xdededede, 0xe9e9e9e9, 0xcbcbcbcb, 
+  0x54545454, 0x7b7b7b7b, 0x94949494, 0x32323232, 
+  0xa6a6a6a6, 0xc2c2c2c2, 0x23232323, 0x3d3d3d3d, 
+  0xeeeeeeee, 0x4c4c4c4c, 0x95959595, 0xb0b0b0b, 
+  0x42424242, 0xfafafafa, 0xc3c3c3c3, 0x4e4e4e4e, 
+  0x8080808, 0x2e2e2e2e, 0xa1a1a1a1, 0x66666666, 
+  0x28282828, 0xd9d9d9d9, 0x24242424, 0xb2b2b2b2, 
+  0x76767676, 0x5b5b5b5b, 0xa2a2a2a2, 0x49494949, 
+  0x6d6d6d6d, 0x8b8b8b8b, 0xd1d1d1d1, 0x25252525, 
+  0x72727272, 0xf8f8f8f8, 0xf6f6f6f6, 0x64646464, 
+  0x86868686, 0x68686868, 0x98989898, 0x16161616, 
+  0xd4d4d4d4, 0xa4a4a4a4, 0x5c5c5c5c, 0xcccccccc, 
+  0x5d5d5d5d, 0x65656565, 0xb6b6b6b6, 0x92929292, 
+  0x6c6c6c6c, 0x70707070, 0x48484848, 0x50505050, 
+  0xfdfdfdfd, 0xedededed, 0xb9b9b9b9, 0xdadadada, 
+  0x5e5e5e5e, 0x15151515, 0x46464646, 0x57575757, 
+  0xa7a7a7a7, 0x8d8d8d8d, 0x9d9d9d9d, 0x84848484, 
+  0x90909090, 0xd8d8d8d8, 0xabababab, 0x0, 
+  0x8c8c8c8c, 0xbcbcbcbc, 0xd3d3d3d3, 0xa0a0a0a, 
+  0xf7f7f7f7, 0xe4e4e4e4, 0x58585858, 0x5050505, 
+  0xb8b8b8b8, 0xb3b3b3b3, 0x45454545, 0x6060606, 
+  0xd0d0d0d0, 0x2c2c2c2c, 0x1e1e1e1e, 0x8f8f8f8f, 
+  0xcacacaca, 0x3f3f3f3f, 0xf0f0f0f, 0x2020202, 
+  0xc1c1c1c1, 0xafafafaf, 0xbdbdbdbd, 0x3030303, 
+  0x1010101, 0x13131313, 0x8a8a8a8a, 0x6b6b6b6b, 
+  0x3a3a3a3a, 0x91919191, 0x11111111, 0x41414141, 
+  0x4f4f4f4f, 0x67676767, 0xdcdcdcdc, 0xeaeaeaea, 
+  0x97979797, 0xf2f2f2f2, 0xcfcfcfcf, 0xcececece, 
+  0xf0f0f0f0, 0xb4b4b4b4, 0xe6e6e6e6, 0x73737373, 
+  0x96969696, 0xacacacac, 0x74747474, 0x22222222, 
+  0xe7e7e7e7, 0xadadadad, 0x35353535, 0x85858585, 
+  0xe2e2e2e2, 0xf9f9f9f9, 0x37373737, 0xe8e8e8e8, 
+  0x1c1c1c1c, 0x75757575, 0xdfdfdfdf, 0x6e6e6e6e, 
+  0x47474747, 0xf1f1f1f1, 0x1a1a1a1a, 0x71717171, 
+  0x1d1d1d1d, 0x29292929, 0xc5c5c5c5, 0x89898989, 
+  0x6f6f6f6f, 0xb7b7b7b7, 0x62626262, 0xe0e0e0e, 
+  0xaaaaaaaa, 0x18181818, 0xbebebebe, 0x1b1b1b1b, 
+  0xfcfcfcfc, 0x56565656, 0x3e3e3e3e, 0x4b4b4b4b, 
+  0xc6c6c6c6, 0xd2d2d2d2, 0x79797979, 0x20202020, 
+  0x9a9a9a9a, 0xdbdbdbdb, 0xc0c0c0c0, 0xfefefefe, 
+  0x78787878, 0xcdcdcdcd, 0x5a5a5a5a, 0xf4f4f4f4, 
+  0x1f1f1f1f, 0xdddddddd, 0xa8a8a8a8, 0x33333333, 
+  0x88888888, 0x7070707, 0xc7c7c7c7, 0x31313131, 
+  0xb1b1b1b1, 0x12121212, 0x10101010, 0x59595959, 
+  0x27272727, 0x80808080, 0xecececec, 0x5f5f5f5f, 
+  0x60606060, 0x51515151, 0x7f7f7f7f, 0xa9a9a9a9, 
+  0x19191919, 0xb5b5b5b5, 0x4a4a4a4a, 0xd0d0d0d, 
+  0x2d2d2d2d, 0xe5e5e5e5, 0x7a7a7a7a, 0x9f9f9f9f, 
+  0x93939393, 0xc9c9c9c9, 0x9c9c9c9c, 0xefefefef, 
+  0xa0a0a0a0, 0xe0e0e0e0, 0x3b3b3b3b, 0x4d4d4d4d, 
+  0xaeaeaeae, 0x2a2a2a2a, 0xf5f5f5f5, 0xb0b0b0b0, 
+  0xc8c8c8c8, 0xebebebeb, 0xbbbbbbbb, 0x3c3c3c3c, 
+  0x83838383, 0x53535353, 0x99999999, 0x61616161, 
+  0x17171717, 0x2b2b2b2b, 0x4040404, 0x7e7e7e7e, 
+  0xbabababa, 0x77777777, 0xd6d6d6d6, 0x26262626, 
+  0xe1e1e1e1, 0x69696969, 0x14141414, 0x63636363, 
+  0x55555555, 0x21212121, 0xc0c0c0c, 0x7d7d7d7d
+};
+#endif /* CPU_RISC */
+
+
+/* aes internals */
+
+extern debug_module_t mod_aes_icm;
+
+void
+aes_expand_encryption_key(const v128_t *key, 
+			  aes_expanded_key_t expanded_key) {
+  int i;
+  gf2_8 rc;
+
+  /* initialize round constant */
+  rc = 1;
+
+  expanded_key[0].v32[0] = key->v32[0];
+  expanded_key[0].v32[1] = key->v32[1];
+  expanded_key[0].v32[2] = key->v32[2];
+  expanded_key[0].v32[3] = key->v32[3];
+
+#if 0
+  debug_print(mod_aes_icm, 
+	      "expanded key[0]:  %s", v128_hex_string(&expanded_key[0])); 
+#endif
+
+  /* loop over round keys */
+  for (i=1; i < 11; i++) {
+
+    /* munge first word of round key */
+    expanded_key[i].v8[0] = aes_sbox[expanded_key[i-1].v8[13]] ^ rc;
+    expanded_key[i].v8[1] = aes_sbox[expanded_key[i-1].v8[14]];
+    expanded_key[i].v8[2] = aes_sbox[expanded_key[i-1].v8[15]];
+    expanded_key[i].v8[3] = aes_sbox[expanded_key[i-1].v8[12]];
+
+    expanded_key[i].v32[0] ^=  expanded_key[i-1].v32[0];
+
+    /* set remaining 32 bit words to the exor of the one previous with
+     * the one four words previous */
+
+    expanded_key[i].v32[1] =
+      expanded_key[i].v32[0] ^ expanded_key[i-1].v32[1];
+
+    expanded_key[i].v32[2] =
+      expanded_key[i].v32[1] ^ expanded_key[i-1].v32[2];
+
+    expanded_key[i].v32[3] =
+      expanded_key[i].v32[2] ^ expanded_key[i-1].v32[3];
+
+#if 0
+	debug_print2(mod_aes_icm, 
+				"expanded key[%d]:  %s", i,v128_hex_string(&expanded_key[i])); 
+#endif
+
+    /* modify round constant */
+    rc = gf2_8_shift(rc);
+
+  }
+}
+
+void
+aes_expand_decryption_key(const v128_t *key, 
+			  aes_expanded_key_t expanded_key) {
+  int i;
+
+  aes_expand_encryption_key(key, expanded_key);
+
+  /* invert the order of the round keys */
+  for (i=0; i < 5; i++) {
+    v128_t tmp;
+    v128_copy(&tmp, &expanded_key[10-i]);
+    v128_copy(&expanded_key[10-i], &expanded_key[i]);
+    v128_copy(&expanded_key[i], &tmp);
+  }
+
+  /* 
+   * apply the inverse mixColumn transform to the round keys (except
+   * for the first and the last)  
+   *
+   * mixColumn is implemented by using the tables U0, U1, U2, U3,
+   * followed by the T4 table (which cancels out the use of the sbox
+   * in the U-tables)
+   */
+  for (i=1; i < 10; i++) {
+#ifdef CPU_RISC
+    uint32_t tmp;
+
+    tmp = expanded_key[i].v32[0];
+    expanded_key[i].v32[0] = 
+      U0[T4[(tmp >> 24)       ] & 0xff] ^ 
+      U1[T4[(tmp >> 16) & 0xff] & 0xff] ^ 
+      U2[T4[(tmp >> 8)  & 0xff] & 0xff] ^ 
+      U3[T4[(tmp)       & 0xff] & 0xff];
+
+    tmp = expanded_key[i].v32[1];
+    expanded_key[i].v32[1] = 
+      U0[T4[(tmp >> 24)       ] & 0xff] ^ 
+      U1[T4[(tmp >> 16) & 0xff] & 0xff] ^ 
+      U2[T4[(tmp >> 8)  & 0xff] & 0xff] ^ 
+      U3[T4[(tmp)       & 0xff] & 0xff];
+
+    tmp = expanded_key[i].v32[2];
+    expanded_key[i].v32[2] = 
+      U0[T4[(tmp >> 24)       ] & 0xff] ^ 
+      U1[T4[(tmp >> 16) & 0xff] & 0xff] ^ 
+      U2[T4[(tmp >> 8)  & 0xff] & 0xff] ^ 
+      U3[T4[(tmp)       & 0xff] & 0xff];
+
+    tmp = expanded_key[i].v32[3];
+    expanded_key[i].v32[3] = 
+      U0[T4[(tmp >> 24)       ] & 0xff] ^ 
+      U1[T4[(tmp >> 16) & 0xff] & 0xff] ^ 
+      U2[T4[(tmp >> 8)  & 0xff] & 0xff] ^ 
+      U3[T4[(tmp)       & 0xff] & 0xff];
+#else /* assume CPU_CISC */
+
+    uint32_t c0, c1, c2, c3;
+
+    c0 = U0[aes_sbox[expanded_key[i].v8[0]]] 
+       ^ U1[aes_sbox[expanded_key[i].v8[1]]] 
+       ^ U2[aes_sbox[expanded_key[i].v8[2]]] 
+       ^ U3[aes_sbox[expanded_key[i].v8[3]]];
+
+    c1 = U0[aes_sbox[expanded_key[i].v8[4]]] 
+       ^ U1[aes_sbox[expanded_key[i].v8[5]]] 
+       ^ U2[aes_sbox[expanded_key[i].v8[6]]] 
+       ^ U3[aes_sbox[expanded_key[i].v8[7]]];
+
+    c2 = U0[aes_sbox[expanded_key[i].v8[8]]] 
+       ^ U1[aes_sbox[expanded_key[i].v8[9]]] 
+       ^ U2[aes_sbox[expanded_key[i].v8[10]]] 
+       ^ U3[aes_sbox[expanded_key[i].v8[11]]];
+
+    c3 = U0[aes_sbox[expanded_key[i].v8[12]]] 
+       ^ U1[aes_sbox[expanded_key[i].v8[13]]] 
+       ^ U2[aes_sbox[expanded_key[i].v8[14]]] 
+       ^ U3[aes_sbox[expanded_key[i].v8[15]]];
+
+    expanded_key[i].v32[0] = c0;
+    expanded_key[i].v32[1] = c1;
+    expanded_key[i].v32[2] = c2;
+    expanded_key[i].v32[3] = c3;
+
+#endif     
+  }
+}
+
+#ifdef CPU_CISC
+
+
+static inline void
+aes_round(v128_t *state, const v128_t *round_key) {
+  uint32_t column0, column1, column2, column3;
+
+  /* compute the columns of the output square in terms of the octets
+     of state, using the tables T0, T1, T2, T3 */
+
+  column0 = T0[state->v8[0]] ^ T1[state->v8[5]]
+    ^ T2[state->v8[10]] ^ T3[state->v8[15]];
+
+  column1 = T0[state->v8[4]] ^ T1[state->v8[9]]
+    ^ T2[state->v8[14]] ^ T3[state->v8[3]];
+
+  column2 = T0[state->v8[8]] ^ T1[state->v8[13]]
+    ^ T2[state->v8[2]] ^ T3[state->v8[7]];
+
+  column3 = T0[state->v8[12]] ^ T1[state->v8[1]]
+    ^ T2[state->v8[6]] ^ T3[state->v8[11]];
+
+  state->v32[0] = column0 ^ round_key->v32[0];
+  state->v32[1] = column1 ^ round_key->v32[1];
+  state->v32[2] = column2 ^ round_key->v32[2];
+  state->v32[3] = column3 ^ round_key->v32[3];
+
+}
+
+
+static inline void
+aes_inv_round(v128_t *state, const v128_t *round_key) {
+  uint32_t column0, column1, column2, column3;
+
+  /* compute the columns of the output square in terms of the octets
+     of state, using the tables U0, U1, U2, U3 */
+
+  column0 = U0[state->v8[0]] ^ U1[state->v8[13]]
+    ^ U2[state->v8[10]] ^ U3[state->v8[7]];
+
+  column1 = U0[state->v8[4]] ^ U1[state->v8[1]]
+    ^ U2[state->v8[14]] ^ U3[state->v8[11]];
+
+  column2 = U0[state->v8[8]] ^ U1[state->v8[5]]
+    ^ U2[state->v8[2]] ^ U3[state->v8[15]];
+
+  column3 = U0[state->v8[12]] ^ U1[state->v8[9]]
+    ^ U2[state->v8[6]] ^ U3[state->v8[3]];
+
+  state->v32[0] = column0 ^ round_key->v32[0];
+  state->v32[1] = column1 ^ round_key->v32[1];
+  state->v32[2] = column2 ^ round_key->v32[2];
+  state->v32[3] = column3 ^ round_key->v32[3];
+
+}
+
+static inline void
+aes_final_round(v128_t *state, const v128_t *round_key) {
+  uint8_t tmp;
+
+  /* byte substitutions and row shifts */
+  /* first row - no shift */
+  state->v8[0] = aes_sbox[state->v8[0]];
+  state->v8[4] = aes_sbox[state->v8[4]];
+  state->v8[8] = aes_sbox[state->v8[8]];
+  state->v8[12] = aes_sbox[state->v8[12]];
+
+  /* second row - shift one left */
+  tmp = aes_sbox[state->v8[1]];
+  state->v8[1] = aes_sbox[state->v8[5]];
+  state->v8[5] = aes_sbox[state->v8[9]];
+  state->v8[9] = aes_sbox[state->v8[13]];
+  state->v8[13] = tmp;
+
+  /* third row - shift two left */
+  tmp = aes_sbox[state->v8[10]];
+  state->v8[10] = aes_sbox[state->v8[2]];
+  state->v8[2] = tmp;
+  tmp = aes_sbox[state->v8[14]];
+  state->v8[14] = aes_sbox[state->v8[6]];
+  state->v8[6] = tmp; 
+
+  /* fourth row - shift three left */
+  tmp = aes_sbox[state->v8[15]];
+  state->v8[15] = aes_sbox[state->v8[11]];
+  state->v8[11] = aes_sbox[state->v8[7]];
+  state->v8[7] = aes_sbox[state->v8[3]];
+  state->v8[3] = tmp;
+
+  v128_xor_eq(state, round_key);
+}
+
+static inline void
+aes_inv_final_round(v128_t *state, const v128_t *round_key) {
+  uint8_t tmp;
+
+  /* byte substitutions and row shifts */
+  /* first row - no shift */
+  state->v8[0] = aes_inv_sbox[state->v8[0]];
+  state->v8[4] = aes_inv_sbox[state->v8[4]];
+  state->v8[8] = aes_inv_sbox[state->v8[8]];
+  state->v8[12] = aes_inv_sbox[state->v8[12]];
+
+  /* second row - shift one right */
+  tmp = aes_inv_sbox[state->v8[13]];
+  state->v8[13] = aes_inv_sbox[state->v8[9]];
+  state->v8[9] = aes_inv_sbox[state->v8[5]];
+  state->v8[5] = aes_inv_sbox[state->v8[1]];
+  state->v8[1] = tmp;
+
+  /* third row - shift two right */
+  tmp = aes_inv_sbox[state->v8[2]];
+  state->v8[2] = aes_inv_sbox[state->v8[10]];
+  state->v8[10] = tmp;
+  tmp = aes_inv_sbox[state->v8[6]];
+  state->v8[6] = aes_inv_sbox[state->v8[14]];
+  state->v8[14] = tmp; 
+
+  /* fourth row - shift three right */
+  tmp = aes_inv_sbox[state->v8[3]];
+  state->v8[3] = aes_inv_sbox[state->v8[7]];
+  state->v8[7] = aes_inv_sbox[state->v8[11]];
+  state->v8[11] = aes_inv_sbox[state->v8[15]];
+  state->v8[15] = tmp;
+
+  v128_xor_eq(state, round_key);
+}
+
+
+#elif CPU_RISC
+
+static inline void
+aes_round(v128_t *state, const v128_t *round_key) {
+  uint32_t column0, column1, column2, column3;
+
+  /* compute the columns of the output square in terms of the octets
+     of state, using the tables T0, T1, T2, T3 */
+#ifdef WORDS_BIGENDIAN
+  column0 = T0[state->v32[0] >> 24] ^ T1[(state->v32[1] >> 16) & 0xff]
+    ^ T2[(state->v32[2] >> 8) & 0xff] ^ T3[state->v32[3] & 0xff];
+
+  column1 = T0[state->v32[1] >> 24] ^ T1[(state->v32[2] >> 16) & 0xff]
+    ^ T2[(state->v32[3] >> 8) & 0xff] ^ T3[state->v32[0] & 0xff];
+
+  column2 = T0[state->v32[2] >> 24] ^ T1[(state->v32[3] >> 16) & 0xff]
+    ^ T2[(state->v32[0] >> 8) & 0xff] ^ T3[state->v32[1] & 0xff];
+
+  column3 = T0[state->v32[3] >> 24] ^ T1[(state->v32[0] >> 16) & 0xff]
+    ^ T2[(state->v32[1] >> 8) & 0xff] ^ T3[state->v32[2] & 0xff];
+#else
+  column0 = T0[state->v32[0] & 0xff] ^ T1[(state->v32[1] >> 8) & 0xff]
+	^ T2[(state->v32[2] >> 16) & 0xff] ^ T3[state->v32[3] >> 24];
+
+  column1 = T0[state->v32[1] & 0xff] ^ T1[(state->v32[2] >> 8) & 0xff]
+	^ T2[(state->v32[3] >> 16) & 0xff] ^ T3[state->v32[0] >> 24];
+
+  column2 = T0[state->v32[2] & 0xff] ^ T1[(state->v32[3] >> 8) & 0xff]
+	^ T2[(state->v32[0] >> 16) & 0xff] ^ T3[state->v32[1] >> 24];
+
+  column3 = T0[state->v32[3] & 0xff] ^ T1[(state->v32[0] >> 8) & 0xff]
+	^ T2[(state->v32[1] >> 16) & 0xff] ^ T3[state->v32[2] >> 24];
+#endif /* WORDS_BIGENDIAN */
+
+  state->v32[0] = column0 ^ round_key->v32[0];
+  state->v32[1] = column1 ^ round_key->v32[1];
+  state->v32[2] = column2 ^ round_key->v32[2];
+  state->v32[3] = column3 ^ round_key->v32[3];
+
+}
+
+static inline void
+aes_inv_round(v128_t *state, const v128_t *round_key) {
+  uint32_t column0, column1, column2, column3;
+
+  /* compute the columns of the output square in terms of the octets
+     of state, using the tables U0, U1, U2, U3 */
+
+#ifdef WORDS_BIGENDIAN
+  /* FIX!  WRong indexes */
+  column0 = U0[state->v32[0] >> 24] ^ U1[(state->v32[3] >> 16) & 0xff]
+    ^ U2[(state->v32[2] >> 8) & 0xff] ^ U3[state->v32[1] & 0xff];
+
+  column1 = U0[state->v32[1] >> 24] ^ U1[(state->v32[0] >> 16) & 0xff]
+    ^ U2[(state->v32[3] >> 8) & 0xff] ^ U3[state->v32[2] & 0xff];
+
+  column2 = U0[state->v32[2] >> 24] ^ U1[(state->v32[1] >> 16) & 0xff]
+    ^ U2[(state->v32[0] >> 8) & 0xff] ^ U3[state->v32[3] & 0xff];
+
+  column3 = U0[state->v32[3] >> 24] ^ U1[(state->v32[2] >> 16) & 0xff]
+    ^ U2[(state->v32[1] >> 8) & 0xff] ^ U3[state->v32[0] & 0xff];
+#else
+  column0 = U0[state->v32[0] & 0xff] ^ U1[(state->v32[1] >> 8) & 0xff]
+	^ U2[(state->v32[2] >> 16) & 0xff] ^ U3[state->v32[3] >> 24];
+
+  column1 = U0[state->v32[1] & 0xff] ^ U1[(state->v32[2] >> 8) & 0xff]
+	^ U2[(state->v32[3] >> 16) & 0xff] ^ U3[state->v32[0] >> 24];
+
+  column2 = U0[state->v32[2] & 0xff] ^ U1[(state->v32[3] >> 8) & 0xff]
+	^ U2[(state->v32[0] >> 16) & 0xff] ^ U3[state->v32[1] >> 24];
+
+  column3 = U0[state->v32[3] & 0xff] ^ U1[(state->v32[0] >> 8) & 0xff]
+	^ U2[(state->v32[1] >> 16) & 0xff] ^ U3[state->v32[2] >> 24];
+#endif /* WORDS_BIGENDIAN */
+
+  state->v32[0] = column0 ^ round_key->v32[0];
+  state->v32[1] = column1 ^ round_key->v32[1];
+  state->v32[2] = column2 ^ round_key->v32[2];
+  state->v32[3] = column3 ^ round_key->v32[3];
+
+}
+
+static inline void
+aes_final_round(v128_t *state, const v128_t *round_key) {
+  uint32_t tmp0, tmp1, tmp2, tmp3;
+
+  tmp0 = (T4[(state->v32[0] >> 24)]        & 0xff000000) 
+       ^ (T4[(state->v32[1] >> 16) & 0xff] & 0x00ff0000) 
+       ^ (T4[(state->v32[2] >>  8) & 0xff] & 0x0000ff00) 
+       ^ (T4[(state->v32[3]      ) & 0xff] & 0x000000ff) 
+       ^ round_key->v32[0];
+
+  tmp1 = (T4[(state->v32[1] >> 24)]        & 0xff000000)
+       ^ (T4[(state->v32[2] >> 16) & 0xff] & 0x00ff0000)
+       ^ (T4[(state->v32[3] >>  8) & 0xff] & 0x0000ff00)
+       ^ (T4[(state->v32[0]      ) & 0xff] & 0x000000ff)
+       ^ round_key->v32[1];
+
+  tmp2 = (T4[(state->v32[2] >> 24)]        & 0xff000000)
+       ^ (T4[(state->v32[3] >> 16) & 0xff] & 0x00ff0000)
+       ^ (T4[(state->v32[0] >>  8) & 0xff] & 0x0000ff00)
+       ^ (T4[(state->v32[1]      ) & 0xff] & 0x000000ff)
+       ^ round_key->v32[2];
+
+  tmp3 = (T4[(state->v32[3] >> 24)]        & 0xff000000)
+       ^ (T4[(state->v32[0] >> 16) & 0xff] & 0x00ff0000)
+       ^ (T4[(state->v32[1] >>  8) & 0xff] & 0x0000ff00)
+       ^ (T4[(state->v32[2]      ) & 0xff] & 0x000000ff)
+       ^ round_key->v32[3];
+
+  state->v32[0] = tmp0;
+  state->v32[1] = tmp1;
+  state->v32[2] = tmp2;
+  state->v32[3] = tmp3;
+
+}
+
+static inline void
+aes_inv_final_round(v128_t *state, const v128_t *round_key) {
+  uint32_t tmp0, tmp1, tmp2, tmp3;
+
+  tmp0 = (U4[(state->v32[0] >> 24)]        & 0xff000000) 
+       ^ (U4[(state->v32[3] >> 16) & 0xff] & 0x00ff0000) 
+       ^ (U4[(state->v32[2] >>  8) & 0xff] & 0x0000ff00) 
+       ^ (U4[(state->v32[1]      ) & 0xff] & 0x000000ff) 
+       ^ round_key->v32[0];
+
+  tmp1 = (U4[(state->v32[1] >> 24)]        & 0xff000000)
+       ^ (U4[(state->v32[0] >> 16) & 0xff] & 0x00ff0000)
+       ^ (U4[(state->v32[3] >>  8) & 0xff] & 0x0000ff00)
+       ^ (U4[(state->v32[2]      ) & 0xff] & 0x000000ff)
+       ^ round_key->v32[1];
+
+  tmp2 = (U4[(state->v32[2] >> 24)]        & 0xff000000)
+       ^ (U4[(state->v32[1] >> 16) & 0xff] & 0x00ff0000)
+       ^ (U4[(state->v32[0] >>  8) & 0xff] & 0x0000ff00)
+       ^ (U4[(state->v32[3]      ) & 0xff] & 0x000000ff)
+       ^ round_key->v32[2];
+
+  tmp3 = (U4[(state->v32[3] >> 24)]        & 0xff000000)
+       ^ (U4[(state->v32[2] >> 16) & 0xff] & 0x00ff0000)
+       ^ (U4[(state->v32[1] >>  8) & 0xff] & 0x0000ff00)
+       ^ (U4[(state->v32[0]      ) & 0xff] & 0x000000ff)
+       ^ round_key->v32[3];
+
+  state->v32[0] = tmp0;
+  state->v32[1] = tmp1;
+  state->v32[2] = tmp2;
+  state->v32[3] = tmp3;
+
+}
+
+#elif CPU_16  /* assume 16-bit word size on processor */
+
+static inline void
+aes_round(v128_t *state, const v128_t *round_key) {
+  uint32_t column0, column1, column2, column3;
+  uint16_t c
+  /* compute the columns of the output square in terms of the octets
+     of state, using the tables T0, T1, T2, T3 */
+
+  column0 = T0[state->v8[0]] ^ T1[state->v8[5]]
+    ^ T2[state->v8[10]] ^ T3[state->v8[15]];
+
+  column1 = T0[state->v8[4]] ^ T1[state->v8[9]]
+    ^ T2[state->v8[14]] ^ T3[state->v8[3]];
+
+  column2 = T0[state->v8[8]] ^ T1[state->v8[13]]
+    ^ T2[state->v8[2]] ^ T3[state->v8[7]];
+
+  column3 = T0[state->v8[12]] ^ T1[state->v8[1]]
+    ^ T2[state->v8[6]] ^ T3[state->v8[11]];
+
+  state->v32[0] = column0 ^ round_key->v32[0];
+  state->v32[1] = column1 ^ round_key->v32[1];
+  state->v32[2] = column2 ^ round_key->v32[2];
+  state->v32[3] = column3 ^ round_key->v32[3];
+
+}
+
+
+static inline void
+aes_inv_round(v128_t *state, const v128_t *round_key) {
+  uint32_t column0, column1, column2, column3;
+
+  /* compute the columns of the output square in terms of the octets
+     of state, using the tables U0, U1, U2, U3 */
+
+  column0 = U0[state->v8[0]] ^ U1[state->v8[5]]
+    ^ U2[state->v8[10]] ^ U3[state->v8[15]];
+
+  column1 = U0[state->v8[4]] ^ U1[state->v8[9]]
+    ^ U2[state->v8[14]] ^ U3[state->v8[3]];
+
+  column2 = U0[state->v8[8]] ^ U1[state->v8[13]]
+    ^ U2[state->v8[2]] ^ U3[state->v8[7]];
+
+  column3 = U0[state->v8[12]] ^ U1[state->v8[1]]
+    ^ U2[state->v8[6]] ^ U3[state->v8[11]];
+
+  state->v32[0] = column0 ^ round_key->v32[0];
+  state->v32[1] = column1 ^ round_key->v32[1];
+  state->v32[2] = column2 ^ round_key->v32[2];
+  state->v32[3] = column3 ^ round_key->v32[3];
+
+}
+
+static inline void
+aes_final_round(v128_t *state, const v128_t *round_key) {
+  uint8_t tmp;
+
+  /* byte substitutions and row shifts */
+  /* first row - no shift */
+  state->v8[0] = aes_sbox[state->v8[0]];
+  state->v8[4] = aes_sbox[state->v8[4]];
+  state->v8[8] = aes_sbox[state->v8[8]];
+  state->v8[12] = aes_sbox[state->v8[12]];
+
+  /* second row - shift one left */
+  tmp = aes_sbox[state->v8[1]];
+  state->v8[1] = aes_sbox[state->v8[5]];
+  state->v8[5] = aes_sbox[state->v8[9]];
+  state->v8[9] = aes_sbox[state->v8[13]];
+  state->v8[13] = tmp;
+
+  /* third row - shift two left */
+  tmp = aes_sbox[state->v8[10]];
+  state->v8[10] = aes_sbox[state->v8[2]];
+  state->v8[2] = tmp;
+  tmp = aes_sbox[state->v8[14]];
+  state->v8[14] = aes_sbox[state->v8[6]];
+  state->v8[6] = tmp; 
+
+  /* fourth row - shift three left */
+  tmp = aes_sbox[state->v8[15]];
+  state->v8[15] = aes_sbox[state->v8[11]];
+  state->v8[11] = aes_sbox[state->v8[7]];
+  state->v8[7] = aes_sbox[state->v8[3]];
+  state->v8[3] = tmp;
+
+  v128_xor_eq(state, round_key);
+}
+
+static inline void
+aes_inv_final_round(v128_t *state, const v128_t *round_key) {
+  uint8_t tmp;
+
+  /* byte substitutions and row shifts */
+  /* first row - no shift */
+  state->v8[0] = aes_inv_sbox[state->v8[0]];
+  state->v8[4] = aes_inv_sbox[state->v8[4]];
+  state->v8[8] = aes_inv_sbox[state->v8[8]];
+  state->v8[12] = aes_inv_sbox[state->v8[12]];
+
+  /* second row - shift one left */
+  tmp = aes_inv_sbox[state->v8[1]];
+  state->v8[1] = aes_inv_sbox[state->v8[5]];
+  state->v8[5] = aes_inv_sbox[state->v8[9]];
+  state->v8[9] = aes_inv_sbox[state->v8[13]];
+  state->v8[13] = tmp;
+
+  /* third row - shift two left */
+  tmp = aes_inv_sbox[state->v8[10]];
+  state->v8[10] = aes_inv_sbox[state->v8[2]];
+  state->v8[2] = tmp;
+  tmp = aes_inv_sbox[state->v8[14]];
+  state->v8[14] = aes_inv_sbox[state->v8[6]];
+  state->v8[6] = tmp; 
+
+  /* fourth row - shift three left */
+  tmp = aes_inv_sbox[state->v8[15]];
+  state->v8[15] = aes_inv_sbox[state->v8[11]];
+  state->v8[11] = aes_inv_sbox[state->v8[7]];
+  state->v8[7] = aes_inv_sbox[state->v8[3]];
+  state->v8[3] = tmp;
+
+  v128_xor_eq(state, round_key);
+}
+
+#endif  /* CPU type */
+
+
+void
+aes_encrypt(v128_t *plaintext, const aes_expanded_key_t exp_key) {
+
+  /* add in the subkey */
+  v128_xor_eq(plaintext, exp_key + 0);
+
+  /* now do nine rounds */
+  aes_round(plaintext, exp_key + 1);
+  aes_round(plaintext, exp_key + 2);
+  aes_round(plaintext, exp_key + 3);
+  aes_round(plaintext, exp_key + 4);
+  aes_round(plaintext, exp_key + 5);
+  aes_round(plaintext, exp_key + 6);
+  aes_round(plaintext, exp_key + 7);
+  aes_round(plaintext, exp_key + 8);  
+  aes_round(plaintext, exp_key + 9);
+  /* the last round is different */
+
+ aes_final_round(plaintext, exp_key + 10);  
+}
+
+void
+aes_decrypt(v128_t *plaintext, const aes_expanded_key_t exp_key) {
+
+  /* add in the subkey */
+  v128_xor_eq(plaintext, exp_key + 0);
+
+  /* now do nine rounds */
+  aes_inv_round(plaintext, exp_key + 1);
+  aes_inv_round(plaintext, exp_key + 2);
+  aes_inv_round(plaintext, exp_key + 3);
+  aes_inv_round(plaintext, exp_key + 4);
+  aes_inv_round(plaintext, exp_key + 5);
+  aes_inv_round(plaintext, exp_key + 6);
+  aes_inv_round(plaintext, exp_key + 7);
+  aes_inv_round(plaintext, exp_key + 8);  
+  aes_inv_round(plaintext, exp_key + 9);
+  /* the last round is different */
+  aes_inv_final_round(plaintext, exp_key + 10);  
+}
diff --git a/crypto/cipher/aes_cbc.c b/crypto/cipher/aes_cbc.c
new file mode 100644
index 0000000..8fc6a32
--- /dev/null
+++ b/crypto/cipher/aes_cbc.c
@@ -0,0 +1,444 @@
+/*
+ * aes_cbc.c
+ *
+ * AES Cipher Block Chaining Mode
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "aes_cbc.h"
+#include "alloc.h"
+
+debug_module_t mod_aes_cbc = {
+  0,                 /* debugging is off by default */
+  "aes cbc"          /* printable module name       */
+};
+
+
+
+err_status_t
+aes_cbc_alloc(cipher_t **c, int key_len) {
+  extern cipher_type_t aes_cbc;
+  uint8_t *pointer;
+  int tmp;
+
+  debug_print(mod_aes_cbc, 
+	      "allocating cipher with key length %d", key_len);
+
+  if (key_len != 16)
+    return err_status_bad_param;
+  
+  /* allocate memory a cipher of type aes_icm */
+  tmp = (sizeof(aes_cbc_ctx_t) + sizeof(cipher_t));
+  pointer = (uint8_t*)crypto_alloc(tmp);
+  if (pointer == NULL) 
+    return err_status_alloc_fail;
+
+  /* set pointers */
+  *c = (cipher_t *)pointer;
+  (*c)->type = &aes_cbc;
+  (*c)->state = pointer + sizeof(cipher_t);
+
+  /* increment ref_count */
+  aes_cbc.ref_count++;
+
+  /* set key size        */
+  (*c)->key_len = key_len;
+
+  return err_status_ok;  
+}
+
+err_status_t
+aes_cbc_dealloc(cipher_t *c) {
+  extern cipher_type_t aes_cbc;
+
+  /* zeroize entire state*/
+  octet_string_set_to_zero((uint8_t *)c, 
+			   sizeof(aes_cbc_ctx_t) + sizeof(cipher_t));
+
+  /* free memory */
+  crypto_free(c);
+
+  /* decrement ref_count */
+  aes_cbc.ref_count--;
+  
+  return err_status_ok;  
+}
+
+err_status_t
+aes_cbc_context_init(aes_cbc_ctx_t *c, const uint8_t *key, 
+		     cipher_direction_t dir) {
+  v128_t tmp_key;
+
+  /* set tmp_key (for alignment) */
+  v128_copy_octet_string(&tmp_key, key);
+
+  debug_print(mod_aes_cbc, 
+	      "key:  %s", v128_hex_string(&tmp_key)); 
+
+  /* expand key for the appropriate direction */
+  switch (dir) {
+  case (direction_encrypt):
+    aes_expand_encryption_key(&tmp_key, c->expanded_key);
+    break;
+  case (direction_decrypt):
+    aes_expand_decryption_key(&tmp_key, c->expanded_key);
+    break;
+  default:
+    return err_status_bad_param;
+  }
+
+
+  return err_status_ok;
+}
+
+
+err_status_t
+aes_cbc_set_iv(aes_cbc_ctx_t *c, void *iv) {
+  int i;
+/*   v128_t *input = iv; */
+  uint8_t *input = (uint8_t*) iv;
+ 
+  /* set state and 'previous' block to iv */
+  for (i=0; i < 16; i++) 
+    c->previous.v8[i] = c->state.v8[i] = input[i];
+
+  debug_print(mod_aes_cbc, "setting iv: %s", v128_hex_string(&c->state)); 
+
+  return err_status_ok;
+}
+
+err_status_t
+aes_cbc_encrypt(aes_cbc_ctx_t *c,
+		unsigned char *data, 
+		unsigned int *bytes_in_data) {
+  int i;
+  unsigned char *input  = data;   /* pointer to data being read    */
+  unsigned char *output = data;   /* pointer to data being written */
+  int bytes_to_encr = *bytes_in_data;
+
+  /*
+   * verify that we're 16-octet aligned
+   */
+  if (*bytes_in_data & 0xf) 
+    return err_status_bad_param;
+
+  /*
+   * note that we assume that the initialization vector has already
+   * been set, e.g. by calling aes_cbc_set_iv()
+   */
+  debug_print(mod_aes_cbc, "iv: %s", 
+	      v128_hex_string(&c->state));
+  
+  /*
+   * loop over plaintext blocks, exoring state into plaintext then
+   * encrypting and writing to output
+   */
+  while (bytes_to_encr > 0) {
+    
+    /* exor plaintext into state */
+    for (i=0; i < 16; i++)
+      c->state.v8[i] ^= *input++;
+
+    debug_print(mod_aes_cbc, "inblock:  %s", 
+	      v128_hex_string(&c->state));
+
+    aes_encrypt(&c->state, c->expanded_key);
+
+    debug_print(mod_aes_cbc, "outblock: %s", 
+	      v128_hex_string(&c->state));
+
+    /* copy ciphertext to output */
+    for (i=0; i < 16; i++)
+      *output++ = c->state.v8[i];
+
+    bytes_to_encr -= 16;
+  }
+
+  return err_status_ok;
+}
+
+err_status_t
+aes_cbc_decrypt(aes_cbc_ctx_t *c,
+		unsigned char *data, 
+		unsigned int *bytes_in_data) {
+  int i;
+  v128_t state, previous;
+  unsigned char *input  = data;   /* pointer to data being read    */
+  unsigned char *output = data;   /* pointer to data being written */
+  int bytes_to_encr = *bytes_in_data;
+  uint8_t tmp;
+
+  /*
+   * verify that we're 16-octet aligned
+   */
+  if (*bytes_in_data & 0x0f)
+    return err_status_bad_param;    
+
+  /* set 'previous' block to iv*/
+  for (i=0; i < 16; i++) {
+    previous.v8[i] = c->previous.v8[i];
+  }
+
+  debug_print(mod_aes_cbc, "iv: %s", 
+	      v128_hex_string(&previous));
+  
+  /*
+   * loop over ciphertext blocks, decrypting then exoring with state
+   * then writing plaintext to output
+   */
+  while (bytes_to_encr > 0) {
+    
+    /* set state to ciphertext input block */
+    for (i=0; i < 16; i++) {
+     state.v8[i] = *input++;
+    }
+
+    debug_print(mod_aes_cbc, "inblock:  %s", 
+	      v128_hex_string(&state));
+    
+    /* decrypt state */
+    aes_decrypt(&state, c->expanded_key);
+
+    debug_print(mod_aes_cbc, "outblock: %s", 
+	      v128_hex_string(&state));
+
+    /* 
+     * exor previous ciphertext block out of plaintext, and write new
+     * plaintext block to output, while copying old ciphertext block
+     * to the 'previous' block
+     */
+    for (i=0; i < 16; i++) {
+      tmp = *output;
+      *output++ = state.v8[i] ^ previous.v8[i];
+      previous.v8[i] = tmp;
+    }
+
+    bytes_to_encr -= 16;
+  }
+
+  return err_status_ok;
+}
+
+
+err_status_t
+aes_cbc_nist_encrypt(aes_cbc_ctx_t *c,
+		     unsigned char *data, 
+		     unsigned int *bytes_in_data) {
+  int i;
+  unsigned char *pad_start; 
+  int num_pad_bytes;
+  err_status_t status;
+
+  /* 
+   * determine the number of padding bytes that we need to add - 
+   * this value is always between 1 and 16, inclusive.
+   */
+  num_pad_bytes = 16 - (*bytes_in_data & 0xf);
+  pad_start = data;
+  pad_start += *bytes_in_data;
+  *pad_start++ = 0xa0;
+  for (i=0; i < num_pad_bytes; i++) 
+    *pad_start++ = 0x00;
+   
+  /* 
+   * increment the data size 
+   */
+  *bytes_in_data += num_pad_bytes;  
+
+  /*
+   * now cbc encrypt the padded data 
+   */
+  status = aes_cbc_encrypt(c, data, bytes_in_data);
+  if (status) 
+    return status;
+
+  return err_status_ok;
+}
+
+
+err_status_t
+aes_cbc_nist_decrypt(aes_cbc_ctx_t *c,
+		     unsigned char *data, 
+		     unsigned int *bytes_in_data) {
+  unsigned char *pad_end;
+  int num_pad_bytes;
+  err_status_t status;
+
+  /*
+   * cbc decrypt the padded data 
+   */
+  status = aes_cbc_decrypt(c, data, bytes_in_data);
+  if (status) 
+    return status;
+
+  /*
+   * determine the number of padding bytes in the decrypted plaintext
+   * - this value is always between 1 and 16, inclusive.
+   */
+  num_pad_bytes = 1;
+  pad_end = data + (*bytes_in_data - 1);
+  while (*pad_end != 0xa0) {   /* note: should check padding correctness */
+    pad_end--;
+    num_pad_bytes++;
+  }
+  
+  /* decrement data size */
+  *bytes_in_data -= num_pad_bytes;  
+
+  return err_status_ok;
+}
+
+
+char 
+aes_cbc_description[] = "aes cipher block chaining (cbc) mode";
+
+/*
+ * Test case 0 is derived from FIPS 197 Appendix A; it uses an
+ * all-zero IV, so that the first block encryption matches the test
+ * case in that appendix.  This property provides a check of the base
+ * AES encryption and decryption algorithms; if CBC fails on some
+ * particular platform, then you should print out AES intermediate
+ * data and compare with the detailed info provided in that appendix.
+ *
+ */
+
+
+uint8_t aes_cbc_test_case_0_key[16] = {
+  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
+  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
+};
+
+uint8_t aes_cbc_test_case_0_plaintext[64] =  {
+  0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
+  0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff 
+};
+
+uint8_t aes_cbc_test_case_0_ciphertext[80] = {
+  0x69, 0xc4, 0xe0, 0xd8, 0x6a, 0x7b, 0x04, 0x30, 
+  0xd8, 0xcd, 0xb7, 0x80, 0x70, 0xb4, 0xc5, 0x5a,
+  0x03, 0x35, 0xed, 0x27, 0x67, 0xf2, 0x6d, 0xf1, 
+  0x64, 0x83, 0x2e, 0x23, 0x44, 0x38, 0x70, 0x8b
+
+};
+
+uint8_t aes_cbc_test_case_0_iv[16] = {
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+
+cipher_test_case_t aes_cbc_test_case_0 = {
+  16,                                    /* octets in key            */
+  aes_cbc_test_case_0_key,               /* key                      */
+  aes_cbc_test_case_0_iv,                /* initialization vector    */
+  16,                                    /* octets in plaintext      */
+  aes_cbc_test_case_0_plaintext,         /* plaintext                */
+  32,                                    /* octets in ciphertext     */
+  aes_cbc_test_case_0_ciphertext,        /* ciphertext               */
+  NULL                                   /* pointer to next testcase */
+};
+
+
+/*
+ * this test case is taken directly from Appendix F.2 of NIST Special
+ * Publication SP 800-38A
+ */
+
+uint8_t aes_cbc_test_case_1_key[16] = {
+  0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
+  0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c,
+};
+
+uint8_t aes_cbc_test_case_1_plaintext[64] =  {
+  0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 
+  0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
+  0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 
+  0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
+  0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11,
+  0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
+  0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 
+  0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10
+};
+
+uint8_t aes_cbc_test_case_1_ciphertext[80] = {
+  0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46,
+  0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d,
+  0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee,
+  0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2,
+  0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b,
+  0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16, 
+  0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09, 
+  0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7,
+  0x39, 0x34, 0x07, 0x03, 0x36, 0xd0, 0x77, 0x99, 
+  0xe0, 0xc4, 0x2f, 0xdd, 0xa8, 0xdf, 0x4c, 0xa3
+};
+
+uint8_t aes_cbc_test_case_1_iv[16] = {
+  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
+  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
+};
+
+cipher_test_case_t aes_cbc_test_case_1 = {
+  16,                                    /* octets in key            */
+  aes_cbc_test_case_1_key,               /* key                      */
+  aes_cbc_test_case_1_iv,                /* initialization vector    */
+  64,                                    /* octets in plaintext      */
+  aes_cbc_test_case_1_plaintext,         /* plaintext                */
+  80,                                    /* octets in ciphertext     */
+  aes_cbc_test_case_1_ciphertext,        /* ciphertext               */
+  &aes_cbc_test_case_0                    /* pointer to next testcase */
+};
+
+cipher_type_t aes_cbc = {
+  (cipher_alloc_func_t)          aes_cbc_alloc,
+  (cipher_dealloc_func_t)        aes_cbc_dealloc,  
+  (cipher_init_func_t)           aes_cbc_context_init,
+  (cipher_encrypt_func_t)        aes_cbc_nist_encrypt,
+  (cipher_decrypt_func_t)        aes_cbc_nist_decrypt,
+  (cipher_set_iv_func_t)         aes_cbc_set_iv,
+  (char *)                       aes_cbc_description,
+  (int)                          0,   /* instance count */
+  (cipher_test_case_t *)        &aes_cbc_test_case_0,
+  (debug_module_t *)            &mod_aes_cbc
+};
+
+
diff --git a/crypto/cipher/aes_icm.c b/crypto/cipher/aes_icm.c
new file mode 100644
index 0000000..5a38dee
--- /dev/null
+++ b/crypto/cipher/aes_icm.c
@@ -0,0 +1,512 @@
+/*
+ * aes_icm.c
+ *
+ * AES Integer Counter Mode
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#define ALIGN_32 0
+
+#include "aes_icm.h"
+#include "alloc.h"
+
+
+debug_module_t mod_aes_icm = {
+  0,                 /* debugging is off by default */
+  "aes icm"          /* printable module name       */
+};
+
+/*
+ * integer counter mode works as follows:
+ *
+ * 16 bits
+ * <----->
+ * +------+------+------+------+------+------+------+------+ 
+ * |           nonce           |    pakcet index    |  ctr |---+
+ * +------+------+------+------+------+------+------+------+   |
+ *                                                             |
+ * +------+------+------+------+------+------+------+------+   v
+ * |                      salt                      |000000|->(+)
+ * +------+------+------+------+------+------+------+------+   |
+ *                                                             |
+ *                                                        +---------+
+ *							  | encrypt |
+ *							  +---------+
+ *							       | 
+ * +------+------+------+------+------+------+------+------+   |
+ * |                    keystream block                    |<--+ 
+ * +------+------+------+------+------+------+------+------+   
+ *
+ * All fields are big-endian
+ *
+ * ctr is the block counter, which increments from zero for
+ * each packet (16 bits wide)
+ * 
+ * packet index is distinct for each packet (48 bits wide)
+ *
+ * nonce can be distinct across many uses of the same key, or
+ * can be a fixed value per key, or can be per-packet randomness
+ * (64 bits)
+ *
+ */
+
+err_status_t
+aes_icm_alloc_ismacryp(cipher_t **c, int key_len, int forIsmacryp) {
+  extern cipher_type_t aes_icm;
+  uint8_t *pointer;
+  int tmp;
+
+  debug_print(mod_aes_icm, 
+            "allocating cipher with key length %d", key_len);
+
+  /*
+   * Ismacryp, for example, uses 16 byte key + 8 byte 
+   * salt  so this function is called with key_len = 24.
+   * The check for key_len = 30 does not apply. Our usage
+   * of aes functions with key_len = values other than 30
+   * has not broken anything. Don't know what would be the
+   * effect of skipping this check for srtp in general.
+   */
+  if (!forIsmacryp && key_len != 30)
+    return err_status_bad_param;
+
+  /* allocate memory a cipher of type aes_icm */
+  tmp = (sizeof(aes_icm_ctx_t) + sizeof(cipher_t));
+  pointer = (uint8_t*)crypto_alloc(tmp);
+  if (pointer == NULL) 
+    return err_status_alloc_fail;
+
+  /* set pointers */
+  *c = (cipher_t *)pointer;
+  (*c)->type = &aes_icm;
+  (*c)->state = pointer + sizeof(cipher_t);
+
+  /* increment ref_count */
+  aes_icm.ref_count++;
+
+  /* set key size        */
+  (*c)->key_len = key_len;
+
+  return err_status_ok;  
+}
+
+err_status_t aes_icm_alloc(cipher_t **c, int key_len, int forIsmacryp) {
+  return aes_icm_alloc_ismacryp(c, key_len, 0);
+}
+
+err_status_t
+aes_icm_dealloc(cipher_t *c) {
+  extern cipher_type_t aes_icm;
+
+  /* zeroize entire state*/
+  octet_string_set_to_zero((uint8_t *)c, 
+			   sizeof(aes_icm_ctx_t) + sizeof(cipher_t));
+
+  /* free memory */
+  crypto_free(c);
+
+  /* decrement ref_count */
+  aes_icm.ref_count--;
+  
+  return err_status_ok;  
+}
+
+
+/*
+ * aes_icm_context_init(...) initializes the aes_icm_context
+ * using the value in key[].
+ *
+ * the key is the secret key 
+ *
+ * the salt is unpredictable (but not necessarily secret) data which
+ * randomizes the starting point in the keystream
+ */
+
+err_status_t
+aes_icm_context_init(aes_icm_ctx_t *c, const uint8_t *key) {
+  v128_t tmp_key;
+  int i;
+
+  /* set counter and initial values to 'offset' value */
+  /* FIX!!! this assumes the salt is at key + 16, and thus that the */
+  /* FIX!!! cipher key length is 16! */
+  for (i = 0; i < 14; i++) {
+    c->counter.v8[i] = key[16 + i];
+    c->offset.v8[i] = key[16 + i];
+  }
+
+  /* force last two octets of the offset to zero (for srtp compatibility) */
+  c->offset.v8[14] = c->offset.v8[15] = 0;
+  c->counter.v8[14] = c->counter.v8[15] = 0;
+
+  /* set tmp_key (for alignment) */
+  v128_copy_octet_string(&tmp_key, key);
+
+  debug_print(mod_aes_icm, 
+	      "key:  %s", v128_hex_string(&tmp_key)); 
+  debug_print(mod_aes_icm, 
+	      "offset: %s", v128_hex_string(&c->offset)); 
+
+  /* expand key */
+  aes_expand_encryption_key(&tmp_key, c->expanded_key);
+
+  /* indicate that the keystream_buffer is empty */
+  c->bytes_in_buffer = 0;
+
+  return err_status_ok;
+}
+
+/*
+ * aes_icm_set_octet(c, i) sets the counter of the context which it is
+ * passed so that the next octet of keystream that will be generated
+ * is the ith octet
+ */
+
+err_status_t
+aes_icm_set_octet(aes_icm_ctx_t *c,
+		  uint64_t octet_num) {
+
+#ifdef NO_64BIT_MATH
+  int tail_num       = low32(octet_num) & 0x0f;
+  /* 64-bit right-shift 4 */
+  uint64_t block_num = make64(high32(octet_num) >> 4,
+							  ((high32(octet_num) & 0x0f)<<(32-4)) |
+							   (low32(octet_num) >> 4));
+#else
+  int tail_num       = (int)(octet_num % 16);
+  uint64_t block_num = octet_num / 16;
+#endif
+  
+
+  /* set counter value */
+  /* FIX - There's no way this is correct */
+  c->counter.v64[0] = c->offset.v64[0];
+#ifdef NO_64BIT_MATH
+  c->counter.v64[0] = make64(high32(c->offset.v64[0]) ^ high32(block_num),
+							 low32(c->offset.v64[0])  ^ low32(block_num));
+#else
+  c->counter.v64[0] = c->offset.v64[0] ^ block_num;
+#endif
+
+  debug_print(mod_aes_icm, 
+	      "set_octet: %s", v128_hex_string(&c->counter)); 
+
+  /* fill keystream buffer, if needed */
+  if (tail_num) {
+    v128_copy(&c->keystream_buffer, &c->counter);
+    aes_encrypt(&c->keystream_buffer, c->expanded_key);
+    c->bytes_in_buffer = sizeof(v128_t);
+
+    debug_print(mod_aes_icm, "counter:    %s", 
+	      v128_hex_string(&c->counter));
+    debug_print(mod_aes_icm, "ciphertext: %s", 
+	      v128_hex_string(&c->keystream_buffer));    
+    
+    /*  indicate number of bytes in keystream_buffer  */
+    c->bytes_in_buffer = sizeof(v128_t) - tail_num;
+  
+  } else {
+    
+    /* indicate that keystream_buffer is empty */
+    c->bytes_in_buffer = 0;
+  }
+
+  return err_status_ok;
+}
+
+/*
+ * aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with
+ * the offset
+ */
+
+err_status_t
+aes_icm_set_iv(aes_icm_ctx_t *c, void *iv) {
+  v128_t *nonce = (v128_t *) iv;
+
+  debug_print(mod_aes_icm, 
+	      "setting iv: %s", v128_hex_string(nonce)); 
+ 
+  v128_xor(&c->counter, &c->offset, nonce);
+  
+  debug_print(mod_aes_icm, 
+	      "set_counter: %s", v128_hex_string(&c->counter)); 
+
+  /* indicate that the keystream_buffer is empty */
+  c->bytes_in_buffer = 0;
+
+  return err_status_ok;
+}
+
+
+
+/*
+ * aes_icm_advance(...) refills the keystream_buffer and
+ * advances the block index of the sicm_context forward by one
+ *
+ * this is an internal, hopefully inlined function
+ */
+  
+static inline void
+aes_icm_advance_ismacryp(aes_icm_ctx_t *c, uint8_t forIsmacryp) {
+  /* fill buffer with new keystream */
+  v128_copy(&c->keystream_buffer, &c->counter);
+  aes_encrypt(&c->keystream_buffer, c->expanded_key);
+  c->bytes_in_buffer = sizeof(v128_t);
+
+  debug_print(mod_aes_icm, "counter:    %s", 
+	      v128_hex_string(&c->counter));
+  debug_print(mod_aes_icm, "ciphertext: %s", 
+	      v128_hex_string(&c->keystream_buffer));    
+  
+  /* clock counter forward */
+
+  if (forIsmacryp) {
+    uint32_t temp;    
+    //alex's clock counter forward
+    temp = ntohl(c->counter.v32[3]);
+    c->counter.v32[3] = htonl(++temp);
+  } else {
+    if (!++(c->counter.v8[15])) 
+      ++(c->counter.v8[14]);
+  }
+}
+
+inline void aes_icm_advance(aes_icm_ctx_t *c) {
+  aes_icm_advance_ismacryp(c, 0);
+}
+
+
+/*e
+ * icm_encrypt deals with the following cases:
+ *
+ * bytes_to_encr < bytes_in_buffer
+ *  - add keystream into data
+ *
+ * bytes_to_encr > bytes_in_buffer
+ *  - add keystream into data until keystream_buffer is depleted
+ *  - loop over blocks, filling keystream_buffer and then
+ *    adding keystream into data
+ *  - fill buffer then add in remaining (< 16) bytes of keystream 
+ */
+
+err_status_t
+aes_icm_encrypt_ismacryp(aes_icm_ctx_t *c,
+              unsigned char *buf, unsigned int *enc_len, 
+              int forIsmacryp) {
+  unsigned int bytes_to_encr = *enc_len;
+  unsigned int i;
+  uint32_t *b;
+
+  /* check that there's enough segment left but not for ismacryp*/
+  if (!forIsmacryp && (bytes_to_encr + htons(c->counter.v16[7])) > 0xffff)
+    return err_status_terminus;
+
+ debug_print(mod_aes_icm, "block index: %d", 
+           htons(c->counter.v16[7]));
+  if (bytes_to_encr <= (unsigned int)c->bytes_in_buffer) {
+    
+    /* deal with odd case of small bytes_to_encr */
+    for (i = (sizeof(v128_t) - c->bytes_in_buffer);
+		 i < (sizeof(v128_t) - c->bytes_in_buffer + bytes_to_encr); i++) 
+	{
+      *buf++ ^= c->keystream_buffer.v8[i];
+	}
+
+    c->bytes_in_buffer -= bytes_to_encr;
+
+    /* return now to avoid the main loop */
+    return err_status_ok;
+
+  } else {
+    
+    /* encrypt bytes until the remaining data is 16-byte aligned */    
+    for (i=(sizeof(v128_t) - c->bytes_in_buffer); i < sizeof(v128_t); i++) 
+      *buf++ ^= c->keystream_buffer.v8[i];
+
+    bytes_to_encr -= c->bytes_in_buffer;
+    c->bytes_in_buffer = 0;
+
+  }
+  
+  /* now loop over entire 16-byte blocks of keystream */
+  for (i=0; i < (bytes_to_encr/sizeof(v128_t)); i++) {
+
+    /* fill buffer with new keystream */
+    aes_icm_advance_ismacryp(c, forIsmacryp);
+
+    /*
+     * add keystream into the data buffer (this would be a lot faster
+     * if we could assume 32-bit alignment!)
+     */
+
+#if ALIGN_32
+    b = (uint32_t *)buf;
+    *b++ ^= c->keystream_buffer.v32[0];
+    *b++ ^= c->keystream_buffer.v32[1];
+    *b++ ^= c->keystream_buffer.v32[2];
+    *b++ ^= c->keystream_buffer.v32[3];
+    buf = (uint8_t *)b;
+#else    
+    if ((((unsigned long) buf) & 0x03) != 0) {
+      *buf++ ^= c->keystream_buffer.v8[0];
+      *buf++ ^= c->keystream_buffer.v8[1];
+      *buf++ ^= c->keystream_buffer.v8[2];
+      *buf++ ^= c->keystream_buffer.v8[3];
+      *buf++ ^= c->keystream_buffer.v8[4];
+      *buf++ ^= c->keystream_buffer.v8[5];
+      *buf++ ^= c->keystream_buffer.v8[6];
+      *buf++ ^= c->keystream_buffer.v8[7];
+      *buf++ ^= c->keystream_buffer.v8[8];
+      *buf++ ^= c->keystream_buffer.v8[9];
+      *buf++ ^= c->keystream_buffer.v8[10];
+      *buf++ ^= c->keystream_buffer.v8[11];
+      *buf++ ^= c->keystream_buffer.v8[12];
+      *buf++ ^= c->keystream_buffer.v8[13];
+      *buf++ ^= c->keystream_buffer.v8[14];
+      *buf++ ^= c->keystream_buffer.v8[15];
+    } else {
+      b = (uint32_t *)buf;
+      *b++ ^= c->keystream_buffer.v32[0];
+      *b++ ^= c->keystream_buffer.v32[1];
+      *b++ ^= c->keystream_buffer.v32[2];
+      *b++ ^= c->keystream_buffer.v32[3];
+      buf = (uint8_t *)b;
+    }
+#endif /* #if ALIGN_32 */
+
+  }
+  
+  /* if there is a tail end of the data, process it */
+  if ((bytes_to_encr & 0xf) != 0) {
+    
+    /* fill buffer with new keystream */
+    aes_icm_advance_ismacryp(c, forIsmacryp);
+    
+    for (i=0; i < (bytes_to_encr & 0xf); i++)
+      *buf++ ^= c->keystream_buffer.v8[i];
+    
+    /* reset the keystream buffer size to right value */
+    c->bytes_in_buffer = sizeof(v128_t) - i;  
+  } else {
+
+    /* no tail, so just reset the keystream buffer size to zero */
+    c->bytes_in_buffer = 0;
+
+  }
+
+  return err_status_ok;
+}
+
+err_status_t
+aes_icm_encrypt(aes_icm_ctx_t *c, unsigned char *buf, unsigned int *enc_len) {
+  return aes_icm_encrypt_ismacryp(c, buf, enc_len, 0);
+}
+
+err_status_t
+aes_icm_output(aes_icm_ctx_t *c, uint8_t *buffer, int num_octets_to_output) {
+  unsigned int len = num_octets_to_output;
+  
+  /* zeroize the buffer */
+  octet_string_set_to_zero(buffer, num_octets_to_output);
+  
+  /* exor keystream into buffer */
+  return aes_icm_encrypt(c, buffer, &len);
+}
+
+
+char 
+aes_icm_description[] = "aes integer counter mode";
+
+uint8_t aes_icm_test_case_0_key[30] = {
+  0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
+  0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c,
+  0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+  0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
+};
+
+uint8_t aes_icm_test_case_0_nonce[16] = {
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+uint8_t aes_icm_test_case_0_plaintext[32] =  {
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+};
+
+uint8_t aes_icm_test_case_0_ciphertext[32] = {
+  0xe0, 0x3e, 0xad, 0x09, 0x35, 0xc9, 0x5e, 0x80,
+  0xe1, 0x66, 0xb1, 0x6d, 0xd9, 0x2b, 0x4e, 0xb4,
+  0xd2, 0x35, 0x13, 0x16, 0x2b, 0x02, 0xd0, 0xf7,
+  0x2a, 0x43, 0xa2, 0xfe, 0x4a, 0x5f, 0x97, 0xab
+};
+
+cipher_test_case_t aes_icm_test_case_0 = {
+  30,                                    /* octets in key            */
+  aes_icm_test_case_0_key,               /* key                      */
+  aes_icm_test_case_0_nonce,             /* packet index             */
+  32,                                    /* octets in plaintext      */
+  aes_icm_test_case_0_plaintext,         /* plaintext                */
+  32,                                    /* octets in ciphertext     */
+  aes_icm_test_case_0_ciphertext,        /* ciphertext               */
+  NULL                                   /* pointer to next testcase */
+};
+
+
+/*
+ * note: the encrypt function is identical to the decrypt function
+ */
+
+cipher_type_t aes_icm = {
+  (cipher_alloc_func_t)          aes_icm_alloc,
+  (cipher_dealloc_func_t)        aes_icm_dealloc,  
+  (cipher_init_func_t)           aes_icm_context_init,
+  (cipher_encrypt_func_t)        aes_icm_encrypt,
+  (cipher_decrypt_func_t)        aes_icm_encrypt,
+  (cipher_set_iv_func_t)         aes_icm_set_iv,
+  (char *)                       aes_icm_description,
+  (int)                          0,   /* instance count */
+  (cipher_test_case_t *)        &aes_icm_test_case_0,
+  (debug_module_t *)            &mod_aes_icm
+};
diff --git a/crypto/cipher/cipher.c b/crypto/cipher/cipher.c
new file mode 100644
index 0000000..573c5e2
--- /dev/null
+++ b/crypto/cipher/cipher.c
@@ -0,0 +1,407 @@
+/*
+ * cipher.c
+ *
+ * cipher meta-functions
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ * 
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "cipher.h"
+#include "rand_source.h"        /* used in invertibiltiy tests        */
+#include "alloc.h"              /* for crypto_alloc(), crypto_free()  */
+
+debug_module_t mod_cipher = {
+  0,                 /* debugging is off by default */
+  "cipher"           /* printable module name       */
+};
+
+err_status_t
+cipher_output(cipher_t *c, uint8_t *buffer, int num_octets_to_output) {
+  
+  /* zeroize the buffer */
+  octet_string_set_to_zero(buffer, num_octets_to_output);
+  
+  /* exor keystream into buffer */
+  return cipher_encrypt(c, buffer, (unsigned int *) &num_octets_to_output);
+}
+
+/* some bookkeeping functions */
+
+int
+cipher_get_key_length(const cipher_t *c) {
+  return c->key_len;
+}
+
+/* 
+ * cipher_type_self_test(ct) tests a cipher of type ct against test cases
+ * provided in an array of values of key, salt, xtd_seq_num_t,
+ * plaintext, and ciphertext that is known to be good
+ */
+
+#define SELF_TEST_BUF_OCTETS 128
+#define NUM_RAND_TESTS       128
+#define MAX_KEY_LEN          64
+
+err_status_t
+cipher_type_self_test(const cipher_type_t *ct) {
+  const cipher_test_case_t *test_case = ct->test_data;
+  cipher_t *c;
+  err_status_t status;
+  uint8_t buffer[SELF_TEST_BUF_OCTETS];
+  uint8_t buffer2[SELF_TEST_BUF_OCTETS];
+  unsigned int len;
+  int i, j, case_num = 0;
+
+  debug_print(mod_cipher, "running self-test for cipher %s", 
+	      ct->description);
+  
+  /*
+   * check to make sure that we have at least one test case, and
+   * return an error if we don't - we need to be paranoid here
+   */
+  if (test_case == NULL)
+    return err_status_cant_check;
+
+  /*
+   * loop over all test cases, perform known-answer tests of both the
+   * encryption and decryption functions
+   */  
+  while (test_case != NULL) {
+
+    /* allocate cipher */
+    status = cipher_type_alloc(ct, &c, test_case->key_length_octets);
+    if (status)
+      return status;
+    
+    /*
+     * test the encrypt function 
+     */
+    debug_print(mod_cipher, "testing encryption", NULL);    
+    
+    /* initialize cipher */
+    status = cipher_init(c, test_case->key, direction_encrypt);
+    if (status) {
+      cipher_dealloc(c);
+      return status;
+    }
+    
+    /* copy plaintext into test buffer */
+    if (test_case->ciphertext_length_octets > SELF_TEST_BUF_OCTETS) {
+      cipher_dealloc(c);    
+      return err_status_bad_param;
+    }
+    for (i=0; i < test_case->plaintext_length_octets; i++)
+      buffer[i] = test_case->plaintext[i];
+
+    debug_print(mod_cipher, "plaintext:    %s",
+	     octet_string_hex_string(buffer,
+				     test_case->plaintext_length_octets));
+
+    /* set the initialization vector */
+    status = cipher_set_iv(c, test_case->idx);
+    if (status) {
+      cipher_dealloc(c);
+      return status;
+    } 
+    
+    /* encrypt */
+    len = test_case->plaintext_length_octets;
+    status = cipher_encrypt(c, buffer, &len);
+    if (status) {
+      cipher_dealloc(c);
+      return status;
+    }
+    
+    debug_print(mod_cipher, "ciphertext:   %s",
+	     octet_string_hex_string(buffer,
+				     test_case->ciphertext_length_octets));
+
+    /* compare the resulting ciphertext with that in the test case */
+    if (len != test_case->ciphertext_length_octets)
+      return err_status_algo_fail;
+    status = err_status_ok;
+    for (i=0; i < test_case->ciphertext_length_octets; i++)
+      if (buffer[i] != test_case->ciphertext[i]) {
+	status = err_status_algo_fail;
+	debug_print(mod_cipher, "test case %d failed", case_num);
+	debug_print(mod_cipher, "(failure at byte %d)", i);
+	break;
+      }
+    if (status) {
+
+      debug_print(mod_cipher, "c computed: %s",
+	     octet_string_hex_string(buffer,
+		  2*test_case->plaintext_length_octets));
+      debug_print(mod_cipher, "c expected: %s",
+		  octet_string_hex_string(test_case->ciphertext,
+			  2*test_case->plaintext_length_octets));
+
+      cipher_dealloc(c);
+      return err_status_algo_fail;
+    }
+
+    /*
+     * test the decrypt function
+     */
+    debug_print(mod_cipher, "testing decryption", NULL);    
+
+    /* re-initialize cipher for decryption */
+    status = cipher_init(c, test_case->key, direction_decrypt);
+    if (status) {
+      cipher_dealloc(c);
+      return status;
+    }
+
+    /* copy ciphertext into test buffer */
+    if (test_case->ciphertext_length_octets > SELF_TEST_BUF_OCTETS) {
+      cipher_dealloc(c);    
+      return err_status_bad_param;
+    }
+    for (i=0; i < test_case->ciphertext_length_octets; i++)
+      buffer[i] = test_case->ciphertext[i];
+
+    debug_print(mod_cipher, "ciphertext:    %s",
+		octet_string_hex_string(buffer,
+					test_case->plaintext_length_octets));
+
+    /* set the initialization vector */
+    status = cipher_set_iv(c, test_case->idx);
+    if (status) {
+      cipher_dealloc(c);
+      return status;
+    } 
+    
+    /* decrypt */
+    len = test_case->ciphertext_length_octets;
+    status = cipher_decrypt(c, buffer, &len);
+    if (status) {
+      cipher_dealloc(c);
+      return status;
+    }
+    
+    debug_print(mod_cipher, "plaintext:   %s",
+	     octet_string_hex_string(buffer,
+				     test_case->plaintext_length_octets));
+
+    /* compare the resulting plaintext with that in the test case */
+    if (len != test_case->plaintext_length_octets)
+      return err_status_algo_fail;
+    status = err_status_ok;
+    for (i=0; i < test_case->plaintext_length_octets; i++)
+      if (buffer[i] != test_case->plaintext[i]) {
+	status = err_status_algo_fail;
+	debug_print(mod_cipher, "test case %d failed", case_num);
+	debug_print(mod_cipher, "(failure at byte %d)", i);
+      }
+    if (status) {
+
+      debug_print(mod_cipher, "p computed: %s",
+	     octet_string_hex_string(buffer,
+		  2*test_case->plaintext_length_octets));
+      debug_print(mod_cipher, "p expected: %s",
+		  octet_string_hex_string(test_case->plaintext,
+			  2*test_case->plaintext_length_octets));
+
+      cipher_dealloc(c);
+      return err_status_algo_fail;
+    }
+
+    /* deallocate the cipher */
+    status = cipher_dealloc(c);
+    if (status)
+      return status;
+    
+    /* 
+     * the cipher passed the test case, so move on to the next test
+     * case in the list; if NULL, we'l proceed to the next test
+     */   
+    test_case = test_case->next_test_case;
+    ++case_num;
+  }
+  
+  /* now run some random invertibility tests */
+
+  /* allocate cipher, using paramaters from the first test case */
+  test_case = ct->test_data;
+  status = cipher_type_alloc(ct, &c, test_case->key_length_octets);
+  if (status)
+      return status;
+  
+  rand_source_init();
+  
+  for (j=0; j < NUM_RAND_TESTS; j++) {
+    unsigned length;
+    int plaintext_len;
+    uint8_t key[MAX_KEY_LEN];
+    uint8_t  iv[MAX_KEY_LEN];
+
+    /* choose a length at random (leaving room for IV and padding) */
+    length = rand() % (SELF_TEST_BUF_OCTETS - 64);
+    debug_print(mod_cipher, "random plaintext length %d\n", length);
+    status = rand_source_get_octet_string(buffer, length);
+    if (status) return status;
+
+    debug_print(mod_cipher, "plaintext:    %s",
+		octet_string_hex_string(buffer, length));
+
+    /* copy plaintext into second buffer */
+    for (i=0; (unsigned int)i < length; i++)
+      buffer2[i] = buffer[i];
+    
+    /* choose a key at random */
+    if (test_case->key_length_octets > MAX_KEY_LEN)
+      return err_status_cant_check;
+    status = rand_source_get_octet_string(key, test_case->key_length_octets);
+    if (status) return status;
+
+   /* chose a random initialization vector */
+    status = rand_source_get_octet_string(iv, MAX_KEY_LEN);
+    if (status) return status;
+        
+    /* initialize cipher */
+    status = cipher_init(c, key, direction_encrypt);
+    if (status) {
+      cipher_dealloc(c);
+      return status;
+    }
+
+    /* set initialization vector */
+    status = cipher_set_iv(c, test_case->idx);
+    if (status) {
+      cipher_dealloc(c);
+      return status;
+    } 
+
+    /* encrypt buffer with cipher */
+    plaintext_len = length;
+    status = cipher_encrypt(c, buffer, &length);
+    if (status) {
+      cipher_dealloc(c);
+      return status;
+    }
+    debug_print(mod_cipher, "ciphertext:   %s",
+		octet_string_hex_string(buffer, length));
+
+    /* 
+     * re-initialize cipher for decryption, re-set the iv, then
+     * decrypt the ciphertext
+     */
+    status = cipher_init(c, key, direction_decrypt);
+    if (status) {
+      cipher_dealloc(c);
+      return status;
+    }
+    status = cipher_set_iv(c, test_case->idx);
+    if (status) {
+      cipher_dealloc(c);
+      return status;
+    } 
+    status = cipher_decrypt(c, buffer, &length);
+    if (status) {
+      cipher_dealloc(c);
+      return status;
+    }    
+
+    debug_print(mod_cipher, "plaintext[2]: %s",
+		octet_string_hex_string(buffer, length));    
+
+    /* compare the resulting plaintext with the original one */
+    if (length != plaintext_len)
+      return err_status_algo_fail;
+    status = err_status_ok;
+    for (i=0; i < plaintext_len; i++)
+      if (buffer[i] != buffer2[i]) {
+	status = err_status_algo_fail;
+	debug_print(mod_cipher, "random test case %d failed", case_num);
+	debug_print(mod_cipher, "(failure at byte %d)", i);
+      }
+    if (status) {
+      cipher_dealloc(c);
+      return err_status_algo_fail;
+    }
+        
+  }
+
+  return err_status_ok;
+}
+
+
+/*
+ * cipher_bits_per_second(c, l, t) computes (an estimate of) the
+ * number of bits that a cipher implementation can encrypt in a second
+ * 
+ * c is a cipher (which MUST be allocated and initialized already), l
+ * is the length in octets of the test data to be encrypted, and t is
+ * the number of trials
+ *
+ * if an error is encountered, the value 0 is returned
+ */
+
+uint64_t
+cipher_bits_per_second(cipher_t *c, int octets_in_buffer, int num_trials) {
+  int i;
+  v128_t nonce;
+  clock_t timer;
+  unsigned char *enc_buf;
+  unsigned int len = octets_in_buffer;
+
+  enc_buf = (unsigned char*) crypto_alloc(octets_in_buffer);
+  if (enc_buf == NULL)
+    return 0;  /* indicate bad parameters by returning null */
+  
+  /* time repeated trials */
+  v128_set_to_zero(&nonce);
+  timer = clock();
+  for(i=0; i < num_trials; i++, nonce.v32[3] = i) {
+    cipher_set_iv(c, &nonce);
+    cipher_encrypt(c, enc_buf, &len);
+  }
+  timer = clock() - timer;
+
+  crypto_free(enc_buf);
+
+  if (timer == 0) {
+    /* Too fast! */
+    return 0;
+  }
+  
+  return (uint64_t)CLOCKS_PER_SEC * num_trials * 8 * octets_in_buffer / timer;
+}
diff --git a/crypto/cipher/null_cipher.c b/crypto/cipher/null_cipher.c
new file mode 100644
index 0000000..721f50c
--- /dev/null
+++ b/crypto/cipher/null_cipher.c
@@ -0,0 +1,152 @@
+/*
+ * null_cipher.c
+ *
+ * A null cipher implementation.  This cipher leaves the plaintext
+ * unchanged.
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "datatypes.h"
+#include "null_cipher.h"
+#include "alloc.h"
+
+/* the null_cipher uses the cipher debug module  */
+
+extern debug_module_t mod_cipher;
+
+err_status_t
+null_cipher_alloc(cipher_t **c, int key_len) {
+  extern cipher_type_t null_cipher;
+  uint8_t *pointer;
+  
+  debug_print(mod_cipher, 
+	      "allocating cipher with key length %d", key_len);
+
+  /* allocate memory a cipher of type null_cipher */
+  pointer = (uint8_t*)crypto_alloc(sizeof(null_cipher_ctx_t) + sizeof(cipher_t));
+  if (pointer == NULL)
+    return err_status_alloc_fail;
+
+  /* set pointers */
+  *c = (cipher_t *)pointer;
+  (*c)->type = &null_cipher;
+  (*c)->state = pointer + sizeof(cipher_t);
+
+  /* set key size */
+  (*c)->key_len = key_len;
+
+  /* increment ref_count */
+  null_cipher.ref_count++;
+  
+  return err_status_ok;
+  
+}
+
+err_status_t
+null_cipher_dealloc(cipher_t *c) {
+  extern cipher_type_t null_cipher;
+
+  /* zeroize entire state*/
+  octet_string_set_to_zero((uint8_t *)c, 
+			   sizeof(null_cipher_ctx_t) + sizeof(cipher_t));
+
+  /* free memory of type null_cipher */
+  crypto_free(c);
+
+  /* decrement reference count */
+  null_cipher.ref_count--;
+  
+  return err_status_ok;
+  
+}
+
+err_status_t
+null_cipher_init(null_cipher_ctx_t *ctx, const uint8_t *key) {
+
+  debug_print(mod_cipher, "initializing null cipher", NULL);
+
+  return err_status_ok;
+}
+
+err_status_t
+null_cipher_set_iv(null_cipher_ctx_t *c, void *iv) { 
+  return err_status_ok;
+}
+
+err_status_t
+null_cipher_encrypt(null_cipher_ctx_t *c,
+		    unsigned char *buf, unsigned int *bytes_to_encr) {
+  return err_status_ok;
+}
+
+char 
+null_cipher_description[] = "null cipher";
+
+cipher_test_case_t  
+null_cipher_test_0 = {
+  0,                 /* octets in key            */
+  NULL,              /* key                      */
+  0,                 /* packet index             */
+  0,                 /* octets in plaintext      */
+  NULL,              /* plaintext                */
+  0,                 /* octets in plaintext      */
+  NULL,              /* ciphertext               */
+  NULL               /* pointer to next testcase */
+};
+
+
+/*
+ * note: the decrypt function is idential to the encrypt function
+ */
+
+cipher_type_t null_cipher = {
+  (cipher_alloc_func_t)         null_cipher_alloc,
+  (cipher_dealloc_func_t)       null_cipher_dealloc,
+  (cipher_init_func_t)          null_cipher_init,
+  (cipher_encrypt_func_t)       null_cipher_encrypt,
+  (cipher_decrypt_func_t)       null_cipher_encrypt,
+  (cipher_set_iv_func_t)        null_cipher_set_iv,
+  (char *)                      null_cipher_description,
+  (int)                         0,
+  (cipher_test_case_t *)       &null_cipher_test_0,
+  (debug_module_t *)            NULL
+};
+
diff --git a/crypto/hash/auth.c b/crypto/hash/auth.c
new file mode 100644
index 0000000..8eb722d
--- /dev/null
+++ b/crypto/hash/auth.c
@@ -0,0 +1,173 @@
+/*
+ * auth.c
+ *
+ * some bookkeeping functions for authentication functions
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "auth.h"
+
+/* the debug module for authentiation */
+
+debug_module_t mod_auth = {
+  0,                  /* debugging is off by default */
+  "auth func"         /* printable name for module   */
+};
+
+
+int
+auth_get_key_length(const auth_t *a) {
+  return a->key_len;
+}
+
+int
+auth_get_tag_length(const auth_t *a) {
+  return a->out_len;
+}
+
+int
+auth_get_prefix_length(const auth_t *a) {
+  return a->prefix_len;
+}
+
+int
+auth_type_get_ref_count(const auth_type_t *at) {
+  return at->ref_count;
+}
+
+/*
+ * auth_type_self_test() tests an auth function of type ct against
+ * test cases provided in an array of values of key, data, and tag
+ * that is known to be good
+ */
+
+/* should be big enough for most occasions */
+#define SELF_TEST_TAG_BUF_OCTETS 32
+
+err_status_t
+auth_type_self_test(const auth_type_t *at) {
+  auth_test_case_t *test_case = at->test_data;
+  auth_t *a;
+  err_status_t status;
+  uint8_t tag[SELF_TEST_TAG_BUF_OCTETS];
+  int i, case_num = 0;
+
+  debug_print(mod_auth, "running self-test for auth function %s", 
+	      at->description);
+  
+  /*
+   * check to make sure that we have at least one test case, and
+   * return an error if we don't - we need to be paranoid here
+   */
+  if (test_case == NULL)
+    return err_status_cant_check;
+
+  /* loop over all test cases */  
+  while (test_case != NULL) {
+
+    /* check test case parameters */
+    if (test_case->tag_length_octets > SELF_TEST_TAG_BUF_OCTETS)
+      return err_status_bad_param;
+    
+    /* allocate auth */
+    status = auth_type_alloc(at, &a, test_case->key_length_octets,
+			     test_case->tag_length_octets);
+    if (status)
+      return status;
+    
+    /* initialize auth */
+    status = auth_init(a, test_case->key);
+    if (status) {
+      auth_dealloc(a);
+      return status;
+    }
+
+    /* zeroize tag then compute */
+    octet_string_set_to_zero(tag, test_case->tag_length_octets);
+    status = auth_compute(a, test_case->data,
+			  test_case->data_length_octets, tag);
+    if (status) {
+      auth_dealloc(a);
+      return status;
+    }
+    
+    debug_print(mod_auth, "key: %s",
+		octet_string_hex_string(test_case->key,
+					test_case->key_length_octets));
+    debug_print(mod_auth, "data: %s",
+		octet_string_hex_string(test_case->data,
+				   test_case->data_length_octets));
+    debug_print(mod_auth, "tag computed: %s",
+	   octet_string_hex_string(tag, test_case->tag_length_octets));
+    debug_print(mod_auth, "tag expected: %s",
+	   octet_string_hex_string(test_case->tag,
+				   test_case->tag_length_octets));
+
+    /* check the result */
+    status = err_status_ok;
+    for (i=0; i < test_case->tag_length_octets; i++)
+      if (tag[i] != test_case->tag[i]) {
+	status = err_status_algo_fail;
+	debug_print(mod_auth, "test case %d failed", case_num);
+	debug_print(mod_auth, "  (mismatch at octet %d)", i);
+      }
+    if (status) {
+      auth_dealloc(a);
+      return err_status_algo_fail;
+    }
+    
+    /* deallocate the auth function */
+    status = auth_dealloc(a);
+    if (status)
+      return status;
+    
+    /* 
+     * the auth function passed the test case, so move on to the next test
+     * case in the list; if NULL, we'll quit and return an OK
+     */   
+    test_case = test_case->next_test_case;
+    ++case_num;
+  }
+  
+  return err_status_ok;
+}
+
+
diff --git a/crypto/hash/hmac.c b/crypto/hash/hmac.c
new file mode 100644
index 0000000..4336cf0
--- /dev/null
+++ b/crypto/hash/hmac.c
@@ -0,0 +1,267 @@
+/*
+ * hmac.c
+ *
+ * implementation of hmac auth_type_t
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright(c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "hmac.h" 
+#include "alloc.h"
+
+/* the debug module for authentiation */
+
+debug_module_t mod_hmac = {
+  0,                  /* debugging is off by default */
+  "hmac sha-1"        /* printable name for module   */
+};
+
+
+err_status_t
+hmac_alloc(auth_t **a, int key_len, int out_len) {
+  extern auth_type_t hmac;
+  uint8_t *pointer;
+
+  debug_print(mod_hmac, "allocating auth func with key length %d", key_len);
+  debug_print(mod_hmac, "                          tag length %d", out_len);
+
+  /*
+   * check key length - note that we don't support keys larger
+   * than 20 bytes yet
+   */
+  if (key_len > 20)
+    return err_status_bad_param;
+
+  /* check output length - should be less than 20 bytes */
+  if (out_len > 20)
+    return err_status_bad_param;
+
+  /* allocate memory for auth and hmac_ctx_t structures */
+  pointer = (uint8_t*)crypto_alloc(sizeof(hmac_ctx_t) + sizeof(auth_t));
+  if (pointer == NULL)
+    return err_status_alloc_fail;
+
+  /* set pointers */
+  *a = (auth_t *)pointer;
+  (*a)->type = &hmac;
+  (*a)->state = pointer + sizeof(auth_t);  
+  (*a)->out_len = out_len;
+  (*a)->key_len = key_len;
+  (*a)->prefix_len = 0;
+
+  /* increment global count of all hmac uses */
+  hmac.ref_count++;
+
+  return err_status_ok;
+}
+
+err_status_t
+hmac_dealloc(auth_t *a) {
+  extern auth_type_t hmac;
+  
+  /* zeroize entire state*/
+  octet_string_set_to_zero((uint8_t *)a, 
+			   sizeof(hmac_ctx_t) + sizeof(auth_t));
+
+  /* free memory */
+  crypto_free(a);
+  
+  /* decrement global count of all hmac uses */
+  hmac.ref_count--;
+
+  return err_status_ok;
+}
+
+err_status_t
+hmac_init(hmac_ctx_t *state, const uint8_t *key, int key_len) {
+  int i;
+  uint8_t ipad[64]; 
+  
+    /*
+   * check key length - note that we don't support keys larger
+   * than 20 bytes yet
+   */
+  if (key_len > 20)              
+    return err_status_bad_param;
+  
+  /*
+   * set values of ipad and opad by exoring the key into the
+   * appropriate constant values
+   */
+  for (i=0; i < key_len; i++) {    
+    ipad[i] = key[i] ^ 0x36;
+    state->opad[i] = key[i] ^ 0x5c;
+  }  
+  /* set the rest of ipad, opad to constant values */
+  for (   ; i < 64; i++) {    
+    ipad[i] = 0x36;
+    ((uint8_t *)state->opad)[i] = 0x5c;
+  }  
+
+  debug_print(mod_hmac, "ipad: %s", octet_string_hex_string(ipad, 64));
+  
+  /* initialize sha1 context */
+  sha1_init(&state->init_ctx);
+
+  /* hash ipad ^ key */
+  sha1_update(&state->init_ctx, ipad, 64);
+  memcpy(&state->ctx, &state->init_ctx, sizeof(sha1_ctx_t)); 
+
+  return err_status_ok;
+}
+
+err_status_t
+hmac_start(hmac_ctx_t *state) {
+    
+  memcpy(&state->ctx, &state->init_ctx, sizeof(sha1_ctx_t));
+
+  return err_status_ok;
+}
+
+err_status_t
+hmac_update(hmac_ctx_t *state, const uint8_t *message, int msg_octets) {
+
+  debug_print(mod_hmac, "input: %s", 
+	      octet_string_hex_string(message, msg_octets));
+  
+  /* hash message into sha1 context */
+  sha1_update(&state->ctx, message, msg_octets);
+
+  return err_status_ok;
+}
+
+err_status_t
+hmac_compute(hmac_ctx_t *state, const void *message,
+	     int msg_octets, int tag_len, uint8_t *result) {
+  uint32_t hash_value[5];
+  uint32_t H[5];
+  int i;
+
+  /* check tag length, return error if we can't provide the value expected */
+  if (tag_len > 20)
+    return err_status_bad_param;
+  
+  /* hash message, copy output into H */
+  hmac_update(state, (const uint8_t*)message, msg_octets);
+  sha1_final(&state->ctx, H);
+
+  /*
+   * note that we don't need to debug_print() the input, since the
+   * function hmac_update() already did that for us
+   */
+  debug_print(mod_hmac, "intermediate state: %s", 
+	      octet_string_hex_string((uint8_t *)H, 20));
+
+  /* re-initialize hash context */
+  sha1_init(&state->ctx);
+  
+  /* hash opad ^ key  */
+  sha1_update(&state->ctx, (uint8_t *)state->opad, 64);
+
+  /* hash the result of the inner hash */
+  sha1_update(&state->ctx, (uint8_t *)H, 20);
+  
+  /* the result is returned in the array hash_value[] */
+  sha1_final(&state->ctx, hash_value);
+
+  /* copy hash_value to *result */
+  for (i=0; i < tag_len; i++)    
+    result[i] = ((uint8_t *)hash_value)[i];
+
+  debug_print(mod_hmac, "output: %s", 
+	      octet_string_hex_string((uint8_t *)hash_value, tag_len));
+
+  return err_status_ok;
+}
+
+
+/* begin test case 0 */
+
+uint8_t
+hmac_test_case_0_key[20] = {
+  0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 
+  0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 
+  0x0b, 0x0b, 0x0b, 0x0b
+};
+
+uint8_t 
+hmac_test_case_0_data[8] = {
+  0x48, 0x69, 0x20, 0x54, 0x68, 0x65, 0x72, 0x65   /* "Hi There" */
+};
+
+uint8_t
+hmac_test_case_0_tag[20] = {
+  0xb6, 0x17, 0x31, 0x86, 0x55, 0x05, 0x72, 0x64, 
+  0xe2, 0x8b, 0xc0, 0xb6, 0xfb, 0x37, 0x8c, 0x8e, 
+  0xf1, 0x46, 0xbe, 0x00
+};
+
+auth_test_case_t
+hmac_test_case_0 = {
+  20,                        /* octets in key            */
+  hmac_test_case_0_key,      /* key                      */
+  8,                         /* octets in data           */ 
+  hmac_test_case_0_data,     /* data                     */
+  20,                        /* octets in tag            */
+  hmac_test_case_0_tag,      /* tag                      */
+  NULL                       /* pointer to next testcase */
+};
+
+/* end test case 0 */
+
+char hmac_description[] = "hmac sha-1 authentication function";
+
+/*
+ * auth_type_t hmac is the hmac metaobject
+ */
+
+auth_type_t
+hmac  = {
+  (auth_alloc_func)      hmac_alloc,
+  (auth_dealloc_func)    hmac_dealloc,
+  (auth_init_func)       hmac_init,
+  (auth_compute_func)    hmac_compute,
+  (auth_update_func)     hmac_update,
+  (auth_start_func)      hmac_start,
+  (char *)               hmac_description,
+  (int)                  0,  /* instance count */
+  (auth_test_case_t *)  &hmac_test_case_0,
+  (debug_module_t *)    &mod_hmac
+};
+
diff --git a/crypto/hash/null_auth.c b/crypto/hash/null_auth.c
new file mode 100644
index 0000000..d73f3f8
--- /dev/null
+++ b/crypto/hash/null_auth.c
@@ -0,0 +1,159 @@
+/*
+ * null_auth.c
+ *
+ * implements the do-nothing auth algorithm
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ *
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "null_auth.h" 
+#include "alloc.h"
+
+/* null_auth uses the auth debug module */
+
+extern debug_module_t mod_auth;
+
+err_status_t
+null_auth_alloc(auth_t **a, int key_len, int out_len) {
+  extern auth_type_t null_auth;
+  uint8_t *pointer;
+
+  debug_print(mod_auth, "allocating auth func with key length %d", key_len);
+  debug_print(mod_auth, "                          tag length %d", out_len);
+
+  /* allocate memory for auth and null_auth_ctx_t structures */
+  pointer = (uint8_t*)crypto_alloc(sizeof(null_auth_ctx_t) + sizeof(auth_t));
+  if (pointer == NULL)
+    return err_status_alloc_fail;
+
+  /* set pointers */
+  *a = (auth_t *)pointer;
+  (*a)->type = &null_auth;
+  (*a)->state = pointer + sizeof (auth_t);  
+  (*a)->out_len = out_len;
+  (*a)->prefix_len = out_len;
+  (*a)->key_len = key_len;
+
+  /* increment global count of all null_auth uses */
+  null_auth.ref_count++;
+
+  return err_status_ok;
+}
+
+err_status_t
+null_auth_dealloc(auth_t *a) {
+  extern auth_type_t null_auth;
+  
+  /* zeroize entire state*/
+  octet_string_set_to_zero((uint8_t *)a, 
+			   sizeof(null_auth_ctx_t) + sizeof(auth_t));
+
+  /* free memory */
+  crypto_free(a);
+  
+  /* decrement global count of all null_auth uses */
+  null_auth.ref_count--;
+
+  return err_status_ok;
+}
+
+err_status_t
+null_auth_init(null_auth_ctx_t *state, const uint8_t *key, int key_len) {
+
+  /* accept any length of key, and do nothing */
+  
+  return err_status_ok;
+}
+
+err_status_t
+null_auth_compute(null_auth_ctx_t *state, uint8_t *message,
+		   int msg_octets, int tag_len, uint8_t *result) {
+
+  return err_status_ok;
+}
+
+err_status_t
+null_auth_update(null_auth_ctx_t *state, uint8_t *message,
+		   int msg_octets) {
+
+  return err_status_ok;
+}
+
+err_status_t
+null_auth_start(null_auth_ctx_t *state) {
+  return err_status_ok;
+}
+
+/*
+ * auth_type_t - defines description, test case, and null_auth
+ * metaobject
+ */
+
+/* begin test case 0 */
+
+auth_test_case_t
+null_auth_test_case_0 = {
+  0,                                       /* octets in key            */
+  NULL,                                    /* key                      */
+  0,                                       /* octets in data           */ 
+  NULL,                                    /* data                     */
+  0,                                       /* octets in tag            */
+  NULL,                                    /* tag                      */
+  NULL                                     /* pointer to next testcase */
+};
+
+/* end test case 0 */
+
+char null_auth_description[] = "null authentication function";
+
+auth_type_t
+null_auth  = {
+  (auth_alloc_func)      null_auth_alloc,
+  (auth_dealloc_func)    null_auth_dealloc,
+  (auth_init_func)       null_auth_init,
+  (auth_compute_func)    null_auth_compute,
+  (auth_update_func)     null_auth_update,
+  (auth_start_func)      null_auth_start,
+  (char *)               null_auth_description,
+  (int)                  0,  /* instance count */
+  (auth_test_case_t *)   &null_auth_test_case_0
+};
diff --git a/crypto/hash/sha1.c b/crypto/hash/sha1.c
new file mode 100644
index 0000000..b9a8d10
--- /dev/null
+++ b/crypto/hash/sha1.c
@@ -0,0 +1,405 @@
+/*
+ * sha1.c
+ *
+ * an implementation of the Secure Hash Algorithm v.1 (SHA-1),
+ * specified in FIPS 180-1
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "sha1.h"
+
+debug_module_t mod_sha1 = {
+  0,                 /* debugging is off by default */
+  "sha-1"            /* printable module name       */
+};
+
+/* SN == Rotate left N bits */
+#define S1(X)  ((X << 1)  | (X >> 31))
+#define S5(X)  ((X << 5)  | (X >> 27))
+#define S30(X) ((X << 30) | (X >> 2))
+
+#define f0(B,C,D) ((B & C) | (~B & D))              
+#define f1(B,C,D) (B ^ C ^ D)
+#define f2(B,C,D) ((B & C) | (B & D) | (C & D))
+#define f3(B,C,D) (B ^ C ^ D)
+
+/* 
+ * nota bene: the variable K0 appears in the curses library, so we 
+ * give longer names to these variables to avoid spurious warnings 
+ * on systems that uses curses
+ */
+
+uint32_t SHA_K0 = 0x5A827999;   /* Kt for 0  <= t <= 19 */
+uint32_t SHA_K1 = 0x6ED9EBA1;   /* Kt for 20 <= t <= 39 */
+uint32_t SHA_K2 = 0x8F1BBCDC;   /* Kt for 40 <= t <= 59 */
+uint32_t SHA_K3 = 0xCA62C1D6;   /* Kt for 60 <= t <= 79 */
+
+void
+sha1(const uint8_t *msg,  int octets_in_msg, uint32_t hash_value[5]) {
+  sha1_ctx_t ctx;
+
+  sha1_init(&ctx);
+  sha1_update(&ctx, msg, octets_in_msg);
+  sha1_final(&ctx, hash_value);
+
+}
+
+/*
+ *  sha1_core(M, H) computes the core compression function, where M is
+ *  the next part of the message (in network byte order) and H is the
+ *  intermediate state { H0, H1, ...} (in host byte order)
+ *
+ *  this function does not do any of the padding required in the
+ *  complete SHA1 function
+ *
+ *  this function is used in the SEAL 3.0 key setup routines
+ *  (crypto/cipher/seal.c)
+ */
+
+void
+sha1_core(const uint32_t M[16], uint32_t hash_value[5]) {
+  uint32_t H0;
+  uint32_t H1;
+  uint32_t H2;
+  uint32_t H3;
+  uint32_t H4;
+  uint32_t W[80];
+  uint32_t A, B, C, D, E, TEMP;
+  int t;
+
+  /* copy hash_value into H0, H1, H2, H3, H4 */
+  H0 = hash_value[0];
+  H1 = hash_value[1];
+  H2 = hash_value[2];
+  H3 = hash_value[3];
+  H4 = hash_value[4];
+
+  /* copy/xor message into array */
+
+  W[0]  = be32_to_cpu(M[0]);
+  W[1]  = be32_to_cpu(M[1]);
+  W[2]  = be32_to_cpu(M[2]);
+  W[3]  = be32_to_cpu(M[3]);
+  W[4]  = be32_to_cpu(M[4]);
+  W[5]  = be32_to_cpu(M[5]);
+  W[6]  = be32_to_cpu(M[6]);
+  W[7]  = be32_to_cpu(M[7]);
+  W[8]  = be32_to_cpu(M[8]);
+  W[9]  = be32_to_cpu(M[9]);
+  W[10] = be32_to_cpu(M[10]);
+  W[11] = be32_to_cpu(M[11]);
+  W[12] = be32_to_cpu(M[12]);
+  W[13] = be32_to_cpu(M[13]);
+  W[14] = be32_to_cpu(M[14]);
+  W[15] = be32_to_cpu(M[15]);
+  TEMP = W[13] ^ W[8]  ^ W[2]  ^ W[0];  W[16] = S1(TEMP);
+  TEMP = W[14] ^ W[9]  ^ W[3]  ^ W[1];  W[17] = S1(TEMP);
+  TEMP = W[15] ^ W[10] ^ W[4]  ^ W[2];  W[18] = S1(TEMP);
+  TEMP = W[16] ^ W[11] ^ W[5]  ^ W[3];  W[19] = S1(TEMP);
+  TEMP = W[17] ^ W[12] ^ W[6]  ^ W[4];  W[20] = S1(TEMP);
+  TEMP = W[18] ^ W[13] ^ W[7]  ^ W[5];  W[21] = S1(TEMP);
+  TEMP = W[19] ^ W[14] ^ W[8]  ^ W[6];  W[22] = S1(TEMP);
+  TEMP = W[20] ^ W[15] ^ W[9]  ^ W[7];  W[23] = S1(TEMP);
+  TEMP = W[21] ^ W[16] ^ W[10] ^ W[8];  W[24] = S1(TEMP);
+  TEMP = W[22] ^ W[17] ^ W[11] ^ W[9];  W[25] = S1(TEMP);
+  TEMP = W[23] ^ W[18] ^ W[12] ^ W[10]; W[26] = S1(TEMP);
+  TEMP = W[24] ^ W[19] ^ W[13] ^ W[11]; W[27] = S1(TEMP);
+  TEMP = W[25] ^ W[20] ^ W[14] ^ W[12]; W[28] = S1(TEMP);
+  TEMP = W[26] ^ W[21] ^ W[15] ^ W[13]; W[29] = S1(TEMP);
+  TEMP = W[27] ^ W[22] ^ W[16] ^ W[14]; W[30] = S1(TEMP);
+  TEMP = W[28] ^ W[23] ^ W[17] ^ W[15]; W[31] = S1(TEMP);
+
+  /* process the remainder of the array */
+  for (t=32; t < 80; t++) {
+    TEMP = W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16];
+    W[t] = S1(TEMP);      
+  }
+
+  A = H0; B = H1; C = H2; D = H3; E = H4;
+
+  for (t=0; t < 20; t++) {
+    TEMP = S5(A) + f0(B,C,D) + E + W[t] + SHA_K0;
+    E = D; D = C; C = S30(B); B = A; A = TEMP;
+  }
+  for (   ; t < 40; t++) {
+    TEMP = S5(A) + f1(B,C,D) + E + W[t] + SHA_K1;
+    E = D; D = C; C = S30(B); B = A; A = TEMP;
+  }
+  for (   ; t < 60; t++) {
+    TEMP = S5(A) + f2(B,C,D) + E + W[t] + SHA_K2;
+    E = D; D = C; C = S30(B); B = A; A = TEMP;
+  }
+  for (   ; t < 80; t++) {
+    TEMP = S5(A) + f3(B,C,D) + E + W[t] + SHA_K3;
+    E = D; D = C; C = S30(B); B = A; A = TEMP;
+  }
+
+  hash_value[0] = H0 + A;
+  hash_value[1] = H1 + B;
+  hash_value[2] = H2 + C;
+  hash_value[3] = H3 + D;
+  hash_value[4] = H4 + E;
+
+  return;
+}
+
+void
+sha1_init(sha1_ctx_t *ctx) {
+
+  /* initialize state vector */
+  ctx->H[0] = 0x67452301;
+  ctx->H[1] = 0xefcdab89;
+  ctx->H[2] = 0x98badcfe;
+  ctx->H[3] = 0x10325476;
+  ctx->H[4] = 0xc3d2e1f0;
+
+  /* indicate that message buffer is empty */
+  ctx->octets_in_buffer = 0;
+
+  /* reset message bit-count to zero */
+  ctx->num_bits_in_msg = 0;
+
+}
+
+void
+sha1_update(sha1_ctx_t *ctx, const uint8_t *msg, int octets_in_msg) {
+  int i;
+  uint8_t *buf = (uint8_t *)ctx->M;
+
+  /* update message bit-count */
+  ctx->num_bits_in_msg += octets_in_msg * 8;
+
+  /* loop over 16-word blocks of M */
+  while (octets_in_msg > 0) {
+
+    if (octets_in_msg + ctx->octets_in_buffer >= 64) {
+
+      /* 
+       * copy words of M into msg buffer until that buffer is full,
+       * converting them into host byte order as needed
+       */
+      octets_in_msg -= (64 - ctx->octets_in_buffer);
+      for (i=ctx->octets_in_buffer; i < 64; i++) 
+	buf[i] = *msg++;
+      ctx->octets_in_buffer = 0;
+
+      /* process a whole block */
+
+      debug_print(mod_sha1, "(update) running sha1_core()", NULL);
+
+      sha1_core(ctx->M, ctx->H);
+
+    } else {
+
+      debug_print(mod_sha1, "(update) not running sha1_core()", NULL);
+
+      for (i=ctx->octets_in_buffer; 
+	   i < (ctx->octets_in_buffer + octets_in_msg); i++)
+	buf[i] = *msg++;
+      ctx->octets_in_buffer += octets_in_msg;
+      octets_in_msg = 0;
+    }
+
+  }
+
+}
+
+/*
+ * sha1_final(ctx, output) computes the result for ctx and copies it
+ * into the twenty octets located at *output
+ */
+
+void
+sha1_final(sha1_ctx_t *ctx, uint32_t *output) {
+  uint32_t A, B, C, D, E, TEMP;
+  uint32_t W[80];  
+  int i, t;
+
+  /*
+   * process the remaining octets_in_buffer, padding and terminating as
+   * necessary
+   */
+  {
+    int tail = ctx->octets_in_buffer % 4;
+
+    /* copy/xor message into array */
+    for (i=0; i < (ctx->octets_in_buffer+3)/4; i++) 
+      W[i]  = be32_to_cpu(ctx->M[i]);
+
+    /* set the high bit of the octet immediately following the message */
+    switch (tail) {
+    case (3):
+      W[i-1] = (be32_to_cpu(ctx->M[i-1]) & 0xffffff00) | 0x80;
+      W[i] = 0x0;
+      break;
+    case (2):      
+      W[i-1] = (be32_to_cpu(ctx->M[i-1]) & 0xffff0000) | 0x8000;
+      W[i] = 0x0;
+      break;
+    case (1):
+      W[i-1] = (be32_to_cpu(ctx->M[i-1]) & 0xff000000) | 0x800000;
+      W[i] = 0x0;
+      break;
+    case (0):
+      W[i] = 0x80000000;
+      break;
+    }
+
+    /* zeroize remaining words */
+    for (i++   ; i < 15; i++)
+      W[i] = 0x0;
+
+    /* 
+     * if there is room at the end of the word array, then set the
+     * last word to the bit-length of the message; otherwise, set that
+     * word to zero and then we need to do one more run of the
+     * compression algo.
+     */
+    if (ctx->octets_in_buffer < 56) 
+      W[15] = ctx->num_bits_in_msg;
+    else if (ctx->octets_in_buffer < 60)
+      W[15] = 0x0;
+
+    /* process the word array */
+    for (t=16; t < 80; t++) {
+      TEMP = W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16];
+      W[t] = S1(TEMP);
+    }
+
+    A = ctx->H[0]; 
+    B = ctx->H[1]; 
+    C = ctx->H[2]; 
+    D = ctx->H[3]; 
+    E = ctx->H[4];
+
+    for (t=0; t < 20; t++) {
+      TEMP = S5(A) + f0(B,C,D) + E + W[t] + SHA_K0;
+      E = D; D = C; C = S30(B); B = A; A = TEMP;
+    }
+    for (   ; t < 40; t++) {
+      TEMP = S5(A) + f1(B,C,D) + E + W[t] + SHA_K1;
+      E = D; D = C; C = S30(B); B = A; A = TEMP;
+    }
+    for (   ; t < 60; t++) {
+      TEMP = S5(A) + f2(B,C,D) + E + W[t] + SHA_K2;
+      E = D; D = C; C = S30(B); B = A; A = TEMP;
+    }
+    for (   ; t < 80; t++) {
+      TEMP = S5(A) + f3(B,C,D) + E + W[t] + SHA_K3;
+      E = D; D = C; C = S30(B); B = A; A = TEMP;
+    }
+
+    ctx->H[0] += A;
+    ctx->H[1] += B;
+    ctx->H[2] += C;
+    ctx->H[3] += D;
+    ctx->H[4] += E;
+
+  }
+
+  debug_print(mod_sha1, "(final) running sha1_core()", NULL);
+
+  if (ctx->octets_in_buffer >= 56) {
+
+    debug_print(mod_sha1, "(final) running sha1_core() again", NULL);
+
+    /* we need to do one final run of the compression algo */
+
+    /* 
+     * set initial part of word array to zeros, and set the 
+     * final part to the number of bits in the message
+     */
+    for (i=0; i < 15; i++)
+      W[i] = 0x0;
+    W[15] = ctx->num_bits_in_msg;
+
+    /* process the word array */
+    for (t=16; t < 80; t++) {
+      TEMP = W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16];
+      W[t] = S1(TEMP);
+    }
+
+    A = ctx->H[0]; 
+    B = ctx->H[1]; 
+    C = ctx->H[2]; 
+    D = ctx->H[3]; 
+    E = ctx->H[4];
+
+    for (t=0; t < 20; t++) {
+      TEMP = S5(A) + f0(B,C,D) + E + W[t] + SHA_K0;
+      E = D; D = C; C = S30(B); B = A; A = TEMP;
+    }
+    for (   ; t < 40; t++) {
+      TEMP = S5(A) + f1(B,C,D) + E + W[t] + SHA_K1;
+      E = D; D = C; C = S30(B); B = A; A = TEMP;
+    }
+    for (   ; t < 60; t++) {
+      TEMP = S5(A) + f2(B,C,D) + E + W[t] + SHA_K2;
+      E = D; D = C; C = S30(B); B = A; A = TEMP;
+    }
+    for (   ; t < 80; t++) {
+      TEMP = S5(A) + f3(B,C,D) + E + W[t] + SHA_K3;
+      E = D; D = C; C = S30(B); B = A; A = TEMP;
+    }
+
+    ctx->H[0] += A;
+    ctx->H[1] += B;
+    ctx->H[2] += C;
+    ctx->H[3] += D;
+    ctx->H[4] += E;
+  }
+
+  /* copy result into output buffer */
+  output[0] = be32_to_cpu(ctx->H[0]);
+  output[1] = be32_to_cpu(ctx->H[1]);
+  output[2] = be32_to_cpu(ctx->H[2]);
+  output[3] = be32_to_cpu(ctx->H[3]);
+  output[4] = be32_to_cpu(ctx->H[4]);
+
+  /* indicate that message buffer in context is empty */
+  ctx->octets_in_buffer = 0;
+
+  return;
+}
+
+
+
diff --git a/crypto/include/aes.h b/crypto/include/aes.h
new file mode 100644
index 0000000..d965280
--- /dev/null
+++ b/crypto/include/aes.h
@@ -0,0 +1,84 @@
+/*
+ * aes.h
+ *
+ * header file for the AES block cipher
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef _AES_H
+#define _AES_H
+
+#include "config.h"
+
+#include "datatypes.h"
+#include "gf2_8.h"
+
+/* aes internals */
+
+typedef v128_t aes_expanded_key_t[11];
+
+void
+aes_expand_encryption_key(const v128_t *key,
+			  aes_expanded_key_t expanded_key);
+
+void
+aes_expand_decryption_key(const v128_t *key,
+			  aes_expanded_key_t expanded_key);
+
+void
+aes_encrypt(v128_t *plaintext, const aes_expanded_key_t exp_key);
+
+void
+aes_decrypt(v128_t *plaintext, const aes_expanded_key_t exp_key);
+
+#if 0
+/*
+ * internal functions 
+ */
+
+void
+aes_init_sbox(void);
+
+void
+aes_compute_tables(void);
+#endif 
+
+#endif /* _AES_H */
diff --git a/crypto/include/aes_cbc.h b/crypto/include/aes_cbc.h
new file mode 100644
index 0000000..9fb6682
--- /dev/null
+++ b/crypto/include/aes_cbc.h
@@ -0,0 +1,50 @@
+/*
+ * aes_cbc.h
+ *
+ * Header for AES Cipher Blobk Chaining Mode.
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ *
+ */
+
+#ifndef AES_CBC_H
+#define AES_CBC_H
+
+#include "aes.h"
+#include "cipher.h"
+
+typedef struct {
+  v128_t   state;                  /* cipher chaining state            */
+  v128_t   previous;               /* previous ciphertext block        */
+  aes_expanded_key_t expanded_key; /* the cipher key                   */
+} aes_cbc_ctx_t;
+
+err_status_t
+aes_cbc_set_key(aes_cbc_ctx_t *c,
+		const unsigned char *key); 
+
+err_status_t
+aes_cbc_encrypt(aes_cbc_ctx_t *c, 
+		unsigned char *buf, 
+		unsigned int  *bytes_in_data);
+
+err_status_t
+aes_cbc_context_init(aes_cbc_ctx_t *c, const uint8_t *key, 
+		     cipher_direction_t dir);
+
+err_status_t
+aes_cbc_set_iv(aes_cbc_ctx_t *c, void *iv);
+
+err_status_t
+aes_cbc_nist_encrypt(aes_cbc_ctx_t *c,
+		     unsigned char *data, 
+		     unsigned int *bytes_in_data);
+
+err_status_t
+aes_cbc_nist_decrypt(aes_cbc_ctx_t *c,
+		     unsigned char *data, 
+		     unsigned int *bytes_in_data);
+
+#endif /* AES_CBC_H */
+
diff --git a/crypto/include/aes_icm.h b/crypto/include/aes_icm.h
new file mode 100644
index 0000000..17a1ddb
--- /dev/null
+++ b/crypto/include/aes_icm.h
@@ -0,0 +1,56 @@
+/*
+ * aes_icm.h
+ *
+ * Header for AES Integer Counter Mode.
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ *
+ */
+
+#ifndef AES_ICM_H
+#define AES_ICM_H
+
+#include "aes.h"
+#include "cipher.h"
+
+typedef struct {
+  v128_t   counter;                /* holds the counter value          */
+  v128_t   offset;                 /* initial offset value             */
+  v128_t   keystream_buffer;       /* buffers bytes of keystream       */
+  aes_expanded_key_t expanded_key; /* the cipher key                   */
+  int      bytes_in_buffer;        /* number of unused bytes in buffer */
+} aes_icm_ctx_t;
+
+
+err_status_t
+aes_icm_context_init(aes_icm_ctx_t *c,
+		     const unsigned char *key); 
+
+err_status_t
+aes_icm_set_iv(aes_icm_ctx_t *c, void *iv);
+
+err_status_t
+aes_icm_encrypt(aes_icm_ctx_t *c,
+		unsigned char *buf, unsigned int *bytes_to_encr);
+
+err_status_t
+aes_icm_output(aes_icm_ctx_t *c,
+	       unsigned char *buf, int bytes_to_output);
+
+err_status_t 
+aes_icm_dealloc(cipher_t *c);
+ 
+err_status_t 
+aes_icm_encrypt_ismacryp(aes_icm_ctx_t *c, 
+			 unsigned char *buf, 
+			 unsigned int *enc_len, 
+			 int forIsmacryp);
+ 
+err_status_t 
+aes_icm_alloc_ismacryp(cipher_t **c, 
+		       int key_len, 
+		       int forIsmacryp);
+
+#endif /* AES_ICM_H */
+
diff --git a/crypto/include/alloc.h b/crypto/include/alloc.h
new file mode 100644
index 0000000..5980eed
--- /dev/null
+++ b/crypto/include/alloc.h
@@ -0,0 +1,57 @@
+/*
+ * alloc.h
+ *
+ * interface to memory allocation and deallocation, with optional debugging 
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef CRYPTO_ALLOC_H
+#define CRYPTO_ALLOC_H
+
+#include "datatypes.h"
+
+void *
+crypto_alloc(size_t size);
+
+void
+crypto_free(void *ptr);
+
+#endif /* CRYPTO_ALLOC_H */
diff --git a/crypto/include/auth.h b/crypto/include/auth.h
new file mode 100644
index 0000000..295b5f6
--- /dev/null
+++ b/crypto/include/auth.h
@@ -0,0 +1,159 @@
+/*
+ * auth.h
+ *
+ * common interface to authentication functions
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef AUTH_H
+#define AUTH_H
+
+#include "datatypes.h"          
+#include "err.h"                /* error codes    */
+
+typedef struct auth_type_t *auth_type_pointer;
+typedef struct auth_t      *auth_pointer_t;
+
+typedef err_status_t (*auth_alloc_func)
+     (auth_pointer_t *ap, int key_len, int out_len);
+
+typedef err_status_t (*auth_init_func)
+     (void *state, const uint8_t *key, int key_len);
+
+typedef err_status_t (*auth_dealloc_func)(auth_pointer_t ap);
+
+typedef err_status_t (*auth_compute_func)
+     (void *state, uint8_t *buffer, int octets_to_auth, 
+      int tag_len, uint8_t *tag);
+
+typedef err_status_t (*auth_update_func)
+     (void *state, uint8_t *buffer, int octets_to_auth);
+
+typedef err_status_t (*auth_start_func)(void *state);
+     
+/* some syntactic sugar on these function types */
+
+#define auth_type_alloc(at, a, klen, outlen)                        \
+                 ((at)->alloc((a), (klen), (outlen)))
+
+#define auth_init(a, key)                                           \
+                 (((a)->type)->init((a)->state, (key), ((a)->key_len)))
+
+#define auth_compute(a, buf, len, res)                              \
+       (((a)->type)->compute((a)->state, (buf), (len), (a)->out_len, (res)))
+
+#define auth_update(a, buf, len)                                    \
+       (((a)->type)->update((a)->state, (buf), (len)))
+
+#define auth_start(a)(((a)->type)->start((a)->state))
+
+#define auth_dealloc(c) (((c)->type)->dealloc(c))
+
+/* functions to get information about a particular auth_t */
+
+int
+auth_get_key_length(const struct auth_t *a);
+
+int
+auth_get_tag_length(const struct auth_t *a);
+
+int
+auth_get_prefix_length(const struct auth_t *a);
+
+/*
+ * auth_test_case_t is a (list of) key/message/tag values that are
+ * known to be correct for a particular cipher.  this data can be used
+ * to test an implementation in an on-the-fly self test of the
+ * correcness of the implementation.  (see the auth_type_self_test()
+ * function below)
+ */
+
+typedef struct auth_test_case_t {
+  int key_length_octets;                    /* octets in key            */
+  uint8_t *key;                             /* key                      */
+  int data_length_octets;                   /* octets in data           */ 
+  uint8_t *data;                            /* data                     */
+  int tag_length_octets;                    /* octets in tag            */
+  uint8_t *tag;                             /* tag                      */
+  struct auth_test_case_t *next_test_case;  /* pointer to next testcase */
+} auth_test_case_t;
+
+/* auth_type_t */
+
+typedef struct auth_type_t {
+  auth_alloc_func      alloc;
+  auth_dealloc_func    dealloc;
+  auth_init_func       init;
+  auth_compute_func    compute;
+  auth_update_func     update;
+  auth_start_func      start;
+  char                *description;
+  int                  ref_count;
+  auth_test_case_t    *test_data;
+  debug_module_t      *debug;
+} auth_type_t;
+
+typedef struct auth_t {
+  auth_type_t *type;
+  void        *state;                   
+  int          out_len;           /* length of output tag in octets */
+  int          key_len;           /* length of key in octets        */
+  int          prefix_len;        /* length of keystream prefix     */
+} auth_t;
+
+/* 
+ * auth_type_self_test() tests an auth_type against test cases
+ * provided in an array of values of key/message/tag that is known to
+ * be good
+ */
+
+err_status_t
+auth_type_self_test(const auth_type_t *at);
+
+/*
+ * auth_type_get_ref_count(at) returns the reference count (the number
+ * of instantiations) of the auth_type_t at
+ */
+
+int
+auth_type_get_ref_count(const auth_type_t *at);
+
+#endif /* AUTH_H */
diff --git a/crypto/include/cipher.h b/crypto/include/cipher.h
new file mode 100644
index 0000000..96ee9dc
--- /dev/null
+++ b/crypto/include/cipher.h
@@ -0,0 +1,218 @@
+/*
+ * cipher.h
+ *
+ * common interface to ciphers
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef CIPHER_H
+#define CIPHER_H
+
+#include "datatypes.h"          
+#include "rdbx.h"               /* for xtd_seq_num_t */
+#include "err.h"                /* for error codes  */
+
+
+/**
+ * @brief cipher_direction_t defines a particular cipher operation. 
+ *
+ * A cipher_direction_t is an enum that describes a particular cipher
+ * operation, i.e. encryption or decryption.  For some ciphers, this
+ * distinction does not matter, but for others, it is essential.
+ */
+
+typedef enum { 
+  direction_encrypt, /**< encryption (convert plaintext to ciphertext) */
+  direction_decrypt, /**< decryption (convert ciphertext to plaintext) */
+  direction_any      /**< encryption or decryption                     */
+} cipher_direction_t;
+
+/*
+ * the cipher_pointer and cipher_type_pointer definitions are needed
+ * as cipher_t and cipher_type_t are not yet defined
+ */
+
+typedef struct cipher_type_t *cipher_type_pointer_t;
+typedef struct cipher_t      *cipher_pointer_t;
+
+/*
+ *  a cipher_alloc_func_t allocates (but does not initialize) a cipher_t 
+ */
+
+typedef err_status_t (*cipher_alloc_func_t)
+     (cipher_pointer_t *cp, int key_len);
+
+/* 
+ * a cipher_init_func_t [re-]initializes a cipher_t with a given key
+ * and direction (i.e., encrypt or decrypt)
+ */
+
+typedef err_status_t (*cipher_init_func_t)
+  (void *state, const uint8_t *key, cipher_direction_t dir);
+
+/* a cipher_dealloc_func_t de-allocates a cipher_t */
+
+typedef err_status_t (*cipher_dealloc_func_t)(cipher_pointer_t cp);
+
+/* a cipher_set_segment_func_t sets the segment index of a cipher_t */
+
+typedef err_status_t (*cipher_set_segment_func_t)
+     (void *state, xtd_seq_num_t idx);
+
+/* a cipher_encrypt_func_t encrypts data in-place */
+
+typedef err_status_t (*cipher_encrypt_func_t)
+     (void *state, uint8_t *buffer, unsigned int *octets_to_encrypt);
+
+/* a cipher_decrypt_func_t decrypts data in-place */
+
+typedef err_status_t (*cipher_decrypt_func_t)
+     (void *state, uint8_t *buffer, unsigned int *octets_to_decrypt);
+
+/* 
+ * a cipher_set_nonce_seq_func_t function sets both the nonce
+ * and the extended sequence number
+ */
+
+typedef err_status_t (*cipher_set_iv_func_t)
+     (cipher_pointer_t cp, void *iv);
+
+/*
+ * cipher_test_case_t is a (list of) key, salt, xtd_seq_num_t,
+ * plaintext, and ciphertext values that are known to be correct for a
+ * particular cipher.  this data can be used to test an implementation
+ * in an on-the-fly self test of the correcness of the implementation.
+ * (see the cipher_type_self_test() function below)
+ */
+
+typedef struct cipher_test_case_t {
+  int key_length_octets;                      /* octets in key            */
+  uint8_t *key;                               /* key                      */
+  uint8_t *idx;                               /* packet index             */
+  int plaintext_length_octets;                /* octets in plaintext      */ 
+  uint8_t *plaintext;                         /* plaintext                */
+  int ciphertext_length_octets;               /* octets in plaintext      */ 
+  uint8_t *ciphertext;                        /* ciphertext               */
+  struct cipher_test_case_t *next_test_case;  /* pointer to next testcase */
+} cipher_test_case_t;
+
+/* cipher_type_t defines the 'metadata' for a particular cipher type */
+
+typedef struct cipher_type_t {
+  cipher_alloc_func_t         alloc;
+  cipher_dealloc_func_t       dealloc;
+  cipher_init_func_t          init;
+  cipher_encrypt_func_t       encrypt;
+  cipher_encrypt_func_t       decrypt;
+  cipher_set_iv_func_t        set_iv;
+  char                       *description;
+  int                         ref_count;
+  cipher_test_case_t         *test_data;
+  debug_module_t             *debug;
+} cipher_type_t;
+
+/*
+ * cipher_t defines an instantiation of a particular cipher, with fixed
+ * key length, key and salt values
+ */
+
+typedef struct cipher_t {
+  cipher_type_t *type;
+  void          *state;
+  int            key_len;
+#ifdef FORCE_64BIT_ALIGN
+  int            pad;
+#endif
+} cipher_t;
+
+/* some syntactic sugar on these function types */
+
+#define cipher_type_alloc(ct, c, klen) ((ct)->alloc((c), (klen)))
+
+#define cipher_dealloc(c) (((c)->type)->dealloc(c))
+
+#define cipher_init(c, k, dir) (((c)->type)->init(((c)->state), (k), (dir)))
+
+#define cipher_encrypt(c, buf, len) \
+        (((c)->type)->encrypt(((c)->state), (buf), (len)))
+
+#define cipher_decrypt(c, buf, len) \
+        (((c)->type)->decrypt(((c)->state), (buf), (len)))
+
+#define cipher_set_iv(c, n)                           \
+  ((c) ? (((c)->type)->set_iv(((cipher_pointer_t)(c)->state), (n))) :   \
+                                err_status_no_such_op)  
+
+err_status_t
+cipher_output(cipher_t *c, uint8_t *buffer, int num_octets_to_output);
+
+
+/* some bookkeeping functions */
+
+int
+cipher_get_key_length(const cipher_t *c);
+
+
+/* 
+ * cipher_type_self_test() tests a cipher against test cases provided in 
+ * an array of values of key/xtd_seq_num_t/plaintext/ciphertext 
+ * that is known to be good
+ */
+
+err_status_t
+cipher_type_self_test(const cipher_type_t *ct);
+
+
+/*
+ * cipher_bits_per_second(c, l, t) computes (and estimate of) the
+ * number of bits that a cipher implementation can encrypt in a second
+ * 
+ * c is a cipher (which MUST be allocated and initialized already), l
+ * is the length in octets of the test data to be encrypted, and t is
+ * the number of trials
+ *
+ * if an error is encountered, then the value 0 is returned
+ */
+
+uint64_t
+cipher_bits_per_second(cipher_t *c, int octets_in_buffer, int num_trials);
+
+#endif /* CIPHER_H */
diff --git a/crypto/include/config.h b/crypto/include/config.h
new file mode 100644
index 0000000..9c66dd1
--- /dev/null
+++ b/crypto/include/config.h
@@ -0,0 +1,202 @@
+/* crypto/include/config.h.  Generated by configure.  */
+/* config_in.h.  Generated from configure.in by autoheader.  */
+
+/* Define if building for a CISC machine (e.g. Intel). */
+#define CPU_CISC 1
+
+/* Define if building for a RISC machine (assume slow byte access). */
+/* #undef CPU_RISC */
+
+/* Path to random device */
+#define DEV_URANDOM "/dev/urandom"
+
+/* Define to compile in dynamic debugging system. */
+#define ENABLE_DEBUGGING 1
+
+/* Report errors to this file. */
+/* #undef ERR_REPORTING_FILE */
+
+/* Define to use logging to stdout. */
+#define ERR_REPORTING_STDOUT 1
+
+/* Define this to use ISMAcryp code. */
+/* #undef GENERIC_AESICM */
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#define HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the <byteswap.h> header file. */
+#define HAVE_BYTESWAP_H 1
+
+/* Define to 1 if you have the `inet_aton' function. */
+#define HAVE_INET_ATON 1
+
+/* Define to 1 if the system has the type `int16_t'. */
+#define HAVE_INT16_T 1
+
+/* Define to 1 if the system has the type `int32_t'. */
+#define HAVE_INT32_T 1
+
+/* Define to 1 if the system has the type `int8_t'. */
+#define HAVE_INT8_T 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `socket' library (-lsocket). */
+/* #undef HAVE_LIBSOCKET */
+
+/* Define to 1 if you have the <machine/types.h> header file. */
+/* #undef HAVE_MACHINE_TYPES_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#define HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the `socket' function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <syslog.h> header file. */
+#define HAVE_SYSLOG_H 1
+
+/* Define to 1 if you have the <sys/int_types.h> header file. */
+/* #undef HAVE_SYS_INT_TYPES_H */
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#define HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#define HAVE_SYS_UIO_H 1
+
+/* Define to 1 if the system has the type `uint16_t'. */
+#define HAVE_UINT16_T 1
+
+/* Define to 1 if the system has the type `uint32_t'. */
+#define HAVE_UINT32_T 1
+
+/* Define to 1 if the system has the type `uint64_t'. */
+#define HAVE_UINT64_T 1
+
+/* Define to 1 if the system has the type `uint8_t'. */
+#define HAVE_UINT8_T 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the `usleep' function. */
+#define HAVE_USLEEP 1
+
+/* Define to 1 if you have the <windows.h> header file. */
+/* #undef HAVE_WINDOWS_H */
+
+/* Define to 1 if you have the <winsock2.h> header file. */
+/* #undef HAVE_WINSOCK2_H */
+
+/* Define to use X86 inlined assembly code */
+/* #undef HAVE_X86 */
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME ""
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING ""
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION ""
+
+/* The size of a `unsigned long', as computed by sizeof. */
+#if defined(__GNUC__) && defined(__LP64__)
+#define SIZEOF_UNSIGNED_LONG 8
+#else
+#define SIZEOF_UNSIGNED_LONG 4
+#endif
+
+/* The size of a `unsigned long long', as computed by sizeof. */
+#define SIZEOF_UNSIGNED_LONG_LONG 8
+
+/* Define to use GDOI. */
+/* #undef SRTP_GDOI */
+
+/* Define to compile for kernel contexts. */
+/* #undef SRTP_KERNEL */
+
+/* Define to compile for Linux kernel context. */
+/* #undef SRTP_KERNEL_LINUX */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Write errors to this file */
+/* #undef USE_ERR_REPORTING_FILE */
+
+/* Define to use syslog logging. */
+/* #undef USE_SYSLOG */
+
+/* Define to 1 if your processor stores words with the most significant byte
+   first (like Motorola and SPARC, unlike Intel and VAX). */
+/* #undef WORDS_BIGENDIAN */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+/* #undef inline */
+#endif
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* Adjustments to build under MSVC. */
+#if defined(WIN32)
+#undef DEV_URANDOM
+#undef HAVE_BYTESWAP_H
+#undef HAVE_INT16_T
+#undef HAVE_INT32_T
+#undef HAVE_INT8_T
+#undef HAVE_INTTYPES_H
+#undef HAVE_UINT16_T
+#undef HAVE_UINT32_T
+#undef HAVE_UINT64_T
+#undef HAVE_UINT8_T
+#undef HAVE_NETINET_IN_H
+#define HAVE_WINSOCK2_H
+#undef HAVE_STDINT_H
+#ifndef __cplusplus
+#define inline
+#endif
+typedef short int16_t;
+#elif defined(IOS)
+#undef HAVE_BYTESWAP_H
+/* Adjustments to build on MacOS. */
+#elif defined(OSX)
+#undef DEV_URANDOM
+#undef HAVE_BYTESWAP_H
+#endif
diff --git a/crypto/include/crypto.h b/crypto/include/crypto.h
new file mode 100644
index 0000000..0e9667d
--- /dev/null
+++ b/crypto/include/crypto.h
@@ -0,0 +1,43 @@
+/*
+ * crypto.h
+ *
+ * API for libcrypto
+ * 
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+#ifndef CRYPTO_H
+#define CRYPTO_H
+
+/** 
+ *  @brief A cipher_type_id_t is an identifier for a particular cipher
+ *  type.
+ *
+ *  A cipher_type_id_t is an integer that represents a particular
+ *  cipher type, e.g. the Advanced Encryption Standard (AES).  A
+ *  NULL_CIPHER is avaliable; this cipher leaves the data unchanged,
+ *  and can be selected to indicate that no encryption is to take
+ *  place.
+ * 
+ *  @ingroup Ciphers
+ */
+typedef uint32_t cipher_type_id_t; 
+
+/**
+ *  @brief An auth_type_id_t is an identifier for a particular authentication
+ *   function.
+ *
+ *  An auth_type_id_t is an integer that represents a particular
+ *  authentication function type, e.g. HMAC-SHA1.  A NULL_AUTH is
+ *  avaliable; this authentication function performs no computation,
+ *  and can be selected to indicate that no authentication is to take
+ *  place.
+ *  
+ *  @ingroup Authentication
+ */
+typedef uint32_t auth_type_id_t;
+
+#endif /* CRYPTO_H */
+
+
diff --git a/crypto/include/crypto_kernel.h b/crypto/include/crypto_kernel.h
new file mode 100644
index 0000000..b8cd9be
--- /dev/null
+++ b/crypto/include/crypto_kernel.h
@@ -0,0 +1,258 @@
+/*
+ * crypto_kernel.h
+ *
+ * header for the cryptographic kernel
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright(c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef CRYPTO_KERNEL
+#define CRYPTO_KERNEL
+
+#include "rand_source.h"       
+#include "prng.h"
+#include "cipher.h"    
+#include "auth.h"
+#include "cryptoalg.h"
+#include "stat.h"
+#include "err.h"
+#include "crypto_types.h"
+#include "key.h"
+#include "crypto.h"
+
+/*
+ * crypto_kernel_state_t defines the possible states:
+ *
+ *    insecure - not yet initialized
+ *    secure   - initialized and passed self-tests
+ */
+
+typedef enum {
+  crypto_kernel_state_insecure,
+  crypto_kernel_state_secure
+} crypto_kernel_state_t;
+
+/* 
+ * linked list of cipher types 
+ */
+
+typedef struct kernel_cipher_type {
+  cipher_type_id_t  id;
+  cipher_type_t    *cipher_type;
+  struct kernel_cipher_type *next;
+} kernel_cipher_type_t;
+
+/* 
+ * linked list of auth types 
+ */
+
+typedef struct kernel_auth_type {
+  auth_type_id_t  id;
+  auth_type_t    *auth_type;
+  struct kernel_auth_type *next;
+} kernel_auth_type_t;
+
+/*
+ * linked list of debug modules 
+ */
+
+typedef struct kernel_debug_module {
+  debug_module_t *mod;
+  struct kernel_debug_module *next;
+} kernel_debug_module_t;
+
+
+/*
+ * crypto_kernel_t is the data structure for the crypto kernel
+ *
+ * note that there is *exactly one* instance of this data type,
+ * a global variable defined in crypto_kernel.c
+ */
+
+typedef struct {
+  crypto_kernel_state_t state;              /* current state of kernel     */
+  kernel_cipher_type_t *cipher_type_list;   /* list of all cipher types    */
+  kernel_auth_type_t   *auth_type_list;     /* list of all auth func types */
+  kernel_debug_module_t *debug_module_list; /* list of all debug modules   */
+} crypto_kernel_t;
+
+
+/*
+ * crypto_kernel_t external api
+ */
+
+
+/*
+ * The function crypto_kernel_init() initialized the crypto kernel and
+ * runs the self-test operations on the random number generators and
+ * crypto algorithms.  Possible return values are:
+ *
+ *    err_status_ok     initialization successful
+ *    <other>           init failure 
+ *
+ * If any value other than err_status_ok is returned, the
+ * crypto_kernel MUST NOT be used.  
+ */
+
+err_status_t
+crypto_kernel_init(void);
+
+
+/*
+ * The function crypto_kernel_shutdown() de-initializes the
+ * crypto_kernel, zeroizes keys and other cryptographic material, and
+ * deallocates any dynamically allocated memory.  Possible return
+ * values are:
+ *
+ *    err_status_ok     shutdown successful
+ *    <other>           shutdown failure 
+ *
+ */
+
+err_status_t
+crypto_kernel_shutdown(void);
+
+/*
+ * The function crypto_kernel_stats() checks the the crypto_kernel,
+ * running tests on the ciphers, auth funcs, and rng, and prints out a
+ * status report.  Possible return values are:
+ *
+ *    err_status_ok     all tests were passed
+ *    <other>           a test failed 
+ *
+ */
+
+err_status_t
+crypto_kernel_status(void);
+
+
+/*
+ * crypto_kernel_list_debug_modules() outputs a list of debugging modules
+ *
+ */
+
+err_status_t
+crypto_kernel_list_debug_modules(void);
+
+/*
+ * crypto_kernel_load_cipher_type()
+ *
+ */
+
+err_status_t
+crypto_kernel_load_cipher_type(cipher_type_t *ct, cipher_type_id_t id);
+
+err_status_t
+crypto_kernel_load_auth_type(auth_type_t *ct, auth_type_id_t id);
+
+err_status_t
+crypto_kernel_load_debug_module(debug_module_t *new_dm);
+
+/*
+ * crypto_kernel_alloc_cipher(id, cp, key_len); 
+ *
+ * allocates a cipher of type id at location *cp, with key length
+ * key_len octets.  Return values are:
+ * 
+ *    err_status_ok           no problems
+ *    err_status_alloc_fail   an allocation failure occured
+ *    err_status_fail         couldn't find cipher with identifier 'id'
+ */
+
+err_status_t
+crypto_kernel_alloc_cipher(cipher_type_id_t id, 
+			   cipher_pointer_t *cp, 
+			   int key_len);
+
+/*
+ * crypto_kernel_alloc_auth(id, ap, key_len, tag_len); 
+ *
+ * allocates an auth function of type id at location *ap, with key
+ * length key_len octets and output tag length of tag_len.  Return
+ * values are:
+ * 
+ *    err_status_ok           no problems
+ *    err_status_alloc_fail   an allocation failure occured
+ *    err_status_fail         couldn't find auth with identifier 'id'
+ */
+
+err_status_t
+crypto_kernel_alloc_auth(auth_type_id_t id, 
+			 auth_pointer_t *ap, 
+			 int key_len,
+			 int tag_len);
+
+
+/*
+ * crypto_kernel_set_debug_module(mod_name, v)
+ * 
+ * sets dynamic debugging to the value v (0 for off, 1 for on) for the
+ * debug module with the name mod_name
+ *
+ * returns err_status_ok on success, err_status_fail otherwise
+ */
+
+err_status_t
+crypto_kernel_set_debug_module(char *mod_name, int v);
+
+/**
+ * @brief writes a random octet string.
+ *
+ * The function call crypto_get_random(dest, len) writes len octets of
+ * random data to the location to which dest points, and returns an
+ * error code.  This error code @b must be checked, and if a failure is
+ * reported, the data in the buffer @b must @b not be used.
+ * 
+ * @warning If the return code is not checked, then non-random
+ *          data may be in the buffer.  This function will fail
+ *          unless it is called after crypto_kernel_init().
+ *
+ * @return
+ *     - err_status_ok    if no problems occured.
+ *     - [other]          a problem occured, and no assumptions should
+ *                        be made about the contents of the destination
+ *                        buffer.
+ *
+ * @ingroup SRTP
+ */
+err_status_t
+crypto_get_random(unsigned char *buffer, unsigned int length);
+     
+#endif /* CRYPTO_KERNEL */
diff --git a/crypto/include/crypto_math.h b/crypto/include/crypto_math.h
new file mode 100644
index 0000000..52f0837
--- /dev/null
+++ b/crypto/include/crypto_math.h
@@ -0,0 +1,239 @@
+/*
+ * math.h
+ *
+ * crypto math operations and data types
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef MATH_H
+#define MATH_H
+
+#include "datatypes.h"
+
+unsigned char
+v32_weight(v32_t a);
+
+unsigned char
+v32_distance(v32_t x, v32_t y);
+
+unsigned int
+v32_dot_product(v32_t a, v32_t b);
+
+char *
+v16_bit_string(v16_t x);
+
+char *
+v32_bit_string(v32_t x);
+
+char *
+v64_bit_string(const v64_t *x);
+
+char *
+octet_hex_string(uint8_t x);
+
+char *
+v16_hex_string(v16_t x);
+
+char *
+v32_hex_string(v32_t x);
+
+char *
+v64_hex_string(const v64_t *x);
+
+int
+hex_char_to_nibble(uint8_t c);
+
+int
+is_hex_string(char *s);
+
+v16_t
+hex_string_to_v16(char *s);
+
+v32_t
+hex_string_to_v32(char *s);
+
+v64_t
+hex_string_to_v64(char *s);
+
+/* the matrix A[] is stored in column format, i.e., A[i] is
+   the ith column of the matrix */
+
+uint8_t 
+A_times_x_plus_b(uint8_t A[8], uint8_t x, uint8_t b);
+
+void
+v16_copy_octet_string(v16_t *x, const uint8_t s[2]);
+
+void
+v32_copy_octet_string(v32_t *x, const uint8_t s[4]);
+
+void
+v64_copy_octet_string(v64_t *x, const uint8_t s[8]);
+
+void
+v128_add(v128_t *z, v128_t *x, v128_t *y);
+
+int
+octet_string_is_eq(uint8_t *a, uint8_t *b, int len);
+
+void
+octet_string_set_to_zero(uint8_t *s, int len);
+
+
+
+/* 
+ * the matrix A[] is stored in column format, i.e., A[i] is the ith
+ * column of the matrix
+*/
+uint8_t 
+A_times_x_plus_b(uint8_t A[8], uint8_t x, uint8_t b);
+
+
+#if 0
+#if WORDS_BIGENDIAN
+
+#define _v128_add(z, x, y) {                    \
+  uint64_t tmp;					\
+    						\
+  tmp = x->v32[3] + y->v32[3];                  \
+  z->v32[3] = (uint32_t) tmp;			\
+  						\
+  tmp =  x->v32[2] + y->v32[2] + (tmp >> 32);	\
+  z->v32[2] = (uint32_t) tmp;                   \
+						\
+  tmp =  x->v32[1] + y->v32[1] + (tmp >> 32);	\
+  z->v32[1] = (uint32_t) tmp;			\
+                                                \
+  tmp =  x->v32[0] + y->v32[0] + (tmp >> 32);	\
+  z->v32[0] = (uint32_t) tmp;			\
+}
+
+#else /* assume little endian architecture */
+
+#define _v128_add(z, x, y) {                    \
+  uint64_t tmp;					\
+						\
+  tmp = htonl(x->v32[3]) + htonl(y->v32[3]);	\
+  z->v32[3] = ntohl((uint32_t) tmp);		\
+  						\
+  tmp =  htonl(x->v32[2]) + htonl(y->v32[2])	\
+       + htonl(tmp >> 32);			\
+  z->v32[2] = ntohl((uint32_t) tmp);		\
+                                                \
+  tmp =  htonl(x->v32[1]) + htonl(y->v32[1])	\
+       + htonl(tmp >> 32);			\
+  z->v32[1] = ntohl((uint32_t) tmp);		\
+  						\
+  tmp =  htonl(x->v32[0]) + htonl(y->v32[0])	\
+       + htonl(tmp >> 32);			\
+  z->v32[0] = ntohl((uint32_t) tmp);		\
+}
+						
+#endif /* WORDS_BIGENDIAN */                      
+#endif
+
+#ifdef DATATYPES_USE_MACROS  /* little functions are really macros */
+
+#define v128_set_to_zero(z)       _v128_set_to_zero(z)
+#define v128_copy(z, x)           _v128_copy(z, x)
+#define v128_xor(z, x, y)         _v128_xor(z, x, y)
+#define v128_and(z, x, y)         _v128_and(z, x, y)
+#define v128_or(z, x, y)          _v128_or(z, x, y)
+#define v128_complement(x)        _v128_complement(x) 
+#define v128_is_eq(x, y)          _v128_is_eq(x, y)
+#define v128_xor_eq(x, y)         _v128_xor_eq(x, y)
+#define v128_get_bit(x, i)        _v128_get_bit(x, i)
+#define v128_set_bit(x, i)        _v128_set_bit(x, i)
+#define v128_clear_bit(x, i)      _v128_clear_bit(x, i)
+#define v128_set_bit_to(x, i, y)  _v128_set_bit_to(x, i, y)
+
+#else
+
+void
+v128_set_to_zero(v128_t *x);
+
+int
+v128_is_eq(const v128_t *x, const v128_t *y);
+
+void
+v128_copy(v128_t *x, const v128_t *y);
+
+void
+v128_xor(v128_t *z, v128_t *x, v128_t *y);
+
+void
+v128_and(v128_t *z, v128_t *x, v128_t *y);
+
+void
+v128_or(v128_t *z, v128_t *x, v128_t *y); 
+
+void
+v128_complement(v128_t *x);
+
+int
+v128_get_bit(const v128_t *x, int i);
+
+void
+v128_set_bit(v128_t *x, int i) ;     
+
+void
+v128_clear_bit(v128_t *x, int i);    
+
+void
+v128_set_bit_to(v128_t *x, int i, int y);
+
+#endif /* DATATYPES_USE_MACROS */
+
+/*
+ * octet_string_is_eq(a,b, len) returns 1 if the length len strings a
+ * and b are not equal, returns 0 otherwise
+ */
+
+int
+octet_string_is_eq(uint8_t *a, uint8_t *b, int len);
+
+void
+octet_string_set_to_zero(uint8_t *s, int len);
+
+
+#endif /* MATH_H */
+
+
+
diff --git a/crypto/include/crypto_types.h b/crypto/include/crypto_types.h
new file mode 100644
index 0000000..0ce50f4
--- /dev/null
+++ b/crypto/include/crypto_types.h
@@ -0,0 +1,206 @@
+/*
+ * crypto_types.h
+ *
+ * constants for cipher types and auth func types
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright(c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef CRYPTO_TYPES_H
+#define CRYPTO_TYPES_H
+
+/**
+ * @defgroup Algos Cryptographic Algorithms
+ *
+ *
+ * This library provides several different cryptographic algorithms,
+ * each of which can be selected by using the cipher_type_id_t and
+ * auth_type_id_t.  These algorithms are documented below.
+ *
+ * Authentication functions that use the Universal Security Transform
+ * (UST) must be used in conjunction with a cipher other than the null
+ * cipher.  These functions require a per-message pseudorandom input
+ * that is generated by the cipher.
+ * 
+ * The identifiers STRONGHOLD_AUTH and STRONGHOLD_CIPHER identify the
+ * strongest available authentication function and cipher,
+ * respectively.  They are resolved at compile time to the strongest
+ * available algorithm.  The stronghold algorithms can serve as did
+ * the keep of a medieval fortification; they provide the strongest
+ * defense (or the last refuge).
+ * 
+ * @{
+ */
+
+/**
+ * @defgroup Ciphers Cipher Types
+ *
+ * @brief    Each cipher type is identified by an unsigned integer.  The
+ *           cipher types available in this edition of libSRTP are given 
+ *           by the #defines below.
+ *
+ * A cipher_type_id_t is an identifier for a cipher_type; only values
+ * given by the #defines above (or those present in the file
+ * crypto_types.h) should be used.
+ *
+ * The identifier STRONGHOLD_CIPHER indicates the strongest available
+ * cipher, allowing an application to choose the strongest available
+ * algorithm without any advance knowledge about the avaliable
+ * algorithms.
+ *
+ * @{
+ */
+
+/**
+ * @brief The null cipher performs no encryption.
+ *
+ * The NULL_CIPHER leaves its inputs unaltered, during both the 
+ * encryption and decryption operations.  This cipher can be chosen
+ * to indicate that no encryption is to be performed.
+ */
+#define NULL_CIPHER        0            
+
+/** 
+ * @brief AES-128 Integer Counter Mode (AES ICM)             
+ *
+ * AES-128 ICM is the variant of counter mode that is used by Secure RTP.  
+ * This cipher uses a 16-octet key and a 30-octet offset (or salt) value.
+ */
+#define AES_128_ICM        1            
+
+/**
+ * @brief SEAL 3.0 
+ * 
+ * SEAL is the Software-Optimized Encryption Algorithm of Coppersmith
+ * and Rogaway.  Nota bene: this cipher is IBM proprietary.
+ */
+#define SEAL               2            
+
+/** 
+ * @brief AES-128 Integer Counter Mode (AES ICM)             
+ *
+ * AES-128 ICM is the variant of counter mode that is used by Secure RTP.  
+ * This cipher uses a 16-octet key and a 30-octet offset (or salt) value.
+ */
+#define AES_128_CBC        3            
+
+/**
+ * @brief Strongest available cipher.
+ *
+ * This identifier resolves to the strongest cipher type available.
+ */
+#define STRONGHOLD_CIPHER  AES_128_ICM  
+
+/**
+ * @}
+ */
+
+
+
+/**
+ * @defgroup Authentication Authentication Function Types
+ * 
+ * @brief Each authentication function type is identified by an
+ * unsigned integer.  The authentication function types available in
+ * this edition of libSRTP are given by the #defines below.
+ *
+ * An auth_type_id_t is an identifier for an authentication function type;
+ * only values given by the #defines above (or those present in the 
+ * file crypto_types.h) should be used.  
+ *
+ * The identifier STRONGHOLD_AUTH indicates the strongest available
+ * authentication function, allowing an application to choose the
+ * strongest available algorithm without any advance knowledge about
+ * the avaliable algorithms.  The stronghold algorithms can serve as
+ * did the keep of a medieval fortification; they provide the
+ * strongest defense (or the last refuge).
+ *
+ * @{
+ */
+
+/**
+ * @brief The null authentication function performs no authentication.
+ *
+ * The NULL_AUTH function does nothing, and can be selected to indicate
+ * that authentication should not be performed.
+ */ 
+#define NULL_AUTH          0           
+
+/**
+ * @brief UST with TMMH Version 2
+ *
+ * UST_TMMHv2 implements the Truncated Multi-Modular Hash using
+ * UST.  This function must be used in conjunction with a cipher other
+ * than the null cipher.
+ * with a cipher.
+ */
+#define UST_TMMHv2         1           
+
+/**
+ * @brief (UST) AES-128 XORMAC  
+ *
+ * UST_AES_128_XMAC implements AES-128 XORMAC, using UST. Nota bene:
+ * the XORMAC algorithm is IBM proprietary.
+ */
+#define UST_AES_128_XMAC   2           
+
+/**
+ * @brief HMAC-SHA1
+ *
+ * HMAC_SHA1 implements the Hash-based MAC using the NIST Secure
+ * Hash Algorithm version 1 (SHA1).
+ */
+#define HMAC_SHA1          3          
+
+/**
+ * @brief Strongest available authentication function.
+ *
+ * This identifier resolves to the strongest available authentication
+ * function.
+ */
+#define STRONGHOLD_AUTH    HMAC_SHA1   
+
+/**
+ * @}
+ */
+/**
+ * @}
+ */
+
+#endif  /* CRYPTO_TYPES_H */
diff --git a/crypto/include/cryptoalg.h b/crypto/include/cryptoalg.h
new file mode 100644
index 0000000..d9f0441
--- /dev/null
+++ b/crypto/include/cryptoalg.h
@@ -0,0 +1,133 @@
+/*
+ * cryptoalg.h
+ *
+ * API for authenticated encryption crypto algorithms
+ * 
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef CRYPTOALG_H
+#define CRYPTOALG_H
+
+#include "err.h"
+
+/**
+ * @defgroup Crypto Cryptography
+ *
+ * Zed uses a simple interface to a cryptographic transform.
+ *
+ * @{
+ */
+
+/**
+ * @brief applies a crypto algorithm
+ *
+ * The function pointer cryptoalg_func_t points to a function that
+ * implements a crypto transform, and provides a uniform API for
+ * accessing crypto mechanisms.
+ * 
+ * @param key       location of secret key                  
+ *
+ * @param clear     data to be authenticated but not encrypted           
+ *
+ * @param clear_len length of data to be authenticated but not encrypted
+ *
+ * @param iv        location to write the Initialization Vector (IV)
+ *
+ * @param protect   location of the data to be encrypted and
+ * authenticated (before the function call), and the ciphertext
+ * and authentication tag (after the call)
+ *
+ * @param protected_len location of the length of the data to be
+ * encrypted and authenticated (before the function call), and the
+ * length of the ciphertext (after the call)
+ *
+ */
+                    
+typedef err_status_t (*cryptoalg_func_t) 
+     (void *key,            
+      const void *clear,          
+      unsigned clear_len,   
+      void *iv,             
+      void *protect,         
+      unsigned *protected_len);
+
+typedef 
+err_status_t (*cryptoalg_inv_t)
+     (void *key,            /* location of secret key                  */
+      const void *clear,     /* data to be authenticated only           */
+      unsigned clear_len,   /* length of data to be authenticated only */
+      void *iv,             /* location of iv                          */
+      void *opaque,         /* data to be decrypted and authenticated  */
+      unsigned *opaque_len  /* location of the length of data to be
+			     * decrypted and authd (before and after) 
+			     */
+      );
+
+typedef struct cryptoalg_ctx_t {
+  cryptoalg_func_t enc;
+  cryptoalg_inv_t  dec;
+  unsigned key_len;
+  unsigned iv_len;
+  unsigned auth_tag_len;
+  unsigned max_expansion; 
+} cryptoalg_ctx_t;
+
+typedef cryptoalg_ctx_t *cryptoalg_t;
+
+#define cryptoalg_get_key_len(cryptoalg) ((cryptoalg)->key_len)
+
+#define cryptoalg_get_iv_len(cryptoalg) ((cryptoalg)->iv_len)
+
+#define cryptoalg_get_auth_tag_len(cryptoalg) ((cryptoalg)->auth_tag_len)
+
+int
+cryptoalg_get_id(cryptoalg_t c);
+
+cryptoalg_t 
+cryptoalg_find_by_id(int id);
+
+
+/**
+ * @}
+ */
+
+#endif /* CRYPTOALG_H */
+
+
diff --git a/crypto/include/datatypes.h b/crypto/include/datatypes.h
new file mode 100644
index 0000000..f6ef3af
--- /dev/null
+++ b/crypto/include/datatypes.h
@@ -0,0 +1,506 @@
+/*
+ * datatypes.h
+ * 
+ * data types for bit vectors and finite fields
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef _DATATYPES_H
+#define _DATATYPES_H
+
+#include "integers.h"           /* definitions of uint32_t, et cetera   */
+#include "alloc.h"
+
+#include <stdarg.h>
+
+#ifndef SRTP_KERNEL
+# include <stdio.h>
+# include <string.h>
+# include <time.h>
+# ifdef HAVE_NETINET_IN_H
+#  include <netinet/in.h>
+# elif defined HAVE_WINSOCK2_H
+#  include <winsock2.h>
+# endif
+#endif
+
+
+/* if DATATYPES_USE_MACROS is defined, then little functions are macros */
+#define DATATYPES_USE_MACROS  
+
+typedef union {
+  uint8_t  v8[2];
+  uint16_t value;
+} v16_t;
+
+typedef union {
+  uint8_t  v8[4];
+  uint16_t v16[2];
+  uint32_t value;
+} v32_t;
+
+typedef union {
+  uint8_t  v8[8];
+  uint16_t v16[4];
+  uint32_t v32[2];
+  uint64_t value;
+} v64_t;
+
+typedef union {
+  uint8_t  v8[16];
+  uint16_t v16[8];
+  uint32_t v32[4];
+  uint64_t v64[2];
+} v128_t;
+
+
+
+/* some useful and simple math functions */
+
+#define pow_2(X) ( (unsigned int)1 << (X) )   /* 2^X     */
+
+#define pow_minus_one(X) ( (X) ? -1 : 1 )      /* (-1)^X  */
+
+
+/*
+ * octet_get_weight(x) returns the hamming weight (number of bits equal to
+ * one) in the octet x
+ */
+
+int
+octet_get_weight(uint8_t octet);
+
+char *
+octet_bit_string(uint8_t x);
+
+#define MAX_PRINT_STRING_LEN 1024
+
+char *
+octet_string_hex_string(const void *str, int length);
+
+char *
+v128_bit_string(v128_t *x);
+
+char *
+v128_hex_string(v128_t *x);
+
+uint8_t
+nibble_to_hex_char(uint8_t nibble);
+
+char *
+char_to_hex_string(char *x, int num_char);
+
+uint8_t
+hex_string_to_octet(char *s);
+
+/*
+ * hex_string_to_octet_string(raw, hex, len) converts the hexadecimal
+ * string at *hex (of length len octets) to the equivalent raw data
+ * and writes it to *raw.
+ *
+ * if a character in the hex string that is not a hexadeciaml digit
+ * (0123456789abcdefABCDEF) is encountered, the function stops writing
+ * data to *raw
+ *
+ * the number of hex digits copied (which is two times the number of
+ * octets in *raw) is returned
+ */
+
+int
+hex_string_to_octet_string(char *raw, char *hex, int len);
+
+v128_t
+hex_string_to_v128(char *s);
+
+void
+v128_copy_octet_string(v128_t *x, const uint8_t s[16]);
+
+void
+v128_left_shift(v128_t *x, int index);
+
+void
+v128_right_shift(v128_t *x, int index);
+
+/*
+ * the following macros define the data manipulation functions
+ * 
+ * If DATATYPES_USE_MACROS is defined, then these macros are used
+ * directly (and function call overhead is avoided).  Otherwise,
+ * the macros are used through the functions defined in datatypes.c
+ * (and the compiler provides better warnings).
+ */
+
+#define _v128_set_to_zero(x)     \
+(                               \
+  (x)->v32[0] = 0,              \
+  (x)->v32[1] = 0,              \
+  (x)->v32[2] = 0,              \
+  (x)->v32[3] = 0               \
+)
+
+#define _v128_copy(x, y)          \
+(                                \
+  (x)->v32[0] = (y)->v32[0],     \
+  (x)->v32[1] = (y)->v32[1],     \
+  (x)->v32[2] = (y)->v32[2],     \
+  (x)->v32[3] = (y)->v32[3]      \
+)
+
+#define _v128_xor(z, x, y)                       \
+(                                               \
+   (z)->v32[0] = (x)->v32[0] ^ (y)->v32[0],     \
+   (z)->v32[1] = (x)->v32[1] ^ (y)->v32[1],     \
+   (z)->v32[2] = (x)->v32[2] ^ (y)->v32[2],     \
+   (z)->v32[3] = (x)->v32[3] ^ (y)->v32[3]      \
+)
+
+#define _v128_and(z, x, y)                       \
+(                                               \
+   (z)->v32[0] = (x)->v32[0] & (y)->v32[0],     \
+   (z)->v32[1] = (x)->v32[1] & (y)->v32[1],     \
+   (z)->v32[2] = (x)->v32[2] & (y)->v32[2],     \
+   (z)->v32[3] = (x)->v32[3] & (y)->v32[3]      \
+)
+
+#define _v128_or(z, x, y)                        \
+(                                               \
+   (z)->v32[0] = (x)->v32[0] | (y)->v32[0],     \
+   (z)->v32[1] = (x)->v32[1] | (y)->v32[1],     \
+   (z)->v32[2] = (x)->v32[2] | (y)->v32[2],     \
+   (z)->v32[3] = (x)->v32[3] | (y)->v32[3]      \
+)
+
+#define _v128_complement(x)        \
+(                                  \
+   (x)->v32[0] = ~(x)->v32[0],     \
+   (x)->v32[1] = ~(x)->v32[1],     \
+   (x)->v32[2] = ~(x)->v32[2],     \
+   (x)->v32[3] = ~(x)->v32[3]      \
+)
+
+/* ok for NO_64BIT_MATH if it can compare uint64_t's (even as structures) */
+#define _v128_is_eq(x, y)                                        \
+  (((x)->v64[0] == (y)->v64[0]) && ((x)->v64[1] == (y)->v64[1]))
+
+
+#ifdef NO_64BIT_MATH
+#define _v128_xor_eq(z, x)         \
+(                                  \
+   (z)->v32[0] ^= (x)->v32[0],     \
+   (z)->v32[1] ^= (x)->v32[1],     \
+   (z)->v32[2] ^= (x)->v32[2],     \
+   (z)->v32[3] ^= (x)->v32[3]      \
+)
+#else
+#define _v128_xor_eq(z, x)         \
+(                                  \
+   (z)->v64[0] ^= (x)->v64[0],     \
+   (z)->v64[1] ^= (x)->v64[1]      \
+)
+#endif
+
+/* NOTE!  This assumes an odd ordering! */
+/* This will not be compatible directly with math on some processors */
+/* bit 0 is first 32-bit word, low order bit. in little-endian, that's
+   the first byte of the first 32-bit word.  In big-endian, that's
+   the 3rd byte of the first 32-bit word */
+/* The get/set bit code is used by the replay code ONLY, and it doesn't
+   really care which bit is which.  AES does care which bit is which, but
+   doesn't use the 128-bit get/set or 128-bit shifts  */
+
+#define _v128_get_bit(x, bit)                     \
+(                                                 \
+  ((((x)->v32[(bit) >> 5]) >> ((bit) & 31)) & 1)  \
+)
+
+#define _v128_set_bit(x, bit)                                    \
+(                                                                \
+  (((x)->v32[(bit) >> 5]) |= ((uint32_t)1 << ((bit) & 31))) \
+)
+
+#define _v128_clear_bit(x, bit)                                   \
+(                                                                 \
+  (((x)->v32[(bit) >> 5]) &= ~((uint32_t)1 << ((bit) & 31))) \
+)
+
+#define _v128_set_bit_to(x, bit, value)   \
+(                                         \
+   (value) ? _v128_set_bit(x, bit) :      \
+             _v128_clear_bit(x, bit)      \
+)
+
+
+#if 0
+/* nothing uses this */
+#ifdef WORDS_BIGENDIAN
+
+#define _v128_add(z, x, y) {                    \
+  uint64_t tmp;					\
+    						\
+  tmp = x->v32[3] + y->v32[3];                  \
+  z->v32[3] = (uint32_t) tmp;			\
+  						\
+  tmp =  x->v32[2] + y->v32[2] + (tmp >> 32);	\
+  z->v32[2] = (uint32_t) tmp;                   \
+						\
+  tmp =  x->v32[1] + y->v32[1] + (tmp >> 32);	\
+  z->v32[1] = (uint32_t) tmp;			\
+                                                \
+  tmp =  x->v32[0] + y->v32[0] + (tmp >> 32);	\
+  z->v32[0] = (uint32_t) tmp;			\
+}
+
+#else /* assume little endian architecture */
+
+#define _v128_add(z, x, y) {                    \
+  uint64_t tmp;					\
+						\
+  tmp = htonl(x->v32[3]) + htonl(y->v32[3]);	\
+  z->v32[3] = ntohl((uint32_t) tmp);		\
+  						\
+  tmp =  htonl(x->v32[2]) + htonl(y->v32[2])	\
+       + htonl(tmp >> 32);			\
+  z->v32[2] = ntohl((uint32_t) tmp);		\
+                                                \
+  tmp =  htonl(x->v32[1]) + htonl(y->v32[1])	\
+       + htonl(tmp >> 32);			\
+  z->v32[1] = ntohl((uint32_t) tmp);		\
+  						\
+  tmp =  htonl(x->v32[0]) + htonl(y->v32[0])	\
+       + htonl(tmp >> 32);			\
+  z->v32[0] = ntohl((uint32_t) tmp);		\
+}
+#endif /* WORDS_BIGENDIAN */                      
+#endif /* 0 */
+
+
+#ifdef DATATYPES_USE_MACROS  /* little functions are really macros */
+   
+#define v128_set_to_zero(z)       _v128_set_to_zero(z)
+#define v128_copy(z, x)           _v128_copy(z, x)
+#define v128_xor(z, x, y)         _v128_xor(z, x, y)
+#define v128_and(z, x, y)         _v128_and(z, x, y)
+#define v128_or(z, x, y)          _v128_or(z, x, y)
+#define v128_complement(x)        _v128_complement(x) 
+#define v128_is_eq(x, y)          _v128_is_eq(x, y)
+#define v128_xor_eq(x, y)         _v128_xor_eq(x, y)
+#define v128_get_bit(x, i)        _v128_get_bit(x, i)
+#define v128_set_bit(x, i)        _v128_set_bit(x, i)
+#define v128_clear_bit(x, i)      _v128_clear_bit(x, i)
+#define v128_set_bit_to(x, i, y)  _v128_set_bit_to(x, i, y)
+
+#else
+
+void
+v128_set_to_zero(v128_t *x);
+
+int
+v128_is_eq(const v128_t *x, const v128_t *y);
+
+void
+v128_copy(v128_t *x, const v128_t *y);
+
+void
+v128_xor(v128_t *z, v128_t *x, v128_t *y);
+
+void
+v128_and(v128_t *z, v128_t *x, v128_t *y);
+
+void
+v128_or(v128_t *z, v128_t *x, v128_t *y); 
+
+void
+v128_complement(v128_t *x);
+
+int
+v128_get_bit(const v128_t *x, int i);
+
+void
+v128_set_bit(v128_t *x, int i) ;     
+
+void
+v128_clear_bit(v128_t *x, int i);    
+
+void
+v128_set_bit_to(v128_t *x, int i, int y);
+
+#endif /* DATATYPES_USE_MACROS */
+
+/*
+ * octet_string_is_eq(a,b, len) returns 1 if the length len strings a
+ * and b are not equal, returns 0 otherwise
+ */
+
+int
+octet_string_is_eq(uint8_t *a, uint8_t *b, int len);
+
+void
+octet_string_set_to_zero(uint8_t *s, int len);
+
+
+#ifndef SRTP_KERNEL_LINUX
+
+/* 
+ * Convert big endian integers to CPU byte order.
+ */
+#ifdef WORDS_BIGENDIAN
+/* Nothing to do. */
+# define be32_to_cpu(x)	(x)
+# define be64_to_cpu(x)	(x)
+#elif defined(HAVE_BYTESWAP_H)
+/* We have (hopefully) optimized versions in byteswap.h */
+# include <byteswap.h>
+# define be32_to_cpu(x)	bswap_32((x))
+# define be64_to_cpu(x)	bswap_64((x))
+#else
+
+#if defined(__GNUC__) && defined(HAVE_X86)
+/* Fall back. */
+static inline uint32_t be32_to_cpu(uint32_t v) {
+   /* optimized for x86. */
+   asm("bswap %0" : "=r" (v) : "0" (v));
+   return v;
+}
+# else /* HAVE_X86 */
+#  ifdef HAVE_NETINET_IN_H
+#   include <netinet/in.h>
+#  elif defined HAVE_WINSOCK2_H
+#   include <winsock2.h>
+#  endif
+#  define be32_to_cpu(x)	ntohl((x))
+# endif /* HAVE_X86 */
+
+static inline uint64_t be64_to_cpu(uint64_t v) {
+# ifdef NO_64BIT_MATH
+   /* use the make64 functions to do 64-bit math */
+   v = make64(htonl(low32(v)),htonl(high32(v)));
+# else
+   /* use the native 64-bit math */
+   v= (uint64_t)((be32_to_cpu((uint32_t)(v >> 32))) | (((uint64_t)be32_to_cpu((uint32_t)v)) << 32));
+# endif
+   return v;
+}
+
+#endif /* ! SRTP_KERNEL_LINUX */
+
+#endif /* WORDS_BIGENDIAN */
+
+/*
+ * functions manipulating bitvector_t 
+ *
+ * A bitvector_t consists of an array of words and an integer
+ * representing the number of significant bits stored in the array.
+ * The bits are packed as follows: the least significant bit is that
+ * of word[0], while the most significant bit is the nth most
+ * significant bit of word[m], where length = bits_per_word * m + n.
+ * 
+ */
+
+#define bits_per_word  32
+#define bytes_per_word 4
+
+typedef struct {
+  uint32_t length;   
+  uint32_t *word;
+} bitvector_t;
+
+
+#define _bitvector_get_bit(v, bit_index)				\
+(									\
+ ((((v)->word[((bit_index) >> 5)]) >> ((bit_index) & 31)) & 1)		\
+)
+
+
+#define _bitvector_set_bit(v, bit_index)				\
+(									\
+ (((v)->word[((bit_index) >> 5)] |= ((uint32_t)1 << ((bit_index) & 31)))) \
+)
+
+#define _bitvector_clear_bit(v, bit_index)				\
+(									\
+ (((v)->word[((bit_index) >> 5)] &= ~((uint32_t)1 << ((bit_index) & 31)))) \
+)
+
+#define _bitvector_get_length(v)					\
+(									\
+ ((v)->length)								\
+)
+
+#ifdef DATATYPES_USE_MACROS  /* little functions are really macros */
+
+#define bitvector_get_bit(v, bit_index) _bitvector_get_bit(v, bit_index)
+#define bitvector_set_bit(v, bit_index) _bitvector_set_bit(v, bit_index)
+#define bitvector_clear_bit(v, bit_index) _bitvector_clear_bit(v, bit_index)
+#define bitvector_get_length(v) _bitvector_get_length(v)
+
+#else
+
+int
+bitvector_get_bit(const bitvector_t *v, int bit_index);
+
+void
+bitvector_set_bit(bitvector_t *v, int bit_index);
+
+void
+bitvector_clear_bit(bitvector_t *v, int bit_index);
+
+unsigned long
+bitvector_get_length(const bitvector_t *v);
+
+#endif
+
+int
+bitvector_alloc(bitvector_t *v, unsigned long length);
+
+void
+bitvector_dealloc(bitvector_t *v);
+
+void
+bitvector_set_to_zero(bitvector_t *x);
+
+void
+bitvector_left_shift(bitvector_t *x, int index);
+
+char *
+bitvector_bit_string(bitvector_t *x, char* buf, int len);
+
+#endif /* _DATATYPES_H */
diff --git a/crypto/include/err.h b/crypto/include/err.h
new file mode 100644
index 0000000..1a6e170
--- /dev/null
+++ b/crypto/include/err.h
@@ -0,0 +1,174 @@
+/*
+ * err.h
+ * 
+ * error status codes
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef ERR_H
+#define ERR_H
+
+#include "datatypes.h"
+
+/**
+ * @defgroup Error Error Codes
+ * 
+ * Error status codes are represented by the enumeration err_status_t.
+ * 
+ * @{
+ */
+
+
+/*
+ * @brief err_status_t defines error codes.
+ *
+ * The enumeration err_status_t defines error codes.  Note that the
+ * value of err_status_ok is equal to zero, which can simplify error
+ * checking somewhat.
+ *
+ */
+typedef enum {
+  err_status_ok           = 0,  /**< nothing to report                       */
+  err_status_fail         = 1,  /**< unspecified failure                     */
+  err_status_bad_param    = 2,  /**< unsupported parameter                   */
+  err_status_alloc_fail   = 3,  /**< couldn't allocate memory                */
+  err_status_dealloc_fail = 4,  /**< couldn't deallocate properly            */
+  err_status_init_fail    = 5,  /**< couldn't initialize                     */
+  err_status_terminus     = 6,  /**< can't process as much data as requested */
+  err_status_auth_fail    = 7,  /**< authentication failure                  */
+  err_status_cipher_fail  = 8,  /**< cipher failure                          */
+  err_status_replay_fail  = 9,  /**< replay check failed (bad index)         */
+  err_status_replay_old   = 10, /**< replay check failed (index too old)     */
+  err_status_algo_fail    = 11, /**< algorithm failed test routine           */
+  err_status_no_such_op   = 12, /**< unsupported operation                   */
+  err_status_no_ctx       = 13, /**< no appropriate context found            */
+  err_status_cant_check   = 14, /**< unable to perform desired validation    */
+  err_status_key_expired  = 15, /**< can't use key any more                  */
+  err_status_socket_err   = 16, /**< error in use of socket                  */
+  err_status_signal_err   = 17, /**< error in use POSIX signals              */
+  err_status_nonce_bad    = 18, /**< nonce check failed                      */
+  err_status_read_fail    = 19, /**< couldn't read data                      */
+  err_status_write_fail   = 20, /**< couldn't write data                     */
+  err_status_parse_err    = 21, /**< error pasring data                      */
+  err_status_encode_err   = 22, /**< error encoding data                     */
+  err_status_semaphore_err = 23,/**< error while using semaphores            */
+  err_status_pfkey_err    = 24  /**< error while using pfkey                 */
+} err_status_t;
+
+/**
+ * @}
+ */
+
+typedef enum {
+  err_level_emergency = 0,
+  err_level_alert,
+  err_level_critical,
+  err_level_error,
+  err_level_warning,
+  err_level_notice,
+  err_level_info,
+  err_level_debug,
+  err_level_none
+} err_reporting_level_t;
+
+/*
+ * err_reporting_init prepares the error system.  If
+ * ERR_REPORTING_SYSLOG is defined, it will open syslog.
+ *
+ * The ident argument is a string that will be prepended to
+ * all syslog messages.  It is conventionally argv[0].
+ */
+
+err_status_t
+err_reporting_init(char *ident);
+
+#ifdef SRTP_KERNEL_LINUX
+extern err_reporting_level_t err_level;
+#else
+
+/*
+ * keydaemon_report_error reports a 'printf' formatted error
+ * string, followed by a an arg list.  The priority argument
+ * is equivalent to that defined for syslog.
+ *
+ * Errors will be reported to ERR_REPORTING_FILE, if defined, and to
+ * syslog, if ERR_REPORTING_SYSLOG is defined.
+ *
+ */
+
+void
+err_report(int priority, char *format, ...);
+#endif /* ! SRTP_KERNEL_LINUX */
+
+
+/*
+ * debug_module_t defines a debug module
+ */
+
+typedef struct {
+  int   on;          /* 1 if debugging is on, 0 if it is off */
+  char *name;        /* printable name for debug module      */
+} debug_module_t;
+
+#ifdef ENABLE_DEBUGGING
+
+#define debug_on(mod)  (mod).on = 1
+
+#define debug_off(mod) (mod).on = 0
+
+/* use err_report() to report debug message */
+#define debug_print(mod, format, arg)                  \
+  if (mod.on) err_report(err_level_debug, ("%s: " format "\n"), mod.name, arg)
+#define debug_print2(mod, format, arg1,arg2)                  \
+  if (mod.on) err_report(err_level_debug, ("%s: " format "\n"), mod.name, arg1,arg2)
+
+#else
+
+/* define macros to do nothing */
+#define debug_print(mod, format, arg)
+
+#define debug_on(mod)
+
+#define debug_off(mod)
+
+#endif
+
+#endif /* ERR_H */
diff --git a/crypto/include/gf2_8.h b/crypto/include/gf2_8.h
new file mode 100644
index 0000000..098d37c
--- /dev/null
+++ b/crypto/include/gf2_8.h
@@ -0,0 +1,79 @@
+/*
+ * gf2_8.h
+ *
+ * GF(256) implementation
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef GF2_8_H
+#define GF2_8_H
+
+#include "datatypes.h"  /* for uint8_t definition */
+
+typedef uint8_t gf2_8;
+
+#define gf2_8_field_polynomial 0x1B
+
+/*
+ * gf2_8_shift(x) returns 
+ */
+
+/*
+ * gf2_8_shift(z) returns the result of the GF(2^8) 'multiply by x' 
+ * operation, using the field representation from AES; that is, the 
+ * next gf2_8 value in the cyclic representation of that field.  The 
+ * value z should be an uint8_t.
+ */
+
+#define gf2_8_shift(z) (((z) & 128) ? \
+       (((z) << 1) ^ gf2_8_field_polynomial) : ((z) << 1))
+
+gf2_8
+gf2_8_compute_inverse(gf2_8 x);
+
+void
+test_gf2_8(void);
+
+gf2_8
+gf2_8_multiply(gf2_8 x, gf2_8 y);
+
+#endif /* GF2_8_H */
diff --git a/crypto/include/hmac.h b/crypto/include/hmac.h
new file mode 100644
index 0000000..262c0e2
--- /dev/null
+++ b/crypto/include/hmac.h
@@ -0,0 +1,78 @@
+/*
+ * hmac.h
+ *
+ * interface to hmac auth_type_t
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ *
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef HMAC_H
+#define HMAC_H
+
+#include "auth.h"
+#include "sha1.h"
+
+typedef struct {
+  uint8_t    opad[64];
+  sha1_ctx_t ctx;
+  sha1_ctx_t init_ctx;
+} hmac_ctx_t;
+
+err_status_t
+hmac_alloc(auth_t **a, int key_len, int out_len);
+
+err_status_t
+hmac_dealloc(auth_t *a);
+
+err_status_t
+hmac_init(hmac_ctx_t *state, const uint8_t *key, int key_len);
+
+err_status_t
+hmac_start(hmac_ctx_t *state);
+
+err_status_t
+hmac_update(hmac_ctx_t *state, const uint8_t *message, int msg_octets);
+
+err_status_t
+hmac_compute(hmac_ctx_t *state, const void *message,
+	     int msg_octets, int tag_len, uint8_t *result);
+
+
+#endif /* HMAC_H */
diff --git a/crypto/include/integers.h b/crypto/include/integers.h
new file mode 100644
index 0000000..3515d13
--- /dev/null
+++ b/crypto/include/integers.h
@@ -0,0 +1,146 @@
+/*
+ * integers.h
+ *
+ * defines integer types (or refers to their definitions)
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef INTEGERS_H
+#define INTEGERS_H
+
+#include "config.h"	/* configuration file, using autoconf          */
+
+#ifdef SRTP_KERNEL
+
+#include "kernel_compat.h"
+
+#else /* SRTP_KERNEL */
+
+/* use standard integer definitions, if they're available  */
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_INT_TYPES_H
+# include <sys/int_types.h>    /* this exists on Sun OS */
+#endif
+#ifdef HAVE_MACHINE_TYPES_H
+# include <machine/types.h>
+#endif
+
+/* Can we do 64 bit integers? */
+#ifndef HAVE_UINT64_T
+# if SIZEOF_UNSIGNED_LONG == 8
+typedef unsigned long		uint64_t;
+# elif SIZEOF_UNSIGNED_LONG_LONG == 8
+typedef unsigned long long	uint64_t;
+# else
+#  define NO_64BIT_MATH 1
+# endif
+#endif
+
+/* Reasonable defaults for 32 bit machines - you may need to
+ * edit these definitions for your own machine. */
+#ifndef HAVE_UINT8_T
+typedef unsigned char		uint8_t;
+#endif
+#ifndef HAVE_UINT16_T
+typedef unsigned short int	uint16_t;
+#endif
+#ifndef HAVE_UINT32_T
+typedef unsigned int		uint32_t;
+#endif
+
+#ifdef NO_64BIT_MATH
+typedef double uint64_t;
+/* assert that sizeof(double) == 8 */
+extern uint64_t make64(uint32_t high, uint32_t low);
+extern uint32_t high32(uint64_t value);
+extern uint32_t low32(uint64_t value);
+#endif
+
+#endif /* SRTP_KERNEL */
+
+/* These macros are to load and store 32-bit values from un-aligned
+   addresses.  This is required for processors that do not allow unaligned
+   loads. */
+#ifdef ALIGNMENT_32BIT_REQUIRED
+/* Note that if it's in a variable, you can memcpy it */
+#ifdef WORDS_BIGENDIAN
+#define PUT_32(addr,value) \
+    { \
+        ((unsigned char *) (addr))[0] = (value >> 24); \
+        ((unsigned char *) (addr))[1] = (value >> 16) & 0xff; \
+        ((unsigned char *) (addr))[2] = (value >> 8) & 0xff; \
+        ((unsigned char *) (addr))[3] = (value)      & 0xff; \
+    }
+#define GET_32(addr) ((((unsigned char *) (addr))[0] << 24) |  \
+                      (((unsigned char *) (addr))[1] << 16) |  \
+                      (((unsigned char *) (addr))[2] << 8)  |  \
+                      (((unsigned char *) (addr))[3])) 
+#else
+#define PUT_32(addr,value) \
+    { \
+        ((unsigned char *) (addr))[3] = (value >> 24); \
+        ((unsigned char *) (addr))[2] = (value >> 16) & 0xff; \
+        ((unsigned char *) (addr))[1] = (value >> 8) & 0xff; \
+        ((unsigned char *) (addr))[0] = (value)      & 0xff; \
+    }
+#define GET_32(addr) ((((unsigned char *) (addr))[3] << 24) |  \
+                      (((unsigned char *) (addr))[2] << 16) |  \
+                      (((unsigned char *) (addr))[1] << 8)  |  \
+                      (((unsigned char *) (addr))[0])) 
+#endif // WORDS_BIGENDIAN
+#else
+#define PUT_32(addr,value) *(((uint32_t *) (addr)) = (value)
+#define GET_32(addr) (*(((uint32_t *) (addr)))
+#endif
+
+#endif /* INTEGERS_H */
diff --git a/crypto/include/kernel_compat.h b/crypto/include/kernel_compat.h
new file mode 100644
index 0000000..59d1898
--- /dev/null
+++ b/crypto/include/kernel_compat.h
@@ -0,0 +1,84 @@
+/*
+ * kernel_compat.h
+ * 
+ * Compatibility stuff for building in kernel context where standard
+ * C headers and library are not available.
+ *
+ * Marcus Sundberg
+ * Ingate Systems AB
+ */
+/*
+ *	
+ * Copyright(c) 2005 Ingate Systems AB
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the author(s) nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef KERNEL_COMPAT_H
+#define KERNEL_COMPAT_H
+
+#ifdef SRTP_KERNEL_LINUX
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/random.h>
+#include <linux/byteorder/generic.h>
+
+
+#define err_report(priority, ...) \
+  do {\
+    if (priority <= err_level) {\
+       printk(__VA_ARGS__);\
+    }\
+  }while(0)
+
+#define clock()	(jiffies)
+#define time(x)	(jiffies)
+
+/* rand() implementation. */
+#define RAND_MAX	32767
+
+static inline int rand(void)
+{
+	uint32_t temp;
+	get_random_bytes(&temp, sizeof(temp));
+	return temp % (RAND_MAX+1);
+}
+
+/* stdio/stdlib implementation. */
+#define printf(...)	printk(__VA_ARGS__)
+#define exit(n)	panic("%s:%d: exit(%d)\n", __FILE__, __LINE__, (n))
+
+#endif /* SRTP_KERNEL_LINUX */
+
+#endif /* KERNEL_COMPAT_H */
diff --git a/crypto/include/key.h b/crypto/include/key.h
new file mode 100644
index 0000000..e7e0744
--- /dev/null
+++ b/crypto/include/key.h
@@ -0,0 +1,82 @@
+/*
+ * key.h
+ *
+ * key usage limits enforcement
+ * 
+ * David A. Mcgrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef KEY_H
+#define KEY_H
+
+#include "rdbx.h"   /* for xtd_seq_num_t */
+#include "err.h"
+
+typedef struct key_limit_ctx_t *key_limit_t;
+
+typedef enum {
+   key_event_normal,
+   key_event_soft_limit,
+   key_event_hard_limit
+} key_event_t;
+
+err_status_t
+key_limit_set(key_limit_t key, const xtd_seq_num_t s);
+
+err_status_t
+key_limit_clone(key_limit_t original, key_limit_t *new_key);
+
+err_status_t
+key_limit_check(const key_limit_t key);
+
+key_event_t
+key_limit_update(key_limit_t key);
+
+typedef enum { 
+   key_state_normal,
+   key_state_past_soft_limit,
+   key_state_expired
+} key_state_t;
+
+typedef struct key_limit_ctx_t {
+  xtd_seq_num_t num_left;
+  key_state_t   state;
+} key_limit_ctx_t;
+
+#endif /* KEY_H */
diff --git a/crypto/include/null_auth.h b/crypto/include/null_auth.h
new file mode 100644
index 0000000..44f9a4a
--- /dev/null
+++ b/crypto/include/null_auth.h
@@ -0,0 +1,68 @@
+/*
+ * null-auth.h
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ *
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef NULL_AUTH_H
+#define NULL_AUTH_H
+
+#include "auth.h"
+
+typedef struct {
+	char foo;
+} null_auth_ctx_t;
+
+err_status_t
+null_auth_alloc(auth_t **a, int key_len, int out_len);
+
+err_status_t
+null_auth_dealloc(auth_t *a);
+
+err_status_t
+null_auth_init(null_auth_ctx_t *state, const uint8_t *key, int key_len);
+
+err_status_t
+null_auth_compute (null_auth_ctx_t *state, uint8_t *message,
+		   int msg_octets, int tag_len, uint8_t *result);
+
+
+#endif /* NULL_AUTH_H */
diff --git a/crypto/include/null_cipher.h b/crypto/include/null_cipher.h
new file mode 100644
index 0000000..7d6bbdd
--- /dev/null
+++ b/crypto/include/null_cipher.h
@@ -0,0 +1,80 @@
+/*
+ * null-cipher.h
+ *
+ * header file for the null cipher
+ *
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef NULL_CIPHER_H
+#define NULL_CIPHER_H
+
+#include "datatypes.h"
+#include "cipher.h"
+
+typedef struct {
+  char foo ;/* empty, for now */
+} null_cipher_ctx_t;
+
+
+/*
+ * none of these functions do anything (though future versions may keep
+ * track of bytes encrypted, number of instances, and/or other info).
+ */
+
+err_status_t
+null_cipher_init(null_cipher_ctx_t *c, const uint8_t *key);
+
+err_status_t
+null_cipher_set_segment(null_cipher_ctx_t *c,
+			unsigned long index);
+
+err_status_t
+null_cipher_encrypt(null_cipher_ctx_t *c,
+		    unsigned char *buf, unsigned int *bytes_to_encr);
+
+
+err_status_t
+null_cipher_encrypt_aligned(null_cipher_ctx_t *c,
+			    unsigned char *buf, int bytes_to_encr);
+
+#endif /* NULL_CIPHER_H */
diff --git a/crypto/include/prng.h b/crypto/include/prng.h
new file mode 100644
index 0000000..fb96b5e
--- /dev/null
+++ b/crypto/include/prng.h
@@ -0,0 +1,54 @@
+/*
+ * prng.h
+ *
+ * pseudorandom source
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+#ifndef PRNG_H
+#define PRNG_H
+
+#include "rand_source.h"  /* for rand_source_func_t definition       */
+#include "aes.h"          /* for aes                                 */
+#include "aes_icm.h"      /* for aes ctr                             */
+
+#define MAX_PRNG_OUT_LEN 0xffffffffU
+
+/*
+ * x917_prng is an ANSI X9.17-like AES-based PRNG
+ */
+
+typedef struct {
+  v128_t   state;          /* state data                              */
+  aes_expanded_key_t key;  /* secret key                              */
+  uint32_t octet_count;    /* number of octets output since last init */
+  rand_source_func_t rand; /* random source for re-initialization     */
+} x917_prng_t;
+
+err_status_t
+x917_prng_init(rand_source_func_t random_source);
+
+err_status_t
+x917_prng_get_octet_string(uint8_t *dest, uint32_t len);
+
+
+/*
+ * ctr_prng is an AES-CTR based PRNG
+ */
+
+typedef struct {
+  uint32_t octet_count;    /* number of octets output since last init */
+  aes_icm_ctx_t   state;   /* state data                              */
+  rand_source_func_t rand; /* random source for re-initialization     */
+} ctr_prng_t;
+
+err_status_t
+ctr_prng_init(rand_source_func_t random_source);
+
+err_status_t
+ctr_prng_get_octet_string(void *dest, uint32_t len);
+
+
+#endif
diff --git a/crypto/include/rand_source.h b/crypto/include/rand_source.h
new file mode 100644
index 0000000..b4c2110
--- /dev/null
+++ b/crypto/include/rand_source.h
@@ -0,0 +1,91 @@
+/*
+ * rand_source.h
+ *
+ * implements a random source based on /dev/random
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright(c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef RAND_SOURCE
+#define RAND_SOURCE
+
+#include "err.h"
+#include "datatypes.h"
+
+err_status_t
+rand_source_init(void);
+
+/*
+ * rand_source_get_octet_string() writes a random octet string.
+ *
+ * The function call rand_source_get_octet_string(dest, len) writes
+ * len octets of random data to the location to which dest points,
+ * and returns an error code.  This error code should be checked,
+ * and if a failure is reported, the data in the buffer MUST NOT
+ * be used.
+ * 
+ * warning: If the return code is not checked, then non-random
+ *          data may inadvertently be used.
+ *
+ * returns:
+ *     - err_status_ok    if no problems occured.
+ *     - [other]          a problem occured, and no assumptions should
+ *                        be made about the contents of the destination
+ *                        buffer.
+ */
+
+err_status_t
+rand_source_get_octet_string(void *dest, uint32_t length);
+
+err_status_t
+rand_source_deinit(void);
+
+/* 
+ * function prototype for a random source function
+ *
+ * A rand_source_func_t writes num_octets at the location indicated by
+ * dest and returns err_status_ok.  Any other return value indicates
+ * failure.
+ */
+
+typedef err_status_t (*rand_source_func_t)
+     (void *dest, uint32_t num_octets);
+
+#endif /* RAND_SOURCE */
diff --git a/crypto/include/rdb.h b/crypto/include/rdb.h
new file mode 100644
index 0000000..5a26c5e
--- /dev/null
+++ b/crypto/include/rdb.h
@@ -0,0 +1,94 @@
+/*
+ * replay-database.h
+ *
+ * interface for a replay database for packet security
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+
+#ifndef REPLAY_DB_H
+#define REPLAY_DB_H
+
+#include "integers.h"         /* for uint32_t     */
+#include "datatypes.h"        /* for v128_t       */
+#include "err.h"              /* for err_status_t */
+
+/*
+ * if the ith least significant bit is one, then the packet index
+ * window_end-i is in the database
+ */
+
+typedef struct {
+  uint32_t window_start;   /* packet index of the first bit in bitmask */
+  v128_t bitmask;  
+} rdb_t;
+
+#define rdb_bits_in_bitmask (8*sizeof(v128_t))   
+
+/*
+ * rdb init
+ *
+ * initalizes rdb
+ *
+ * returns err_status_ok on success, err_status_t_fail otherwise
+ */
+
+err_status_t
+rdb_init(rdb_t *rdb);
+
+
+/*
+ * rdb_check
+ *
+ * checks to see if index appears in rdb
+ *
+ * returns err_status_fail if the index already appears in rdb,
+ * returns err_status_ok otherwise
+ */
+
+err_status_t
+rdb_check(const rdb_t *rdb, uint32_t index);  
+
+/*
+ * rdb_add_index
+ *
+ * adds index to rdb_t (and does *not* check if index appears in db)
+ *
+ * returns err_status_ok on success, err_status_fail otherwise
+ *
+ */
+
+err_status_t
+rdb_add_index(rdb_t *rdb, uint32_t index);
+
+/*
+ * the functions rdb_increment() and rdb_get_value() are for use by 
+ * senders, not receivers - DO NOT use these functions on the same
+ * rdb_t upon which rdb_add_index is used!
+ */
+
+
+/*
+ * rdb_increment(db) increments the sequence number in db, if it is 
+ * not too high
+ *
+ * return values:
+ * 
+ *    err_status_ok            no problem
+ *    err_status_key_expired   sequence number too high
+ *
+ */
+err_status_t
+rdb_increment(rdb_t *rdb);
+
+/*
+ * rdb_get_value(db) returns the current sequence number of db
+ */
+
+uint32_t
+rdb_get_value(const rdb_t *rdb);
+
+
+#endif /* REPLAY_DB_H */ 
diff --git a/crypto/include/rdbx.h b/crypto/include/rdbx.h
new file mode 100644
index 0000000..1e581d1
--- /dev/null
+++ b/crypto/include/rdbx.h
@@ -0,0 +1,186 @@
+/*
+ * rdbx.h
+ *
+ * replay database with extended packet indices, using a rollover counter
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ *
+ */
+
+#ifndef RDBX_H
+#define RDBX_H
+
+#include "datatypes.h"
+#include "err.h"
+
+/* #define ROC_TEST */  
+
+#ifndef ROC_TEST
+
+typedef uint16_t sequence_number_t;   /* 16 bit sequence number  */
+typedef uint32_t rollover_counter_t;   /* 32 bit rollover counter */
+
+#else  /* use small seq_num and roc datatypes for testing purposes */
+
+typedef unsigned char sequence_number_t;         /* 8 bit sequence number   */
+typedef uint16_t rollover_counter_t;   /* 16 bit rollover counter */
+
+#endif
+
+#define seq_num_median (1 << (8*sizeof(sequence_number_t) - 1))
+#define seq_num_max    (1 << (8*sizeof(sequence_number_t)))
+
+/*
+ * An xtd_seq_num_t is a 64-bit unsigned integer used as an 'extended'
+ * sequence number.  
+ */
+
+typedef uint64_t xtd_seq_num_t;
+
+
+/*
+ * An rdbx_t is a replay database with extended range; it uses an
+ * xtd_seq_num_t and a bitmask of recently received indices.
+ */
+
+typedef struct {
+  xtd_seq_num_t index;
+  bitvector_t bitmask;
+} rdbx_t;
+
+
+/*
+ * rdbx_init(rdbx_ptr, ws)
+ *
+ * initializes the rdbx pointed to by its argument with the window size ws,
+ * setting the rollover counter and sequence number to zero
+ */
+
+err_status_t
+rdbx_init(rdbx_t *rdbx, unsigned long ws);
+
+
+/*
+ * rdbx_uninit(rdbx_ptr)
+ *
+ * frees memory associated with the rdbx
+ */
+
+err_status_t
+rdbx_uninit(rdbx_t *rdbx);
+
+
+/*
+ * rdbx_estimate_index(rdbx, guess, s)
+ * 
+ * given an rdbx and a sequence number s (from a newly arrived packet),
+ * sets the contents of *guess to contain the best guess of the packet
+ * index to which s corresponds, and returns the difference between
+ * *guess and the locally stored synch info
+ */
+
+int
+rdbx_estimate_index(const rdbx_t *rdbx,
+		    xtd_seq_num_t *guess,
+		    sequence_number_t s);
+
+/*
+ * rdbx_check(rdbx, delta);
+ *
+ * rdbx_check(&r, delta) checks to see if the xtd_seq_num_t
+ * which is at rdbx->window_start + delta is in the rdb
+ *
+ */
+
+err_status_t
+rdbx_check(const rdbx_t *rdbx, int difference);
+
+/*
+ * replay_add_index(rdbx, delta)
+ * 
+ * adds the xtd_seq_num_t at rdbx->window_start + delta to replay_db
+ * (and does *not* check if that xtd_seq_num_t appears in db)
+ *
+ * this function should be called *only* after replay_check has
+ * indicated that the index does not appear in the rdbx, and a mutex
+ * should protect the rdbx between these calls if necessary.
+ */
+
+err_status_t
+rdbx_add_index(rdbx_t *rdbx, int delta);
+
+
+/*
+ * rdbx_set_roc(rdbx, roc) initalizes the rdbx_t at the location rdbx
+ * to have the rollover counter value roc.  If that value is less than
+ * the current rollover counter value, then the function returns
+ * err_status_replay_old; otherwise, err_status_ok is returned.
+ * 
+ */
+
+err_status_t
+rdbx_set_roc(rdbx_t *rdbx, uint32_t roc);
+
+/*
+ * rdbx_get_roc(rdbx) returns the value of the rollover counter for
+ * the rdbx_t pointed to by rdbx
+ * 
+ */
+
+xtd_seq_num_t
+rdbx_get_packet_index(const rdbx_t *rdbx);
+
+/*
+ * xtd_seq_num_t functions - these are *internal* functions of rdbx, and
+ * shouldn't be used to manipulate rdbx internal values.  use the rdbx
+ * api instead!
+ */
+
+/*
+ * rdbx_get_ws(rdbx_ptr)
+ *
+ * gets the window size which was used to initialize the rdbx
+ */
+
+unsigned long
+rdbx_get_window_size(const rdbx_t *rdbx);
+
+
+/* index_init(&pi) initializes a packet index pi (sets it to zero) */
+
+void
+index_init(xtd_seq_num_t *pi);
+
+/* index_advance(&pi, s) advances a xtd_seq_num_t forward by s */
+
+void
+index_advance(xtd_seq_num_t *pi, sequence_number_t s);
+
+
+/*
+ * index_guess(local, guess, s)
+ * 
+ * given a xtd_seq_num_t local (which represents the highest
+ * known-to-be-good index) and a sequence number s (from a newly
+ * arrived packet), sets the contents of *guess to contain the best
+ * guess of the packet index to which s corresponds, and returns the
+ * difference between *guess and *local
+ */
+
+int
+index_guess(const xtd_seq_num_t *local,
+		   xtd_seq_num_t *guess,
+		   sequence_number_t s);
+
+
+#endif /* RDBX_H */
+
+
+
+
+
+
+
+
+
diff --git a/crypto/include/sha1.h b/crypto/include/sha1.h
new file mode 100644
index 0000000..e3af4d4
--- /dev/null
+++ b/crypto/include/sha1.h
@@ -0,0 +1,108 @@
+/*
+ * sha1.h
+ *
+ * interface to the Secure Hash Algorithm v.1 (SHA-1), specified in
+ * FIPS 180-1
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef SHA1_H
+#define SHA1_H
+
+#include "err.h"
+#include "datatypes.h"
+
+typedef struct {
+  uint32_t H[5];             /* state vector                    */
+  uint32_t M[16];            /* message buffer                  */
+  int octets_in_buffer;      /* octets of message in buffer     */
+  uint32_t num_bits_in_msg;  /* total number of bits in message */
+} sha1_ctx_t;
+
+/*
+ * sha1(&ctx, msg, len, output) hashes the len octets starting at msg
+ * into the SHA1 context, then writes the result to the 20 octets at
+ * output
+ * 
+ */
+
+void
+sha1(const uint8_t *message,  int octets_in_msg, uint32_t output[5]);
+
+/*
+ * sha1_init(&ctx) initializes the SHA1 context ctx
+ * 
+ * sha1_update(&ctx, msg, len) hashes the len octets starting at msg
+ * into the SHA1 context
+ * 
+ * sha1_final(&ctx, output) performs the final processing of the SHA1
+ * context and writes the result to the 20 octets at output
+ *
+ */
+
+void
+sha1_init(sha1_ctx_t *ctx);
+
+void
+sha1_update(sha1_ctx_t *ctx, const uint8_t *M, int octets_in_msg);
+
+void
+sha1_final(sha1_ctx_t *ctx, uint32_t output[5]);
+
+/*
+ * The sha1_core function is INTERNAL to SHA-1, but it is declared
+ * here because it is also used by the cipher SEAL 3.0 in its key
+ * setup algorithm.  
+ */
+
+/*
+ *  sha1_core(M, H) computes the core sha1 compression function, where M is
+ *  the next part of the message and H is the intermediate state {H0,
+ *  H1, ...}
+ *
+ *  this function does not do any of the padding required in the
+ *  complete sha1 function
+ */
+
+void
+sha1_core(const uint32_t M[16], uint32_t hash_value[5]);
+     
+#endif /* SHA1_H */
diff --git a/crypto/include/stat.h b/crypto/include/stat.h
new file mode 100644
index 0000000..e28b131
--- /dev/null
+++ b/crypto/include/stat.h
@@ -0,0 +1,69 @@
+/*
+ * stats.h
+ * 
+ * interface to statistical test functions
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright(c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef STAT_H
+#define STAT_H
+
+#include "datatypes.h"       /* for uint8_t                       */
+#include "err.h"             /* for err_status_t                  */
+#include "rand_source.h"     /* for rand_source_func_t definition */
+
+err_status_t
+stat_test_monobit(uint8_t *data);
+
+err_status_t
+stat_test_poker(uint8_t *data);
+
+err_status_t
+stat_test_runs(uint8_t *data);
+
+err_status_t
+stat_test_rand_source(rand_source_func_t rs);
+
+err_status_t
+stat_test_rand_source_with_repetition(rand_source_func_t source, unsigned num_trials);
+
+#endif /* STAT_H */
diff --git a/crypto/include/xfm.h b/crypto/include/xfm.h
new file mode 100644
index 0000000..5837149
--- /dev/null
+++ b/crypto/include/xfm.h
@@ -0,0 +1,139 @@
+/*
+ * xfm.h
+ *
+ * interface for abstract crypto transform
+ * 
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+#ifndef XFM_H
+#define XFM_H
+
+#include "crypto_kernel.h"
+#include "err.h"
+
+/**
+ * @defgroup Crypto Cryptography
+ *
+ * A simple interface to an abstract cryptographic transform that
+ * provides both confidentiality and message authentication.
+ *
+ * @{
+ */
+
+/**
+ * @brief applies a crypto transform
+ *
+ * The function pointer xfm_func_t points to a function that
+ * implements a crypto transform, and provides a uniform API for
+ * accessing crypto mechanisms.
+ * 
+ * @param key       location of secret key                  
+ *
+ * @param clear     data to be authenticated only           
+ *
+ * @param clear_len length of data to be authenticated only 
+ *
+ * @param iv        location to write the Initialization Vector (IV)
+ *
+ * @param protect   location of the data to be encrypted and
+ * authenticated (before the function call), and the ciphertext
+ * and authentication tag (after the call)
+ *
+ * @param protected_len location of the length of the data to be
+ * encrypted and authenticated (before the function call), and the
+ * length of the ciphertext (after the call)
+ *
+ * @param auth_tag   location to write auth tag              
+ */
+
+typedef err_status_t (*xfm_func_t) 
+     (void *key,            
+      void *clear,          
+      unsigned clear_len,   
+      void *iv,             
+      void *protect,         
+      unsigned *protected_len, 
+      void *auth_tag        
+      );
+
+typedef 
+err_status_t (*xfm_inv_t)
+     (void *key,            /* location of secret key                  */
+      void *clear,          /* data to be authenticated only           */
+      unsigned clear_len,   /* length of data to be authenticated only */
+      void *iv,             /* location of iv                          */
+      void *opaque,         /* data to be decrypted and authenticated  */
+      unsigned *opaque_len, /* location of the length of data to be
+			     * decrypted and authd (before and after) 
+			     */
+      void *auth_tag        /* location of auth tag                    */
+      );
+
+typedef struct xfm_ctx_t {
+  xfm_func_t func;
+  xfm_inv_t  inv;
+  unsigned key_len;
+  unsigned iv_len;
+  unsigned auth_tag_len;
+} xfm_ctx_t;
+
+typedef xfm_ctx_t *xfm_t;
+
+#define xfm_get_key_len(xfm) ((xfm)->key_len)
+
+#define xfm_get_iv_len(xfm) ((xfm)->iv_len)
+
+#define xfm_get_auth_tag_len(xfm) ((xfm)->auth_tag_len)
+
+
+/* cryptoalgo - 5/28 */
+  
+typedef err_status_t (*cryptoalg_func_t) 
+     (void *key,            
+      void *clear,          
+      unsigned clear_len,   
+      void *iv,             
+      void *opaque,         
+      unsigned *opaque_len
+      );
+
+typedef 
+err_status_t (*cryptoalg_inv_t)
+     (void *key,            /* location of secret key                  */
+      void *clear,          /* data to be authenticated only           */
+      unsigned clear_len,   /* length of data to be authenticated only */
+      void *iv,             /* location of iv                          */
+      void *opaque,         /* data to be decrypted and authenticated  */
+      unsigned *opaque_len  /* location of the length of data to be
+			     * decrypted and authd (before and after) 
+			     */
+      );
+
+typedef struct cryptoalg_ctx_t {
+  cryptoalg_func_t enc;
+  cryptoalg_inv_t  dec;
+  unsigned key_len;
+  unsigned iv_len;
+  unsigned auth_tag_len;
+  unsigned max_expansion; 
+} cryptoalg_ctx_t;
+
+typedef cryptoalg_ctx_t *cryptoalg_t;
+
+#define cryptoalg_get_key_len(cryptoalg) ((cryptoalg)->key_len)
+
+#define cryptoalg_get_iv_len(cryptoalg) ((cryptoalg)->iv_len)
+
+#define cryptoalg_get_auth_tag_len(cryptoalg) ((cryptoalg)->auth_tag_len)
+
+
+
+/**
+ * @}
+ */
+
+#endif /* XFM_H */
+
+
diff --git a/crypto/kernel/alloc.c b/crypto/kernel/alloc.c
new file mode 100644
index 0000000..5dd0947
--- /dev/null
+++ b/crypto/kernel/alloc.c
@@ -0,0 +1,119 @@
+/*
+ * alloc.c
+ *
+ * memory allocation and deallocation 
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "alloc.h"
+#include "crypto_kernel.h"
+
+/* the debug module for memory allocation */
+
+debug_module_t mod_alloc = {
+  0,                  /* debugging is off by default */
+  "alloc"             /* printable name for module   */
+};
+
+/*
+ * Nota bene: the debugging statements for crypto_alloc() and
+ * crypto_free() have identical prefixes, which include the addresses
+ * of the memory locations on which they are operating.  This fact can
+ * be used to locate memory leaks, by turning on memory debugging,
+ * grepping for 'alloc', then matching alloc and free calls by
+ * address.
+ */
+
+#ifdef SRTP_KERNEL_LINUX
+
+#include <linux/interrupt.h>
+
+void *
+crypto_alloc(size_t size) {
+  void *ptr;
+
+  ptr = kmalloc(size, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
+
+  if (ptr) {
+    debug_print(mod_alloc, "(location: %p) allocated", ptr);
+  } else
+    debug_print(mod_alloc, "allocation failed (asked for %d bytes)\n", size);
+
+  return ptr;
+}
+
+void 
+crypto_free(void *ptr) {
+
+  debug_print(mod_alloc, "(location: %p) freed", ptr);
+
+  kfree(ptr);
+}
+
+
+#elif defined(HAVE_STDLIB_H)
+
+void *
+crypto_alloc(size_t size) {
+  void *ptr;
+
+  ptr = malloc(size);
+    
+  if (ptr) {
+    debug_print(mod_alloc, "(location: %p) allocated", ptr);
+  } else
+    debug_print(mod_alloc, "allocation failed (asked for %d bytes)\n", size);
+    
+  return ptr;
+}
+
+void 
+crypto_free(void *ptr) {
+
+  debug_print(mod_alloc, "(location: %p) freed", ptr);
+
+  free(ptr);
+}
+
+#else  /* we need to define our own memory allocation routines */
+
+#error no memory allocation defined yet 
+
+#endif
diff --git a/crypto/kernel/crypto_kernel.c b/crypto/kernel/crypto_kernel.c
new file mode 100644
index 0000000..230dda6
--- /dev/null
+++ b/crypto/kernel/crypto_kernel.c
@@ -0,0 +1,523 @@
+/*
+ * crypto_kernel.c
+ *
+ * header for the cryptographic kernel
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright(c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "alloc.h"
+
+#include "crypto_kernel.h"
+
+/* the debug module for the crypto_kernel */
+
+debug_module_t mod_crypto_kernel = {
+  0,                  /* debugging is off by default */
+  "crypto kernel"     /* printable name for module   */
+};
+
+/*
+ * other debug modules that can be included in the kernel
+ */
+
+extern debug_module_t mod_auth;
+extern debug_module_t mod_cipher;
+extern debug_module_t mod_stat;
+extern debug_module_t mod_alloc;
+
+/* 
+ * cipher types that can be included in the kernel
+ */ 
+
+extern cipher_type_t null_cipher;
+extern cipher_type_t aes_icm;
+extern cipher_type_t aes_cbc;
+
+
+/*
+ * auth func types that can be included in the kernel
+ */
+
+extern auth_type_t null_auth;
+extern auth_type_t hmac;
+
+/* crypto_kernel is a global variable, the only one of its datatype */
+
+crypto_kernel_t
+crypto_kernel = {
+  crypto_kernel_state_insecure,    /* start off in insecure state */
+  NULL,                            /* no cipher types yet         */
+  NULL,                            /* no auth types yet           */
+  NULL                             /* no debug modules yet        */
+};
+
+#define MAX_RNG_TRIALS 25
+
+err_status_t
+crypto_kernel_init() {
+  err_status_t status;  
+
+  /* check the security state */
+  if (crypto_kernel.state == crypto_kernel_state_secure) {
+    
+    /*
+     * we're already in the secure state, but we've been asked to
+     * re-initialize, so we just re-run the self-tests and then return
+     */
+    return crypto_kernel_status(); 
+  }
+
+  /* initialize error reporting system */
+  status = err_reporting_init("crypto");
+  if (status)
+    return status;
+
+  /* load debug modules */
+  status = crypto_kernel_load_debug_module(&mod_crypto_kernel);
+  if (status)
+    return status;
+  status = crypto_kernel_load_debug_module(&mod_auth);
+  if (status)
+    return status;
+  status = crypto_kernel_load_debug_module(&mod_cipher);
+  if (status)
+    return status;
+  status = crypto_kernel_load_debug_module(&mod_stat);
+  if (status)
+    return status;
+  status = crypto_kernel_load_debug_module(&mod_alloc);
+  if (status)
+    return status;
+  
+  /* initialize random number generator */
+  status = rand_source_init();
+  if (status)
+    return status;
+
+  /* run FIPS-140 statistical tests on rand_source */  
+  status = stat_test_rand_source_with_repetition(rand_source_get_octet_string, MAX_RNG_TRIALS);
+  if (status)
+    return status;
+
+  /* initialize pseudorandom number generator */
+  status = ctr_prng_init(rand_source_get_octet_string);
+  if (status)
+    return status;
+
+  /* run FIPS-140 statistical tests on ctr_prng */  
+  status = stat_test_rand_source_with_repetition(ctr_prng_get_octet_string, MAX_RNG_TRIALS);
+  if (status)
+    return status;
+ 
+  /* load cipher types */
+  status = crypto_kernel_load_cipher_type(&null_cipher, NULL_CIPHER);
+  if (status) 
+    return status;
+  status = crypto_kernel_load_cipher_type(&aes_icm, AES_128_ICM);
+  if (status) 
+    return status;
+  status = crypto_kernel_load_cipher_type(&aes_cbc, AES_128_CBC);
+  if (status) 
+    return status;
+
+  /* load auth func types */
+  status = crypto_kernel_load_auth_type(&null_auth, NULL_AUTH);
+  if (status)
+    return status;
+  status = crypto_kernel_load_auth_type(&hmac, HMAC_SHA1);
+  if (status)
+    return status;
+
+  /* change state to secure */
+  crypto_kernel.state = crypto_kernel_state_secure;
+
+  return err_status_ok;
+}
+
+err_status_t
+crypto_kernel_status() {
+  err_status_t status;
+  kernel_cipher_type_t  *ctype = crypto_kernel.cipher_type_list;
+  kernel_auth_type_t    *atype = crypto_kernel.auth_type_list;
+  kernel_debug_module_t *dm    = crypto_kernel.debug_module_list;
+
+  /* run FIPS-140 statistical tests on rand_source */  
+  printf("testing rand_source...");
+  status = stat_test_rand_source_with_repetition(rand_source_get_octet_string, MAX_RNG_TRIALS);
+  if (status) {
+    printf("failed\n");
+    crypto_kernel.state = crypto_kernel_state_insecure;
+    return status;
+  }  
+  printf("passed\n");
+
+  /* for each cipher type, describe and test */
+  while(ctype != NULL) {
+    printf("cipher: %s\n", ctype->cipher_type->description);
+    printf("  instance count: %d\n", ctype->cipher_type->ref_count);
+    printf("  self-test: ");
+    status = cipher_type_self_test(ctype->cipher_type);
+    if (status) {
+      printf("failed with error code %d\n", status);
+      exit(status);
+    }
+    printf("passed\n");
+    ctype = ctype->next;
+  }
+  
+  /* for each auth type, describe and test */
+  while(atype != NULL) {
+    printf("auth func: %s\n", atype->auth_type->description);
+    printf("  instance count: %d\n", atype->auth_type->ref_count);
+    printf("  self-test: ");
+    status = auth_type_self_test(atype->auth_type);
+    if (status) {
+      printf("failed with error code %d\n", status);
+      exit(status);
+    }
+    printf("passed\n");
+    atype = atype->next;
+  }
+
+  /* describe each debug module */
+  printf("debug modules loaded:\n");
+  while (dm != NULL) {
+    printf("  %s ", dm->mod->name);  
+    if (dm->mod->on)
+      printf("(on)\n");
+    else
+      printf("(off)\n");
+    dm = dm->next;
+  }
+
+  return err_status_ok;
+}
+
+err_status_t
+crypto_kernel_list_debug_modules() {
+  kernel_debug_module_t *dm = crypto_kernel.debug_module_list;
+
+  /* describe each debug module */
+  printf("debug modules loaded:\n");
+  while (dm != NULL) {
+    printf("  %s ", dm->mod->name);  
+    if (dm->mod->on)
+      printf("(on)\n");
+    else
+      printf("(off)\n");
+    dm = dm->next;
+  }
+
+  return err_status_ok;
+}
+
+err_status_t
+crypto_kernel_shutdown() {
+  err_status_t status;
+
+  /*
+   * free dynamic memory used in crypto_kernel at present
+   */
+
+  /* walk down cipher type list, freeing memory */
+  while (crypto_kernel.cipher_type_list != NULL) {
+    kernel_cipher_type_t *ctype = crypto_kernel.cipher_type_list;
+    crypto_kernel.cipher_type_list = ctype->next;
+    debug_print(mod_crypto_kernel, 
+		"freeing memory for cipher %s", 
+		ctype->cipher_type->description);
+    crypto_free(ctype);
+  }
+
+  /* walk down authetication module list, freeing memory */
+  while (crypto_kernel.auth_type_list != NULL) {
+     kernel_auth_type_t *atype = crypto_kernel.auth_type_list;
+     crypto_kernel.auth_type_list = atype->next;
+     debug_print(mod_crypto_kernel, 
+		"freeing memory for authentication %s",
+		atype->auth_type->description);
+     crypto_free(atype);
+  }
+
+  /* walk down debug module list, freeing memory */
+  while (crypto_kernel.debug_module_list != NULL) {
+    kernel_debug_module_t *kdm = crypto_kernel.debug_module_list;
+    crypto_kernel.debug_module_list = kdm->next;
+    debug_print(mod_crypto_kernel, 
+		"freeing memory for debug module %s", 
+		kdm->mod->name);
+    crypto_free(kdm);
+  }
+
+  /* de-initialize random number generator */  status = rand_source_deinit();
+  if (status)
+    return status;
+
+  /* return to insecure state */
+  crypto_kernel.state = crypto_kernel_state_insecure;
+  
+  return err_status_ok;
+}
+
+err_status_t
+crypto_kernel_load_cipher_type(cipher_type_t *new_ct, cipher_type_id_t id) {
+  kernel_cipher_type_t *ctype, *new_ctype;
+  err_status_t status;
+
+  /* defensive coding */
+  if (new_ct == NULL)
+    return err_status_bad_param;
+
+  /* check cipher type by running self-test */
+  status = cipher_type_self_test(new_ct);
+  if (status) {
+    return status;
+  }
+
+  /* walk down list, checking if this type is in the list already  */
+  ctype = crypto_kernel.cipher_type_list;
+  while (ctype != NULL) {
+    if ((new_ct == ctype->cipher_type) || (id == ctype->id))
+      return err_status_bad_param;    
+    ctype = ctype->next;
+  }
+
+  /* put new_ct at the head of the list */
+  /* allocate memory */
+  new_ctype = (kernel_cipher_type_t *) crypto_alloc(sizeof(kernel_cipher_type_t));
+  if (new_ctype == NULL)
+    return err_status_alloc_fail;
+    
+  /* set fields */
+  new_ctype->cipher_type = new_ct;
+  new_ctype->id = id;
+  new_ctype->next = crypto_kernel.cipher_type_list;
+
+  /* set head of list to new cipher type */
+  crypto_kernel.cipher_type_list = new_ctype;    
+
+  /* load debug module, if there is one present */
+  if (new_ct->debug != NULL)
+    crypto_kernel_load_debug_module(new_ct->debug);
+  /* we could check for errors here */
+
+  return err_status_ok;
+}
+
+err_status_t
+crypto_kernel_load_auth_type(auth_type_t *new_at, auth_type_id_t id) {
+  kernel_auth_type_t *atype, *new_atype;
+  err_status_t status;
+
+  /* defensive coding */
+  if (new_at == NULL)
+    return err_status_bad_param;
+
+  /* check auth type by running self-test */
+  status = auth_type_self_test(new_at);
+  if (status) {
+    return status;
+  }
+
+  /* walk down list, checking if this type is in the list already  */
+  atype = crypto_kernel.auth_type_list;
+  while (atype != NULL) {
+    if ((new_at == atype->auth_type) || (id == atype->id))
+      return err_status_bad_param;    
+    atype = atype->next;
+  }
+
+  /* put new_at at the head of the list */
+  /* allocate memory */
+  new_atype = (kernel_auth_type_t *)crypto_alloc(sizeof(kernel_auth_type_t));
+  if (new_atype == NULL)
+    return err_status_alloc_fail;
+    
+  /* set fields */
+  new_atype->auth_type = new_at;
+  new_atype->id = id;
+  new_atype->next = crypto_kernel.auth_type_list;
+
+  /* set head of list to new auth type */
+  crypto_kernel.auth_type_list = new_atype;    
+
+  /* load debug module, if there is one present */
+  if (new_at->debug != NULL)
+    crypto_kernel_load_debug_module(new_at->debug);
+  /* we could check for errors here */
+
+  return err_status_ok;
+
+}
+
+
+cipher_type_t *
+crypto_kernel_get_cipher_type(cipher_type_id_t id) {
+  kernel_cipher_type_t *ctype;
+  
+  /* walk down list, looking for id  */
+  ctype = crypto_kernel.cipher_type_list;
+  while (ctype != NULL) {
+    if (id == ctype->id)
+      return ctype->cipher_type; 
+    ctype = ctype->next;
+  } 
+
+  /* haven't found the right one, indicate failure by returning NULL */
+  return NULL;
+}
+
+
+err_status_t
+crypto_kernel_alloc_cipher(cipher_type_id_t id, 
+			      cipher_pointer_t *cp, 
+			      int key_len) {
+  cipher_type_t *ct;
+
+  /* 
+   * if the crypto_kernel is not yet initialized, we refuse to allocate
+   * any ciphers - this is a bit extra-paranoid
+   */
+  if (crypto_kernel.state != crypto_kernel_state_secure)
+    return err_status_init_fail;
+
+  ct = crypto_kernel_get_cipher_type(id);
+  if (!ct)
+    return err_status_fail;
+  
+  return ((ct)->alloc(cp, key_len));
+}
+
+
+
+auth_type_t *
+crypto_kernel_get_auth_type(auth_type_id_t id) {
+  kernel_auth_type_t *atype;
+  
+  /* walk down list, looking for id  */
+  atype = crypto_kernel.auth_type_list;
+  while (atype != NULL) {
+    if (id == atype->id)
+      return atype->auth_type; 
+    atype = atype->next;
+  } 
+
+  /* haven't found the right one, indicate failure by returning NULL */
+  return NULL;
+}
+
+err_status_t
+crypto_kernel_alloc_auth(auth_type_id_t id, 
+			 auth_pointer_t *ap, 
+			 int key_len,
+			 int tag_len) {
+  auth_type_t *at;
+
+  /* 
+   * if the crypto_kernel is not yet initialized, we refuse to allocate
+   * any auth functions - this is a bit extra-paranoid
+   */
+  if (crypto_kernel.state != crypto_kernel_state_secure)
+    return err_status_init_fail;
+
+  at = crypto_kernel_get_auth_type(id);
+  if (!at)
+    return err_status_fail;
+  
+  return ((at)->alloc(ap, key_len, tag_len));
+}
+
+err_status_t
+crypto_kernel_load_debug_module(debug_module_t *new_dm) {
+  kernel_debug_module_t *kdm, *new;
+
+  /* defensive coding */
+  if (new_dm == NULL)
+    return err_status_bad_param;
+
+  /* walk down list, checking if this type is in the list already  */
+  kdm = crypto_kernel.debug_module_list;
+  while (kdm != NULL) {
+    if (strncmp(new_dm->name, kdm->mod->name, 64) == 0)
+      return err_status_bad_param;    
+    kdm = kdm->next;
+  }
+
+  /* put new_dm at the head of the list */
+  /* allocate memory */
+  new = (kernel_debug_module_t *)crypto_alloc(sizeof(kernel_debug_module_t));
+  if (new == NULL)
+    return err_status_alloc_fail;
+    
+  /* set fields */
+  new->mod = new_dm;
+  new->next = crypto_kernel.debug_module_list;
+
+  /* set head of list to new cipher type */
+  crypto_kernel.debug_module_list = new;    
+
+  return err_status_ok;
+}
+
+err_status_t
+crypto_kernel_set_debug_module(char *name, int on) {
+  kernel_debug_module_t *kdm;
+  
+  /* walk down list, checking if this type is in the list already  */
+  kdm = crypto_kernel.debug_module_list;
+  while (kdm != NULL) {
+    if (strncmp(name, kdm->mod->name, 64) == 0) {
+      kdm->mod->on = on;
+      return err_status_ok;
+    }
+    kdm = kdm->next;
+  }
+
+  return err_status_fail;
+}
+
+err_status_t
+crypto_get_random(unsigned char *buffer, unsigned int length) {
+  if (crypto_kernel.state == crypto_kernel_state_secure)
+    return ctr_prng_get_octet_string(buffer, length);
+  else
+    return err_status_fail;
+}
diff --git a/crypto/kernel/err.c b/crypto/kernel/err.c
new file mode 100644
index 0000000..4a3a858
--- /dev/null
+++ b/crypto/kernel/err.c
@@ -0,0 +1,148 @@
+/*
+ * err.c
+ *
+ * error status reporting functions
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright(c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "err.h"
+
+#ifdef ERR_REPORTING_SYSLOG
+# ifdef HAVE_SYSLOG_H
+#  include <syslog.h>
+# endif
+#endif
+
+
+/*  err_level reflects the level of errors that are reported  */
+
+err_reporting_level_t err_level = err_level_none;
+
+#ifdef SRTP_KERNEL_LINUX
+err_status_t
+err_reporting_init(char *ident) {
+
+  return err_status_ok;
+}
+
+#else /* SRTP_KERNEL_LINUX */	
+
+/* err_file is the FILE to which errors are reported */
+
+static FILE *err_file = NULL;
+
+err_status_t
+err_reporting_init(char *ident) {
+#ifdef ERR_REPORTING_SYSLOG
+  openlog(ident, LOG_PID, LOG_AUTHPRIV);
+#endif
+  
+  /*
+   * Believe it or not, openlog doesn't return an error on failure.
+   * But then, neither does the syslog() call...
+   */
+
+#ifdef ERR_REPORTING_STDOUT
+  err_file = stdout;
+#elif defined(USE_ERR_REPORTING_FILE)
+  /* open file for error reporting */
+  err_file = fopen(ERR_REPORTING_FILE, "w");
+  if (err_file == NULL)
+    return err_status_init_fail;
+#endif
+
+  return err_status_ok;
+}
+
+void
+err_report(int priority, char *format, ...) {
+  va_list args;
+
+  if (priority <= err_level) {
+
+    va_start(args, format);
+    if (err_file != NULL) {
+      vfprintf(err_file, format, args);
+	  /*      fprintf(err_file, "\n"); */
+    }
+#ifdef ERR_REPORTING_SYSLOG
+    if (1) { /* FIXME: Make this a runtime option. */
+      int syslogpri;
+
+      switch (priority) {
+      case err_level_emergency:
+	syslogpri = LOG_EMERG;
+	break;
+      case err_level_alert:
+	syslogpri = LOG_ALERT;
+	break;
+      case err_level_critical:
+	syslogpri = LOG_CRIT;
+	break;
+      case err_level_error:
+	syslogpri = LOG_ERR;
+	break;
+      case err_level_warning:
+	syslogpri = LOG_WARNING;
+	break;
+      case err_level_notice:
+	syslogpri = LOG_NOTICE;
+	break;
+      case err_level_info:
+	syslogpri = LOG_INFO;
+	break;
+      case err_level_debug:
+      case err_level_none:
+      default:
+	syslogpri = LOG_DEBUG;
+	break;
+      }
+
+      vsyslog(syslogpri, format, args);
+#endif
+    va_end(args);
+  }
+}
+#endif /* SRTP_KERNEL_LINUX */	
+
+void
+err_reporting_set_level(err_reporting_level_t lvl) { 
+  err_level = lvl;
+}
diff --git a/crypto/kernel/key.c b/crypto/kernel/key.c
new file mode 100644
index 0000000..9f63b22
--- /dev/null
+++ b/crypto/kernel/key.c
@@ -0,0 +1,115 @@
+/*
+ * key.c
+ *
+ * key usage limits enforcement
+ * 
+ * David A. Mcgrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "key.h"
+
+#define soft_limit 0x10000
+
+err_status_t
+key_limit_set(key_limit_t key, const xtd_seq_num_t s) {
+#ifdef NO_64BIT_MATH
+  if (high32(s) == 0 && low32(s) < soft_limit)
+    return err_status_bad_param;
+#else
+  if (s < soft_limit)
+    return err_status_bad_param;
+#endif
+  key->num_left = s;
+  key->state = key_state_normal;
+  return err_status_ok;
+}
+
+err_status_t
+key_limit_clone(key_limit_t original, key_limit_t *new_key) {
+  if (original == NULL)
+    return err_status_bad_param;
+  *new_key = original;
+  return err_status_ok;
+}
+
+err_status_t
+key_limit_check(const key_limit_t key) {
+  if (key->state == key_state_expired)
+    return err_status_key_expired;
+  return err_status_ok;
+}
+
+key_event_t
+key_limit_update(key_limit_t key) {
+#ifdef NO_64BIT_MATH
+  if (low32(key->num_left) == 0)
+  {
+	  // carry
+	  key->num_left = make64(high32(key->num_left)-1,low32(key->num_left) - 1);
+  }
+  else
+  {
+	  // no carry
+	  key->num_left = make64(high32(key->num_left),low32(key->num_left) - 1);
+  }
+  if (high32(key->num_left) != 0 || low32(key->num_left) >= soft_limit) {
+    return key_event_normal;   /* we're above the soft limit */
+  }
+#else
+  key->num_left--;
+  if (key->num_left >= soft_limit) {
+    return key_event_normal;   /* we're above the soft limit */
+  }
+#endif
+  if (key->state == key_state_normal) {
+    /* we just passed the soft limit, so change the state */
+    key->state = key_state_past_soft_limit;
+  }
+#ifdef NO_64BIT_MATH
+  if (low32(key->num_left) == 0 && high32(key->num_left == 0))
+#else
+  if (key->num_left < 1)
+#endif
+  { /* we just hit the hard limit */
+    key->state = key_state_expired;
+    return key_event_hard_limit;
+  }
+   return key_event_soft_limit;
+}
+
diff --git a/crypto/math/datatypes.c b/crypto/math/datatypes.c
new file mode 100644
index 0000000..65446c3
--- /dev/null
+++ b/crypto/math/datatypes.c
@@ -0,0 +1,718 @@
+/*
+ * datatypes.c
+ *
+ * data types for finite fields and functions for input, output, and
+ * manipulation
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "datatypes.h"
+
+int 
+octet_weight[256] = {
+  0, 1, 1, 2, 1, 2, 2, 3,
+  1, 2, 2, 3, 2, 3, 3, 4,
+  1, 2, 2, 3, 2, 3, 3, 4,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  1, 2, 2, 3, 2, 3, 3, 4,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  1, 2, 2, 3, 2, 3, 3, 4,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  4, 5, 5, 6, 5, 6, 6, 7,
+  1, 2, 2, 3, 2, 3, 3, 4,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  4, 5, 5, 6, 5, 6, 6, 7,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  4, 5, 5, 6, 5, 6, 6, 7,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  4, 5, 5, 6, 5, 6, 6, 7,
+  4, 5, 5, 6, 5, 6, 6, 7,
+  5, 6, 6, 7, 6, 7, 7, 8
+};
+
+int
+octet_get_weight(uint8_t octet) {
+  extern int octet_weight[256];
+
+  return octet_weight[octet];
+}  
+
+/*
+ * bit_string is a buffer that is used to hold output strings, e.g.
+ * for printing.
+ */
+
+/* the value MAX_PRINT_STRING_LEN is defined in datatypes.h */
+
+char bit_string[MAX_PRINT_STRING_LEN];
+
+uint8_t
+nibble_to_hex_char(uint8_t nibble) {
+  char buf[16] = {'0', '1', '2', '3', '4', '5', '6', '7',
+		  '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
+  return buf[nibble & 0xF];
+}
+
+char *
+octet_string_hex_string(const void *s, int length) {
+  const uint8_t *str = (const uint8_t *)s;
+  int i;
+  
+  /* double length, since one octet takes two hex characters */
+  length *= 2;
+
+  /* truncate string if it would be too long */
+  if (length > MAX_PRINT_STRING_LEN)
+    length = MAX_PRINT_STRING_LEN-1;
+  
+  for (i=0; i < length; i+=2) {
+    bit_string[i]   = nibble_to_hex_char(*str >> 4);
+    bit_string[i+1] = nibble_to_hex_char(*str++ & 0xF);
+  }
+  bit_string[i] = 0; /* null terminate string */
+  return bit_string;
+}
+
+inline int
+hex_char_to_nibble(uint8_t c) {
+  switch(c) {
+  case ('0'): return 0x0;
+  case ('1'): return 0x1;
+  case ('2'): return 0x2;
+  case ('3'): return 0x3;
+  case ('4'): return 0x4;
+  case ('5'): return 0x5;
+  case ('6'): return 0x6;
+  case ('7'): return 0x7;
+  case ('8'): return 0x8;
+  case ('9'): return 0x9;
+  case ('a'): return 0xa;
+  case ('A'): return 0xa;
+  case ('b'): return 0xb;
+  case ('B'): return 0xb;
+  case ('c'): return 0xc;
+  case ('C'): return 0xc;
+  case ('d'): return 0xd;
+  case ('D'): return 0xd;
+  case ('e'): return 0xe;
+  case ('E'): return 0xe;
+  case ('f'): return 0xf;
+  case ('F'): return 0xf;
+  default: return -1;   /* this flags an error */
+  }
+  /* NOTREACHED */
+  return -1;  /* this keeps compilers from complaining */
+}
+
+int
+is_hex_string(char *s) {
+  while(*s != 0)
+    if (hex_char_to_nibble(*s++) == -1)
+      return 0;
+  return 1;
+}
+
+/*
+ * hex_string_to_octet_string converts a hexadecimal string
+ * of length 2 * len to a raw octet string of length len
+ */
+
+int
+hex_string_to_octet_string(char *raw, char *hex, int len) {
+  uint8_t x;
+  int tmp;
+  int hex_len;
+
+  hex_len = 0;
+  while (hex_len < len) {
+    tmp = hex_char_to_nibble(hex[0]);
+    if (tmp == -1)
+      return hex_len;
+    x = (tmp << 4);
+    hex_len++;
+    tmp = hex_char_to_nibble(hex[1]);
+    if (tmp == -1)
+      return hex_len;
+    x |= (tmp & 0xff);
+    hex_len++;
+    *raw++ = x;
+    hex += 2;
+  }
+  return hex_len;
+}
+
+char *
+v128_hex_string(v128_t *x) {
+  int i, j;
+
+  for (i=j=0; i < 16; i++) {
+    bit_string[j++]  = nibble_to_hex_char(x->v8[i] >> 4);
+    bit_string[j++]  = nibble_to_hex_char(x->v8[i] & 0xF);
+  }
+  
+  bit_string[j] = 0; /* null terminate string */
+  return bit_string;
+}
+
+char *
+v128_bit_string(v128_t *x) {
+  int j, index;
+  uint32_t mask;
+  
+  for (j=index=0; j < 4; j++) {
+    for (mask=0x80000000; mask > 0; mask >>= 1) {
+      if (x->v32[j] & mask)
+	bit_string[index] = '1';
+      else
+	bit_string[index] = '0';
+      ++index;
+    }
+  }
+  bit_string[128] = 0; /* null terminate string */
+
+  return bit_string;
+}
+
+void
+v128_copy_octet_string(v128_t *x, const uint8_t s[16]) {
+#ifdef ALIGNMENT_32BIT_REQUIRED
+  if ((((uint32_t) &s[0]) & 0x3) != 0)
+#endif
+  {
+	  x->v8[0]  = s[0];
+	  x->v8[1]  = s[1];
+	  x->v8[2]  = s[2];
+	  x->v8[3]  = s[3];
+	  x->v8[4]  = s[4];
+	  x->v8[5]  = s[5];
+	  x->v8[6]  = s[6];
+	  x->v8[7]  = s[7];
+	  x->v8[8]  = s[8];
+	  x->v8[9]  = s[9];
+	  x->v8[10] = s[10];
+	  x->v8[11] = s[11];
+	  x->v8[12] = s[12];
+	  x->v8[13] = s[13];
+	  x->v8[14] = s[14];
+	  x->v8[15] = s[15];
+  }
+#ifdef ALIGNMENT_32BIT_REQUIRED
+  else 
+  {
+	  v128_t *v = (v128_t *) &s[0];
+
+	  v128_copy(x,v);
+  }
+#endif
+}
+
+#ifndef DATATYPES_USE_MACROS /* little functions are not macros */
+
+void
+v128_set_to_zero(v128_t *x) {
+  _v128_set_to_zero(x);
+}
+
+void
+v128_copy(v128_t *x, const v128_t *y) {
+  _v128_copy(x, y);
+}
+
+void
+v128_xor(v128_t *z, v128_t *x, v128_t *y) {
+  _v128_xor(z, x, y);
+} 
+
+void
+v128_and(v128_t *z, v128_t *x, v128_t *y) {
+  _v128_and(z, x, y);
+}
+
+void
+v128_or(v128_t *z, v128_t *x, v128_t *y) {
+  _v128_or(z, x, y);
+}
+
+void
+v128_complement(v128_t *x) {
+  _v128_complement(x);
+}
+
+int
+v128_is_eq(const v128_t *x, const v128_t *y) {
+  return _v128_is_eq(x, y);
+}
+
+int
+v128_xor_eq(v128_t *x, const v128_t *y) {
+  return _v128_xor_eq(x, y);
+}
+
+int
+v128_get_bit(const v128_t *x, int i) {
+  return _v128_get_bit(x, i);
+}
+
+void
+v128_set_bit(v128_t *x, int i) {
+  _v128_set_bit(x, i);
+}     
+
+void
+v128_clear_bit(v128_t *x, int i){
+  _v128_clear_bit(x, i);
+}    
+
+void
+v128_set_bit_to(v128_t *x, int i, int y){
+  _v128_set_bit_to(x, i, y);
+}
+
+
+#endif /* DATATYPES_USE_MACROS */
+
+void
+v128_right_shift(v128_t *x, int index) {
+  const int base_index = index >> 5;
+  const int bit_index = index & 31;
+  int i, from;
+  uint32_t b;
+    
+  if (index > 127) {
+    v128_set_to_zero(x);
+    return;
+  }
+
+  if (bit_index == 0) {
+
+    /* copy each word from left size to right side */
+    x->v32[4-1] = x->v32[4-1-base_index];
+    for (i=4-1; i > base_index; i--) 
+      x->v32[i-1] = x->v32[i-1-base_index];
+
+  } else {
+    
+    /* set each word to the "or" of the two bit-shifted words */
+    for (i = 4; i > base_index; i--) {
+      from = i-1 - base_index;
+      b = x->v32[from] << bit_index;
+      if (from > 0)
+        b |= x->v32[from-1] >> (32-bit_index);
+      x->v32[i-1] = b;
+    }
+    
+  }
+
+  /* now wrap up the final portion */
+  for (i=0; i < base_index; i++) 
+    x->v32[i] = 0;
+  
+}
+
+void
+v128_left_shift(v128_t *x, int index) {
+  int i;
+  const int base_index = index >> 5;
+  const int bit_index = index & 31;
+
+  if (index > 127) {
+    v128_set_to_zero(x);
+    return;
+  } 
+  
+  if (bit_index == 0) {
+    for (i=0; i < 4 - base_index; i++)
+      x->v32[i] = x->v32[i+base_index];
+  } else {
+    for (i=0; i < 4 - base_index - 1; i++)
+      x->v32[i] = (x->v32[i+base_index] >> bit_index) ^
+	(x->v32[i+base_index+1] << (32 - bit_index));
+    x->v32[4 - base_index-1] = x->v32[4-1] >> bit_index;
+  }
+
+  /* now wrap up the final portion */
+  for (i = 4 - base_index; i < 4; i++) 
+    x->v32[i] = 0;
+
+}
+
+/* functions manipulating bitvector_t */
+
+#ifndef DATATYPES_USE_MACROS /* little functions are not macros */
+
+int
+bitvector_get_bit(const bitvector_t *v, int bit_index)
+{
+  return _bitvector_get_bit(v, bit_index);
+}
+
+void
+bitvector_set_bit(bitvector_t *v, int bit_index)
+{
+  _bitvector_set_bit(v, bit_index);
+}
+
+void
+bitvector_clear_bit(bitvector_t *v, int bit_index)
+{
+  _bitvector_clear_bit(v, bit_index);
+}
+
+
+#endif /* DATATYPES_USE_MACROS */
+
+int
+bitvector_alloc(bitvector_t *v, unsigned long length) {
+  unsigned long l;
+
+  /* Round length up to a multiple of bits_per_word */
+  length = (length + bits_per_word - 1) & ~(unsigned long)((bits_per_word - 1));
+
+  l = length / bits_per_word * bytes_per_word;
+
+  /* allocate memory, then set parameters */
+  if (l == 0)
+	v->word = NULL;
+  else {
+	v->word = (uint32_t*)crypto_alloc(l);
+	if (v->word == NULL) {
+	  v->word = NULL;
+	  v->length = 0;
+	  return -1;
+	}
+  }
+  v->length = length;
+
+  /* initialize bitvector to zero */
+  bitvector_set_to_zero(v);
+
+  return 0;
+}
+
+
+void
+bitvector_dealloc(bitvector_t *v) {
+  if (v->word != NULL)
+	crypto_free(v->word);
+  v->word = NULL;
+  v->length = 0;
+}
+
+void
+bitvector_set_to_zero(bitvector_t *x)
+{
+	/* C99 guarantees that memset(0) will set the value 0 for uint32_t */
+	memset(x->word, 0, x->length >> 3);
+}
+
+char *
+bitvector_bit_string(bitvector_t *x, char* buf, int len) {
+  int j, index;
+  uint32_t mask;
+  
+  for (j=index=0; j < (int)(x->length>>5) && index < len-1; j++) {
+    for (mask=0x80000000; mask > 0; mask >>= 1) {
+      if (x->word[j] & mask)
+	buf[index] = '1';
+      else
+	buf[index] = '0';
+      ++index;
+      if (index >= len-1)
+        break;
+    }
+  }
+  buf[index] = 0; /* null terminate string */
+
+  return buf;
+}
+
+void
+bitvector_left_shift(bitvector_t *x, int index) {
+  int i;
+  const int base_index = index >> 5;
+  const int bit_index = index & 31;
+  const int word_length = x->length >> 5;
+
+  if (index >= (int)x->length) {
+    bitvector_set_to_zero(x);
+    return;
+  } 
+  
+  if (bit_index == 0) {
+    for (i=0; i < word_length - base_index; i++)
+      x->word[i] = x->word[i+base_index];
+  } else {
+    for (i=0; i < word_length - base_index - 1; i++)
+      x->word[i] = (x->word[i+base_index] >> bit_index) ^
+	(x->word[i+base_index+1] << (32 - bit_index));
+    x->word[word_length - base_index-1] = x->word[word_length-1] >> bit_index;
+  }
+
+  /* now wrap up the final portion */
+  for (i = word_length - base_index; i < word_length; i++) 
+    x->word[i] = 0;
+
+}
+
+
+int
+octet_string_is_eq(uint8_t *a, uint8_t *b, int len) {
+  uint8_t *end = b + len;
+  while (b < end)
+    if (*a++ != *b++)
+      return 1;
+  return 0;
+}
+
+void
+octet_string_set_to_zero(uint8_t *s, int len) {
+  uint8_t *end = s + len;
+
+  do {
+    *s = 0;
+  } while (++s < end);
+  
+}
+
+
+/*
+ *  From RFC 1521: The Base64 Alphabet
+ *
+ *   Value Encoding  Value Encoding  Value Encoding  Value Encoding
+ *        0 A            17 R            34 i            51 z
+ *        1 B            18 S            35 j            52 0
+ *        2 C            19 T            36 k            53 1
+ *        3 D            20 U            37 l            54 2
+ *        4 E            21 V            38 m            55 3
+ *        5 F            22 W            39 n            56 4
+ *        6 G            23 X            40 o            57 5
+ *        7 H            24 Y            41 p            58 6
+ *        8 I            25 Z            42 q            59 7
+ *        9 J            26 a            43 r            60 8
+ *       10 K            27 b            44 s            61 9
+ *       11 L            28 c            45 t            62 +
+ *       12 M            29 d            46 u            63 /
+ *       13 N            30 e            47 v
+ *       14 O            31 f            48 w         (pad) =
+ *       15 P            32 g            49 x
+ *       16 Q            33 h            50 y
+ */
+
+int
+base64_char_to_sextet(uint8_t c) {
+  switch(c) {
+  case 'A':
+    return 0;
+  case 'B':
+    return 1;
+  case 'C':
+    return 2;
+  case 'D':
+    return 3;
+  case 'E':
+    return 4;
+  case 'F':
+    return 5;
+  case 'G':
+    return 6;
+  case 'H':
+    return 7;
+  case 'I':
+    return 8;
+  case 'J':
+    return 9;
+  case 'K':
+    return 10;
+  case 'L':
+    return 11;
+  case 'M':
+    return 12;
+  case 'N':
+    return 13;
+  case 'O':
+    return 14;
+  case 'P':
+    return 15;
+  case 'Q':
+    return 16;
+  case 'R':
+    return 17;
+  case 'S':
+    return 18;
+  case 'T':
+    return 19;
+  case 'U':
+    return 20;
+  case 'V':
+    return 21;
+  case 'W':
+    return 22;
+  case 'X':
+    return 23;
+  case 'Y':
+    return 24;
+  case 'Z':
+    return 25;
+  case 'a':
+    return 26;
+  case 'b':
+    return 27;
+  case 'c':
+    return 28;
+  case 'd':
+    return 29;
+  case 'e':
+    return 30;
+  case 'f':
+    return 31;
+  case 'g':
+    return 32;
+  case 'h':
+    return 33;
+  case 'i':
+    return 34;
+  case 'j':
+    return 35;
+  case 'k':
+    return 36;
+  case 'l':
+    return 37;
+  case 'm':
+    return 38;
+  case 'n':
+    return 39;
+  case 'o':
+    return 40;
+  case 'p':
+    return 41;
+  case 'q':
+    return 42;
+  case 'r':
+    return 43;
+  case 's':
+    return 44;
+  case 't':
+    return 45;
+  case 'u':
+    return 46;
+  case 'v':
+    return 47;
+  case 'w':
+    return 48;
+  case 'x':
+    return 49;
+  case 'y':
+    return 50;
+  case 'z':
+    return 51;
+  case '0':
+    return 52;
+  case '1':
+    return 53;
+  case '2':
+    return 54;
+  case '3':
+    return 55;
+  case '4':
+    return 56;
+  case '5':
+    return 57;
+  case '6':
+    return 58;
+  case '7':
+    return 59;
+  case '8':
+    return 60;
+  case '9':
+    return 61;
+  case '+':
+    return 62;
+  case '/':
+    return 63;
+  case '=':
+    return 64;
+  default:
+    break;
+ }
+ return -1;
+}
+
+/*
+ * base64_string_to_octet_string converts a hexadecimal string
+ * of length 2 * len to a raw octet string of length len
+ */
+
+int
+base64_string_to_octet_string(char *raw, char *base64, int len) {
+  uint8_t x;
+  int tmp;
+  int base64_len;
+
+  base64_len = 0;
+  while (base64_len < len) {
+    tmp = base64_char_to_sextet(base64[0]);
+    if (tmp == -1)
+      return base64_len;
+    x = (tmp << 6);
+    base64_len++;
+    tmp = base64_char_to_sextet(base64[1]);
+    if (tmp == -1)
+      return base64_len;
+    x |= (tmp & 0xffff);
+    base64_len++;
+    *raw++ = x;
+    base64 += 2;
+  }
+  return base64_len;
+}
diff --git a/crypto/math/gf2_8.c b/crypto/math/gf2_8.c
new file mode 100644
index 0000000..8a112ba
--- /dev/null
+++ b/crypto/math/gf2_8.c
@@ -0,0 +1,83 @@
+/*
+ * gf2_8.c
+ *
+ * GF(256) finite field implementation, with the representation used
+ * in the AES cipher.
+ * 
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "datatypes.h"
+#include "gf2_8.h"
+
+/* gf2_8_shift() moved to gf2_8.h as an inline function */
+
+inline gf2_8
+gf2_8_multiply(gf2_8 x, gf2_8 y) {
+  gf2_8 z = 0;
+
+  if (y &   1) z ^= x; x = gf2_8_shift(x);
+  if (y &   2) z ^= x; x = gf2_8_shift(x);
+  if (y &   4) z ^= x; x = gf2_8_shift(x);
+  if (y &   8) z ^= x; x = gf2_8_shift(x);
+  if (y &  16) z ^= x; x = gf2_8_shift(x);
+  if (y &  32) z ^= x; x = gf2_8_shift(x);
+  if (y &  64) z ^= x; x = gf2_8_shift(x);
+  if (y & 128) z ^= x; 
+  
+  return z;
+}
+
+
+/* this should use the euclidean algorithm */
+
+gf2_8
+gf2_8_compute_inverse(gf2_8 x) {
+  unsigned int i;
+
+  if (x == 0) return 0;    /* zero is a special case */
+  for (i=0; i < 256; i++)
+    if (gf2_8_multiply((gf2_8) i, x) == 1)
+      return (gf2_8) i;
+
+    return 0;
+}
+
diff --git a/crypto/math/math.c b/crypto/math/math.c
new file mode 100644
index 0000000..31cc3d3
--- /dev/null
+++ b/crypto/math/math.c
@@ -0,0 +1,802 @@
+/*
+ * math.c
+ *
+ * crypto math operations and data types
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "crypto_math.h"
+
+int 
+octet_weight[256] = {
+  0, 1, 1, 2, 1, 2, 2, 3,
+  1, 2, 2, 3, 2, 3, 3, 4,
+  1, 2, 2, 3, 2, 3, 3, 4,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  1, 2, 2, 3, 2, 3, 3, 4,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  1, 2, 2, 3, 2, 3, 3, 4,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  4, 5, 5, 6, 5, 6, 6, 7,
+  1, 2, 2, 3, 2, 3, 3, 4,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  4, 5, 5, 6, 5, 6, 6, 7,
+  2, 3, 3, 4, 3, 4, 4, 5,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  4, 5, 5, 6, 5, 6, 6, 7,
+  3, 4, 4, 5, 4, 5, 5, 6,
+  4, 5, 5, 6, 5, 6, 6, 7,
+  4, 5, 5, 6, 5, 6, 6, 7,
+  5, 6, 6, 7, 6, 7, 7, 8
+};
+
+int
+low_bit[256] = {
+  -1, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  4, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  5, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  4, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  6, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  4, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  5, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  4, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  7, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  4, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  5, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  4, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  6, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  4, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  5, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0,
+  4, 0, 1, 0, 2, 0, 1, 0,
+  3, 0, 1, 0, 2, 0, 1, 0
+};
+
+
+int
+high_bit[256] = {
+  -1, 0, 1, 1, 2, 2, 2, 2,
+  3, 3, 3, 3, 3, 3, 3, 3,
+  4, 4, 4, 4, 4, 4, 4, 4,
+  4, 4, 4, 4, 4, 4, 4, 4,
+  5, 5, 5, 5, 5, 5, 5, 5,
+  5, 5, 5, 5, 5, 5, 5, 5,
+  5, 5, 5, 5, 5, 5, 5, 5,
+  5, 5, 5, 5, 5, 5, 5, 5,
+  6, 6, 6, 6, 6, 6, 6, 6,
+  6, 6, 6, 6, 6, 6, 6, 6,
+  6, 6, 6, 6, 6, 6, 6, 6,
+  6, 6, 6, 6, 6, 6, 6, 6,
+  6, 6, 6, 6, 6, 6, 6, 6,
+  6, 6, 6, 6, 6, 6, 6, 6,
+  6, 6, 6, 6, 6, 6, 6, 6,
+  6, 6, 6, 6, 6, 6, 6, 6,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7,
+  7, 7, 7, 7, 7, 7, 7, 7
+};
+
+int
+octet_get_weight(uint8_t octet) {
+  extern int octet_weight[256];
+
+  return octet_weight[octet];
+}  
+
+unsigned char
+v32_weight(v32_t a) {
+  unsigned int wt = 0;
+  
+  wt += octet_weight[a.v8[0]];  /* note: endian-ness makes no difference */
+  wt += octet_weight[a.v8[1]];
+  wt += octet_weight[a.v8[2]];
+  wt += octet_weight[a.v8[3]];
+  
+  return wt;
+}
+
+inline unsigned char
+v32_distance(v32_t x, v32_t y) {
+  x.value ^= y.value;
+  return v32_weight(x);
+}
+
+unsigned int
+v32_dot_product(v32_t a, v32_t b) {
+  a.value &= b.value;
+  return v32_weight(a) & 1;
+}
+
+/*
+ * _bit_string returns a NULL-terminated character string suitable for
+ * printing
+ */
+
+#define MAX_STRING_LENGTH 1024
+
+char bit_string[MAX_STRING_LENGTH];
+
+char *
+octet_bit_string(uint8_t x) {
+  int mask, index;
+
+  for (mask = 1, index = 0; mask < 256; mask <<= 1)
+    if ((x & mask) == 0)
+      bit_string[index++] = '0';
+    else
+      bit_string[index++] = '1';
+
+  bit_string[index++] = 0;  /* NULL terminate string */
+
+  return bit_string;
+}
+
+char *
+v16_bit_string(v16_t x) {
+  int i, mask, index;
+
+  for (i = index = 0; i < 2; i++) {
+    for (mask = 1; mask < 256; mask <<= 1)
+      if ((x.v8[i] & mask) == 0)
+	bit_string[index++] = '0';
+      else
+	bit_string[index++] = '1';
+  }
+  bit_string[index++] = 0;  /* NULL terminate string */
+  return bit_string;
+}
+
+char *
+v32_bit_string(v32_t x) {
+  int i, mask, index;
+
+  for (i = index = 0; i < 4; i++) {
+    for (mask = 128; mask > 0; mask >>= 1)
+      if ((x.v8[i] & mask) == 0)
+	bit_string[index++] = '0';
+      else
+	bit_string[index++] = '1';
+  }
+  bit_string[index++] = 0;  /* NULL terminate string */
+  return bit_string;
+}
+
+char *
+v64_bit_string(const v64_t *x) {
+  int i, mask, index;
+
+  for (i = index = 0; i < 8; i++) {
+    for (mask = 1; mask < 256; mask <<= 1)
+      if ((x->v8[i] & mask) == 0)
+	bit_string[index++] = '0';
+      else
+	bit_string[index++] = '1';
+  }
+  bit_string[index++] = 0;  /* NULL terminate string */
+  return bit_string;
+}
+
+char *
+v128_bit_string(v128_t *x) {
+  int j, index;
+  uint32_t mask;
+  
+  for (j=index=0; j < 4; j++) {
+    for (mask=0x80000000; mask > 0; mask >>= 1) {
+      if (x->v32[j] & mask)
+	bit_string[index] = '1';
+      else
+	bit_string[index] = '0';
+      ++index;
+    }
+  }
+  bit_string[128] = 0; /* null terminate string */
+
+  return bit_string;
+}
+
+uint8_t
+nibble_to_hex_char(uint8_t nibble) {
+  char buf[16] = {'0', '1', '2', '3', '4', '5', '6', '7',
+		  '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
+  return buf[nibble & 0xF];
+}
+
+char *
+octet_hex_string(uint8_t x) {
+
+  bit_string[0]  = nibble_to_hex_char(x >> 4);
+  bit_string[1]  = nibble_to_hex_char(x & 0xF);
+  
+  bit_string[2] = 0; /* null terminate string */
+  return bit_string;
+}
+
+char *
+octet_string_hex_string(const void *str, int length) {
+  const uint8_t *s = str;
+  int i;
+  
+  /* double length, since one octet takes two hex characters */
+  length *= 2;
+
+  /* truncate string if it would be too long */
+  if (length > MAX_STRING_LENGTH)
+    length = MAX_STRING_LENGTH-1;
+  
+  for (i=0; i < length; i+=2) {
+    bit_string[i]   = nibble_to_hex_char(*s >> 4);
+    bit_string[i+1] = nibble_to_hex_char(*s++ & 0xF);
+  }
+  bit_string[i] = 0; /* null terminate string */
+  return bit_string;
+}
+
+char *
+v16_hex_string(v16_t x) {
+  int i, j;
+
+  for (i=j=0; i < 2; i++) {
+    bit_string[j++]  = nibble_to_hex_char(x.v8[i] >> 4);
+    bit_string[j++]  = nibble_to_hex_char(x.v8[i] & 0xF);
+  }
+  
+  bit_string[j] = 0; /* null terminate string */
+  return bit_string;
+}
+
+char *
+v32_hex_string(v32_t x) {
+  int i, j;
+
+  for (i=j=0; i < 4; i++) {
+    bit_string[j++]  = nibble_to_hex_char(x.v8[i] >> 4);
+    bit_string[j++]  = nibble_to_hex_char(x.v8[i] & 0xF);
+  }
+  
+  bit_string[j] = 0; /* null terminate string */
+  return bit_string;
+}
+
+char *
+v64_hex_string(const v64_t *x) {
+  int i, j;
+
+  for (i=j=0; i < 8; i++) {
+    bit_string[j++]  = nibble_to_hex_char(x->v8[i] >> 4);
+    bit_string[j++]  = nibble_to_hex_char(x->v8[i] & 0xF);
+  }
+  
+  bit_string[j] = 0; /* null terminate string */
+  return bit_string;
+}
+
+char *
+v128_hex_string(v128_t *x) {
+  int i, j;
+
+  for (i=j=0; i < 16; i++) {
+    bit_string[j++]  = nibble_to_hex_char(x->v8[i] >> 4);
+    bit_string[j++]  = nibble_to_hex_char(x->v8[i] & 0xF);
+  }
+  
+  bit_string[j] = 0; /* null terminate string */
+  return bit_string;
+}
+
+char *
+char_to_hex_string(char *x, int num_char) {
+  int i, j;
+
+  if (num_char >= 16)
+    num_char = 16;
+  for (i=j=0; i < num_char; i++) {
+    bit_string[j++]  = nibble_to_hex_char(x[i] >> 4);
+    bit_string[j++]  = nibble_to_hex_char(x[i] & 0xF);
+  }
+  
+  bit_string[j] = 0; /* null terminate string */
+  return bit_string;
+}
+
+int
+hex_char_to_nibble(uint8_t c) {
+  switch(c) {
+  case ('0'): return 0x0;
+  case ('1'): return 0x1;
+  case ('2'): return 0x2;
+  case ('3'): return 0x3;
+  case ('4'): return 0x4;
+  case ('5'): return 0x5;
+  case ('6'): return 0x6;
+  case ('7'): return 0x7;
+  case ('8'): return 0x8;
+  case ('9'): return 0x9;
+  case ('a'): return 0xa;
+  case ('A'): return 0xa;
+  case ('b'): return 0xb;
+  case ('B'): return 0xb;
+  case ('c'): return 0xc;
+  case ('C'): return 0xc;
+  case ('d'): return 0xd;
+  case ('D'): return 0xd;
+  case ('e'): return 0xe;
+  case ('E'): return 0xe;
+  case ('f'): return 0xf;
+  case ('F'): return 0xf;
+  default: return -1;   /* this flags an error */
+  }
+  /* NOTREACHED */
+  return -1;  /* this keeps compilers from complaining */
+}
+
+int
+is_hex_string(char *s) {
+  while(*s != 0)
+    if (hex_char_to_nibble(*s++) == -1)
+      return 0;
+  return 1;
+}
+
+uint8_t
+hex_string_to_octet(char *s) {
+  uint8_t x;
+
+  x = (hex_char_to_nibble(s[0]) << 4)
+    | hex_char_to_nibble(s[1] & 0xFF);
+  
+  return x;
+}
+
+/*
+ * hex_string_to_octet_string converts a hexadecimal string
+ * of length 2 * len to a raw octet string of length len
+ */
+
+int
+hex_string_to_octet_string(char *raw, char *hex, int len) {
+  uint8_t x;
+  int tmp;
+  int hex_len;
+
+  hex_len = 0;
+  while (hex_len < len) {
+    tmp = hex_char_to_nibble(hex[0]);
+    if (tmp == -1)
+      return hex_len;
+    x = (tmp << 4);
+    hex_len++;
+    tmp = hex_char_to_nibble(hex[1]);
+    if (tmp == -1)
+      return hex_len;
+    x |= (tmp & 0xff);
+    hex_len++;
+    *raw++ = x;
+    hex += 2;
+  }
+  return hex_len;
+}
+
+v16_t
+hex_string_to_v16(char *s) {
+  v16_t x;
+  int i, j;
+
+  for (i=j=0; i < 4; i += 2, j++) {
+    x.v8[j] = (hex_char_to_nibble(s[i]) << 4)
+      | hex_char_to_nibble(s[i+1] & 0xFF);
+  }
+  return x;
+}
+
+v32_t
+hex_string_to_v32(char *s) {
+  v32_t x;
+  int i, j;
+
+  for (i=j=0; i < 8; i += 2, j++) {
+    x.v8[j] = (hex_char_to_nibble(s[i]) << 4)
+      | hex_char_to_nibble(s[i+1] & 0xFF);
+  }
+  return x;
+}
+
+v64_t
+hex_string_to_v64(char *s) {
+  v64_t x;
+  int i, j;
+
+  for (i=j=0; i < 16; i += 2, j++) {
+    x.v8[j] = (hex_char_to_nibble(s[i]) << 4)
+      | hex_char_to_nibble(s[i+1] & 0xFF);
+  }
+  return x;
+}
+
+v128_t
+hex_string_to_v128(char *s) {
+  v128_t x;
+  int i, j;
+
+  for (i=j=0; i < 32; i += 2, j++) {
+    x.v8[j] = (hex_char_to_nibble(s[i]) << 4)
+      | hex_char_to_nibble(s[i+1] & 0xFF);
+  }
+  return x;
+}
+
+
+
+/* 
+ * the matrix A[] is stored in column format, i.e., A[i] is the ith
+ * column of the matrix 
+ */
+
+uint8_t 
+A_times_x_plus_b(uint8_t A[8], uint8_t x, uint8_t b) {
+  int index = 0;
+  unsigned mask;
+  
+  for (mask=1; mask < 256; mask *= 2) {
+    if (x & mask)
+      b^= A[index];
+    ++index;
+  }
+
+  return b;
+}
+
+inline void
+v16_copy_octet_string(v16_t *x, const uint8_t s[2]) {
+  x->v8[0]  = s[0];
+  x->v8[1]  = s[1];
+}
+
+inline void
+v32_copy_octet_string(v32_t *x, const uint8_t s[4]) {
+  x->v8[0]  = s[0];
+  x->v8[1]  = s[1];
+  x->v8[2]  = s[2];
+  x->v8[3]  = s[3];
+}
+
+inline void
+v64_copy_octet_string(v64_t *x, const uint8_t s[8]) {
+  x->v8[0]  = s[0];
+  x->v8[1]  = s[1];
+  x->v8[2]  = s[2];
+  x->v8[3]  = s[3];
+  x->v8[4]  = s[4];
+  x->v8[5]  = s[5];
+  x->v8[6]  = s[6];
+  x->v8[7]  = s[7];
+}
+
+void
+v128_copy_octet_string(v128_t *x, const uint8_t s[16]) {
+  x->v8[0]  = s[0];
+  x->v8[1]  = s[1];
+  x->v8[2]  = s[2];
+  x->v8[3]  = s[3];
+  x->v8[4]  = s[4];
+  x->v8[5]  = s[5];
+  x->v8[6]  = s[6];
+  x->v8[7]  = s[7];
+  x->v8[8]  = s[8];
+  x->v8[9]  = s[9];
+  x->v8[10] = s[10];
+  x->v8[11] = s[11];
+  x->v8[12] = s[12];
+  x->v8[13] = s[13];
+  x->v8[14] = s[14];
+  x->v8[15] = s[15];
+
+}
+
+#ifndef DATATYPES_USE_MACROS /* little functions are not macros */
+
+void
+v128_set_to_zero(v128_t *x) {
+  _v128_set_to_zero(x);
+}
+
+void
+v128_copy(v128_t *x, const v128_t *y) {
+  _v128_copy(x, y);
+}
+
+void
+v128_xor(v128_t *z, v128_t *x, v128_t *y) {
+  _v128_xor(z, x, y);
+} 
+
+void
+v128_and(v128_t *z, v128_t *x, v128_t *y) {
+  _v128_and(z, x, y);
+}
+
+void
+v128_or(v128_t *z, v128_t *x, v128_t *y) {
+  _v128_or(z, x, y);
+}
+
+void
+v128_complement(v128_t *x) {
+  _v128_complement(x);
+}
+
+int
+v128_is_eq(const v128_t *x, const v128_t *y) {
+  return _v128_is_eq(x, y);
+}
+
+int
+v128_get_bit(const v128_t *x, int i) {
+  return _v128_get_bit(x, i);
+}
+
+void
+v128_set_bit(v128_t *x, int i) {
+  _v128_set_bit(x, i);
+}     
+
+void
+v128_clear_bit(v128_t *x, int i){
+  _v128_clear_bit(x, i);
+}    
+
+void
+v128_set_bit_to(v128_t *x, int i, int y){
+  _v128_set_bit_to(x, i, y);
+}
+
+
+#endif /* DATATYPES_USE_MACROS */
+
+
+inline void
+v128_left_shift2(v128_t *x, int num_bits) {
+  int i;
+  int word_shift = num_bits >> 5;
+  int bit_shift  = num_bits & 31;
+
+  for (i=0; i < (4-word_shift); i++) {
+    x->v32[i] = x->v32[i+word_shift] << bit_shift;
+  }
+  
+  for (   ; i < word_shift; i++) {
+    x->v32[i] = 0;
+  }
+  
+}
+
+void
+v128_right_shift(v128_t *x, int index) {
+  const int base_index = index >> 5;
+  const int bit_index = index & 31;
+  int i, from;
+  uint32_t b;
+    
+  if (index > 127) {
+    v128_set_to_zero(x);
+    return;
+  }
+
+  if (bit_index == 0) {
+
+    /* copy each word from left size to right side */
+    x->v32[4-1] = x->v32[4-1-base_index];
+    for (i=4-1; i > base_index; i--) 
+      x->v32[i-1] = x->v32[i-1-base_index];
+
+  } else {
+    
+    /* set each word to the "or" of the two bit-shifted words */
+    for (i = 4; i > base_index; i--) {
+      from = i-1 - base_index;
+      b = x->v32[from] << bit_index;
+      if (from > 0)
+        b |= x->v32[from-1] >> (32-bit_index);
+      x->v32[i-1] = b;
+    }
+    
+  }
+
+  /* now wrap up the final portion */
+  for (i=0; i < base_index; i++) 
+    x->v32[i] = 0;
+  
+}
+
+void
+v128_left_shift(v128_t *x, int index) {
+  int i;
+  const int base_index = index >> 5;
+  const int bit_index = index & 31;
+
+  if (index > 127) {
+    v128_set_to_zero(x);
+    return;
+  } 
+  
+  if (bit_index == 0) {
+    for (i=0; i < 4 - base_index; i++)
+      x->v32[i] = x->v32[i+base_index];
+  } else {
+    for (i=0; i < 4 - base_index - 1; i++)
+      x->v32[i] = (x->v32[i+base_index] << bit_index) ^
+	(x->v32[i+base_index+1] >> (32 - bit_index));
+    x->v32[4 - base_index-1] = x->v32[4-1] << bit_index;
+  }
+
+  /* now wrap up the final portion */
+  for (i = 4 - base_index; i < 4; i++) 
+    x->v32[i] = 0;
+
+}
+
+
+#if 0
+void
+v128_add(v128_t *z, v128_t *x, v128_t *y) {
+  /* integer addition modulo 2^128    */
+
+#ifdef WORDS_BIGENDIAN
+  uint64_t tmp;
+    
+  tmp = x->v32[3] + y->v32[3];
+  z->v32[3] = (uint32_t) tmp;
+  
+  tmp =  x->v32[2] + y->v32[2] + (tmp >> 32);
+  z->v32[2] = (uint32_t) tmp;
+
+  tmp =  x->v32[1] + y->v32[1] + (tmp >> 32);
+  z->v32[1] = (uint32_t) tmp;
+  
+  tmp =  x->v32[0] + y->v32[0] + (tmp >> 32);
+  z->v32[0] = (uint32_t) tmp;
+
+#else /* assume little endian architecture */
+  uint64_t tmp;
+  
+  tmp = htonl(x->v32[3]) + htonl(y->v32[3]);
+  z->v32[3] = ntohl((uint32_t) tmp);
+  
+  tmp =  htonl(x->v32[2]) + htonl(y->v32[2]) + htonl(tmp >> 32);
+  z->v32[2] = ntohl((uint32_t) tmp);
+
+  tmp =  htonl(x->v32[1]) + htonl(y->v32[1]) + htonl(tmp >> 32);
+  z->v32[1] = ntohl((uint32_t) tmp);
+  
+  tmp =  htonl(x->v32[0]) + htonl(y->v32[0]) + htonl(tmp >> 32);
+  z->v32[0] = ntohl((uint32_t) tmp);
+
+#endif /* WORDS_BIGENDIAN */
+  
+}
+#endif
+
+int
+octet_string_is_eq(uint8_t *a, uint8_t *b, int len) {
+  uint8_t *end = b + len;
+  while (b < end)
+    if (*a++ != *b++)
+      return 1;
+  return 0;
+}
+
+void
+octet_string_set_to_zero(uint8_t *s, int len) {
+  uint8_t *end = s + len;
+
+  do {
+    *s = 0;
+  } while (++s < end);
+  
+}
+
+
+/* functions below not yet tested! */
+
+int
+v32_low_bit(v32_t *w) {
+  int value;
+
+  value = low_bit[w->v8[0]];
+  if (value != -1)
+    return value;
+  value = low_bit[w->v8[1]];
+  if (value != -1)
+    return value + 8;
+  value = low_bit[w->v8[2]];
+  if (value != -1)
+    return value + 16;
+  value = low_bit[w->v8[3]];
+  if (value == -1)
+    return -1;
+  return value + 24;
+}
+
+/* high_bit not done yet */
+
+
+
+
+
diff --git a/crypto/math/stat.c b/crypto/math/stat.c
new file mode 100644
index 0000000..5e46c20
--- /dev/null
+++ b/crypto/math/stat.c
@@ -0,0 +1,367 @@
+/*
+ * stats.c
+ *
+ * statistical tests for randomness (FIPS 140-2, Section 4.9)
+ * 
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+#include "stat.h"
+
+debug_module_t mod_stat = {
+  0,                 /* debugging is off by default */
+  (char *)"stat test"        /* printable module name       */
+};
+
+/*
+ * each test assumes that 20,000 bits (2500 octets) of data is
+ * provided as input
+ */
+
+#define STAT_TEST_DATA_LEN 2500
+
+err_status_t
+stat_test_monobit(uint8_t *data) {
+  uint8_t *data_end = data + STAT_TEST_DATA_LEN;
+  uint16_t ones_count;
+
+  ones_count = 0;
+  while (data < data_end) {
+    ones_count += octet_get_weight(*data);
+    data++;
+  }
+
+  debug_print(mod_stat, "bit count: %d", ones_count);
+  
+  if ((ones_count < 9725) || (ones_count > 10275))
+    return err_status_algo_fail;
+
+  return err_status_ok;
+}
+
+err_status_t
+stat_test_poker(uint8_t *data) {
+  int i;
+  uint8_t *data_end = data + STAT_TEST_DATA_LEN;
+  double poker;
+  uint16_t f[16] = {
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0
+  };
+  
+  while (data < data_end) {
+    f[*data & 0x0f]++;    /* increment freq. count for low nibble  */
+    f[(*data) >> 4]++;    /* increment freq. count for high nibble */
+    data++;
+  }
+
+  poker = 0.0;
+  for (i=0; i < 16; i++) 
+    poker += (double) f[i] * f[i];
+
+  poker *= (16.0 / 5000.0);
+  poker -= 5000.0;
+
+  debug_print(mod_stat, "poker test: %f\n", poker);
+    
+  if ((poker < 2.16) || (poker > 46.17))
+    return err_status_algo_fail;
+  
+  return err_status_ok;
+}
+
+
+/*
+ * runs[i] holds the number of runs of size (i-1)
+ */
+
+err_status_t
+stat_test_runs(uint8_t *data) {
+  uint8_t *data_end = data + STAT_TEST_DATA_LEN;
+  uint16_t runs[6] = { 0, 0, 0, 0, 0, 0 }; 
+  uint16_t gaps[6] = { 0, 0, 0, 0, 0, 0 };
+  uint16_t lo_value[6] = { 2315, 1114, 527, 240, 103, 103 };
+  uint16_t hi_value[6] = { 2685, 1386, 723, 384, 209, 209 };
+  int state = 0;
+  uint16_t mask;
+  int i;
+  
+  /*
+   * the state variable holds the number of bits in the
+   * current run (or gap, if negative)
+   */
+  
+  while (data < data_end) {
+
+    /* loop over the bits of this byte */
+    for (mask = 1; mask < 256; mask <<= 1) {
+      if (*data & mask) {
+
+ 	/* next bit is a one  */
+	if (state > 0) {
+
+	  /* prefix is a run, so increment the run-count  */
+	  state++;                          
+
+	  /* check for long runs */ 
+	  if (state > 25) {
+		debug_print(mod_stat, ">25 runs: %d", state);
+		return err_status_algo_fail;
+	  }
+
+	} else if (state < 0) {
+
+	  /* prefix is a gap  */
+	  if (state < -25) {
+		debug_print(mod_stat, ">25 gaps: %d", state);
+	    return err_status_algo_fail;    /* long-runs test failed   */
+	  }
+	  if (state < -6) {
+	    state = -6;                     /* group together gaps > 5 */
+	  }
+	  gaps[-1-state]++;                 /* increment gap count      */
+          state = 1;                        /* set state at one set bit */
+	} else {
+
+	  /* state is zero; this happens only at initialization        */
+	  state = 1;            
+	}
+      } else {
+
+	/* next bit is a zero  */
+	if (state > 0) {
+
+	  /* prefix is a run */
+	  if (state > 25) {
+		debug_print(mod_stat, ">25 runs (2): %d", state);
+	    return err_status_algo_fail;    /* long-runs test failed   */
+	  }
+	  if (state > 6) {
+	    state = 6;                      /* group together runs > 5 */
+	  }
+	  runs[state-1]++;                  /* increment run count       */
+          state = -1;                       /* set state at one zero bit */
+	} else if (state < 0) {
+
+	  /* prefix is a gap, so increment gap-count (decrement state) */
+	  state--;
+
+	  /* check for long gaps */ 
+	  if (state < -25) {
+		debug_print(mod_stat, ">25 gaps (2): %d", state);
+	    return err_status_algo_fail;
+	  }
+
+	} else {
+
+	  /* state is zero; this happens only at initialization        */
+	  state = -1;
+	}
+      }
+    }
+
+    /* move along to next octet */
+    data++;
+  }
+
+  if (mod_stat.on) {
+    debug_print(mod_stat, "runs test", NULL);
+    for (i=0; i < 6; i++)
+      debug_print(mod_stat, "  runs[]: %d", runs[i]);
+    for (i=0; i < 6; i++)
+      debug_print(mod_stat, "  gaps[]: %d", gaps[i]);
+  }
+
+  /* check run and gap counts against the fixed limits */
+  for (i=0; i < 6; i++) 
+    if (   (runs[i] < lo_value[i] ) || (runs[i] > hi_value[i])
+	|| (gaps[i] < lo_value[i] ) || (gaps[i] > hi_value[i]))
+      return err_status_algo_fail;
+
+  
+  return err_status_ok;
+}
+
+
+/*
+ * the function stat_test_rand_source applys the FIPS-140-2 statistical
+ * tests to the random source defined by rs
+ *
+ */
+
+#define RAND_SRC_BUF_OCTETS 50 /* this value MUST divide 2500! */ 
+
+err_status_t
+stat_test_rand_source(rand_source_func_t get_rand_bytes) {
+  int i;
+  double poker;
+  uint8_t *data, *data_end;
+  uint16_t f[16] = {
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0
+  };
+  uint8_t buffer[RAND_SRC_BUF_OCTETS];
+  err_status_t status;
+  int ones_count = 0;
+  uint16_t runs[6] = { 0, 0, 0, 0, 0, 0 }; 
+  uint16_t gaps[6] = { 0, 0, 0, 0, 0, 0 };
+  uint16_t lo_value[6] = { 2315, 1114, 527, 240, 103, 103 };
+  uint16_t hi_value[6] = { 2685, 1386, 723, 384, 209, 209 };
+  int state = 0;
+  uint16_t mask;
+  
+  /* counters for monobit, poker, and runs tests are initialized above */
+
+  /* main loop: fill buffer, update counters for stat tests */
+  for (i=0; i < 2500; i+=RAND_SRC_BUF_OCTETS) {
+    
+    /* fill data buffer */
+    status = get_rand_bytes(buffer, RAND_SRC_BUF_OCTETS);
+    if (status) {
+	  debug_print(mod_stat, "couldn't get rand bytes: %d",status);
+      return status;
+	}
+
+#if 0
+    debug_print(mod_stat, "%s", 
+		octet_string_hex_string(buffer, RAND_SRC_BUF_OCTETS));
+#endif
+  
+    data = buffer;
+    data_end = data + RAND_SRC_BUF_OCTETS;
+    while (data < data_end) {
+
+      /* update monobit test counter */
+      ones_count += octet_get_weight(*data);
+
+      /* update poker test counters */
+      f[*data & 0x0f]++;    /* increment freq. count for low nibble  */
+      f[(*data) >> 4]++;    /* increment freq. count for high nibble */
+
+      /* update runs test counters */
+      /* loop over the bits of this byte */
+      for (mask = 1; mask < 256; mask <<= 1) {
+	if (*data & mask) {
+	  
+	  /* next bit is a one  */
+	  if (state > 0) {
+	    
+	    /* prefix is a run, so increment the run-count  */
+	    state++;                          
+	    
+	    /* check for long runs */ 
+	    if (state > 25) {
+		  debug_print(mod_stat, ">25 runs (3): %d", state);
+	      return err_status_algo_fail;
+		}
+	    
+	  } else if (state < 0) {
+	    
+	    /* prefix is a gap  */
+	    if (state < -25) {
+		  debug_print(mod_stat, ">25 gaps (3): %d", state);
+	      return err_status_algo_fail;    /* long-runs test failed   */
+	    }
+	    if (state < -6) {
+	      state = -6;                     /* group together gaps > 5 */
+	    }
+	    gaps[-1-state]++;                 /* increment gap count      */
+	    state = 1;                        /* set state at one set bit */
+	  } else {
+	    
+	    /* state is zero; this happens only at initialization        */
+	    state = 1;            
+	  }
+	} else {
+	  
+	  /* next bit is a zero  */
+	  if (state > 0) {
+	    
+	    /* prefix is a run */
+	    if (state > 25) {
+		  debug_print(mod_stat, ">25 runs (4): %d", state);
+	      return err_status_algo_fail;    /* long-runs test failed   */
+	    }
+	    if (state > 6) {
+	      state = 6;                      /* group together runs > 5 */
+	    }
+	    runs[state-1]++;                  /* increment run count       */
+	    state = -1;                       /* set state at one zero bit */
+	  } else if (state < 0) {
+	    
+	    /* prefix is a gap, so increment gap-count (decrement state) */
+	    state--;
+	    
+	    /* check for long gaps */ 
+	    if (state < -25) {
+		  debug_print(mod_stat, ">25 gaps (4): %d", state);
+	      return err_status_algo_fail;
+		}
+	    
+	  } else {
+	    
+	    /* state is zero; this happens only at initialization        */
+	    state = -1;
+	  }
+	}
+      }
+      
+      /* advance data pointer */
+      data++;
+    }
+  }
+
+  /* check to see if test data is within bounds */
+
+  /* check monobit test data */
+
+  debug_print(mod_stat, "stat: bit count: %d", ones_count);
+  
+  if ((ones_count < 9725) || (ones_count > 10275)) {
+    debug_print(mod_stat, "stat: failed monobit test %d", ones_count);
+    return err_status_algo_fail;
+  }
+  
+  /* check poker test data */
+  poker = 0.0;
+  for (i=0; i < 16; i++) 
+    poker += (double) f[i] * f[i];
+
+  poker *= (16.0 / 5000.0);
+  poker -= 5000.0;
+
+  debug_print(mod_stat, "stat: poker test: %f", poker);
+    
+  if ((poker < 2.16) || (poker > 46.17)) {
+    debug_print(mod_stat, "stat: failed poker test", NULL);
+    return err_status_algo_fail;
+  }
+
+  /* check run and gap counts against the fixed limits */
+  for (i=0; i < 6; i++) 
+    if ((runs[i] < lo_value[i] ) || (runs[i] > hi_value[i])
+	 || (gaps[i] < lo_value[i] ) || (gaps[i] > hi_value[i])) {
+      debug_print(mod_stat, "stat: failed run/gap test", NULL);
+      return err_status_algo_fail; 
+    }
+
+  debug_print(mod_stat, "passed random stat test", NULL);
+  return err_status_ok;
+}
+
+err_status_t
+stat_test_rand_source_with_repetition(rand_source_func_t source, unsigned num_trials) {
+  unsigned int i;
+  err_status_t err = err_status_algo_fail;
+
+  for (i=0; i < num_trials; i++) {
+    err = stat_test_rand_source(source);
+    if (err == err_status_ok) {
+      return err_status_ok;  
+    }
+    debug_print(mod_stat, "failed stat test (try number %d)\n", i);
+  }
+  
+  return err;
+}
diff --git a/crypto/replay/rdb.c b/crypto/replay/rdb.c
new file mode 100644
index 0000000..215f2ab
--- /dev/null
+++ b/crypto/replay/rdb.c
@@ -0,0 +1,137 @@
+/*
+ * rdb.c
+ *
+ * Implements a replay database for packet security
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "rdb.h"
+
+
+/*
+ * this implementation of a replay database works as follows:
+ * 
+ * window_start is the index of the first packet in the window
+ * bitmask      a bit-buffer, containing the most recently entered
+ *              index as the leftmost bit 
+ *
+ */
+
+/* rdb_init initalizes rdb */
+
+err_status_t
+rdb_init(rdb_t *rdb) {
+  v128_set_to_zero(&rdb->bitmask);
+  rdb->window_start = 0;
+  return err_status_ok;
+}
+
+/*
+ * rdb_check checks to see if index appears in rdb
+ */
+
+err_status_t
+rdb_check(const rdb_t *rdb, uint32_t index) {
+  
+  /* if the index appears after (or at very end of) the window, its good */
+  if (index >= rdb->window_start + rdb_bits_in_bitmask)
+    return err_status_ok;
+  
+  /* if the index appears before the window, its bad */
+  if (index < rdb->window_start)
+    return err_status_replay_old;
+
+  /* otherwise, the index appears within the window, so check the bitmask */
+  if (v128_get_bit(&rdb->bitmask, (index - rdb->window_start)) == 1)
+    return err_status_replay_fail;    
+      
+  /* otherwise, the index is okay */
+  return err_status_ok;
+}
+
+/*
+ * rdb_add_index adds index to rdb_t (and does *not* check if
+ * index appears in db)
+ *
+ * this function should be called only after rdb_check has
+ * indicated that the index does not appear in the rdb, e.g., a mutex
+ * should protect the rdb between these calls
+ */
+
+err_status_t
+rdb_add_index(rdb_t *rdb, uint32_t index) {
+  int delta;  
+
+  /* here we *assume* that index > rdb->window_start */
+
+  delta = (index - rdb->window_start);    
+  if (delta < rdb_bits_in_bitmask) {
+
+    /* if the index is within the window, set the appropriate bit */
+    v128_set_bit(&rdb->bitmask, delta);
+
+  } else { 
+    
+    delta -= rdb_bits_in_bitmask - 1;
+
+    /* shift the window forward by delta bits*/
+    v128_left_shift(&rdb->bitmask, delta);
+    v128_set_bit(&rdb->bitmask, rdb_bits_in_bitmask - 1);
+    rdb->window_start += delta;
+
+  }    
+
+  return err_status_ok;
+}
+
+err_status_t
+rdb_increment(rdb_t *rdb) {
+
+  if (rdb->window_start++ > 0x7fffffff)
+    return err_status_key_expired;
+  return err_status_ok;
+}
+
+uint32_t
+rdb_get_value(const rdb_t *rdb) {
+  return rdb->window_start;
+}
diff --git a/crypto/replay/rdbx.c b/crypto/replay/rdbx.c
new file mode 100644
index 0000000..633d0ba
--- /dev/null
+++ b/crypto/replay/rdbx.c
@@ -0,0 +1,361 @@
+/*
+ * rdbx.c
+ *
+ * a replay database with extended range, using a rollover counter
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "rdbx.h"
+
+
+/*
+ * from draft-ietf-avt-srtp-00.txt:
+ *
+ * A receiver reconstructs the index i of a packet with sequence
+ *  number s using the estimate
+ *
+ * i = 65,536 * t + s,
+ *
+ * where t is chosen from the set { r-1, r, r+1 } such that i is
+ * closest to the value 65,536 * r + s_l.  If the value r+1 is used,
+ * then the rollover counter r in the cryptographic context is
+ * incremented by one (if the packet containing s is authentic).
+ */
+
+
+
+/*
+ * rdbx implementation notes
+ *
+ * A xtd_seq_num_t is essentially a sequence number for which some of
+ * the data on the wire are implicit.  It logically consists of a
+ * rollover counter and a sequence number; the sequence number is the
+ * explicit part, and the rollover counter is the implicit part.
+ *
+ * Upon receiving a sequence_number (e.g. in a newly received SRTP
+ * packet), the complete xtd_seq_num_t can be estimated by using a
+ * local xtd_seq_num_t as a basis.  This is done using the function
+ * index_guess(&local, &guess, seq_from_packet).  This function
+ * returns the difference of the guess and the local value.  The local
+ * xtd_seq_num_t can be moved forward to the guess using the function
+ * index_advance(&guess, delta), where delta is the difference.
+ * 
+ *
+ * A rdbx_t consists of a xtd_seq_num_t and a bitmask.  The index is highest
+ * sequence number that has been received, and the bitmask indicates
+ * which of the recent indicies have been received as well.  The
+ * highest bit in the bitmask corresponds to the index in the bitmask.
+ */
+
+
+void
+index_init(xtd_seq_num_t *pi) {
+#ifdef NO_64BIT_MATH
+  *pi = make64(0,0);
+#else
+  *pi = 0;
+#endif
+}
+
+void
+index_advance(xtd_seq_num_t *pi, sequence_number_t s) {
+#ifdef NO_64BIT_MATH
+  /* a > ~b means a+b will generate a carry */
+  /* s is uint16 here */
+  *pi = make64(high32(*pi) + (s > ~low32(*pi) ? 1 : 0),low32(*pi) + s);
+#else
+  *pi += s;
+#endif
+}
+
+
+/*
+ * index_guess(local, guess, s)
+ * 
+ * given a xtd_seq_num_t local (which represents the last
+ * known-to-be-good received xtd_seq_num_t) and a sequence number s
+ * (from a newly arrived packet), sets the contents of *guess to
+ * contain the best guess of the packet index to which s corresponds,
+ * and returns the difference between *guess and *local
+ *
+ * nota bene - the output is a signed integer, DON'T cast it to a
+ * unsigned integer!  
+ */
+
+int
+index_guess(const xtd_seq_num_t *local,
+		   xtd_seq_num_t *guess,
+		   sequence_number_t s) {
+#ifdef NO_64BIT_MATH
+  uint32_t local_roc = ((high32(*local) << 16) |
+						(low32(*local) >> 16));
+  uint16_t local_seq = (uint16_t) (low32(*local));
+#else
+  uint32_t local_roc = (uint32_t)(*local >> 16);
+  uint16_t local_seq = (uint16_t) *local;
+#endif
+#ifdef NO_64BIT_MATH
+  uint32_t guess_roc = ((high32(*guess) << 16) |
+						(low32(*guess) >> 16));
+  uint16_t guess_seq = (uint16_t) (low32(*guess));
+#else
+  uint32_t guess_roc = (uint32_t)(*guess >> 16);
+  uint16_t guess_seq = (uint16_t) *guess;  
+#endif
+  int difference;
+  
+  if (local_seq < seq_num_median) {
+    if (s - local_seq > seq_num_median) {
+      guess_roc = local_roc - 1;
+      // The return value is the relative difference from local_seq to s.
+      // The original value is negation of its purpose.  According to document
+      // http://www.ietf.org/rfc/rfc3711.txt, when this condition is true, the
+      // resulting new index should be (local_roc-1, s).  But original logic
+      // will end up positive difference and rdbx_check would pass.  Hence after
+      // rdbx_add_index would make local index to be the wrong value because
+      // local index should not be updated in this case.  For example, when
+      // local index is (1, 100) and next sequence is 65530, the wrong updated
+      // index would be (1, 205).
+      difference = s - local_seq - seq_num_max;
+    } else {
+      guess_roc = local_roc;
+      difference = s - local_seq;
+    }
+  } else {
+    if (local_seq - seq_num_median > s) {
+      guess_roc = local_roc+1;
+      difference = seq_num_max - local_seq + s;
+    } else {
+      difference = s - local_seq;
+      guess_roc = local_roc;
+    }
+  }
+  guess_seq = s;
+  
+  /* Note: guess_roc is 32 bits, so this generates a 48-bit result! */
+#ifdef NO_64BIT_MATH
+  *guess = make64(guess_roc >> 16,
+				  (guess_roc << 16) | guess_seq);
+#else
+  *guess = (((uint64_t) guess_roc) << 16) | guess_seq;
+#endif
+
+  return difference;
+}
+
+/*
+ * rdbx
+ *
+ */
+
+
+/*
+ *  rdbx_init(&r, ws) initializes the rdbx_t pointed to by r with window size ws
+ */
+
+err_status_t
+rdbx_init(rdbx_t *rdbx, unsigned long ws) {
+  if (ws == 0)
+    return err_status_bad_param;
+
+  if (bitvector_alloc(&rdbx->bitmask, ws) != 0)
+    return err_status_alloc_fail;
+
+  index_init(&rdbx->index);
+
+  return err_status_ok;
+}
+
+/*
+ *  rdbx_uninit(&r) uninitializes the rdbx_t pointed to by r
+ */
+
+err_status_t
+rdbx_uninit(rdbx_t *rdbx) {
+  bitvector_dealloc(&rdbx->bitmask);
+
+  return err_status_ok;
+}
+
+/*
+ * rdbx_set_roc(rdbx, roc) initalizes the rdbx_t at the location rdbx
+ * to have the rollover counter value roc.  If that value is less than
+ * the current rollover counter value, then the function returns
+ * err_status_replay_old; otherwise, err_status_ok is returned.
+ * 
+ */
+
+err_status_t
+rdbx_set_roc(rdbx_t *rdbx, uint32_t roc) {
+  bitvector_set_to_zero(&rdbx->bitmask);
+
+#ifdef NO_64BIT_MATH
+  #error not yet implemented
+#else
+
+  /* make sure that we're not moving backwards */
+  if (roc < (rdbx->index >> 16))
+    return err_status_replay_old;
+
+  rdbx->index &= 0xffff;   /* retain lowest 16 bits */
+  rdbx->index |= ((uint64_t)roc) << 16;  /* set ROC */
+#endif
+
+  return err_status_ok;
+}
+
+/*
+ * rdbx_get_packet_index(rdbx) returns the value of the packet index
+ * for the rdbx_t pointed to by rdbx
+ * 
+ */
+
+xtd_seq_num_t
+rdbx_get_packet_index(const rdbx_t *rdbx) {
+  return rdbx->index;   
+}
+
+/*
+ * rdbx_get_window_size(rdbx) returns the value of the window size
+ * for the rdbx_t pointed to by rdbx
+ * 
+ */
+
+unsigned long
+rdbx_get_window_size(const rdbx_t *rdbx) {
+  return bitvector_get_length(&rdbx->bitmask);
+}
+
+/*
+ * rdbx_check(&r, delta) checks to see if the xtd_seq_num_t
+ * which is at rdbx->index + delta is in the rdb
+ */
+
+err_status_t
+rdbx_check(const rdbx_t *rdbx, int delta) {
+  
+  if (delta > 0) {       /* if delta is positive, it's good */
+    return err_status_ok;
+  } else if ((int)(bitvector_get_length(&rdbx->bitmask) - 1) + delta < 0) {   
+                         /* if delta is lower than the bitmask, it's bad */
+    return err_status_replay_old; 
+  } else if (bitvector_get_bit(&rdbx->bitmask, 
+			  (int)(bitvector_get_length(&rdbx->bitmask) - 1) + delta) == 1) {
+                         /* delta is within the window, so check the bitmask */
+    return err_status_replay_fail;    
+  }
+ /* otherwise, the index is okay */
+
+  return err_status_ok; 
+}
+
+/*
+ * rdbx_add_index adds the xtd_seq_num_t at rdbx->window_start + d to
+ * replay_db (and does *not* check if that xtd_seq_num_t appears in db)
+ *
+ * this function should be called only after replay_check has
+ * indicated that the index does not appear in the rdbx, e.g., a mutex
+ * should protect the rdbx between these calls if need be
+ */
+
+err_status_t
+rdbx_add_index(rdbx_t *rdbx, int delta) {
+  
+  if (delta > 0) {
+    /* shift forward by delta */
+    index_advance(&rdbx->index, delta);
+    bitvector_left_shift(&rdbx->bitmask, delta);
+    bitvector_set_bit(&rdbx->bitmask, bitvector_get_length(&rdbx->bitmask) - 1);
+  } else {
+    /* delta is in window, so flip bit in bitmask */
+    bitvector_set_bit(&rdbx->bitmask, -delta);
+  }
+
+  /* note that we need not consider the case that delta == 0 */
+  
+  return err_status_ok;
+}
+
+
+
+/*
+ * rdbx_estimate_index(rdbx, guess, s)
+ * 
+ * given an rdbx and a sequence number s (from a newly arrived packet),
+ * sets the contents of *guess to contain the best guess of the packet
+ * index to which s corresponds, and returns the difference between
+ * *guess and the locally stored synch info
+ */
+
+int
+rdbx_estimate_index(const rdbx_t *rdbx,
+		    xtd_seq_num_t *guess,
+		    sequence_number_t s) {
+
+  /*
+   * if the sequence number and rollover counter in the rdbx are
+   * non-zero, then use the index_guess(...) function, otherwise, just
+   * set the rollover counter to zero (since the index_guess(...)
+   * function might incorrectly guess that the rollover counter is
+   * 0xffffffff)
+   */
+
+#ifdef NO_64BIT_MATH
+  /* seq_num_median = 0x8000 */
+  if (high32(rdbx->index) > 0 ||
+	  low32(rdbx->index) > seq_num_median)
+#else
+  if (rdbx->index > seq_num_median)
+#endif
+    return index_guess(&rdbx->index, guess, s);
+  
+#ifdef NO_64BIT_MATH
+  *guess = make64(0,(uint32_t) s);
+#else  
+  *guess = s;
+#endif
+
+#ifdef NO_64BIT_MATH
+  return s - (uint16_t) low32(rdbx->index);
+#else
+  return s - (uint16_t) rdbx->index;
+#endif
+}
diff --git a/crypto/replay/ut_sim.c b/crypto/replay/ut_sim.c
new file mode 100644
index 0000000..43c411e
--- /dev/null
+++ b/crypto/replay/ut_sim.c
@@ -0,0 +1,105 @@
+/*
+ * ut_sim.c
+ *
+ * an unreliable transport simulator
+ * (for testing replay databases and suchlike)
+ * 
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "ut_sim.h"
+
+
+int
+ut_compar(const void *a, const void *b) {
+  return rand() > (RAND_MAX/2) ? -1 : 1;
+}
+
+void
+ut_init(ut_connection *utc) {
+  int i;
+  utc->index = 0;
+
+  for (i=0; i < UT_BUF; i++)
+    utc->buffer[i] = i;
+  
+  qsort(utc->buffer, UT_BUF, sizeof(uint32_t), ut_compar);
+
+  utc->index = UT_BUF - 1;
+}
+
+uint32_t
+ut_next_index(ut_connection *utc) {
+  uint32_t tmp;
+
+  tmp = utc->buffer[0];
+  utc->index++;
+  utc->buffer[0] = utc->index;
+
+  qsort(utc->buffer, UT_BUF, sizeof(uint32_t), ut_compar);
+  
+  return tmp;
+}
+
+
+
+#ifdef UT_TEST
+
+#include <stdio.h>
+
+int
+main() {
+  uint32_t i, irecvd, idiff;
+  ut_connection utc;
+
+  ut_init(&utc);
+
+  for (i=0; i < 1000; i++) {
+    irecvd = ut_next_index(&utc);
+    idiff = i - irecvd;
+    printf("%lu\t%lu\t%d\n", i, irecvd, idiff);
+  }
+  
+  return 0;
+}
+
+
+#endif
diff --git a/crypto/rng/ctr_prng.c b/crypto/rng/ctr_prng.c
new file mode 100644
index 0000000..ab76df3
--- /dev/null
+++ b/crypto/rng/ctr_prng.c
@@ -0,0 +1,108 @@
+/*
+ * ctr_prng.c 
+ *
+ * counter mode based pseudorandom source
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright(c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "prng.h"
+
+/* single, global prng structure */
+
+ctr_prng_t ctr_prng;
+
+err_status_t
+ctr_prng_init(rand_source_func_t random_source) {
+  uint8_t tmp_key[32];
+  err_status_t status;
+
+  /* initialize output count to zero */
+  ctr_prng.octet_count = 0;
+
+  /* set random source */
+  ctr_prng.rand = random_source;
+  
+  /* initialize secret key from random source */
+  status = random_source(tmp_key, 32);
+  if (status) 
+    return status;
+
+  /* initialize aes ctr context with random key */
+  status = aes_icm_context_init(&ctr_prng.state, tmp_key);
+  if (status) 
+    return status;
+
+  return err_status_ok;
+}
+
+err_status_t
+ctr_prng_get_octet_string(void *dest, uint32_t len) {
+  err_status_t status;
+
+  /* 
+   * if we need to re-initialize the prng, do so now 
+   *
+   * avoid 32-bit overflows by subtracting instead of adding
+   */
+  if (ctr_prng.octet_count > MAX_PRNG_OUT_LEN - len) {
+    status = ctr_prng_init(ctr_prng.rand);    
+    if (status)
+      return status;
+  }
+  ctr_prng.octet_count += len;
+
+  /*
+   * write prng output 
+   */
+  status = aes_icm_output(&ctr_prng.state, (uint8_t*)dest, len);
+  if (status)
+    return status;
+  
+  return err_status_ok;
+}
+
+err_status_t
+ctr_prng_deinit(void) {
+
+  /* nothing */
+  
+  return err_status_ok;  
+}
diff --git a/crypto/rng/prng.c b/crypto/rng/prng.c
new file mode 100644
index 0000000..69350a4
--- /dev/null
+++ b/crypto/rng/prng.c
@@ -0,0 +1,180 @@
+/*
+ * prng.c 
+ *
+ * pseudorandom source
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright(c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "prng.h"
+
+/* single, global prng structure */
+
+x917_prng_t x917_prng;
+
+err_status_t
+x917_prng_init(rand_source_func_t random_source) {
+  v128_t tmp_key;
+  err_status_t status;
+
+  /* initialize output count to zero */
+  x917_prng.octet_count = 0;
+
+  /* set random source */
+  x917_prng.rand = random_source;
+  
+  /* initialize secret key from random source */
+  status = random_source((uint8_t *)&tmp_key, 16);
+  if (status) 
+    return status;
+
+  /* expand aes key */
+  aes_expand_encryption_key(&tmp_key, x917_prng.key);
+
+  /* initialize prng state from random source */
+  status = x917_prng.rand((uint8_t *)&x917_prng.state, 16);
+  if (status) 
+    return status;
+
+  return err_status_ok;
+}
+
+err_status_t
+x917_prng_get_octet_string(uint8_t *dest, uint32_t len) {
+  uint32_t t;
+  v128_t buffer;
+  uint32_t i, tail_len;
+  err_status_t status;
+
+  /* 
+   * if we need to re-initialize the prng, do so now 
+   *
+   * avoid overflows by subtracting instead of adding
+   */
+  if (x917_prng.octet_count > MAX_PRNG_OUT_LEN - len) {
+    status = x917_prng_init(x917_prng.rand);    
+    if (status)
+      return status;
+  }
+  x917_prng.octet_count += len;
+  
+  /* find out the time */
+  t = (uint32_t)time(NULL);
+  
+  /* loop until we have output enough data */
+  for (i=0; i < len/16; i++) {
+    
+    /* exor time into state */
+    x917_prng.state.v32[0] ^= t; 
+ 
+    /* copy state into buffer */
+    v128_copy(&buffer, &x917_prng.state);
+
+    /* apply aes to buffer */
+    aes_encrypt(&buffer, x917_prng.key);
+    
+    /* write data to output */
+    *dest++ = buffer.v8[0];
+    *dest++ = buffer.v8[1];
+    *dest++ = buffer.v8[2];
+    *dest++ = buffer.v8[3];
+    *dest++ = buffer.v8[4];
+    *dest++ = buffer.v8[5];
+    *dest++ = buffer.v8[6];
+    *dest++ = buffer.v8[7];
+    *dest++ = buffer.v8[8];
+    *dest++ = buffer.v8[9];
+    *dest++ = buffer.v8[10];
+    *dest++ = buffer.v8[11];
+    *dest++ = buffer.v8[12];
+    *dest++ = buffer.v8[13];
+    *dest++ = buffer.v8[14];
+    *dest++ = buffer.v8[15];
+
+    /* exor time into buffer */
+    buffer.v32[0] ^= t;
+
+    /* encrypt buffer */
+    aes_encrypt(&buffer, x917_prng.key);
+
+    /* copy buffer into state */
+    v128_copy(&x917_prng.state, &buffer);
+    
+  }
+  
+  /* if we need to output any more octets, we'll do so now */
+  tail_len = len % 16;
+  if (tail_len) {
+    
+    /* exor time into state */
+    x917_prng.state.v32[0] ^= t; 
+ 
+    /* copy value into buffer */
+    v128_copy(&buffer, &x917_prng.state);
+
+    /* apply aes to buffer */
+    aes_encrypt(&buffer, x917_prng.key);
+
+    /* write data to output */
+    for (i=0; i < tail_len; i++) {
+      *dest++ = buffer.v8[i];
+    }
+
+    /* now update the state one more time */
+
+    /* exor time into buffer */
+    buffer.v32[0] ^= t;
+
+    /* encrypt buffer */
+    aes_encrypt(&buffer, x917_prng.key);
+
+    /* copy buffer into state */
+    v128_copy(&x917_prng.state, &buffer);
+
+  }
+  
+  return err_status_ok;
+}
+
+err_status_t
+x917_prng_deinit(void) {
+  
+  return err_status_ok;  
+}
diff --git a/crypto/rng/rand_linux_kernel.c b/crypto/rng/rand_linux_kernel.c
new file mode 100644
index 0000000..c51978e
--- /dev/null
+++ b/crypto/rng/rand_linux_kernel.c
@@ -0,0 +1,65 @@
+/*
+ * rand_linux_kernel.c
+ *
+ * implements a random source using Linux kernel functions
+ *
+ * Marcus Sundberg
+ * Ingate Systems AB
+ */
+/*
+ *	
+ * Copyright(c) 2005 Ingate Systems AB
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the author(s) nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "config.h"
+#include "rand_source.h"
+
+
+err_status_t
+rand_source_init(void) {
+  return err_status_ok;
+}
+
+err_status_t
+rand_source_get_octet_string(void *dest, uint32_t len) {
+
+  get_random_bytes(dest, len);
+
+  return err_status_ok;
+}
+
+err_status_t
+rand_source_deinit(void) {
+  return err_status_ok;  
+}
diff --git a/crypto/rng/rand_source.c b/crypto/rng/rand_source.c
new file mode 100644
index 0000000..6f844c5
--- /dev/null
+++ b/crypto/rng/rand_source.c
@@ -0,0 +1,151 @@
+/*
+ * rand_source.c
+ *
+ * implements a random source based on /dev/random
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright(c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "config.h"
+
+#ifdef DEV_URANDOM
+# include <fcntl.h>          /* for open()  */
+# include <unistd.h>         /* for close() */
+#elif defined(HAVE_RAND_S)
+# define _CRT_RAND_S
+# include <stdlib.h>         
+#else
+# include <stdio.h>
+#endif
+
+#include "rand_source.h"
+
+
+/* 
+ * global dev_rand_fdes is file descriptor for /dev/random 
+ * 
+ * This variable is also used to indicate that the random source has
+ * been initialized.  When this variable is set to the value of the
+ * #define RAND_SOURCE_NOT_READY, it indicates that the random source
+ * is not ready to be used.  The value of the #define
+ * RAND_SOURCE_READY is for use whenever that variable is used as an
+ * indicator of the state of the random source, but not as a file
+ * descriptor.
+ */
+
+#define RAND_SOURCE_NOT_READY (-1)
+#define RAND_SOURCE_READY     (17)
+
+static int dev_random_fdes = RAND_SOURCE_NOT_READY;
+
+
+err_status_t
+rand_source_init(void) {
+  if (dev_random_fdes >= 0) {
+    /* already open */
+    return err_status_ok;
+  }
+#ifdef DEV_URANDOM
+  /* open random source for reading */
+  dev_random_fdes = open(DEV_URANDOM, O_RDONLY);
+  if (dev_random_fdes < 0)
+    return err_status_init_fail;
+#elif defined(HAVE_RAND_S)
+  dev_random_fdes = RAND_SOURCE_READY;
+#else
+  /* no random source available; let the user know */
+  fprintf(stderr, "WARNING: no real random source present!\n");
+  dev_random_fdes = RAND_SOURCE_READY;
+#endif
+  return err_status_ok;
+}
+
+err_status_t
+rand_source_get_octet_string(void *dest, uint32_t len) {
+
+  /* 
+   * read len octets from /dev/random to dest, and
+   * check return value to make sure enough octets were
+   * written 
+   */
+#ifdef DEV_URANDOM
+  if (read(dev_random_fdes, dest, len) != len)
+    return err_status_fail;
+#elif defined(HAVE_RAND_S)
+  uint8_t *dst = (uint8_t *)dest;
+  while (len)
+  {
+    unsigned int val;
+    errno_t err = rand_s(&val);
+
+    if (err != 0)
+      return err_status_fail;
+  
+    *dst++ = val & 0xff;
+    len--;
+  }
+#else
+  /* Generic C-library (rand()) version */
+  /* This is a random source of last resort */
+  uint8_t *dst = (uint8_t *)dest;
+  while (len)
+  {
+	  int val = rand();
+	  /* rand() returns 0-32767 (ugh) */
+	  /* Is this a good enough way to get random bytes?
+	     It is if it passes FIPS-140... */
+	  *dst++ = val & 0xff;
+	  len--;
+  }
+#endif
+  return err_status_ok;
+}
+ 
+err_status_t
+rand_source_deinit(void) {
+  if (dev_random_fdes < 0)
+    return err_status_dealloc_fail;  /* well, we haven't really failed, *
+				      * but there is something wrong    */
+#ifdef DEV_URANDOM
+  close(dev_random_fdes);  
+#endif
+  dev_random_fdes = RAND_SOURCE_NOT_READY;
+  
+  return err_status_ok;  
+}
diff --git a/crypto/test/aes_calc.c b/crypto/test/aes_calc.c
new file mode 100644
index 0000000..2fac07a
--- /dev/null
+++ b/crypto/test/aes_calc.c
@@ -0,0 +1,111 @@
+/*
+ * aes_calc.c
+ * 
+ * A simple AES calculator for generating AES encryption values
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+  
+ Example usage (with first NIST FIPS 197 test case):
+ 
+[sh]$ test/aes_calc 000102030405060708090a0b0c0d0e0f 00112233445566778899aabbccddeeff -v
+ plaintext:      00112233445566778899aabbccddeeff
+ key:            000102030405060708090a0b0c0d0e0f
+ ciphertext:     69c4e0d86a7b0430d8cdb78070b4c55a
+
+ */
+
+#include "aes.h"
+#include <stdio.h>
+#include <string.h>
+
+void
+usage(char *prog_name) {
+  printf("usage: %s <key> <plaintext> [-v]\n", prog_name);
+  exit(255);
+}
+
+#define AES_KEY_LEN 16
+
+int
+main (int argc, char *argv[]) {
+  v128_t data, key;
+  aes_expanded_key_t exp_key;
+  int len;
+  int verbose;
+
+  if (argc == 3) {
+    /* we're not in verbose mode */
+    verbose = 0;
+  } else if (argc == 4) {
+    if (strncmp(argv[3], "-v", 2) == 0) {
+      /* we're in verbose mode */
+      verbose = 1;
+    } else {
+      /* unrecognized flag, complain and exit */
+      usage(argv[0]);
+    }
+  } else {
+    /* we've been fed the wrong number of arguments - compain and exit */
+    usage(argv[0]);
+  }
+  
+  /* read in key, checking length */
+  if (strlen(argv[1]) > AES_KEY_LEN*2) {
+    fprintf(stderr, 
+	    "error: too many digits in key "
+	    "(should be %d hexadecimal digits, found %u)\n",
+	    AES_KEY_LEN*2, (unsigned)strlen(argv[1]));
+    exit(1);    
+  }
+  len = hex_string_to_octet_string((char *)&key, argv[1], AES_KEY_LEN*2);
+  /* check that hex string is the right length */
+  if (len < AES_KEY_LEN*2) {
+    fprintf(stderr, 
+	    "error: too few digits in key "
+	    "(should be %d hexadecimal digits, found %d)\n",
+	    AES_KEY_LEN*2, len);
+    exit(1);    
+  } 
+      
+  /* read in plaintext, checking length */
+  if (strlen(argv[2]) > 16*2) {
+    fprintf(stderr, 
+	    "error: too many digits in plaintext "
+	    "(should be %d hexadecimal digits, found %u)\n",
+	    16*2, (unsigned)strlen(argv[2]));
+    exit(1);    
+  }
+  len = hex_string_to_octet_string((char *)(&data), argv[2], 16*2);
+  /* check that hex string is the right length */
+  if (len < 16*2) {
+    fprintf(stderr, 
+	    "error: too few digits in plaintext "
+	    "(should be %d hexadecimal digits, found %d)\n",
+	    16*2, len);
+    exit(1);    
+  }
+
+  if (verbose) {
+    /* print out plaintext */
+    printf("plaintext:\t%s\n", octet_string_hex_string((uint8_t *)&data, 16));
+  }
+
+  /* encrypt plaintext */
+  aes_expand_encryption_key(&key, exp_key);
+
+  aes_encrypt(&data, exp_key);
+
+  /* write ciphertext to output */
+  if (verbose) {
+    printf("key:\t\t%s\n", v128_hex_string(&key));
+    printf("ciphertext:\t");
+  }
+  printf("%s\n", v128_hex_string(&data));
+
+  return 0;
+}
+
diff --git a/crypto/test/auth_driver.c b/crypto/test/auth_driver.c
new file mode 100644
index 0000000..cd8a75d
--- /dev/null
+++ b/crypto/test/auth_driver.c
@@ -0,0 +1,200 @@
+/*
+ * auth_driver.c
+ *
+ * a driver for auth functions
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include <stdio.h>    /* for printf() */
+#include <stdlib.h>   /* for xalloc() */
+#include <unistd.h>   /* for getopt() */
+
+#include "auth.h"
+#include "null_auth.h"
+
+#define PRINT_DEBUG_DATA 0
+
+extern auth_type_t tmmhv2;
+
+const uint16_t msg0[9] = {
+  0x6015, 0xf141, 0x5ba1, 0x29a0, 0xf604, 0xd1c, 0x2d9, 0xaa8a, 0x7931
+};
+
+/* key1 is for TAG_WORDS = 2 */
+
+const uint16_t key1[47] = {
+  0xe627, 0x6a01, 0x5ea7, 0xf27a, 0xc536, 0x2192, 0x11be, 0xea35,
+  0xdb9d, 0x63d6, 0xfa8a, 0xfc45, 0xe08b, 0xd216, 0xced2, 0x7853,
+  0x1a82, 0x22f5, 0x90fb, 0x1c29, 0x708e, 0xd06f, 0x82c3, 0xbee6,
+  0x4f21, 0x6f33, 0x65c0, 0xd211, 0xc25e, 0x9138, 0x4fa3, 0x7c1f,
+  0x61ac, 0x3489, 0x2976, 0x8c19, 0x8252, 0xddbf, 0xcad3, 0xc28f,
+  0x68d6, 0x58dd, 0x504f, 0x2bbf, 0x0278, 0x70b7, 0xcfca
+};
+
+double
+auth_bits_per_second(auth_t *h, int msg_len);
+
+
+void
+usage(char *prog_name) {
+  printf("usage: %s [ -t | -v ]\n", prog_name);
+  exit(255);
+}
+
+#define MAX_MSG_LEN 2048
+
+int
+main (int argc, char *argv[]) {
+  auth_t *a = NULL;
+  err_status_t status;
+  int i;
+  int c;
+  unsigned do_timing_test = 0;
+  unsigned do_validation = 0;
+
+  /* process input arguments */
+  while (1) {
+    c = getopt(argc, argv, "tv");
+    if (c == -1) 
+      break;
+    switch (c) {
+    case 't':
+      do_timing_test = 1;
+      break;
+    case 'v':
+      do_validation = 1;
+      break;
+    default:
+      usage(argv[0]);
+    }    
+  }
+  
+  printf("auth driver\nDavid A. McGrew\nCisco Systems, Inc.\n");
+
+  if (!do_validation && !do_timing_test)
+    usage(argv[0]);
+
+  if (do_validation) {
+    printf("running self-test for %s...", tmmhv2.description);
+    status = tmmhv2_add_big_test();
+    if (status) {
+      printf("tmmhv2_add_big_test failed with error code %d\n", status);
+      exit(status);
+    }  
+    status = auth_type_self_test(&tmmhv2);
+    if (status) {
+      printf("failed with error code %d\n", status);
+      exit(status);
+    }
+    printf("passed\n");
+  }
+
+  if (do_timing_test) {
+
+    /* tmmhv2 timing test */
+    status = auth_type_alloc(&tmmhv2, &a, 94, 4);
+    if (status) {
+      fprintf(stderr, "can't allocate tmmhv2\n");
+      exit(status);
+    }
+    status = auth_init(a, (uint8_t *)key1);
+    if (status) {
+      printf("error initializaing auth function\n");
+      exit(status);
+    }
+    
+    printf("timing %s (tag length %d)\n", 
+	   tmmhv2.description, auth_get_tag_length(a));
+    for (i=8; i <= MAX_MSG_LEN; i *= 2)
+      printf("msg len: %d\tgigabits per second: %f\n",
+	     i, auth_bits_per_second(a, i) / 1E9);
+
+    status = auth_dealloc(a);
+    if (status) {
+      printf("error deallocating auth function\n");
+      exit(status);
+    }
+    
+  }
+
+  return 0;
+}
+
+#define NUM_TRIALS 100000
+
+#include <time.h>
+
+double
+auth_bits_per_second(auth_t *a, int msg_len_octets) {
+  int i;
+  clock_t timer;
+  uint8_t *result;
+  int msg_len = (msg_len_octets + 1)/2;
+  uint16_t *msg_string; 
+
+  /* create random message */
+  msg_string = (uint16_t *) crypto_alloc(msg_len_octets);
+  if (msg_string == NULL)
+    return 0.0; /* indicate failure */  
+  for (i=0; i < msg_len; i++) 
+    msg_string[i] = (uint16_t) random();
+
+  /* allocate temporary storage for authentication tag */
+  result = crypto_alloc(auth_get_tag_length(a));
+  if (result == NULL) {
+    free(msg_string);
+    return 0.0; /* indicate failure */  
+  }
+  
+  timer = clock();
+  for (i=0; i < NUM_TRIALS; i++) {
+    auth_compute(a, (uint8_t *)msg_string, msg_len_octets, (uint8_t *)result);
+  }
+  timer = clock() - timer;
+
+  free(msg_string);
+  free(result);
+  
+  return (double) NUM_TRIALS * 8 * msg_len_octets * CLOCKS_PER_SEC / timer;
+}
+
+
diff --git a/crypto/test/cipher_driver.c b/crypto/test/cipher_driver.c
new file mode 100644
index 0000000..25ca90a
--- /dev/null
+++ b/crypto/test/cipher_driver.c
@@ -0,0 +1,491 @@
+/*
+ * cipher_driver.c
+ *
+ * A driver for the generic cipher type
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>           /* for printf() */
+#include <stdlib.h>          /* for rand() */
+#include <string.h>          /* for memset() */
+#include <unistd.h>          /* for getopt() */
+#include "cipher.h"
+#include "aes_icm.h"
+#include "null_cipher.h"
+
+#define PRINT_DEBUG 0
+
+void
+cipher_driver_test_throughput(cipher_t *c);
+
+err_status_t
+cipher_driver_self_test(cipher_type_t *ct);
+
+
+/*
+ * cipher_driver_test_buffering(ct) tests the cipher's output
+ * buffering for correctness by checking the consistency of succesive
+ * calls
+ */
+
+err_status_t
+cipher_driver_test_buffering(cipher_t *c);
+
+
+/*
+ * functions for testing cipher cache thrash
+ */
+err_status_t
+cipher_driver_test_array_throughput(cipher_type_t *ct, 
+				    int klen, int num_cipher);
+
+void
+cipher_array_test_throughput(cipher_t *ca[], int num_cipher);
+
+uint64_t
+cipher_array_bits_per_second(cipher_t *cipher_array[], int num_cipher, 
+			     unsigned octets_in_buffer, int num_trials);
+
+err_status_t
+cipher_array_delete(cipher_t *cipher_array[], int num_cipher);
+
+err_status_t
+cipher_array_alloc_init(cipher_t ***cipher_array, int num_ciphers,
+			cipher_type_t *ctype, int klen);
+
+void
+usage(char *prog_name) {
+  printf("usage: %s [ -t | -v | -a ]\n", prog_name);
+  exit(255);
+}
+
+void
+check_status(err_status_t s) {
+  if (s) {
+    printf("error (code %d)\n", s);
+    exit(s);
+  }
+  return;
+}
+
+/*
+ * null_cipher, aes_icm, and aes_cbc are the cipher meta-objects
+ * defined in the files in crypto/cipher subdirectory.  these are
+ * declared external so that we can use these cipher types here
+ */
+
+extern cipher_type_t null_cipher;
+extern cipher_type_t aes_icm;
+extern cipher_type_t aes_cbc;
+
+int
+main(int argc, char *argv[]) {
+  cipher_t *c = NULL;
+  err_status_t status;
+  unsigned char test_key[20] = {
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+    0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+    0x10, 0x11, 0x12, 0x13
+  };
+  int q;
+  unsigned do_timing_test = 0;
+  unsigned do_validation = 0;
+  unsigned do_array_timing_test = 0;
+
+  /* process input arguments */
+  while (1) {
+    q = getopt(argc, argv, "tva");
+    if (q == -1) 
+      break;
+    switch (q) {
+    case 't':
+      do_timing_test = 1;
+      break;
+    case 'v':
+      do_validation = 1;
+      break;
+    case 'a':
+      do_array_timing_test = 1;
+      break;
+    default:
+      usage(argv[0]);
+    }    
+  }
+   
+  printf("cipher test driver\n"
+	 "David A. McGrew\n"
+	 "Cisco Systems, Inc.\n");
+
+  if (!do_validation && !do_timing_test && !do_array_timing_test)
+    usage(argv[0]);
+
+   /* arry timing (cache thrash) test */
+  if (do_array_timing_test) {
+    int max_num_cipher = 1 << 16;   /* number of ciphers in cipher_array */
+    int num_cipher;
+    
+    for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8)
+      cipher_driver_test_array_throughput(&null_cipher, 0, num_cipher); 
+
+    for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8)
+      cipher_driver_test_array_throughput(&aes_icm, 30, num_cipher); 
+
+    for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8)
+      cipher_driver_test_array_throughput(&aes_cbc, 16, num_cipher); 
+ 
+  }
+
+  if (do_validation) {
+    cipher_driver_self_test(&null_cipher);
+    cipher_driver_self_test(&aes_icm);
+    cipher_driver_self_test(&aes_cbc);
+  }
+
+  /* do timing and/or buffer_test on null_cipher */
+  status = cipher_type_alloc(&null_cipher, &c, 0); 
+  check_status(status);
+
+  status = cipher_init(c, NULL, direction_encrypt);
+  check_status(status);
+
+  if (do_timing_test) 
+    cipher_driver_test_throughput(c);
+  if (do_validation) {
+    status = cipher_driver_test_buffering(c);
+    check_status(status);
+  }
+  status = cipher_dealloc(c);
+  check_status(status);
+  
+
+  /* run the throughput test on the aes_icm cipher */
+    status = cipher_type_alloc(&aes_icm, &c, 30);  
+    if (status) {
+      fprintf(stderr, "error: can't allocate cipher\n");
+      exit(status);
+    }
+
+    status = cipher_init(c, test_key, direction_encrypt);
+    check_status(status);
+
+    if (do_timing_test)
+      cipher_driver_test_throughput(c);
+    
+    if (do_validation) {
+      status = cipher_driver_test_buffering(c);
+      check_status(status);
+    }
+    
+    status = cipher_dealloc(c);
+    check_status(status);
+  
+  return 0;
+}
+
+void
+cipher_driver_test_throughput(cipher_t *c) {
+  int i;
+  int min_enc_len = 32;     
+  int max_enc_len = 2048;   /* should be a power of two */
+  int num_trials = 100000;  
+  
+  printf("timing %s throughput:\n", c->type->description);
+  fflush(stdout);
+  for (i=min_enc_len; i <= max_enc_len; i = i * 2)
+    printf("msg len: %d\tgigabits per second: %f\n",
+	   i, cipher_bits_per_second(c, i, num_trials) / 1e9);
+
+}
+
+err_status_t
+cipher_driver_self_test(cipher_type_t *ct) {
+  err_status_t status;
+  
+  printf("running cipher self-test for %s...", ct->description);
+  status = cipher_type_self_test(ct);
+  if (status) {
+    printf("failed with error code %d\n", status);
+    exit(status);
+  }
+  printf("passed\n");
+  
+  return err_status_ok;
+}
+
+/*
+ * cipher_driver_test_buffering(ct) tests the cipher's output
+ * buffering for correctness by checking the consistency of succesive
+ * calls
+ */
+
+err_status_t
+cipher_driver_test_buffering(cipher_t *c) {
+  int i, j, num_trials = 1000;
+  unsigned len, buflen = 1024;
+  uint8_t buffer0[buflen], buffer1[buflen], *current, *end;
+  uint8_t idx[16] = { 
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0x34
+  };
+  err_status_t status;
+  
+  printf("testing output buffering for cipher %s...",
+	 c->type->description);
+
+  for (i=0; i < num_trials; i++) {
+
+   /* set buffers to zero */
+    for (j=0; j < buflen; j++) 
+      buffer0[j] = buffer1[j] = 0;
+    
+    /* initialize cipher  */
+    status = cipher_set_iv(c, idx);
+    if (status)
+      return status;
+
+    /* generate 'reference' value by encrypting all at once */
+    status = cipher_encrypt(c, buffer0, &buflen);
+    if (status)
+      return status;
+
+    /* re-initialize cipher */
+    status = cipher_set_iv(c, idx);
+    if (status)
+      return status;
+    
+    /* now loop over short lengths until buffer1 is encrypted */
+    current = buffer1;
+    end = buffer1 + buflen;
+    while (current < end) {
+
+      /* choose a short length */
+      len = rand() & 0x01f;
+
+      /* make sure that len doesn't cause us to overreach the buffer */
+      if (current + len > end)
+	len = end - current;
+
+      status = cipher_encrypt(c, current, &len);
+      if (status) 
+	return status;
+      
+      /* advance pointer into buffer1 to reflect encryption */
+      current += len;
+      
+      /* if buffer1 is all encrypted, break out of loop */
+      if (current == end)
+	break;
+    }
+
+    /* compare buffers */
+    for (j=0; j < buflen; j++)
+      if (buffer0[j] != buffer1[j]) {
+#if PRINT_DEBUG
+	printf("test case %d failed at byte %d\n", i, j);
+	printf("computed: %s\n", octet_string_hex_string(buffer1, buflen));
+	printf("expected: %s\n", octet_string_hex_string(buffer0, buflen));
+#endif 
+	return err_status_algo_fail;
+      }
+  }
+  
+  printf("passed\n");
+
+  return err_status_ok;
+}
+
+
+/*
+ * The function cipher_test_throughput_array() tests the effect of CPU
+ * cache thrash on cipher throughput.  
+ *
+ * cipher_array_alloc_init(ctype, array, num_ciphers) creates an array
+ * of cipher_t of type ctype
+ */
+
+err_status_t
+cipher_array_alloc_init(cipher_t ***ca, int num_ciphers,
+			cipher_type_t *ctype, int klen) {
+  int i, j;
+  err_status_t status;
+  uint8_t *key;
+  cipher_t **cipher_array;
+
+  /* allocate array of pointers to ciphers */
+  cipher_array = (cipher_t **) malloc(sizeof(cipher_t *) * num_ciphers);
+  if (cipher_array == NULL)
+    return err_status_alloc_fail;
+
+  /* set ca to location of cipher_array */
+  *ca = cipher_array;
+
+  /* allocate key */
+  key = crypto_alloc(klen);
+  if (key == NULL) {
+    free(cipher_array);
+    return err_status_alloc_fail;
+  }
+  
+  /* allocate and initialize an array of ciphers */
+  for (i=0; i < num_ciphers; i++) {
+
+    /* allocate cipher */
+    status = cipher_type_alloc(ctype, cipher_array, klen);
+    if (status)
+      return status;
+    
+    /* generate random key and initialize cipher */
+    for (j=0; j < klen; j++)
+      key[j] = (uint8_t) rand();
+    status = cipher_init(*cipher_array, key, direction_encrypt);
+    if (status)
+      return status;
+
+/*     printf("%dth cipher is at %p\n", i, *cipher_array); */
+/*     printf("%dth cipher description: %s\n", i,  */
+/* 	   (*cipher_array)->type->description); */
+    
+    /* advance cipher array pointer */
+    cipher_array++;
+  }
+
+  return err_status_ok;
+}
+
+err_status_t
+cipher_array_delete(cipher_t *cipher_array[], int num_cipher) {
+  int i;
+  
+  for (i=0; i < num_cipher; i++) {
+    cipher_dealloc(cipher_array[i]);
+  }
+
+  free(cipher_array);
+  
+  return err_status_ok;
+}
+
+
+/*
+ * cipher_array_bits_per_second(c, l, t) computes (an estimate of) the
+ * number of bits that a cipher implementation can encrypt in a second
+ * when distinct keys are used to encrypt distinct messages
+ * 
+ * c is a cipher (which MUST be allocated an initialized already), l
+ * is the length in octets of the test data to be encrypted, and t is
+ * the number of trials
+ *
+ * if an error is encountered, the value 0 is returned
+ */
+
+uint64_t
+cipher_array_bits_per_second(cipher_t *cipher_array[], int num_cipher, 
+			      unsigned octets_in_buffer, int num_trials) {
+  int i;
+  v128_t nonce;
+  clock_t timer;
+  unsigned char *enc_buf;
+  int cipher_index = 0;
+
+
+  enc_buf = crypto_alloc(octets_in_buffer);
+  if (enc_buf == NULL)
+    return 0;  /* indicate bad parameters by returning null */
+  
+  /* time repeated trials */
+  v128_set_to_zero(&nonce);
+  timer = clock();
+  for(i=0; i < num_trials; i++, nonce.v32[3] = i) {
+
+    /* choose a cipher at random from the array*/
+    cipher_index = (*((uint32_t *)enc_buf)) % num_cipher;
+
+    /* encrypt buffer with cipher */
+    cipher_set_iv(cipher_array[cipher_index], &nonce);
+    cipher_encrypt(cipher_array[cipher_index], enc_buf, &octets_in_buffer);
+  }
+  timer = clock() - timer;
+
+  free(enc_buf);
+
+  if (timer == 0) {
+    /* Too fast! */
+    return 0;
+  }
+
+  return CLOCKS_PER_SEC * num_trials * 8 * octets_in_buffer / timer;
+}
+
+void
+cipher_array_test_throughput(cipher_t *ca[], int num_cipher) {
+  int i;
+  int min_enc_len = 16;     
+  int max_enc_len = 2048;   /* should be a power of two */
+  int num_trials = 10000;
+
+  printf("timing %s throughput with array size %d:\n", 
+	 (ca[0])->type->description, num_cipher);
+  fflush(stdout);
+  for (i=min_enc_len; i <= max_enc_len; i = i * 4)
+    printf("msg len: %d\tgigabits per second: %f\n", i,
+	   cipher_array_bits_per_second(ca, num_cipher, i, num_trials) / 1e9);
+
+}
+
+err_status_t
+cipher_driver_test_array_throughput(cipher_type_t *ct, 
+				    int klen, int num_cipher) {
+  cipher_t **ca = NULL;
+  err_status_t status;
+
+  status = cipher_array_alloc_init(&ca, num_cipher, ct, klen);
+  if (status) {
+    printf("error: cipher_array_alloc_init() failed with error code %d\n",
+	   status);
+    return status;
+  }
+  
+  cipher_array_test_throughput(ca, num_cipher);
+  
+  cipher_array_delete(ca, num_cipher);    
+ 
+  return err_status_ok;
+}
diff --git a/crypto/test/datatypes_driver.c b/crypto/test/datatypes_driver.c
new file mode 100644
index 0000000..f186652
--- /dev/null
+++ b/crypto/test/datatypes_driver.c
@@ -0,0 +1,237 @@
+/*
+ * datatypes_driver.c
+ *
+ * a test driver for crypto/math datatypes
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include <stdio.h>            /* for printf() */
+#include <string.h>           /* for strlen() */
+#include "datatypes.h"
+
+void
+byte_order(void);
+
+void
+test_hex_string_funcs(void);
+
+void
+print_string(char *s);
+
+void
+test_bswap(void);
+
+int
+main (void) {
+  
+  /*
+   * this program includes various and sundry tests for fundamental
+   * datatypes.  it's a grab-bag of throwaway code, retained only in
+   * case of future problems
+   */
+
+  int i, j;
+  v128_t x;
+  char *r = 
+    "The Moving Finger writes; and, having writ,\n"
+    "Moves on: nor all thy Piety nor Wit\n"
+    "Shall lure it back to cancel half a Line,\n"
+    "Nor all thy Tears wash out a Word of it.";
+  char *s = "incomplet"; 
+ 
+  print_string(r);
+  print_string(s);
+ 
+  byte_order();
+  test_hex_string_funcs();
+
+  for (j=0; j < 128; j++) {
+    v128_set_to_zero(&x);
+    /*      x.v32[0] = (1 << j); */
+    v128_set_bit(&x, j);
+    printf("%s\n", v128_bit_string(&x)); 
+    v128_clear_bit(&x, j);
+    printf("%s\n", v128_bit_string(&x)); 
+    
+  }
+
+  printf("----------------------------------------------\n");
+  v128_set_to_zero(&x);
+  for (i=0; i < 128; i++) {
+    v128_set_bit(&x, i);
+  }
+  printf("%s\n", v128_bit_string(&x)); 
+
+  printf("----------------------------------------------\n");
+  v128_set_to_zero(&x);
+  v128_set_bit(&x, 0);
+  for (i=0; i < 128; i++) {
+      printf("%s\n", v128_bit_string(&x)); 
+    v128_right_shift(&x, 1);
+  }
+  printf("----------------------------------------------\n");
+  v128_set_to_zero(&x);
+  v128_set_bit(&x, 127);
+  for (i=0; i < 128; i++) {
+      printf("%s\n", v128_bit_string(&x)); 
+    v128_left_shift(&x, 1);
+  }
+  printf("----------------------------------------------\n");
+  for (i=0; i < 128; i++) {
+    v128_set_to_zero(&x);
+    v128_set_bit(&x, 127);
+    v128_left_shift(&x, i);
+      printf("%s\n", v128_bit_string(&x)); 
+  }
+  printf("----------------------------------------------\n");
+  v128_set_to_zero(&x);
+  for (i=0; i < 128; i+=2) {
+    v128_set_bit(&x, i);
+  }
+  printf("bit_string: { %s }\n", v128_bit_string(&x)); 
+  printf("get_bit:    { ");   
+  for (i=0; i < 128; i++) {
+    if (v128_get_bit(&x, i) == 1)
+      printf("1");
+    else
+      printf("0");
+  }
+  printf(" } \n");
+
+  test_bswap();
+
+  return 0;
+}
+
+
+/* byte_order() prints out byte ordering of datatypes */
+
+void
+byte_order(void) {
+  int i;
+  v128_t e;
+#if 0
+  v16_t b;
+  v32_t c;
+  v64_t d;
+
+  for (i=0; i < sizeof(b); i++)
+    b.octet[i] = i;
+  for (i=0; i < sizeof(c); i++)
+    c.octet[i] = i;
+  for (i=0; i < sizeof(d); i++)
+    d.octet[i] = i;
+  
+  printf("v128_t:\t%s\n", v128_hex_string(&e));
+  printf("v64_t:\t%s\n", v64_hex_string(&d));
+  printf("v32_t:\t%s\n", v32_hex_string(c));
+  printf("v16_t:\t%s\n", v16_hex_string(b));
+
+  c.value = 0x01020304;
+  printf("v32_t:\t%s\n", v32_hex_string(c));
+  b.value = 0x0102;
+  printf("v16_t:\t%s\n", v16_hex_string(b));
+
+  printf("uint16_t ordering:\n");
+
+  c.value = 0x00010002;
+  printf("v32_t:\t%x%x\n", c.v16[0], c.v16[1]);
+#endif 
+
+  printf("byte ordering of crypto/math datatypes:\n");
+  for (i=0; i < sizeof(e); i++)
+    e.v8[i] = i;
+  printf("v128_t: %s\n", v128_hex_string(&e));
+  
+}
+
+void
+test_hex_string_funcs(void) {
+  char hex1[] = "abadcafe";
+  char hex2[] = "0123456789abcdefqqqqq";
+  char raw[10];
+  int len;
+
+  len = hex_string_to_octet_string(raw, hex1, strlen(hex1));
+  printf("computed length: %d\tstring: %s\n", len,
+	 octet_string_hex_string(raw, len/2));
+  printf("expected length: %u\tstring: %s\n", (unsigned)strlen(hex1), hex1);
+
+  len = hex_string_to_octet_string(raw, hex2, strlen(hex2));
+  printf("computed length: %d\tstring: %s\n", len,
+	 octet_string_hex_string(raw, len/2));
+  printf("expected length: %d\tstring: %s\n", 16, "0123456789abcdef");
+
+}
+
+void
+print_string(char *s) {
+  int i;  
+  printf("%s\n", s);
+  printf("strlen(s) = %u\n", (unsigned)strlen(s));
+  printf("{ ");
+  for (i=0; i < strlen(s); i++) {
+    printf("0x%x, ", s[i]);
+    if (((i+1) % 8) == 0)
+      printf("\n   ");
+  }
+  printf("}\n");
+}
+
+void
+test_bswap(void) {
+  uint32_t x = 0x11223344;
+  uint64_t y = 0x1122334455667788LL;
+
+  printf("before: %0x\nafter:  %0x\n", x, be32_to_cpu(x));
+  printf("before: %0llx\nafter:  %0llx\n", (unsigned long long)y,
+	 (unsigned long long)be64_to_cpu(y));
+
+  y = 1234;
+
+  printf("1234: %0llx\n", (unsigned long long)y);
+  printf("as octet string: %s\n", 
+	 octet_string_hex_string((uint8_t *) &y, 8));
+  y = be64_to_cpu(y);
+  printf("bswapped octet string: %s\n", 
+	 octet_string_hex_string((uint8_t *) &y, 8));
+}
diff --git a/crypto/test/env.c b/crypto/test/env.c
new file mode 100644
index 0000000..37a6e27
--- /dev/null
+++ b/crypto/test/env.c
@@ -0,0 +1,99 @@
+/*
+ * env.c
+ *
+ * prints out a brief report on the build environment
+ *
+ * David McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>     /* for srtcmp() */
+#include "config.h"
+
+int 
+main(void) {
+  int err_count = 0;
+  char *str;
+
+#ifdef WORDS_BIGENDIAN
+  printf("CPU set to big-endian\t\t\t(WORDS_BIGENDIAN == 1)\n");
+#else
+  printf("CPU set to little-endian\t\t(WORDS_BIGENDIAN == 0)\n");
+#endif
+
+#ifdef CPU_RISC
+  printf("CPU set to RISC\t\t\t\t(CPU_RISC == 1)\n");
+#elif defined(CPU_CISC)
+  printf("CPU set to CISC\t\t\t\t(CPU_CISC == 1)\n");
+#else
+  printf("CPU set to an unknown type, probably due to a configuration error\n");
+  err_count++;
+#endif
+
+#ifdef CPU_ALTIVEC
+  printf("CPU set to ALTIVEC\t\t\t\t(CPU_ALTIVEC == 0)\n");
+#endif
+
+#ifndef NO_64BIT_MATH
+  printf("using native 64-bit type\t\t(NO_64_BIT_MATH == 0)\n");
+#else
+  printf("using built-in 64-bit math\t\t(NO_64_BIT_MATH == 1)\n");
+#endif
+
+#ifdef ERR_REPORTING_STDOUT
+  printf("using stdout for error reporting\t(ERR_REPORTING_STDOUT == 1)\n");
+#endif
+
+#ifdef DEV_URANDOM
+  str = DEV_URANDOM;
+#else
+  str = "";
+#endif
+  printf("using %s as a random source\t(DEV_URANDOM == %s)\n",
+	 str, str);
+  if (strcmp("", str) == 0) {
+    err_count++;
+  }
+  
+  if (err_count)
+    printf("warning: configuration is probably in error "
+	   "(found %d problems)\n", err_count);
+
+  return err_count;
+}
diff --git a/crypto/test/kernel_driver.c b/crypto/test/kernel_driver.c
new file mode 100644
index 0000000..8ef8a5f
--- /dev/null
+++ b/crypto/test/kernel_driver.c
@@ -0,0 +1,126 @@
+/*
+ * kernel_driver.c
+ *
+ * a test driver for the crypto_kernel
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright(c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include <stdio.h>           /* for printf() */
+#include <unistd.h>          /* for getopt() */
+#include "crypto_kernel.h"
+
+void
+usage(char *prog_name) {
+  printf("usage: %s [ -v ][ -d debug_module ]*\n", prog_name);
+  exit(255);
+}
+
+int
+main (int argc, char *argv[]) {
+  extern char *optarg;
+  int q;
+  int do_validation      = 0;
+  err_status_t status;
+
+  if (argc == 1)
+    usage(argv[0]);
+
+  /* initialize kernel - we need to do this before anything else */ 
+  status = crypto_kernel_init();
+  if (status) {
+    printf("error: crypto_kernel init failed\n");
+    exit(1);
+  }
+  printf("crypto_kernel successfully initalized\n");
+
+  /* process input arguments */
+  while (1) {
+    q = getopt(argc, argv, "vd:");
+    if (q == -1) 
+      break;
+    switch (q) {
+    case 'v':
+      do_validation = 1;
+      break;
+    case 'd':
+      status = crypto_kernel_set_debug_module(optarg, 1);
+      if (status) {
+	printf("error: set debug module (%s) failed\n", optarg);
+	exit(1);
+      }
+      break;
+    default:
+      usage(argv[0]);
+    }    
+  }
+
+  if (do_validation) {
+    printf("checking crypto_kernel status...\n");
+    status = crypto_kernel_status();
+    if (status) {
+      printf("failed\n");
+      exit(1);
+    }
+    printf("crypto_kernel passed self-tests\n");
+  }
+
+  status = crypto_kernel_shutdown();
+  if (status) {
+    printf("error: crypto_kernel shutdown failed\n");
+    exit(1);
+  }
+  printf("crypto_kernel successfully shut down\n");
+  
+  return 0;
+}
+
+/*
+ * crypto_kernel_cipher_test() is a test of the cipher interface
+ * of the crypto_kernel
+ */
+
+err_status_t
+crypto_kernel_cipher_test(void) {
+
+  /* not implemented yet! */
+
+  return err_status_ok;
+}
diff --git a/crypto/test/rand_gen.c b/crypto/test/rand_gen.c
new file mode 100644
index 0000000..ccea097
--- /dev/null
+++ b/crypto/test/rand_gen.c
@@ -0,0 +1,140 @@
+/*
+ * rand_gen.c
+ *
+ * a random source (random number generator)
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright(c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include <stdio.h>           /* for printf() */
+#include <unistd.h>          /* for getopt() */
+#include "crypto_kernel.h"
+
+/*
+ * MAX_PRINT_STRING_LEN is defined in datatypes.h, and is the length
+ * of the largest hexadecimal string that can be generated by the
+ * function octet_string_hex_string().
+ */
+
+#define BUF_LEN (MAX_PRINT_STRING_LEN/2)
+
+void
+usage(char *prog_name) {
+  printf("usage: %s -n <num_bytes> [-l][ -d debug_module ]*\n"
+	 "   -n <num>   output <num> random bytes, where <num>"
+	 " is between zero and %d\n"
+	 "   -l         list the avaliable debug modules\n"
+	 "   -d <mod>   turn on debugging module <mod>\n", 
+	 prog_name, BUF_LEN);
+  exit(255);
+}
+
+int
+main (int argc, char *argv[]) {
+  extern char *optarg;
+  int q;
+  int num_octets = 0;
+  unsigned do_list_mods = 0;
+  err_status_t status;
+
+  if (argc == 1)
+    usage(argv[0]);
+
+  /* initialize kernel - we need to do this before anything else */ 
+  status = crypto_kernel_init();
+  if (status) {
+    printf("error: crypto_kernel init failed\n");
+    exit(1);
+  }
+
+  /* process input arguments */
+  while (1) {
+    q = getopt(argc, argv, "ld:n:");
+    if (q == -1) 
+      break;
+    switch (q) {
+    case 'd':
+      status = crypto_kernel_set_debug_module(optarg, 1);
+      if (status) {
+	printf("error: set debug module (%s) failed\n", optarg);
+	exit(1);
+      }
+      break;
+    case 'l':
+      do_list_mods = 1;
+      break;
+    case 'n':
+      num_octets = atoi(optarg);
+      if (num_octets < 0 || num_octets > BUF_LEN)
+	usage(argv[0]);
+      break;
+    default:
+      usage(argv[0]);
+    }    
+  }
+
+  if (do_list_mods) {
+    status = crypto_kernel_list_debug_modules();
+    if (status) {
+      printf("error: list of debug modules failed\n");
+      exit(1);
+    }
+  }
+
+  if (num_octets > 0) {
+    uint8_t buffer[BUF_LEN];
+    
+    status = crypto_get_random(buffer, num_octets);
+    if (status) {
+      printf("error: failure in random source\n");
+    } else {
+      printf("%s\n", octet_string_hex_string(buffer, num_octets));
+    }
+  }
+
+  status = crypto_kernel_shutdown();
+  if (status) {
+    printf("error: crypto_kernel shutdown failed\n");
+    exit(1);
+  }
+  
+  return 0;
+}
+
diff --git a/crypto/test/sha1_driver.c b/crypto/test/sha1_driver.c
new file mode 100644
index 0000000..f7cb6ca
--- /dev/null
+++ b/crypto/test/sha1_driver.c
@@ -0,0 +1,533 @@
+/*
+ * sha1_driver.c
+ *
+ * a test driver for SHA-1
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>
+#include "sha1.h"
+
+#define SHA_PASS 0
+#define SHA_FAIL 1
+
+#define MAX_HASH_DATA_LEN 1024
+#define MAX_HASH_OUT_LEN   20
+
+typedef struct hash_test_case_t {
+  unsigned data_len;                 /* number of octets in data        */
+  unsigned hash_len;                 /* number of octets output by hash */
+  uint8_t data[MAX_HASH_DATA_LEN];   /* message data                    */            
+  uint8_t hash[MAX_HASH_OUT_LEN];    /* expected hash output            */  
+  struct hash_test_case_t *next_test_case;
+} hash_test_case_t;
+
+hash_test_case_t *sha1_test_case_list;
+
+err_status_t
+hash_test_case_add(hash_test_case_t **list_ptr, 
+		   char *hex_data, 
+		   unsigned data_len, 
+		   char *hex_hash, 
+		   unsigned hash_len) {
+  hash_test_case_t *list_head = *list_ptr;
+  hash_test_case_t *test_case;
+  unsigned tmp_len;
+
+  test_case = malloc(sizeof(hash_test_case_t));
+  if (test_case == NULL)
+    return err_status_alloc_fail;
+  
+  tmp_len = hex_string_to_octet_string((char *)test_case->data, hex_data, data_len*2);
+  if (tmp_len != data_len*2)
+    return err_status_parse_err;
+
+  tmp_len = hex_string_to_octet_string((char *)test_case->hash, hex_hash, hash_len*2);
+  if (tmp_len != hash_len*2)
+    return err_status_parse_err;
+
+  test_case->data_len = data_len;
+  test_case->hash_len = hash_len;
+
+  /* add the new test case to the head of the list */
+  test_case->next_test_case = list_head;
+  *list_ptr = test_case;
+
+  return err_status_ok;
+}
+
+err_status_t
+sha1_test_case_validate(const hash_test_case_t *test_case) {
+  sha1_ctx_t ctx;
+  uint32_t hash_value[5];
+
+  if (test_case == NULL)
+    return err_status_bad_param;
+
+  if (test_case->hash_len != 20)
+    return err_status_bad_param;
+  if (test_case->data_len > MAX_HASH_DATA_LEN)
+    return err_status_bad_param;
+
+  sha1_init(&ctx);
+  sha1_update(&ctx, test_case->data, test_case->data_len);
+  sha1_final(&ctx, hash_value);
+  if (0 == memcmp(test_case->hash, hash_value, 20)) {
+#if VERBOSE
+    printf("PASSED: reference value: %s\n", 
+	   octet_string_hex_string((uint8_t *)test_case->hash, 20));
+    printf("PASSED: computed value:  %s\n", 
+	   octet_string_hex_string((uint8_t *)hash_value, 20));   
+#endif 
+    return err_status_ok;
+  }
+
+  printf("reference value: %s\n", 
+	 octet_string_hex_string((uint8_t *)test_case->hash, 20));
+  printf("computed value:  %s\n", 
+	 octet_string_hex_string((uint8_t *)hash_value, 20));
+
+  return err_status_algo_fail;
+  
+}
+
+struct hex_sha1_test_case_t {
+  unsigned bit_len;
+  char hex_data[MAX_HASH_DATA_LEN*2];
+  char hex_hash[40];
+};
+
+err_status_t
+sha1_add_test_cases() {
+  int i;
+  err_status_t err;
+
+  /*
+   * these test cases are taken from the "SHA-1 Sample Vectors"
+   * provided by NIST at http://csrc.nist.gov/cryptval/shs.html
+   */
+
+  struct hex_sha1_test_case_t tc[] = {
+    { 
+      0,
+      "",
+      "da39a3ee5e6b4b0d3255bfef95601890afd80709"
+    },
+    {
+      8,
+      "a8",
+      "99f2aa95e36f95c2acb0eaf23998f030638f3f15"
+    }, 
+    {
+      16, 
+      "3000",
+      "f944dcd635f9801f7ac90a407fbc479964dec024"
+    }, 
+    {
+      24, 
+      "42749e", 
+      "a444319e9b6cc1e8464c511ec0969c37d6bb2619"
+    }, 
+    {
+      32, 
+      "9fc3fe08", 
+      "16a0ff84fcc156fd5d3ca3a744f20a232d172253"
+    }, 
+    {
+      40, 
+      "b5c1c6f1af",
+      "fec9deebfcdedaf66dda525e1be43597a73a1f93"
+    },
+    {
+      48, 
+      "e47571e5022e",
+      "8ce051181f0ed5e9d0c498f6bc4caf448d20deb5"
+    }, 
+    {
+      56, 
+      "3e1b28839fb758",
+      "67da53837d89e03bf652ef09c369a3415937cfd3"
+    },
+    {
+      64, 
+      "a81350cbb224cb90",
+      "305e4ff9888ad855a78573cddf4c5640cce7e946"
+    }, 
+    {
+      72, "c243d167923dec3ce1",
+      "5902b77b3265f023f9bbc396ba1a93fa3509bde7"
+    },
+    {
+      80, 
+      "50ac18c59d6a37a29bf4",
+      "fcade5f5d156bf6f9af97bdfa9c19bccfb4ff6ab"
+    }, 
+    {
+      88, 
+      "98e2b611ad3b1cccf634f6",
+      "1d20fbe00533c10e3cbd6b27088a5de0c632c4b5"
+    },
+    {
+      96, 
+      "73fe9afb68e1e8712e5d4eec",
+      "7e1b7e0f7a8f3455a9c03e9580fd63ae205a2d93"
+    }, 
+    {
+      104, 
+      "9e701ed7d412a9226a2a130e66",
+      "706f0677146307b20bb0e8d6311e329966884d13"
+    }, 
+    {
+      112, 
+      "6d3ee90413b0a7cbf69e5e6144ca",
+      "a7241a703aaf0d53fe142f86bf2e849251fa8dff"
+    }, 
+    {
+      120, 
+      "fae24d56514efcb530fd4802f5e71f",
+      "400f53546916d33ad01a5e6df66822dfbdc4e9e6"
+    }, 
+    {
+      128, 
+      "c5a22dd6eda3fe2bdc4ddb3ce6b35fd1",
+      "fac8ab93c1ae6c16f0311872b984f729dc928ccd"
+    }, 
+    {
+      136, 
+      "d98cded2adabf08fda356445c781802d95",
+      "fba6d750c18da58f6e2aab10112b9a5ef3301b3b"
+    }, 
+    {
+      144, 
+      "bcc6d7087a84f00103ccb32e5f5487a751a2",
+      "29d27c2d44c205c8107f0351b05753ac708226b6"
+    }, 
+    {
+      152, 
+      "36ecacb1055434190dbbc556c48bafcb0feb0d",
+      "b971bfc1ebd6f359e8d74cb7ecfe7f898d0ba845"
+    }, 
+    {
+      160, 
+      "5ff9edb69e8f6bbd498eb4537580b7fba7ad31d0",
+      "96d08c430094b9fcc164ad2fb6f72d0a24268f68"
+    },
+    {
+      168, "c95b441d8270822a46a798fae5defcf7b26abace36",
+      "a287ea752a593d5209e287881a09c49fa3f0beb1"
+    }, 
+    {
+      176, 
+      "83104c1d8a55b28f906f1b72cb53f68cbb097b44f860",
+      "a06c713779cbd88519ed4a585ac0cb8a5e9d612b"
+    }, 
+    {
+      184,
+      "755175528d55c39c56493d697b790f099a5ce741f7754b",
+      "bff7d52c13a3688132a1d407b1ab40f5b5ace298"
+    }, 
+    {
+      192,
+      "088fc38128bbdb9fd7d65228b3184b3faac6c8715f07272f",
+      "c7566b91d7b6f56bdfcaa9781a7b6841aacb17e9"
+    }, 
+    {
+      200,
+      "a4a586eb9245a6c87e3adf1009ac8a49f46c07e14185016895",
+      "ffa30c0b5c550ea4b1e34f8a60ec9295a1e06ac1"
+    }, 
+    {
+      208, 
+      "8e7c555270c006092c2a3189e2a526b873e2e269f0fb28245256",
+      "29e66ed23e914351e872aa761df6e4f1a07f4b81"
+    }, 
+    {
+      216, 
+      "a5f3bfa6bb0ba3b59f6b9cbdef8a558ec565e8aa3121f405e7f2f0",
+      "b28cf5e5b806a01491d41f69bd9248765c5dc292"
+    }, 
+    {
+      224,
+      "589054f0d2bd3c2c85b466bfd8ce18e6ec3e0b87d944cd093ba36469",
+      "60224fb72c46069652cd78bcd08029ef64da62f3"
+    }, 
+    {
+      232,
+      "a0abb12083b5bbc78128601bf1cbdbc0fdf4b862b24d899953d8da0ff3",
+      "b72c4a86f72608f24c05f3b9088ef92fba431df7"
+    }, 
+    {
+      240,
+      "82143f4cea6fadbf998e128a8811dc75301cf1db4f079501ea568da68eeb",
+      "73779ad5d6b71b9b8328ef7220ff12eb167076ac"
+    },
+    {
+      248,
+      "9f1231dd6df1ff7bc0b0d4f989d048672683ce35d956d2f57913046267e6f3",
+      "a09671d4452d7cf50015c914a1e31973d20cc1a0"
+    }, 
+    {
+      256, 
+      "041c512b5eed791f80d3282f3a28df263bb1df95e1239a7650e5670fc2187919",
+      "e88cdcd233d99184a6fd260b8fca1b7f7687aee0"
+    }, 
+    {
+      264,
+      "17e81f6ae8c2e5579d69dafa6e070e7111461552d314b691e7a3e7a4feb3fae418",
+      "010def22850deb1168d525e8c84c28116cb8a269"
+    },
+    {
+      272, 
+      "d15976b23a1d712ad28fad04d805f572026b54dd64961fda94d5355a0cc98620cf77",
+      "aeaa40ba1717ed5439b1e6ea901b294ba500f9ad"
+    }, 
+    {
+      280, 
+      "09fce4d434f6bd32a44e04b848ff50ec9f642a8a85b37a264dc73f130f22838443328f",
+      "c6433791238795e34f080a5f1f1723f065463ca0"
+    }, 
+    {
+      288, "f17af27d776ec82a257d8d46d2b46b639462c56984cc1be9c1222eadb8b26594a25c709d",
+      "e21e22b89c1bb944a32932e6b2a2f20d491982c3"
+    }, 
+    {
+      296, 
+      "b13ce635d6f8758143ffb114f2f601cb20b6276951416a2f94fbf4ad081779d79f4f195b22",
+      "575323a9661f5d28387964d2ba6ab92c17d05a8a"
+    },
+    {
+      304,
+      "5498793f60916ff1c918dde572cdea76da8629ba4ead6d065de3dfb48de94d234cc1c5002910",
+      "feb44494af72f245bfe68e86c4d7986d57c11db7"
+    },
+    {
+      312,
+      "498a1e0b39fa49582ae688cd715c86fbaf8a81b8b11b4d1594c49c902d197c8ba8a621fd6e3be5",
+      "cff2290b3648ba2831b98dde436a72f9ebf51eee"
+    }, 
+    {
+      320,
+      "3a36ae71521f9af628b3e34dcb0d4513f84c78ee49f10416a98857150b8b15cb5c83afb4b570376e",
+      "9b4efe9d27b965905b0c3dab67b8d7c9ebacd56c"
+    }, 
+    {
+      328,
+      "dcc76b40ae0ea3ba253e92ac50fcde791662c5b6c948538cffc2d95e9de99cac34dfca38910db2678f",
+      "afedb0ff156205bcd831cbdbda43db8b0588c113"
+    }, 
+    {
+      336,
+      "5b5ec6ec4fd3ad9c4906f65c747fd4233c11a1736b6b228b92e90cddabb0c7c2fcf9716d3fad261dff33",
+      "8deb1e858f88293a5e5e4d521a34b2a4efa70fc4"
+    }, 
+    {
+      344,
+      "df48a37b29b1d6de4e94717d60cdb4293fcf170bba388bddf7a9035a15d433f20fd697c3e4c8b8c5f590ab",
+      "95cbdac0f74afa69cebd0e5c7defbc6faf0cbeaf"
+    }, 
+    {
+      352, 
+      "1f179b3b82250a65e1b0aee949e218e2f45c7a8dbfd6ba08de05c55acfc226b48c68d7f7057e5675cd96fcfc",
+      "f0307bcb92842e5ae0cd4f4f14f3df7f877fbef2"
+    }, 
+    {
+      360,
+      "ee3d72da3a44d971578972a8e6780ce64941267e0f7d0179b214fa97855e1790e888e09fbe3a70412176cb3b54",
+      "7b13bb0dbf14964bd63b133ac85e22100542ef55"
+    }, 
+    {
+      368,
+      "d4d4c7843d312b30f610b3682254c8be96d5f6684503f8fbfbcd15774fc1b084d3741afb8d24aaa8ab9c104f7258",
+      "c314d2b6cf439be678d2a74e890d96cfac1c02ed"
+    }, 
+    {
+      376, 
+      "32c094944f5936a190a0877fb9178a7bf60ceae36fd530671c5b38c5dbd5e6a6c0d615c2ac8ad04b213cc589541cf6",
+      "4d0be361e410b47a9d67d8ce0bb6a8e01c53c078"
+    }, 
+    {
+      384,
+      "e5d3180c14bf27a5409fa12b104a8fd7e9639609bfde6ee82bbf9648be2546d29688a65e2e3f3da47a45ac14343c9c02",
+      "e5353431ffae097f675cbf498869f6fbb6e1c9f2"
+    },
+    {
+      392, 
+      "e7b6e4b69f724327e41e1188a37f4fe38b1dba19cbf5a7311d6e32f1038e97ab506ee05aebebc1eed09fc0e357109818b9",
+      "b8720a7068a085c018ab18961de2765aa6cd9ac4"
+    }, 
+    {
+      400,
+      "bc880cb83b8ac68ef2fedc2da95e7677ce2aa18b0e2d8b322701f67af7d5e7a0d96e9e33326ccb7747cfff0852b961bfd475",
+      "b0732181568543ba85f2b6da602b4b065d9931aa"
+    }, 
+    {
+      408,
+      "235ea9c2ba7af25400f2e98a47a291b0bccdaad63faa2475721fda5510cc7dad814bce8dabb611790a6abe56030b798b75c944",
+      "9c22674cf3222c3ba921672694aafee4ce67b96b"
+    }, 
+    {
+      416, 
+      "07e3e29fed63104b8410f323b975fd9fba53f636af8c4e68a53fb202ca35dd9ee07cb169ec5186292e44c27e5696a967f5e67709",
+      "d128335f4cecca9066cdae08958ce656ff0b4cfc"
+    }, 
+    {
+      424, 
+      "65d2a1dd60a517eb27bfbf530cf6a5458f9d5f4730058bd9814379547f34241822bf67e6335a6d8b5ed06abf8841884c636a25733f",
+      "0b67c57ac578de88a2ae055caeaec8bb9b0085a0"
+    },
+    {
+      432,
+      "dcc86b3bd461615bab739d8daafac231c0f462e819ad29f9f14058f3ab5b75941d4241ea2f17ebb8a458831b37a9b16dead4a76a9b0e",
+      "c766f912a89d4ccda88e0cce6a713ef5f178b596"
+    }, 
+    {
+      440,
+      "4627d54f0568dc126b62a8c35fb46a9ac5024400f2995e51635636e1afc4373dbb848eb32df23914230560b82477e9c3572647a7f2bb92",
+      "9aa3925a9dcb177b15ccff9b78e70cf344858779"
+    }, 
+    {
+      448,
+      "ba531affd4381168ef24d8b275a84d9254c7f5cc55fded53aa8024b2c5c5c8aa7146fe1d1b83d62b70467e9a2e2cb67b3361830adbab28d7",
+      "4811fa30042fc076acf37c8e2274d025307e5943"
+    }, 
+    {
+      456,
+      "8764dcbcf89dcf4282eb644e3d568bdccb4b13508bfa7bfe0ffc05efd1390be22109969262992d377691eb4f77f3d59ea8466a74abf57b2ef4",
+      "6743018450c9730761ee2b130df9b91c1e118150"
+    }, 
+    {
+      464,
+      "497d9df9ddb554f3d17870b1a31986c1be277bc44feff713544217a9f579623d18b5ffae306c25a45521d2759a72c0459b58957255ab592f3be4",
+      "71ad4a19d37d92a5e6ef3694ddbeb5aa61ada645"
+    }, 
+    {
+      472, 
+      "72c3c2e065aefa8d9f7a65229e818176eef05da83f835107ba90ec2e95472e73e538f783b416c04654ba8909f26a12db6e5c4e376b7615e4a25819",
+      "a7d9dc68dacefb7d6116186048cb355cc548e11d"
+    }, 
+    {
+      480,
+      "7cc9894454d0055ab5069a33984e2f712bef7e3124960d33559f5f3b81906bb66fe64da13c153ca7f5cabc89667314c32c01036d12ecaf5f9a78de98",
+      "142e429f0522ba5abf5131fa81df82d355b96909"
+    }, 
+    {
+      488,
+      "74e8404d5a453c5f4d306f2cfa338ca65501c840ddab3fb82117933483afd6913c56aaf8a0a0a6b2a342fc3d9dc7599f4a850dfa15d06c61966d74ea59",
+      "ef72db70dcbcab991e9637976c6faf00d22caae9"
+    }, 
+    {
+      496,
+      "46fe5ed326c8fe376fcc92dc9e2714e2240d3253b105adfbb256ff7a19bc40975c604ad7c0071c4fd78a7cb64786e1bece548fa4833c04065fe593f6fb10",
+      "f220a7457f4588d639dc21407c942e9843f8e26b"
+    }, 
+    {
+      504, 
+      "836dfa2524d621cf07c3d2908835de859e549d35030433c796b81272fd8bc0348e8ddbc7705a5ad1fdf2155b6bc48884ac0cd376925f069a37849c089c8645", 
+      "ddd2117b6e309c233ede85f962a0c2fc215e5c69"
+    }, 
+    {
+      512, 
+      "7e3a4c325cb9c52b88387f93d01ae86d42098f5efa7f9457388b5e74b6d28b2438d42d8b64703324d4aa25ab6aad153ae30cd2b2af4d5e5c00a8a2d0220c6116", 
+      "a3054427cdb13f164a610b348702724c808a0dcc"
+    }
+  };
+  
+
+  for (i=0; i < 65; i++) {
+    err = hash_test_case_add(&sha1_test_case_list, 
+			     tc[i].hex_data, 
+			     tc[i].bit_len/8, 
+			     tc[i].hex_hash, 20);
+    if (err) {
+      printf("error adding hash test case (code %d)\n", err);
+      return err;
+    }
+  }
+
+  return err_status_ok;
+}
+
+
+err_status_t
+sha1_validate(void) {
+  hash_test_case_t *test_case;
+  err_status_t err;
+
+  err = sha1_add_test_cases();
+  if (err) {
+    printf("error adding SHA1 test cases (error code %d)\n", err);
+    return err;
+  }  
+
+  if (sha1_test_case_list == NULL)
+    return err_status_cant_check;
+  
+  test_case = sha1_test_case_list;
+  while (test_case != NULL) {
+    err = sha1_test_case_validate(test_case);
+    if (err) {
+      printf("error validating hash test case (error code %d)\n", err);
+      return err;
+    }
+    test_case = test_case->next_test_case;
+  }
+
+  return err_status_ok;
+}
+
+
+
+int
+main (void) {
+  err_status_t err;
+
+  printf("sha1 test driver\n");
+
+  err = sha1_validate();
+  if (err) {
+    printf("SHA1 did not pass validation testing\n");
+    return 1;
+  }
+  printf("SHA1 passed validation tests\n");
+
+  return 0;
+
+}
diff --git a/crypto/test/stat_driver.c b/crypto/test/stat_driver.c
new file mode 100644
index 0000000..09cc44a
--- /dev/null
+++ b/crypto/test/stat_driver.c
@@ -0,0 +1,101 @@
+/*
+ * stat-driver.c
+ *
+ * test driver for the stat_test functions
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+
+#include <stdio.h>         /* for printf() */
+
+#include "err.h"
+#include "stat.h"
+
+#include "cipher.h"
+
+typedef struct {
+  void *state;
+} random_source_t;
+
+err_status_t
+random_source_alloc(void);
+
+void
+err_check(err_status_t s) {
+  if (s) {
+    printf("error (code %d)\n", s);
+    exit(1);
+  }
+}
+
+int
+main (int argc, char *argv[]) {
+  uint8_t buffer[2500];
+  unsigned int buf_len = 2500;
+  int i, j;
+  extern cipher_type_t aes_icm;
+  cipher_t *c;
+  uint8_t key[30] = {
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05
+    };
+  v128_t nonce;
+  int num_trials = 500;
+  int num_fail;
+
+  printf("statistical tests driver\n");
+
+  for (i=0; i < 2500; i++)
+    buffer[i] = 0;
+
+  /* run tests */
+  printf("running stat_tests on all-null buffer, expecting failure\n");
+  printf("monobit %d\n", stat_test_monobit(buffer));
+  printf("poker   %d\n", stat_test_poker(buffer));
+  printf("runs    %d\n", stat_test_runs(buffer));
+
+  for (i=0; i < 2500; i++)
+    buffer[i] = rand();
+  printf("running stat_tests on rand(), expecting success\n");
+  printf("monobit %d\n", stat_test_monobit(buffer));
+  printf("poker   %d\n", stat_test_poker(buffer));
+  printf("runs    %d\n", stat_test_runs(buffer));
+
+  printf("running stat_tests on AES-128-ICM, expecting success\n");
+  /* set buffer to cipher output */
+  for (i=0; i < 2500; i++)
+    buffer[i] = 0;
+  err_check(cipher_type_alloc(&aes_icm, &c, 30));
+  err_check(cipher_init(c, key, direction_encrypt));
+  err_check(cipher_set_iv(c, &nonce));
+  err_check(cipher_encrypt(c, buffer, &buf_len));
+  /* run tests on cipher outout */
+  printf("monobit %d\n", stat_test_monobit(buffer));
+  printf("poker   %d\n", stat_test_poker(buffer));
+  printf("runs    %d\n", stat_test_runs(buffer));
+
+  printf("runs test (please be patient): ");
+  fflush(stdout);
+  num_fail = 0;
+  v128_set_to_zero(&nonce);
+  for(j=0; j < num_trials; j++) {
+    for (i=0; i < 2500; i++)
+      buffer[i] = 0;
+    nonce.v32[3] = i;
+    err_check(cipher_set_iv(c, &nonce));
+    err_check(cipher_encrypt(c, buffer, &buf_len));
+    if (stat_test_runs(buffer)) {
+      num_fail++;
+    }
+  }
+
+  printf("%d failures in %d tests\n", num_fail, num_trials);
+  printf("(nota bene: a small fraction of stat_test failures does not \n"
+	 "indicate that the random source is invalid)\n");
+
+  return 0;
+}
diff --git a/doc/Doxyfile b/doc/Doxyfile
new file mode 100644
index 0000000..c6e6a6d
--- /dev/null
+++ b/doc/Doxyfile
@@ -0,0 +1,1042 @@
+# Doxyfile 1.3-rc3
+
+# This file describes the settings to be used by the documentation system
+# doxygen (www.doxygen.org) for a project
+#
+# All text after a hash (#) is considered a comment and will be ignored
+# The format is:
+#       TAG = value [value, ...]
+# For lists items can also be appended using:
+#       TAG += value [value, ...]
+# Values that contain spaces should be placed between quotes (" ")
+
+#---------------------------------------------------------------------------
+# General configuration options
+#---------------------------------------------------------------------------
+
+# The PROJECT_NAME tag is a single word (or a sequence of words surrounded 
+# by quotes) that should identify the project.
+
+PROJECT_NAME           = libSRTP
+
+# The PROJECT_NUMBER tag can be used to enter a project or revision number. 
+# This could be handy for archiving the generated documentation or 
+# if some version control system is used.
+
+PROJECT_NUMBER         = 1.3.22
+
+# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) 
+# base path where the generated documentation will be put. 
+# If a relative path is entered, it will be relative to the location 
+# where doxygen was started. If left blank the current directory will be used.
+
+OUTPUT_DIRECTORY       = 
+
+# The OUTPUT_LANGUAGE tag is used to specify the language in which all 
+# documentation generated by doxygen is written. Doxygen will use this 
+# information to generate all constant output in the proper language. 
+# The default language is English, other supported languages are: 
+# Brazilian, Catalan, Chinese, Chinese-Traditional, Croatian, Czech, Danish, Dutch, 
+# Finnish, French, German, Greek, Hungarian, Italian, Japanese, Japanese-en 
+# (Japanese with english messages), Korean, Norwegian, Polish, Portuguese, 
+# Romanian, Russian, Serbian, Slovak, Slovene, Spanish, Swedish and Ukrainian.
+
+OUTPUT_LANGUAGE        = English
+
+# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in 
+# documentation are documented, even if no documentation was available. 
+# Private class members and static file members will be hidden unless 
+# the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES
+
+EXTRACT_ALL            = NO
+
+# If the EXTRACT_PRIVATE tag is set to YES all private members of a class 
+# will be included in the documentation.
+
+EXTRACT_PRIVATE        = NO
+
+# If the EXTRACT_STATIC tag is set to YES all static members of a file 
+# will be included in the documentation.
+
+EXTRACT_STATIC         = NO
+
+# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs) 
+# defined locally in source files will be included in the documentation. 
+# If set to NO only classes defined in header files are included.
+
+EXTRACT_LOCAL_CLASSES  = YES
+
+# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all 
+# undocumented members of documented classes, files or namespaces. 
+# If set to NO (the default) these members will be included in the 
+# various overviews, but no documentation section is generated. 
+# This option has no effect if EXTRACT_ALL is enabled.
+
+HIDE_UNDOC_MEMBERS     = YES
+
+# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all 
+# undocumented classes that are normally visible in the class hierarchy. 
+# If set to NO (the default) these class will be included in the various 
+# overviews. This option has no effect if EXTRACT_ALL is enabled.
+
+HIDE_UNDOC_CLASSES     = NO
+
+# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all 
+# friend (class|struct|union) declarations. 
+# If set to NO (the default) these declarations will be included in the 
+# documentation.
+
+HIDE_FRIEND_COMPOUNDS  = NO
+
+# If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any 
+# documentation blocks found inside the body of a function. 
+# If set to NO (the default) these blocks will be appended to the 
+# function's detailed documentation block.
+
+HIDE_IN_BODY_DOCS      = NO
+
+# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will 
+# include brief member descriptions after the members that are listed in 
+# the file and class documentation (similar to JavaDoc). 
+# Set to NO to disable this.
+
+BRIEF_MEMBER_DESC      = YES
+
+# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend 
+# the brief description of a member or function before the detailed description. 
+# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the 
+# brief descriptions will be completely suppressed.
+
+REPEAT_BRIEF           = NO
+
+# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then 
+# Doxygen will generate a detailed section even if there is only a brief 
+# description.
+
+ALWAYS_DETAILED_SEC    = NO
+
+# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show
+# all inherited members of a class in the documentation of that class
+# as if those members were ordinary class members. Constructors,
+# destructors and assignment operators of the base classes will not be
+# shown.
+
+INLINE_INHERITED_MEMB  = NO
+
+# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full 
+# path before files name in the file list and in the header files. If set 
+# to NO the shortest path that makes the file name unique will be used.
+
+FULL_PATH_NAMES        = NO
+
+# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag 
+# can be used to strip a user defined part of the path. Stripping is 
+# only done if one of the specified strings matches the left-hand part of 
+# the path. It is allowed to use relative paths in the argument list.
+
+STRIP_FROM_PATH        = 
+
+# The INTERNAL_DOCS tag determines if documentation 
+# that is typed after a \internal command is included. If the tag is set 
+# to NO (the default) then the documentation will be excluded. 
+# Set it to YES to include the internal documentation.
+
+INTERNAL_DOCS          = NO
+
+# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate 
+# file names in lower case letters. If set to YES upper case letters are also 
+# allowed. This is useful if you have classes or files whose names only differ 
+# in case and if your file system supports case sensitive file names. Windows 
+# users are adviced to set this option to NO.
+
+CASE_SENSE_NAMES       = YES
+
+# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter 
+# (but less readable) file names. This can be useful is your file systems 
+# doesn't support long names like on DOS, Mac, or CD-ROM.
+
+SHORT_NAMES            = NO
+
+# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen 
+# will show members with their full class and namespace scopes in the 
+# documentation. If set to YES the scope will be hidden.
+
+HIDE_SCOPE_NAMES       = NO
+
+# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen 
+# will generate a verbatim copy of the header file for each class for 
+# which an include is specified. Set to NO to disable this.
+
+VERBATIM_HEADERS       = YES
+
+# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen 
+# will put list of the files that are included by a file in the documentation 
+# of that file.
+
+SHOW_INCLUDE_FILES     = NO
+
+# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen 
+# will interpret the first line (until the first dot) of a JavaDoc-style 
+# comment as the brief description. If set to NO, the JavaDoc 
+# comments  will behave just like the Qt-style comments (thus requiring an 
+# explict @brief command for a brief description.
+
+JAVADOC_AUTOBRIEF      = NO
+
+# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen 
+# treat a multi-line C++ special comment block (i.e. a block of //! or /// 
+# comments) as a brief description. This used to be the default behaviour. 
+# The new default is to treat a multi-line C++ comment block as a detailed 
+# description. Set this tag to YES if you prefer the old behaviour instead.
+
+MULTILINE_CPP_IS_BRIEF = NO
+
+# If the DETAILS_AT_TOP tag is set to YES then Doxygen 
+# will output the detailed description near the top, like JavaDoc.
+# If set to NO, the detailed description appears after the member 
+# documentation.
+
+DETAILS_AT_TOP         = NO
+
+# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented 
+# member inherits the documentation from any documented member that it 
+# reimplements.
+
+INHERIT_DOCS           = YES
+
+# If the INLINE_INFO tag is set to YES (the default) then a tag [inline] 
+# is inserted in the documentation for inline members.
+
+INLINE_INFO            = YES
+
+# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen 
+# will sort the (detailed) documentation of file and class members 
+# alphabetically by member name. If set to NO the members will appear in 
+# declaration order.
+
+SORT_MEMBER_DOCS       = YES
+
+# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC 
+# tag is set to YES, then doxygen will reuse the documentation of the first 
+# member in the group (if any) for the other members of the group. By default 
+# all members of a group must be documented explicitly.
+
+DISTRIBUTE_GROUP_DOC   = NO
+
+# The TAB_SIZE tag can be used to set the number of spaces in a tab. 
+# Doxygen uses this value to replace tabs by spaces in code fragments.
+
+TAB_SIZE               = 3
+
+# The GENERATE_TODOLIST tag can be used to enable (YES) or 
+# disable (NO) the todo list. This list is created by putting \todo 
+# commands in the documentation.
+
+GENERATE_TODOLIST      = YES
+
+# The GENERATE_TESTLIST tag can be used to enable (YES) or 
+# disable (NO) the test list. This list is created by putting \test 
+# commands in the documentation.
+
+GENERATE_TESTLIST      = YES
+
+# The GENERATE_BUGLIST tag can be used to enable (YES) or 
+# disable (NO) the bug list. This list is created by putting \bug 
+# commands in the documentation.
+
+GENERATE_BUGLIST       = YES
+
+# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or 
+# disable (NO) the deprecated list. This list is created by putting 
+# \deprecated commands in the documentation.
+
+GENERATE_DEPRECATEDLIST= YES
+
+# This tag can be used to specify a number of aliases that acts 
+# as commands in the documentation. An alias has the form "name=value". 
+# For example adding "sideeffect=\par Side Effects:\n" will allow you to 
+# put the command \sideeffect (or @sideeffect) in the documentation, which 
+# will result in a user defined paragraph with heading "Side Effects:". 
+# You can put \n's in the value part of an alias to insert newlines.
+
+ALIASES                = 
+
+# The ENABLED_SECTIONS tag can be used to enable conditional 
+# documentation sections, marked by \if sectionname ... \endif.
+
+ENABLED_SECTIONS       = 
+
+# The MAX_INITIALIZER_LINES tag determines the maximum number of lines 
+# the initial value of a variable or define consist of for it to appear in 
+# the documentation. If the initializer consists of more lines than specified 
+# here it will be hidden. Use a value of 0 to hide initializers completely. 
+# The appearance of the initializer of individual variables and defines in the 
+# documentation can be controlled using \showinitializer or \hideinitializer 
+# command in the documentation regardless of this setting.
+
+MAX_INITIALIZER_LINES  = 30
+
+# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources 
+# only. Doxygen will then generate output that is more tailored for C. 
+# For instance some of the names that are used will be different. The list 
+# of all members will be omitted, etc.
+
+OPTIMIZE_OUTPUT_FOR_C  = YES
+
+# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java sources 
+# only. Doxygen will then generate output that is more tailored for Java. 
+# For instance namespaces will be presented as packages, qualified scopes 
+# will look different, etc.
+
+OPTIMIZE_OUTPUT_JAVA   = NO
+
+# Set the SHOW_USED_FILES tag to NO to disable the list of files generated 
+# at the bottom of the documentation of classes and structs. If set to YES the 
+# list will mention the files that were used to generate the documentation.
+
+SHOW_USED_FILES        = YES
+
+#---------------------------------------------------------------------------
+# configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+
+# The QUIET tag can be used to turn on/off the messages that are generated 
+# by doxygen. Possible values are YES and NO. If left blank NO is used.
+
+QUIET                  = NO
+
+# The WARNINGS tag can be used to turn on/off the warning messages that are 
+# generated by doxygen. Possible values are YES and NO. If left blank 
+# NO is used.
+
+WARNINGS               = YES
+
+# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings 
+# for undocumented members. If EXTRACT_ALL is set to YES then this flag will 
+# automatically be disabled.
+
+WARN_IF_UNDOCUMENTED   = YES
+
+# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for 
+# potential errors in the documentation, such as not documenting some 
+# parameters in a documented function, or documenting parameters that 
+# don't exist or using markup commands wrongly.
+
+WARN_IF_DOC_ERROR      = YES
+
+# The WARN_FORMAT tag determines the format of the warning messages that 
+# doxygen can produce. The string should contain the $file, $line, and $text 
+# tags, which will be replaced by the file and line number from which the 
+# warning originated and the warning text.
+
+WARN_FORMAT            = "$file:$line: $text"
+
+# The WARN_LOGFILE tag can be used to specify a file to which warning 
+# and error messages should be written. If left blank the output is written 
+# to stderr.
+
+WARN_LOGFILE           = 
+
+#---------------------------------------------------------------------------
+# configuration options related to the input files
+#---------------------------------------------------------------------------
+
+# The INPUT tag can be used to specify the files and/or directories that contain 
+# documented source files. You may enter file names like "myfile.cpp" or 
+# directories like "/usr/src/myproject". Separate the files or directories 
+# with spaces.
+
+INPUT                  = intro.txt ../include/srtp.h ../crypto/include/crypto_types.h ../crypto/include/err.h ../crypto/include/crypto.h  crypto_kernel.txt 
+
+# If the value of the INPUT tag contains directories, you can use the 
+# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp 
+# and *.h) to filter out the source-files in the directories. If left 
+# blank the following patterns are tested: 
+# *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx *.hpp 
+# *.h++ *.idl *.odl
+
+FILE_PATTERNS          = 
+
+# The RECURSIVE tag can be used to turn specify whether or not subdirectories 
+# should be searched for input files as well. Possible values are YES and NO. 
+# If left blank NO is used.
+
+RECURSIVE              = NO
+
+# The EXCLUDE tag can be used to specify files and/or directories that should 
+# excluded from the INPUT source files. This way you can easily exclude a 
+# subdirectory from a directory tree whose root is specified with the INPUT tag.
+
+EXCLUDE                = 
+
+# The EXCLUDE_SYMLINKS tag can be used select whether or not files or directories 
+# that are symbolic links (a Unix filesystem feature) are excluded from the input.
+
+EXCLUDE_SYMLINKS       = NO
+
+# If the value of the INPUT tag contains directories, you can use the 
+# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude 
+# certain files from those directories.
+
+EXCLUDE_PATTERNS       = 
+
+# The EXAMPLE_PATH tag can be used to specify one or more files or 
+# directories that contain example code fragments that are included (see 
+# the \include command).
+
+EXAMPLE_PATH           = 
+
+# If the value of the EXAMPLE_PATH tag contains directories, you can use the 
+# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp 
+# and *.h) to filter out the source-files in the directories. If left 
+# blank all files are included.
+
+EXAMPLE_PATTERNS       = 
+
+# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be 
+# searched for input files to be used with the \include or \dontinclude 
+# commands irrespective of the value of the RECURSIVE tag. 
+# Possible values are YES and NO. If left blank NO is used.
+
+EXAMPLE_RECURSIVE      = NO
+
+# The IMAGE_PATH tag can be used to specify one or more files or 
+# directories that contain image that are included in the documentation (see 
+# the \image command).
+
+IMAGE_PATH             = 
+
+# The INPUT_FILTER tag can be used to specify a program that doxygen should 
+# invoke to filter for each input file. Doxygen will invoke the filter program 
+# by executing (via popen()) the command <filter> <input-file>, where <filter> 
+# is the value of the INPUT_FILTER tag, and <input-file> is the name of an 
+# input file. Doxygen will then use the output that the filter program writes 
+# to standard output.
+
+INPUT_FILTER           = 
+
+# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using 
+# INPUT_FILTER) will be used to filter the input files when producing source 
+# files to browse (i.e. when SOURCE_BROWSER is set to YES).
+
+FILTER_SOURCE_FILES    = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to source browsing
+#---------------------------------------------------------------------------
+
+# If the SOURCE_BROWSER tag is set to YES then a list of source files will 
+# be generated. Documented entities will be cross-referenced with these sources.
+
+SOURCE_BROWSER         = NO
+
+# Setting the INLINE_SOURCES tag to YES will include the body 
+# of functions and classes directly in the documentation.
+
+INLINE_SOURCES         = NO
+
+# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct 
+# doxygen to hide any special comment blocks from generated source code 
+# fragments. Normal C and C++ comments will always remain visible.
+
+STRIP_CODE_COMMENTS    = YES
+
+# If the REFERENCED_BY_RELATION tag is set to YES (the default) 
+# then for each documented function all documented 
+# functions referencing it will be listed.
+
+REFERENCED_BY_RELATION = YES
+
+# If the REFERENCES_RELATION tag is set to YES (the default) 
+# then for each documented function all documented entities 
+# called/used by that function will be listed.
+
+REFERENCES_RELATION    = YES
+
+#---------------------------------------------------------------------------
+# configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+
+# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index 
+# of all compounds will be generated. Enable this if the project 
+# contains a lot of classes, structs, unions or interfaces.
+
+ALPHABETICAL_INDEX     = NO
+
+# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then 
+# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns 
+# in which this list will be split (can be a number in the range [1..20])
+
+COLS_IN_ALPHA_INDEX    = 5
+
+# In case all classes in a project start with a common prefix, all 
+# classes will be put under the same header in the alphabetical index. 
+# The IGNORE_PREFIX tag can be used to specify one or more prefixes that 
+# should be ignored while generating the index headers.
+
+IGNORE_PREFIX          = 
+
+#---------------------------------------------------------------------------
+# configuration options related to the HTML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_HTML tag is set to YES (the default) Doxygen will 
+# generate HTML output.
+
+GENERATE_HTML          = NO
+
+# The HTML_OUTPUT tag is used to specify where the HTML docs will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `html' will be used as the default path.
+
+HTML_OUTPUT            = html
+
+# The HTML_FILE_EXTENSION tag can be used to specify the file extension for 
+# each generated HTML page (for example: .htm,.php,.asp). If it is left blank 
+# doxygen will generate files with .html extension.
+
+HTML_FILE_EXTENSION    = .html
+
+# The HTML_HEADER tag can be used to specify a personal HTML header for 
+# each generated HTML page. If it is left blank doxygen will generate a 
+# standard header.
+
+HTML_HEADER            = 
+
+# The HTML_FOOTER tag can be used to specify a personal HTML footer for 
+# each generated HTML page. If it is left blank doxygen will generate a 
+# standard footer.
+
+HTML_FOOTER            = 
+
+# The HTML_STYLESHEET tag can be used to specify a user defined cascading 
+# style sheet that is used by each HTML page. It can be used to 
+# fine-tune the look of the HTML output. If the tag is left blank doxygen 
+# will generate a default style sheet
+
+HTML_STYLESHEET        = 
+
+# If the HTML_ALIGN_MEMBERS tag is set to YES, the members of classes, 
+# files or namespaces will be aligned in HTML using tables. If set to 
+# NO a bullet list will be used.
+
+HTML_ALIGN_MEMBERS     = YES
+
+# If the GENERATE_HTMLHELP tag is set to YES, additional index files 
+# will be generated that can be used as input for tools like the 
+# Microsoft HTML help workshop to generate a compressed HTML help file (.chm) 
+# of the generated HTML documentation.
+
+GENERATE_HTMLHELP      = NO
+
+# If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can 
+# be used to specify the file name of the resulting .chm file. You 
+# can add a path in front of the file if the result should not be 
+# written to the html output dir.
+
+CHM_FILE               = 
+
+# If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can 
+# be used to specify the location (absolute path including file name) of 
+# the HTML help compiler (hhc.exe). If non empty doxygen will try to run 
+# the html help compiler on the generated index.hhp.
+
+HHC_LOCATION           = 
+
+# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag 
+# controls if a separate .chi index file is generated (YES) or that 
+# it should be included in the master .chm file (NO).
+
+GENERATE_CHI           = NO
+
+# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag 
+# controls whether a binary table of contents is generated (YES) or a 
+# normal table of contents (NO) in the .chm file.
+
+BINARY_TOC             = NO
+
+# The TOC_EXPAND flag can be set to YES to add extra items for group members 
+# to the contents of the Html help documentation and to the tree view.
+
+TOC_EXPAND             = NO
+
+# The DISABLE_INDEX tag can be used to turn on/off the condensed index at 
+# top of each HTML page. The value NO (the default) enables the index and 
+# the value YES disables it.
+
+DISABLE_INDEX          = NO
+
+# This tag can be used to set the number of enum values (range [1..20]) 
+# that doxygen will group on one line in the generated HTML documentation.
+
+ENUM_VALUES_PER_LINE   = 4
+
+# If the GENERATE_TREEVIEW tag is set to YES, a side panel will be
+# generated containing a tree-like index structure (just like the one that 
+# is generated for HTML Help). For this to work a browser that supports 
+# JavaScript, DHTML, CSS and frames is required (for instance Mozilla, 
+# Netscape 6.0+, Internet explorer 5.0+, or Konqueror). Windows users are 
+# probably better off using the HTML help feature.
+
+GENERATE_TREEVIEW      = NO
+
+# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be 
+# used to set the initial width (in pixels) of the frame in which the tree 
+# is shown.
+
+TREEVIEW_WIDTH         = 250
+
+#---------------------------------------------------------------------------
+# configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will 
+# generate Latex output.
+
+GENERATE_LATEX         = YES
+
+# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `latex' will be used as the default path.
+
+LATEX_OUTPUT           = latex
+
+# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be 
+# invoked. If left blank `latex' will be used as the default command name.
+
+LATEX_CMD_NAME         = latex
+
+# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to 
+# generate index for LaTeX. If left blank `makeindex' will be used as the 
+# default command name.
+
+MAKEINDEX_CMD_NAME     = makeindex
+
+# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact 
+# LaTeX documents. This may be useful for small projects and may help to 
+# save some trees in general.
+
+COMPACT_LATEX          = NO
+
+# The PAPER_TYPE tag can be used to set the paper type that is used 
+# by the printer. Possible values are: a4, a4wide, letter, legal and 
+# executive. If left blank a4wide will be used.
+
+PAPER_TYPE             = letter 
+
+# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX 
+# packages that should be included in the LaTeX output.
+
+EXTRA_PACKAGES         = 
+
+# The LATEX_HEADER tag can be used to specify a personal LaTeX header for 
+# the generated latex document. The header should contain everything until 
+# the first chapter. If it is left blank doxygen will generate a 
+# standard header. Notice: only use this tag if you know what you are doing!
+
+LATEX_HEADER           = header.tex
+
+# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated 
+# is prepared for conversion to pdf (using ps2pdf). The pdf file will 
+# contain links (just like the HTML output) instead of page references 
+# This makes the output suitable for online browsing using a pdf viewer.
+
+PDF_HYPERLINKS         = YES
+
+# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of 
+# plain latex in the generated Makefile. Set this option to YES to get a 
+# higher quality PDF documentation.
+
+USE_PDFLATEX           = YES
+
+# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode. 
+# command to the generated LaTeX files. This will instruct LaTeX to keep 
+# running if errors occur, instead of asking the user for help. 
+# This option is also used when generating formulas in HTML.
+
+LATEX_BATCHMODE        = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the RTF output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output 
+# The RTF output is optimised for Word 97 and may not look very pretty with 
+# other RTF readers or editors.
+
+GENERATE_RTF           = NO
+
+# The RTF_OUTPUT tag is used to specify where the RTF docs will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `rtf' will be used as the default path.
+
+RTF_OUTPUT             = rtf
+
+# If the COMPACT_RTF tag is set to YES Doxygen generates more compact 
+# RTF documents. This may be useful for small projects and may help to 
+# save some trees in general.
+
+COMPACT_RTF            = NO
+
+# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated 
+# will contain hyperlink fields. The RTF file will 
+# contain links (just like the HTML output) instead of page references. 
+# This makes the output suitable for online browsing using WORD or other 
+# programs which support those fields. 
+# Note: wordpad (write) and others do not support links.
+
+RTF_HYPERLINKS         = NO
+
+# Load stylesheet definitions from file. Syntax is similar to doxygen's 
+# config file, i.e. a series of assigments. You only have to provide 
+# replacements, missing definitions are set to their default value.
+
+RTF_STYLESHEET_FILE    = 
+
+# Set optional variables used in the generation of an rtf document. 
+# Syntax is similar to doxygen's config file.
+
+RTF_EXTENSIONS_FILE    = 
+
+#---------------------------------------------------------------------------
+# configuration options related to the man page output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_MAN tag is set to YES (the default) Doxygen will 
+# generate man pages
+
+GENERATE_MAN           = NO
+
+# The MAN_OUTPUT tag is used to specify where the man pages will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `man' will be used as the default path.
+
+MAN_OUTPUT             = man
+
+# The MAN_EXTENSION tag determines the extension that is added to 
+# the generated man pages (default is the subroutine's section .3)
+
+MAN_EXTENSION          = .3
+
+# If the MAN_LINKS tag is set to YES and Doxygen generates man output, 
+# then it will generate one additional man file for each entity 
+# documented in the real man page(s). These additional files 
+# only source the real man page, but without them the man command 
+# would be unable to find the correct page. The default is NO.
+
+MAN_LINKS              = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the XML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_XML tag is set to YES Doxygen will 
+# generate an XML file that captures the structure of 
+# the code including all documentation. Note that this 
+# feature is still experimental and incomplete at the 
+# moment.
+
+GENERATE_XML           = NO
+
+# The XML_SCHEMA tag can be used to specify an XML schema, 
+# which can be used by a validating XML parser to check the 
+# syntax of the XML files.
+
+XML_SCHEMA             = 
+
+# The XML_DTD tag can be used to specify an XML DTD, 
+# which can be used by a validating XML parser to check the 
+# syntax of the XML files.
+
+XML_DTD                = 
+
+#---------------------------------------------------------------------------
+# configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will 
+# generate an AutoGen Definitions (see autogen.sf.net) file 
+# that captures the structure of the code including all 
+# documentation. Note that this feature is still experimental 
+# and incomplete at the moment.
+
+GENERATE_AUTOGEN_DEF   = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_PERLMOD tag is set to YES Doxygen will 
+# generate a Perl module file that captures the structure of 
+# the code including all documentation. Note that this 
+# feature is still experimental and incomplete at the 
+# moment.
+
+GENERATE_PERLMOD       = NO
+
+# If the PERLMOD_LATEX tag is set to YES Doxygen will generate 
+# the necessary Makefile rules, Perl scripts and LaTeX code to be able 
+# to generate PDF and DVI output from the Perl module output.
+
+PERLMOD_LATEX          = NO
+
+# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be 
+# nicely formatted so it can be parsed by a human reader.  This is useful 
+# if you want to understand what is going on.  On the other hand, if this 
+# tag is set to NO the size of the Perl module output will be much smaller 
+# and Perl will parse it just the same.
+
+PERLMOD_PRETTY         = YES
+
+# The names of the make variables in the generated doxyrules.make file 
+# are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. 
+# This is useful so different doxyrules.make files included by the same 
+# Makefile don't overwrite each other's variables.
+
+PERLMOD_MAKEVAR_PREFIX = 
+
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor   
+#---------------------------------------------------------------------------
+
+# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will 
+# evaluate all C-preprocessor directives found in the sources and include 
+# files.
+
+ENABLE_PREPROCESSING   = YES
+
+# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro 
+# names in the source code. If set to NO (the default) only conditional 
+# compilation will be performed. Macro expansion can be done in a controlled 
+# way by setting EXPAND_ONLY_PREDEF to YES.
+
+MACRO_EXPANSION        = NO
+
+# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES 
+# then the macro expansion is limited to the macros specified with the 
+# PREDEFINED and EXPAND_AS_PREDEFINED tags.
+
+EXPAND_ONLY_PREDEF     = NO
+
+# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files 
+# in the INCLUDE_PATH (see below) will be search if a #include is found.
+
+SEARCH_INCLUDES        = YES
+
+# The INCLUDE_PATH tag can be used to specify one or more directories that 
+# contain include files that are not input files but should be processed by 
+# the preprocessor.
+
+INCLUDE_PATH           = 
+
+# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard 
+# patterns (like *.h and *.hpp) to filter out the header-files in the 
+# directories. If left blank, the patterns specified with FILE_PATTERNS will 
+# be used.
+
+INCLUDE_FILE_PATTERNS  = 
+
+# The PREDEFINED tag can be used to specify one or more macro names that 
+# are defined before the preprocessor is started (similar to the -D option of 
+# gcc). The argument of the tag is a list of macros of the form: name 
+# or name=definition (no spaces). If the definition and the = are 
+# omitted =1 is assumed.
+
+PREDEFINED             = 
+
+# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then 
+# this tag can be used to specify a list of macro names that should be expanded. 
+# The macro definition that is found in the sources will be used. 
+# Use the PREDEFINED tag if you want to use a different macro definition.
+
+EXPAND_AS_DEFINED      = 
+
+# If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then 
+# doxygen's preprocessor will remove all function-like macros that are alone 
+# on a line, have an all uppercase name, and do not end with a semicolon. Such 
+# function macros are typically used for boiler-plate code, and will confuse the 
+# parser if not removed.
+
+SKIP_FUNCTION_MACROS   = YES
+
+#---------------------------------------------------------------------------
+# Configuration::addtions related to external references   
+#---------------------------------------------------------------------------
+
+# The TAGFILES tag can be used to specify one or more tagfiles.
+
+TAGFILES               = 
+
+# When a file name is specified after GENERATE_TAGFILE, doxygen will create 
+# a tag file that is based on the input files it reads.
+
+GENERATE_TAGFILE       = 
+
+# If the ALLEXTERNALS tag is set to YES all external classes will be listed 
+# in the class index. If set to NO only the inherited external classes 
+# will be listed.
+
+ALLEXTERNALS           = NO
+
+# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed 
+# in the modules index. If set to NO, only the current project's groups will 
+# be listed.
+
+EXTERNAL_GROUPS        = YES
+
+# The PERL_PATH should be the absolute path and name of the perl script 
+# interpreter (i.e. the result of `which perl').
+
+PERL_PATH              = /usr/bin/perl
+
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool   
+#---------------------------------------------------------------------------
+
+# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will 
+# generate a inheritance diagram (in Html, RTF and LaTeX) for classes with base or 
+# super classes. Setting the tag to NO turns the diagrams off. Note that this 
+# option is superceded by the HAVE_DOT option below. This is only a fallback. It is 
+# recommended to install and use dot, since it yield more powerful graphs.
+
+CLASS_DIAGRAMS         = YES
+
+# If set to YES, the inheritance and collaboration graphs will hide 
+# inheritance and usage relations if the target is undocumented 
+# or is not a class.
+
+HIDE_UNDOC_RELATIONS   = YES
+
+# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is 
+# available from the path. This tool is part of Graphviz, a graph visualization 
+# toolkit from AT&T and Lucent Bell Labs. The other options in this section 
+# have no effect if this option is set to NO (the default)
+
+HAVE_DOT               = NO
+
+# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen 
+# will generate a graph for each documented class showing the direct and 
+# indirect inheritance relations. Setting this tag to YES will force the 
+# the CLASS_DIAGRAMS tag to NO.
+
+CLASS_GRAPH            = YES
+
+# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen 
+# will generate a graph for each documented class showing the direct and 
+# indirect implementation dependencies (inheritance, containment, and 
+# class references variables) of the class with other documented classes.
+
+COLLABORATION_GRAPH    = YES
+
+# If set to YES, the inheritance and collaboration graphs will show the 
+# relations between templates and their instances.
+
+TEMPLATE_RELATIONS     = YES
+
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT 
+# tags are set to YES then doxygen will generate a graph for each documented 
+# file showing the direct and indirect include dependencies of the file with 
+# other documented files.
+
+INCLUDE_GRAPH          = YES
+
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and 
+# HAVE_DOT tags are set to YES then doxygen will generate a graph for each 
+# documented header file showing the documented files that directly or 
+# indirectly include this file.
+
+INCLUDED_BY_GRAPH      = YES
+
+# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen 
+# will graphical hierarchy of all classes instead of a textual one.
+
+GRAPHICAL_HIERARCHY    = YES
+
+# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images 
+# generated by dot. Possible values are png, jpg, or gif
+# If left blank png will be used.
+
+DOT_IMAGE_FORMAT       = png
+
+# The tag DOT_PATH can be used to specify the path where the dot tool can be 
+# found. If left blank, it is assumed the dot tool can be found on the path.
+
+DOT_PATH               = 
+
+# The DOTFILE_DIRS tag can be used to specify one or more directories that 
+# contain dot files that are included in the documentation (see the 
+# \dotfile command).
+
+DOTFILE_DIRS           = 
+
+# The MAX_DOT_GRAPH_WIDTH tag can be used to set the maximum allowed width 
+# (in pixels) of the graphs generated by dot. If a graph becomes larger than 
+# this value, doxygen will try to truncate the graph, so that it fits within 
+# the specified constraint. Beware that most browsers cannot cope with very 
+# large images.
+
+MAX_DOT_GRAPH_WIDTH    = 1024
+
+# The MAX_DOT_GRAPH_HEIGHT tag can be used to set the maximum allows height 
+# (in pixels) of the graphs generated by dot. If a graph becomes larger than 
+# this value, doxygen will try to truncate the graph, so that it fits within 
+# the specified constraint. Beware that most browsers cannot cope with very 
+# large images.
+
+MAX_DOT_GRAPH_HEIGHT   = 1024
+
+# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will 
+# generate a legend page explaining the meaning of the various boxes and 
+# arrows in the dot generated graphs.
+
+GENERATE_LEGEND        = YES
+
+# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will 
+# remove the intermedate dot files that are used to generate 
+# the various graphs.
+
+DOT_CLEANUP            = YES
+
+#---------------------------------------------------------------------------
+# Configuration::addtions related to the search engine   
+#---------------------------------------------------------------------------
+
+# The SEARCHENGINE tag specifies whether or not a search engine should be 
+# used. If set to NO the values of all tags below this one will be ignored.
+
+SEARCHENGINE           = NO
+
+# The CGI_NAME tag should be the name of the CGI script that 
+# starts the search engine (doxysearch) with the correct parameters. 
+# A script with this name will be generated by doxygen.
+
+CGI_NAME               = search.cgi
+
+# The CGI_URL tag should be the absolute URL to the directory where the 
+# cgi binaries are located. See the documentation of your http daemon for 
+# details.
+
+CGI_URL                = 
+
+# The DOC_URL tag should be the absolute URL to the directory where the 
+# documentation is located. If left blank the absolute path to the 
+# documentation, with file:// prepended to it, will be used.
+
+DOC_URL                = 
+
+# The DOC_ABSPATH tag should be the absolute path to the directory where the 
+# documentation is located. If left blank the directory on the local machine 
+# will be used.
+
+DOC_ABSPATH            = 
+
+# The BIN_ABSPATH tag must point to the directory where the doxysearch binary 
+# is installed.
+
+BIN_ABSPATH            = /usr/local/bin/
+
+# The EXT_DOC_PATHS tag can be used to specify one or more paths to 
+# documentation generated for other projects. This allows doxysearch to search 
+# the documentation for these projects as well.
+
+EXT_DOC_PATHS          = 
diff --git a/doc/Makefile b/doc/Makefile
new file mode 100644
index 0000000..d4c0845
--- /dev/null
+++ b/doc/Makefile
@@ -0,0 +1,44 @@
+# Makefile for libSRTP documentation
+#
+# David A. McGrew
+# Cisco Systems, Inc.
+#
+# This makefile does not use the autoconf system; we don't really need
+# it.  We just run doxygen then latex.  If you don't have either of
+# these, then there is no way that you can make your own
+# documentation.  Of course, you can just go online at pick up the
+# documentation from http://srtp.sourceforge.net.
+
+srcdir = .
+top_srcdir = ..
+top_builddir = ../
+
+
+# Determine the version of the library
+
+version = $(shell cat $(top_srcdir)/VERSION)
+
+
+.PHONY: libsrtpdoc cryptodoc clean
+libsrtpdoc: 
+	@if test ! -e Doxyfile; then \
+		echo "*** Sorry, can't build doc outside source dir"; exit 1; \
+	fi
+	sed 's/LIBSRTPVERSION/$(version)/' header.template > header.tex
+	doxygen
+	sed 's/\subsection/\section/' latex/index.tex > latex/index.tmp
+	mv latex/index.tmp latex/index.tex
+	cd latex; make
+	cp latex/refman.pdf libsrtp.pdf
+
+
+cryptodoc: clean
+	doxygen crypto.dox
+	cd latex; make
+	cp latex/refman.pdf crypto.pdf
+
+clean:
+	rm -rf latex/ header.tex
+	for a in * ; do			                \
+              if [ -f "$$a~" ] ; then rm -f $$a~; fi;	\
+        done;
diff --git a/doc/Makefile.in b/doc/Makefile.in
new file mode 100644
index 0000000..5b4b6bd
--- /dev/null
+++ b/doc/Makefile.in
@@ -0,0 +1,44 @@
+# Makefile for libSRTP documentation
+#
+# David A. McGrew
+# Cisco Systems, Inc.
+#
+# This makefile does not use the autoconf system; we don't really need
+# it.  We just run doxygen then latex.  If you don't have either of
+# these, then there is no way that you can make your own
+# documentation.  Of course, you can just go online at pick up the
+# documentation from http://srtp.sourceforge.net.
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+top_builddir = @top_builddir@
+VPATH = @srcdir@
+
+# Determine the version of the library
+
+version = $(shell cat $(top_srcdir)/VERSION)
+
+
+.PHONY: libsrtpdoc cryptodoc clean
+libsrtpdoc: 
+	@if test ! -e Doxyfile; then \
+		echo "*** Sorry, can't build doc outside source dir"; exit 1; \
+	fi
+	sed 's/LIBSRTPVERSION/$(version)/' header.template > header.tex
+	doxygen
+	sed 's/\subsection/\section/' latex/index.tex > latex/index.tmp
+	mv latex/index.tmp latex/index.tex
+	cd latex; make
+	cp latex/refman.pdf libsrtp.pdf
+
+
+cryptodoc: clean
+	doxygen crypto.dox
+	cd latex; make
+	cp latex/refman.pdf crypto.pdf
+
+clean:
+	rm -rf latex/ header.tex
+	for a in * ; do			                \
+              if [ -f "$$a~" ] ; then rm -f $$a~; fi;	\
+        done;
diff --git a/doc/crypto_kernel.txt b/doc/crypto_kernel.txt
new file mode 100644
index 0000000..b0d033f
--- /dev/null
+++ b/doc/crypto_kernel.txt
@@ -0,0 +1,76 @@
+/**
+
+@defgroup CryptoKernel Cryptographic Kernel
+
+All of the cryptographic functions are contained in a kernel.
+
+*/
+
+/**
+
+@defgroup CipherImplementations Ciphers
+@ingroup  CryptoKernel
+
+@brief A generic cipher type enables cipher agility, that is, the
+ability to write code that runs with multiple cipher types.
+Ciphers can be used through the crypto kernel, or can be accessed
+directly, if need be.
+
+@{
+
+*/
+
+/**
+ * @brief Allocates a cipher of a particular type.
+ * @warning May be implemented as a macro.
+ */
+err_status_t
+cipher_type_alloc(cipher_type_t *ctype, cipher_t **cipher, 
+                        unsigned key_len);
+
+/**
+ * @brief Initialized a cipher to use a particular key.  May
+ *       be invoked more than once on the same cipher.
+ * @warning May be implemented as a macro.
+ */
+
+err_status_t
+cipher_init(cipher_t *cipher, const uint8_t *key);
+
+/**
+ * @brief Sets the initialization vector of a given cipher.
+ * @warning May be implemented as a macro.
+ */
+
+err_status_t
+cipher_set_iv(cipher_t *cipher, void *iv);
+
+/**
+ * @brief Encrypts a buffer with a given cipher.
+ * @warning May be implemented as a macro.
+ */                           
+
+err_status_t
+cipher_encrypt(cipher_t *cipher, void *buf, unsigned int *len);
+
+/**
+ * @brief Sets a buffer to the keystream generated by the cipher.
+ * @warning May be implemented as a macro.
+ */
+err_status_t 
+cipher_output(cipher_t *c, uint8_t *buffer, int num_octets_to_output);
+
+/**
+ * @brief Deallocates a cipher.
+ * @warning May be implemented as a macro.
+ */
+err_status_t
+cipher_dealloc(cipher_t *cipher);
+
+
+
+/**
+ * @} 
+ */
+
+ */
\ No newline at end of file
diff --git a/doc/draft-irtf-cfrg-icm-00.txt b/doc/draft-irtf-cfrg-icm-00.txt
new file mode 100644
index 0000000..ddfce33
--- /dev/null
+++ b/doc/draft-irtf-cfrg-icm-00.txt
Binary files differ
diff --git a/doc/header.template b/doc/header.template
new file mode 100644
index 0000000..2c0b96d
--- /dev/null
+++ b/doc/header.template
@@ -0,0 +1,115 @@
+% header.tex
+% 
+% header file for the libSRTP documentation - based on the header
+% file generated by doxygen, with the initial chapters of the 
+% original libSRTP documentation tacked on
+% 
+\documentclass[letterpaper]{book}
+\usepackage{makeidx}
+\usepackage{fancyhdr}
+\usepackage{graphicx}
+\usepackage{multicol}
+\usepackage{float}
+\usepackage{textcomp}
+\usepackage{alltt}
+\usepackage{times}
+\usepackage{graphicx}
+\ifx\pdfoutput\undefined
+\usepackage[ps2pdf,
+            pagebackref=true,
+            colorlinks=true,
+            linkcolor=blue
+           ]{hyperref}
+\else
+\usepackage[pdftex,
+            pagebackref=true,
+            colorlinks=true,
+            linkcolor=blue
+           ]{hyperref}
+\fi
+\usepackage{doxygen}
+\makeindex
+\setcounter{tocdepth}{1}
+\renewcommand{\footrulewidth}{0.4pt}
+
+% these lengths are from DAM
+\textwidth = 6.5 in
+%\textheight = 9 in
+\oddsidemargin = 0.0 in
+\evensidemargin = 0.0 in
+\topmargin = 0.0 in
+\headheight = 0.0 in
+%\headsep = 0.0 in
+\parskip = 0.2in
+\parindent = 0.0in
+
+% these header and footer definitions from DAM
+\lhead{libSRTP}
+\chead{}
+\rhead{\rightmark}
+%\rhead{\slshape }
+\lfoot{}
+\cfoot{ \thepage }
+\rfoot{}
+%\fancyhead[LE,RO]{\rightmark }
+%\fancyhead[LO,RE]{\slshape }
+
+% let's use the palatino font
+\fontfamily{ppl}
+\selectfont
+
+
+\begin{document}
+\begin{titlepage}
+\vspace*{4cm}
+%\begin{center}
+{\Huge 
+libSRTP LIBSRTPVERSION Overview and Reference Manual\\
+  \hrulefill
+}\\
+\vspace*{0cm}
+\begin{flushright}
+{\Large David A. McGrew \\ \texttt{mcgrew@cisco.com} }\\
+\vspace*{0.5cm}
+\end{flushright}
+%\end{center}
+
+%\includegraphics[scale=.8]{phone}
+
+\end{titlepage}
+
+
+\clearemptydoublepage
+\vspace*{3cm}
+{\LARGE Preface}
+\vspace{1cm}
+
+The original implementation and documentation of libSRTP was written
+by David McGrew of Cisco Systems, Inc. in order to promote the use,
+understanding, and interoperability of Secure RTP.  Michael Jerris
+contributed support for building under MSVC.  Andris Pavenis
+contributed many important fixes.  Brian West contributed changes to
+enable dynamic linking.  Yves Shumann reported documentation bugs.
+Randell Jesup contributed a working SRTCP implementation and other
+fixes.  Alex Vanzella and Will Clark contributed changes so that the
+AES ICM implementation can be used for ISMA media encryption.  Steve
+Underwood contributed x86\_64 portability changes.  We also give
+thanks to Fredrik Thulin, Brian Weis, Mark Baugher, Jeff Chan, Bill
+Simon, Douglas Smith, Bill May, Richard Preistley, Joe Tardo and
+others for contributions, comments, and corrections.
+
+This reference material in this documenation was generated using the
+\texttt{doxygen} utility for automatic documentation of source code.
+
+\copyright 2001-2005 by David A. McGrew, Cisco Systems, Inc.
+\thispagestyle{empty}
+
+\clearemptydoublepage
+\pagenumbering{roman}
+\tableofcontents
+%\clearemptydoublepage
+
+\clearemptydoublepage
+\pagenumbering{arabic}
+
+
diff --git a/doc/intro.txt b/doc/intro.txt
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+/**
+ 
+@mainpage Introduction to libSRTP
+ 
+This document describes libSRTP, the Open Source Secure RTP library
+from Cisco Systems, Inc.  RTP is the Real-time Transport Protocol, an
+IETF standard for the transport of real-time data such as telephony,
+audio, and video, defined by RFC1889.  Secure RTP (SRTP) is an RTP
+profile for providing confidentiality to RTP data and authentication
+to the RTP header and payload.  SRTP is an IETF Proposed Standard, and
+is defined in RFC 3711, and was developed in the IETF Audio/Video
+Transport (AVT) Working Group.  This library supports all of the
+mandatory features of SRTP, but not all of the optional features.  See
+the @ref Features section for more detailed information.
+ 
+This document is organized as follows.  The first chapter provides 
+background material on SRTP and overview of libSRTP.  The following
+chapters provide a detailed reference to the libSRTP API and related
+functions.  The reference material is created automatically (using the
+doxygen utility) from comments embedded in some of the C header
+files. The documentation is organized into modules in order to improve
+its clarity.  These modules do not directly correspond to files. An
+underlying cryptographic kernel provides much of the basic
+functionality of libSRTP, but is mostly undocumented because it does
+its work behind the scenes.
+
+@section LICENSE License and Disclaimer
+
+libSRTP is distributed under the following license, which is included
+in the source code distribution.  It is reproduced in the manual in
+case you got the library from another source.
+	
+@latexonly
+\begin{quote}
+Copyright (c) 2001-2005 Cisco Systems, Inc.  All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+\begin{itemize}
+\item  Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer.
+\item Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the following
+  disclaimer in the documentation and/or other materials provided
+  with the distribution.
+\item Neither the name of the Cisco Systems, Inc. nor the names of its
+  contributors may be used to endorse or promote products derived
+  from this software without specific prior written permission.
+\end{itemize}
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+OF THE POSSIBILITY OF SUCH DAMAGE.
+\end{quote}
+@endlatexonly
+
+@section Features Supported Features
+
+This library supports all of the mandatory-to-implement features of
+SRTP (as defined by the most recent Internet Draft).  Some of these
+features can be selected (or de-selected) at run time by setting an
+appropriate policy; this is done using the structure srtp_policy_t.
+Some other behaviors of the protocol can be adapted by defining an
+approriate event handler for the exceptional events; see the @ref
+SRTPevents section.  
+
+Some options that are not included in the specification are supported.
+Most notably, the TMMH authentication function is included, though it
+was removed from the SRTP Internet Draft during the summer of 2002.
+
+
+@latexonly
+Some options that are described in the SRTP specification are not
+supported.  This includes 
+\begin{itemize}
+\item the Master Key Index (MKI),
+\item key derivation rates other than zero,
+\item the cipher F8,
+\item anti-replay lists with sizes other than 128,
+\item the use of the packet index to select between master keys.
+\end{itemize}
+@endlatexonly
+ 
+The user should be aware that it is possible to misuse this libary,
+and that the result may be that the security level it provides is
+inadequate.  If you are implementing a feature using this library, you
+will want to read the Security Considerations section of the Internet
+Draft.  In addition, it is important that you read and understand the
+terms outlined in the @ref LICENSE section.
+
+
+@section Installing Installing and Building libSRTP
+
+@latexonly
+
+To install libSRTP, download the latest release of the distribution
+from \texttt{srtp.sourceforge.net}.  The format of the names of the
+distributions are \texttt{srtp-A.B.C.tgz}, where \texttt{A} is the
+version number, \texttt{B} is the major release number, \texttt{C} is
+the minor release number, and \texttt{tgz} is the file
+extension\footnote{The extension \texttt{.tgz} is identical to
+\texttt{tar.gz}, and indicates a compressed tar file.}  You probably
+want to get the most recent release.  Unpack the distribution and
+extract the source files; the directory into which the soruce files
+will go is named \texttt{srtp}.
+
+libSRTP uses the GNU \texttt{autoconf} and \texttt{make}
+utilities\footnote{BSD make will not work; if both versions of make
+are on your platform, you can invoke GNU make as \texttt{gmake}.}.  In
+the \texttt{srtp} directory, run the configure script and then make:
+\begin{verbatim}
+  ./configure [ options ]       
+  make                          
+\end{verbatim}
+The configure script accepts the following options:
+\begin{quote}
+\begin{description}
+\item[--help]              provides a usage summary.
+\item[--disable-debug]     compiles libSRTP without the runtime 
+			   dynamic debugging system.
+\item[--enable-generic-aesicm] compile in changes for ismacryp
+\item[--enable-syslog]     use syslog for error reporting.
+\item[--disable-stdout]    diables stdout for error reporting.
+\item[--enable-console]    use \texttt{/dev/console} for error reporting
+\item[--gdoi]              use GDOI key management (disabled at present).
+\end{description}
+\end{quote}
+
+By default, dynamic debbuging is enabled and stdout is used for
+debugging.  You can use the configure options to have the debugging
+output sent to syslog or the system console.  Alternatively, you can
+define ERR\_REPORTING\_FILE in \texttt{include/conf.h} to be any other
+file that can be opened by libSRTP, and debug messages will be sent to
+it.
+
+This package has been tested on the following platforms: Mac OS X
+(powerpc-apple-darwin1.4), Cygwin (i686-pc-cygwin), Solaris
+(sparc-sun-solaris2.6), RedHat Linux 7.1 and 9 (i686-pc-linux), and
+OpenBSD (sparc-unknown-openbsd2.7).
+
+
+@endlatexonly
+
+@section Applications Applications
+
+@latexonly
+
+Several test drivers and a simple and portable srtp application are
+included in the \texttt{test/} subdirectory.
+
+\begin{center}
+\begin{tabular}{ll}
+\hline
+Test driver    	& Function tested	\\
+\hline
+kernel\_driver   & crypto kernel (ciphers, auth funcs, rng) \\
+srtp\_driver	& srtp in-memory tests (does not use the network) \\
+rdbx\_driver	& rdbx (extended replay database) \\
+roc\_driver	& extended sequence number functions \\ 
+replay\_driver	& replay database  \\
+cipher\_driver	& ciphers  \\
+auth\_driver	& hash functions \\
+\hline
+\end{tabular}
+\end{center}
+
+The app rtpw is a simple rtp application which reads words from
+/usr/dict/words and then sends them out one at a time using [s]rtp.
+Manual srtp keying uses the -k option; automated key management
+using gdoi will be added later.
+
+The usage for rtpw is
+
+\texttt{rtpw [[-d $<$debug$>$]* [-k $<$key$>$ [-a][-e]] [-s | -r] dest\_ip
+dest\_port][-l]}
+
+Either the -s (sender) or -r (receiver) option must be chosen.  The
+values dest\_ip, dest\_port are the IP address and UDP port to which
+the dictionary will be sent, respectively.  The options are:
+\begin{center}
+\begin{tabular}{ll}
+  -s		& (S)RTP sender - causes app to send words \\
+  -r		& (S)RTP receive - causes app to receve words \\
+  -k $<$key$>$      & use SRTP master key $<$key$>$, where the 
+		key is a hexadecimal value (without the
+                leading "0x") \\
+  -e            & encrypt/decrypt (for data confidentiality)
+                (requires use of -k option as well)\\
+  -a            & message authentication 
+                (requires use of -k option as well) \\
+  -l            & list the avaliable debug modules \\
+  -d $<$debug$>$    & turn on debugging for module $<$debug$>$ \\
+\end{tabular}
+\end{center}
+
+In order to get a random 30-byte value for use as a key/salt pair, you
+can use the \texttt{rand\_gen} utility in the \texttt{test/}
+subdirectory.
+
+An example of an SRTP session using two rtpw programs follows:
+
+\begin{verbatim}
+[sh1] set k=`test/rand_gen -n 30`
+[sh1] echo $k
+c1eec3717da76195bb878578790af71c4ee9f859e197a414a78d5abc7451
+[sh1]$ test/rtpw -s -k $k -ea 0.0.0.0 9999 
+Security services: confidentiality message authentication
+set master key/salt to C1EEC3717DA76195BB878578790AF71C/4EE9F859E197A414A78D5ABC7451
+setting SSRC to 2078917053
+sending word: A
+sending word: a
+sending word: aa
+sending word: aal
+sending word: aalii
+sending word: aam
+sending word: Aani
+sending word: aardvark
+...
+
+[sh2] set k=c1eec3717da76195bb878578790af71c4ee9f859e197a414a78d5abc7451
+[sh2]$ test/rtpw -r -k $k -ea 0.0.0.0 9999 
+security services: confidentiality message authentication
+set master key/salt to C1EEC3717DA76195BB878578790AF71C/4EE9F859E197A414A78D5ABC7451
+19 octets received from SSRC 2078917053 word: A
+19 octets received from SSRC 2078917053 word: a
+20 octets received from SSRC 2078917053 word: aa
+21 octets received from SSRC 2078917053 word: aal
+...
+\end{verbatim}
+
+
+@endlatexonly
+
+
+@section Review Secure RTP Background
+
+In this section we review SRTP and introduce some terms that are used
+in libSRTP.  An RTP session is defined by a pair of destination
+transport addresses, that is, a network address plus a pair of UDP
+ports for RTP and RTCP.  RTCP, the RTP control protocol, is used to
+coordinate between the participants in an RTP session, e.g. to provide
+feedback from receivers to senders.  An @e SRTP @e session is
+similarly defined; it is just an RTP session for which the SRTP
+profile is being used.  An SRTP session consists of the traffic sent
+to the SRTP or SRTCP destination transport addresses.  Each
+participant in a session is identified by a synchronization source
+(SSRC) identifier.  Some participants may not send any SRTP traffic;
+they are called receivers, even though they send out SRTCP traffic,
+such as receiver reports.
+
+RTP allows multiple sources to send RTP and RTCP traffic during the
+same session.  The synchronization source identifier (SSRC) is used to
+distinguish these sources.  In libSRTP, we call the SRTP and SRTCP
+traffic from a particular source a @e stream.  Each stream has its own
+SSRC, sequence number, rollover counter, and other data.  A particular
+choice of options, cryptographic mechanisms, and keys is called a @e
+policy.  Each stream within a session can have a distinct policy
+applied to it.  A session policy is a collection of stream policies.
+
+A single policy can be used for all of the streams in a given session,
+though the case in which a single @e key is shared across multiple
+streams requires care.  When key sharing is used, the SSRC values that
+identify the streams @b must be distinct.  This requirement can be
+enforced by using the convention that each SRTP and SRTCP key is used
+for encryption by only a single sender.  In other words, the key is
+shared only across streams that originate from a particular device (of
+course, other SRTP participants will need to use the key for
+decryption).  libSRTP supports this enforcement by detecting the case
+in which a key is used for both inbound and outbound data.
+
+
+@section Overview libSRTP Overview
+
+libSRTP provides functions for protecting RTP and RTCP.  RTP packets
+can be encrypted and authenticated (using the srtp_protect()
+function), turning them into SRTP packets.  Similarly, SRTP packets
+can be decrypted and have their authentication verified (using the
+srtp_unprotect() function), turning them into RTP packets.  Similar
+functions apply security to RTCP packets.
+
+The typedef srtp_stream_t points to a structure holding all of the
+state associated with an SRTP stream, including the keys and
+parameters for cipher and message authentication functions and the
+anti-replay data.  A particular srtp_stream_t holds the information
+needed to protect a particular RTP and RTCP stream.  This datatype
+is intentionally opaque in order to better seperate the libSRTP
+API from its implementation.
+
+Within an SRTP session, there can be multiple streams, each
+originating from a particular sender.  Each source uses a distinct
+stream context to protect the RTP and RTCP stream that it is
+originating.  The typedef srtp_t points to a structure holding all of
+the state associated with an SRTP session.  There can be multiple
+stream contexts associated with a single srtp_t.  A stream context
+cannot exist indepent from an srtp_t, though of course an srtp_t can
+be created that contains only a single stream context.  A device
+participating in an SRTP session must have a stream context for each
+source in that session, so that it can process the data that it
+receives from each sender.
+
+
+In libSRTP, a session is created using the function srtp_create().
+The policy to be implemented in the session is passed into this
+function as an srtp_policy_t structure.  A single one of these
+structures describes the policy of a single stream.  These structures
+can also be linked together to form an entire session policy.  A linked
+list of srtp_policy_t structures is equivalent to a session policy.  
+In such a policy, we refer to a single srtp_policy_t as an @e element.
+
+An srtp_policy_t strucutre contains two crypto_policy_t structures
+that describe the cryptograhic policies for RTP and RTCP, as well as
+the SRTP master key and the SSRC value.  The SSRC describes what to
+protect (e.g. which stream), and the crypto_policy_t structures
+describe how to protect it.  The key is contained in a policy element
+because it simplifies the interface to the library.  In many cases, it
+is desirable to use the same cryptographic policies across all of the
+streams in a session, but to use a distinct key for each stream.  A
+crypto_policy_t structure can be initialized by using either the
+crypto_policy_set_rtp_default() or crypto_policy_set_rtcp_default()
+functions, which set a crypto policy structure to the default policies
+for RTP and RTCP protection, respectively.
+				   
+@section Example Example Code
+
+This section provides a simple example of how to use libSRTP.  The
+example code lacks error checking, but is functional.  Here we assume
+that the value ssrc is already set to describe the SSRC of the stream
+that we are sending, and that the functions get_rtp_packet() and
+send_srtp_packet() are available to us.  The former puts an RTP packet
+into the buffer and returns the number of octets written to that
+buffer.  The latter sends the RTP packet in the buffer, given the
+length as its second argument.
+
+@verbatim
+   srtp_t session;   
+   srtp_policy_t policy;
+   uint8_t key[30];
+
+   // initialize libSRTP 
+   srtp_init();                                  
+
+   // set policy to describe a policy for an SRTP stream 
+   crypto_policy_set_rtp_default(&policy.rtp);   
+   crypto_policy_set_rtcp_default(&policy.rtcp); 
+   policy.ssrc = ssrc;                            
+   policy.key  = key;
+   policy.next = NULL;
+
+   // set key to random value 
+   crypto_get_random(key, 30);          
+
+   // allocate and initialize the SRTP session 
+   srtp_create(&session, policy);  
+   
+   // main loop: get rtp packets, send srtp packets
+   while (1) {
+      char rtp_buffer[2048];
+      unsigned len;
+
+      len = get_rtp_packet(rtp_buffer);
+      srtp_protect(session, rtp_buffer, &len);
+      send_srtp_packet(rtp_buffer, len);
+   }
+@endverbatim
+
+@section ISMAcryp ISMA Encryption Support
+
+The Internet Streaming Media Alliance (ISMA) specifies a way 
+to pre-encrypt a media file prior to streaming.  This method
+is an alternative to SRTP encryption, which is potentially
+useful when a particular media file will be streamed
+multiple times.  The specification is available online 
+at  http://www.isma.tv/specreq.nsf/SpecRequest.
+
+libSRTP provides the encryption and decryption functions needed for ISMAcryp
+in the library @t libaesicm.a, which is included in the default
+Makefile target.  This library is used by the MPEG4IP project; see 
+http://mpeg4ip.sourceforge.net/.
+
+Note that ISMAcryp does not provide authentication for 
+RTP nor RTCP, nor confidentiality for RTCP.  
+ISMAcryp RECOMMENDS the use of SRTP message authentication for ISMAcryp
+streams while using ISMAcryp encryption to protect the media itself.
+
+
+ */
diff --git a/doc/libsrtp.pdf b/doc/libsrtp.pdf
new file mode 100644
index 0000000..99ddff1
--- /dev/null
+++ b/doc/libsrtp.pdf
Binary files differ
diff --git a/doc/references.txt b/doc/references.txt
new file mode 100644
index 0000000..2ec9d43
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+++ b/doc/references.txt
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+SRTP and ICM References 
+September, 2005
+
+This document provides references for the various cryptographic
+functions used in libSRTP and libaesicm.
+
+Secure RTP is defined in RFC 3711, which is included in this
+distribution for convenience.  The counter mode definition is in
+Section 4.1.1 of the SRTP draft.
+
+SHA-1 is defined in FIPS-180-1, available online at the NIST website.
+
+HMAC is defined in RFC2104, and HMAC-SHA1 test vectors are available
+in RFC2202, which are available online at http://www.ietf.org/rfc/
+
+ICM is defined by draft-irtf-cfrg-icm-00.txt, and its application in
+ISMAcryp (the Internet Streaming Media Alliance 1.0 Encryption and
+Authentication) is defined in that specification.  It is available
+from http://www.isma.tv/.
+
+
diff --git a/doc/rfc3711.txt b/doc/rfc3711.txt
new file mode 100644
index 0000000..ecc0648
--- /dev/null
+++ b/doc/rfc3711.txt
@@ -0,0 +1,3139 @@
+
+
+
+
+
+
+Network Working Group                                         M. Baugher
+Request for Comments: 3711                                     D. McGrew
+Category: Standards Track                            Cisco Systems, Inc.
+                                                              M. Naslund
+                                                              E. Carrara
+                                                              K. Norrman
+                                                       Ericsson Research
+                                                              March 2004
+
+
+             The Secure Real-time Transport Protocol (SRTP)
+
+Status of this Memo
+
+   This document specifies an Internet standards track protocol for the
+   Internet community, and requests discussion and suggestions for
+   improvements.  Please refer to the current edition of the "Internet
+   Official Protocol Standards" (STD 1) for the standardization state
+   and status of this protocol.  Distribution of this memo is unlimited.
+
+Copyright Notice
+
+   Copyright (C) The Internet Society (2004).  All Rights Reserved.
+
+Abstract
+
+   This document describes the Secure Real-time Transport Protocol
+   (SRTP), a profile of the Real-time Transport Protocol (RTP), which
+   can provide confidentiality, message authentication, and replay
+   protection to the RTP traffic and to the control traffic for RTP, the
+   Real-time Transport Control Protocol (RTCP).
+
+Table of Contents
+
+   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
+       1.1.  Notational Conventions . . . . . . . . . . . . . . . . .  3
+   2.  Goals and Features . . . . . . . . . . . . . . . . . . . . . .  4
+       2.1.  Features . . . . . . . . . . . . . . . . . . . . . . . .  5
+   3.  SRTP Framework . . . . . . . . . . . . . . . . . . . . . . . .  5
+       3.1.  Secure RTP . . . . . . . . . . . . . . . . . . . . . . .  6
+       3.2.  SRTP Cryptographic Contexts. . . . . . . . . . . . . . .  7
+             3.2.1.  Transform-independent parameters . . . . . . . .  8
+             3.2.2.  Transform-dependent parameters . . . . . . . . . 10
+             3.2.3.  Mapping SRTP Packets to Cryptographic Contexts . 10
+       3.3.  SRTP Packet Processing . . . . . . . . . . . . . . . . . 11
+             3.3.1.  Packet Index Determination, and ROC, s_l Update. 13
+             3.3.2.  Replay Protection. . . . . . . . . . . . . . . . 15
+      3.4.  Secure RTCP . . . . . . . . . . . . . . . . . . . . . . . 15
+
+
+
+Baugher, et al.             Standards Track                     [Page 1]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   4.  Pre-Defined Cryptographic Transforms . . . . . . . . . . . . . 19
+       4.1.  Encryption . . . . . . . . . . . . . . . . . . . . . . . 19
+             4.1.1.  AES in Counter Mode. . . . . . . . . . . . . . . 21
+             4.1.2.  AES in f8-mode . . . . . . . . . . . . . . . . . 22
+             4.1.3.  NULL Cipher. . . . . . . . . . . . . . . . . . . 25
+       4.2.  Message Authentication and Integrity . . . . . . . . . . 25
+             4.2.1.  HMAC-SHA1. . . . . . . . . . . . . . . . . . . . 25
+       4.3.  Key Derivation . . . . . . . . . . . . . . . . . . . . . 26
+             4.3.1.  Key Derivation Algorithm . . . . . . . . . . . . 26
+             4.3.2.  SRTCP Key Derivation . . . . . . . . . . . . . . 28
+             4.3.3.  AES-CM PRF . . . . . . . . . . . . . . . . . . . 28
+   5.  Default and mandatory-to-implement Transforms. . . . . . . . . 28
+       5.1.  Encryption: AES-CM and NULL. . . . . . . . . . . . . . . 29
+       5.2.  Message Authentication/Integrity: HMAC-SHA1. . . . . . . 29
+       5.3.  Key Derivation: AES-CM PRF . . . . . . . . . . . . . . . 29
+   6.  Adding SRTP Transforms . . . . . . . . . . . . . . . . . . . . 29
+   7.  Rationale. . . . . . . . . . . . . . . . . . . . . . . . . . . 30
+       7.1.  Key derivation . . . . . . . . . . . . . . . . . . . . . 30
+       7.2.  Salting key. . . . . . . . . . . . . . . . . . . . . . . 30
+       7.3.  Message Integrity from Universal Hashing . . . . . . . . 31
+       7.4.  Data Origin Authentication Considerations. . . . . . . . 31
+       7.5.  Short and Zero-length Message Authentication . . . . . . 32
+   8.  Key Management Considerations. . . . . . . . . . . . . . . . . 33
+       8.1.  Re-keying  . . . . . . . . . . . . . . . . . . . . . . . 34
+             8.1.1.  Use of the <From, To> for re-keying. . . . . . . 34
+       8.2.  Key Management parameters. . . . . . . . . . . . . . . . 35
+   9.  Security Considerations. . . . . . . . . . . . . . . . . . . . 37
+       9.1.  SSRC collision and two-time pad. . . . . . . . . . . . . 37
+       9.2.  Key Usage. . . . . . . . . . . . . . . . . . . . . . . . 38
+       9.3.  Confidentiality of the RTP Payload . . . . . . . . . . . 39
+       9.4.  Confidentiality of the RTP Header. . . . . . . . . . . . 40
+       9.5.  Integrity of the RTP payload and header. . . . . . . . . 40
+             9.5.1. Risks of Weak or Null Message Authentication. . . 42
+             9.5.2.  Implicit Header Authentication . . . . . . . . . 43
+   10.  Interaction with Forward Error Correction mechanisms. . . . . 43
+   11.  Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . 43
+       11.1. Unicast. . . . . . . . . . . . . . . . . . . . . . . . . 43
+       11.2. Multicast (one sender) . . . . . . . . . . . . . . . . . 44
+       11.3. Re-keying and access control . . . . . . . . . . . . . . 45
+       11.4. Summary of basic scenarios . . . . . . . . . . . . . . . 46
+   12. IANA Considerations. . . . . . . . . . . . . . . . . . . . . . 46
+   13. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 47
+   14. References . . . . . . . . . . . . . . . . . . . . . . . . . . 47
+       14.1. Normative References . . . . . . . . . . . . . . . . . . 47
+       14.2. Informative References . . . . . . . . . . . . . . . . . 48
+   Appendix A: Pseudocode for Index Determination . . . . . . . . . . 51
+   Appendix B: Test Vectors . . . . . . . . . . . . . . . . . . . . . 51
+       B.1.  AES-f8 Test Vectors. . . . . . . . . . . . . . . . . . . 51
+
+
+
+Baugher, et al.             Standards Track                     [Page 2]
+
+RFC 3711                          SRTP                        March 2004
+
+
+       B.2.  AES-CM Test Vectors. . . . . . . . . . . . . . . . . . . 52
+       B.3.  Key Derivation Test Vectors. . . . . . . . . . . . . . . 53
+   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 55
+   Full Copyright Statement . . . . . . . . . . . . . . . . . . . . . 56
+
+1.  Introduction
+
+   This document describes the Secure Real-time Transport Protocol
+   (SRTP), a profile of the Real-time Transport Protocol (RTP), which
+   can provide confidentiality, message authentication, and replay
+   protection to the RTP traffic and to the control traffic for RTP,
+   RTCP (the Real-time Transport Control Protocol) [RFC3350].
+
+   SRTP provides a framework for encryption and message authentication
+   of RTP and RTCP streams (Section 3).  SRTP defines a set of default
+   cryptographic transforms (Sections 4 and 5), and it allows new
+   transforms to be introduced in the future (Section 6).  With
+   appropriate key management (Sections 7 and 8), SRTP is secure
+   (Sections 9) for unicast and multicast RTP applications (Section 11).
+
+   SRTP can achieve high throughput and low packet expansion.  SRTP
+   proves to be a suitable protection for heterogeneous environments
+   (mix of wired and wireless networks).  To get such features, default
+   transforms are described, based on an additive stream cipher for
+   encryption, a keyed-hash based function for message authentication,
+   and an "implicit" index for sequencing/synchronization based on the
+   RTP sequence number for SRTP and an index number for Secure RTCP
+   (SRTCP).
+
+1.1.  Notational Conventions
+
+   The keywords "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
+   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
+   document are to be interpreted as described in [RFC2119].  The
+   terminology conforms to [RFC2828] with the following exception.  For
+   simplicity we use the term "random" throughout the document to denote
+   randomly or pseudo-randomly generated values.  Large amounts of
+   random bits may be difficult to obtain, and for the security of SRTP,
+   pseudo-randomness is sufficient [RFC1750].
+
+   By convention, the adopted representation is the network byte order,
+   i.e., the left most bit (octet) is the most significant one.  By XOR
+   we mean bitwise addition modulo 2 of binary strings, and || denotes
+   concatenation.  In other words, if C = A || B, then the most
+   significant bits of C are the bits of A, and the least significant
+   bits of C equal the bits of B.  Hexadecimal numbers are prefixed by
+   0x.
+
+
+
+
+Baugher, et al.             Standards Track                     [Page 3]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   The word "encryption" includes also use of the NULL algorithm (which
+   in practice does leave the data in the clear).
+
+   With slight abuse of notation, we use the terms "message
+   authentication" and "authentication tag" as is common practice, even
+   though in some circumstances, e.g., group communication, the service
+   provided is actually only integrity protection and not data origin
+   authentication.
+
+2.  Goals and Features
+
+   The security goals for SRTP are to ensure:
+
+   *  the confidentiality of the RTP and RTCP payloads, and
+
+   *  the integrity of the entire RTP and RTCP packets, together with
+      protection against replayed packets.
+
+   These security services are optional and independent from each other,
+   except that SRTCP integrity protection is mandatory (malicious or
+   erroneous alteration of RTCP messages could otherwise disrupt the
+   processing of the RTP stream).
+
+   Other, functional, goals for the protocol are:
+
+   *  a framework that permits upgrading with new cryptographic
+      transforms,
+
+   *  low bandwidth cost, i.e., a framework preserving RTP header
+      compression efficiency,
+
+   and, asserted by the pre-defined transforms:
+
+   *  a low computational cost,
+
+   *  a small footprint (i.e., small code size and data memory for
+      keying information and replay lists),
+
+   *  limited packet expansion to support the bandwidth economy goal,
+
+   *  independence from the underlying transport, network, and physical
+      layers used by RTP, in particular high tolerance to packet loss
+      and re-ordering.
+
+   These properties ensure that SRTP is a suitable protection scheme for
+   RTP/RTCP in both wired and wireless scenarios.
+
+
+
+
+
+Baugher, et al.             Standards Track                     [Page 4]
+
+RFC 3711                          SRTP                        March 2004
+
+
+2.1.  Features
+
+   Besides the above mentioned direct goals, SRTP provides for some
+   additional features.  They have been introduced to lighten the burden
+   on key management and to further increase security.  They include:
+
+   *  A single "master key" can provide keying material for
+      confidentiality and integrity protection, both for the SRTP stream
+      and the corresponding SRTCP stream.  This is achieved with a key
+      derivation function (see Section 4.3), providing "session keys"
+      for the respective security primitive, securely derived from the
+      master key.
+
+   *  In addition, the key derivation can be configured to periodically
+      refresh the session keys, which limits the amount of ciphertext
+      produced by a fixed key, available for an adversary to
+      cryptanalyze.
+
+   *  "Salting keys" are used to protect against pre-computation and
+      time-memory tradeoff attacks [MF00] [BS00].
+
+   Detailed rationale for these features can be found in Section 7.
+
+3.  SRTP Framework
+
+   RTP is the Real-time Transport Protocol [RFC3550].  We define SRTP as
+   a profile of RTP.  This profile is an extension to the RTP
+   Audio/Video Profile [RFC3551].  Except where explicitly noted, all
+   aspects of that profile apply, with the addition of the SRTP security
+   features.  Conceptually, we consider SRTP to be a "bump in the stack"
+   implementation which resides between the RTP application and the
+   transport layer.  SRTP intercepts RTP packets and then forwards an
+   equivalent SRTP packet on the sending side, and intercepts SRTP
+   packets and passes an equivalent RTP packet up the stack on the
+   receiving side.
+
+   Secure RTCP (SRTCP) provides the same security services to RTCP as
+   SRTP does to RTP.  SRTCP message authentication is MANDATORY and
+   thereby protects the RTCP fields to keep track of membership, provide
+   feedback to RTP senders, or maintain packet sequence counters.  SRTCP
+   is described in Section 3.4.
+
+
+
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                     [Page 5]
+
+RFC 3711                          SRTP                        March 2004
+
+
+3.1.  Secure RTP
+
+      The format of an SRTP packet is illustrated in Figure 1.
+
+        0                   1                   2                   3
+      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<+
+     |V=2|P|X|  CC   |M|     PT      |       sequence number         | |
+     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+     |                           timestamp                           | |
+     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+     |           synchronization source (SSRC) identifier            | |
+     +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ |
+     |            contributing source (CSRC) identifiers             | |
+     |                               ....                            | |
+     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+     |                   RTP extension (OPTIONAL)                    | |
+   +>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+   | |                          payload  ...                         | |
+   | |                               +-------------------------------+ |
+   | |                               | RTP padding   | RTP pad count | |
+   +>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<+
+   | ~                     SRTP MKI (OPTIONAL)                       ~ |
+   | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+   | :                 authentication tag (RECOMMENDED)              : |
+   | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+   |                                                                   |
+   +- Encrypted Portion*                      Authenticated Portion ---+
+
+   Figure 1.  The format of an SRTP packet.  *Encrypted Portion is the
+   same size as the plaintext for the Section 4 pre-defined transforms.
+
+   The "Encrypted Portion" of an SRTP packet consists of the encryption
+   of the RTP payload (including RTP padding when present) of the
+   equivalent RTP packet.  The Encrypted Portion MAY be the exact size
+   of the plaintext or MAY be larger.  Figure 1 shows the RTP payload
+   including any possible padding for RTP [RFC3550].
+
+   None of the pre-defined encryption transforms uses any padding; for
+   these, the RTP and SRTP payload sizes match exactly.  New transforms
+   added to SRTP (following Section 6) may require padding, and may
+   hence produce larger payloads.  RTP provides its own padding format
+   (as seen in Fig. 1), which due to the padding indicator in the RTP
+   header has merits in terms of compactness relative to paddings using
+   prefix-free codes.  This RTP padding SHALL be the default method for
+   transforms requiring padding.  Transforms MAY specify other padding
+   methods, and MUST then specify the amount, format, and processing of
+   their padding.  It is important to note that encryption transforms
+
+
+
+Baugher, et al.             Standards Track                     [Page 6]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   that use padding are vulnerable to subtle attacks, especially when
+   message authentication is not used [V02].  Each specification for a
+   new encryption transform needs to carefully consider and describe the
+   security implications of the padding that it uses.  Message
+   authentication codes define their own padding, so this default does
+   not apply to authentication transforms.
+
+   The OPTIONAL MKI and the RECOMMENDED authentication tag are the only
+   fields defined by SRTP that are not in RTP.  Only 8-bit alignment is
+   assumed.
+
+      MKI (Master Key Identifier): configurable length, OPTIONAL.  The
+              MKI is defined, signaled, and used by key management.  The
+              MKI identifies the master key from which the session
+              key(s) were derived that authenticate and/or encrypt the
+              particular packet.  Note that the MKI SHALL NOT identify
+              the SRTP cryptographic context, which is identified
+              according to Section 3.2.3.  The MKI MAY be used by key
+              management for the purposes of re-keying, identifying a
+              particular master key within the cryptographic context
+              (Section 3.2.1).
+
+      Authentication tag: configurable length, RECOMMENDED.  The
+              authentication tag is used to carry message authentication
+              data.  The Authenticated Portion of an SRTP packet
+              consists of the RTP header followed by the Encrypted
+              Portion of the SRTP packet.  Thus, if both encryption and
+              authentication are applied, encryption SHALL be applied
+              before authentication on the sender side and conversely on
+              the receiver side.  The authentication tag provides
+              authentication of the RTP header and payload, and it
+              indirectly provides replay protection by authenticating
+              the sequence number.  Note that the MKI is not integrity
+              protected as this does not provide any extra protection.
+
+3.2.  SRTP Cryptographic Contexts
+
+   Each SRTP stream requires the sender and receiver to maintain
+   cryptographic state information.  This information is called the
+   "cryptographic context".
+
+   SRTP uses two types of keys: session keys and master keys.  By a
+   "session key", we mean a key which is used directly in a
+   cryptographic transform (e.g., encryption or message authentication),
+   and by a "master key", we mean a random bit string (given by the key
+   management protocol) from which session keys are derived in a
+
+
+
+
+
+Baugher, et al.             Standards Track                     [Page 7]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   cryptographically secure way.  The master key(s) and other parameters
+   in the cryptographic context are provided by key management
+   mechanisms external to SRTP, see Section 8.
+
+3.2.1.  Transform-independent parameters
+
+   Transform-independent parameters are present in the cryptographic
+   context independently of the particular encryption or authentication
+   transforms that are used.  The transform-independent parameters of
+   the cryptographic context for SRTP consist of:
+
+   *  a 32-bit unsigned rollover counter (ROC), which records how many
+      times the 16-bit RTP sequence number has been reset to zero after
+      passing through 65,535.  Unlike the sequence number (SEQ), which
+      SRTP extracts from the RTP packet header, the ROC is maintained by
+      SRTP as described in Section 3.3.1.
+
+      We define the index of the SRTP packet corresponding to a given
+      ROC and RTP sequence number to be the 48-bit quantity
+
+            i = 2^16 * ROC + SEQ.
+
+   *  for the receiver only, a 16-bit sequence number s_l, which can be
+      thought of as the highest received RTP sequence number (see
+      Section 3.3.1 for its handling), which SHOULD be authenticated
+      since message authentication is RECOMMENDED,
+
+   *  an identifier for the encryption algorithm, i.e., the cipher and
+      its mode of operation,
+
+   *  an identifier for the message authentication algorithm,
+
+   *  a replay list, maintained by the receiver only (when
+      authentication and replay protection are provided), containing
+      indices of recently received and authenticated SRTP packets,
+
+   *  an MKI indicator (0/1) as to whether an MKI is present in SRTP and
+      SRTCP packets,
+
+   *  if the MKI indicator is set to one, the length (in octets) of the
+      MKI field, and (for the sender) the actual value of the currently
+      active MKI (the value of the MKI indicator and length MUST be kept
+      fixed for the lifetime of the context),
+
+   *  the master key(s), which MUST be random and kept secret,
+
+
+
+
+
+
+Baugher, et al.             Standards Track                     [Page 8]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   *  for each master key, there is a counter of the number of SRTP
+      packets that have been processed (sent) with that master key
+      (essential for security, see Sections 3.3.1 and 9),
+
+   *  non-negative integers n_e, and n_a, determining the length of the
+      session keys for encryption, and message authentication.
+
+   In addition, for each master key, an SRTP stream MAY use the
+   following associated values:
+
+   *  a master salt, to be used in the key derivation of session keys.
+      This value, when used, MUST be random, but MAY be public.  Use of
+      master salt is strongly RECOMMENDED, see Section 9.2.  A "NULL"
+      salt is treated as 00...0.
+
+   *  an integer in the set {1,2,4,...,2^24}, the "key_derivation_rate",
+      where an unspecified value is treated as zero.  The constraint to
+      be a power of 2 simplifies the session-key derivation
+      implementation, see Section 4.3.
+
+   *  an MKI value,
+
+   *  <From, To> values, specifying the lifetime for a master key,
+      expressed in terms of the two 48-bit index values inside whose
+      range (including the range end-points) the master key is valid.
+      For the use of <From, To>, see Section 8.1.1.  <From, To> is an
+      alternative to the MKI and assumes that a master key is in one-
+      to-one correspondence with the SRTP session key on which the
+      <From, To> range is defined.
+
+   SRTCP SHALL by default share the crypto context with SRTP, except:
+
+   *  no rollover counter and s_l-value need to be maintained as the
+      RTCP index is explicitly carried in each SRTCP packet,
+
+   *  a separate replay list is maintained (when replay protection is
+      provided),
+
+   *  SRTCP maintains a separate counter for its master key (even if the
+      master key is the same as that for SRTP, see below), as a means to
+      maintain a count of the number of SRTCP packets that have been
+      processed with that key.
+
+   Note in particular that the master key(s) MAY be shared between SRTP
+   and the corresponding SRTCP, if the pre-defined transforms (including
+   the key derivation) are used but the session key(s) MUST NOT be so
+   shared.
+
+
+
+
+Baugher, et al.             Standards Track                     [Page 9]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   In addition, there can be cases (see Sections 8 and 9.1) where
+   several SRTP streams within a given RTP session, identified by their
+   synchronization source (SSRCs, which is part of the RTP header),
+   share most of the crypto context parameters (including possibly
+   master and session keys).  In such cases, just as in the normal
+   SRTP/SRTCP parameter sharing above, separate replay lists and packet
+   counters for each stream (SSRC) MUST still be maintained.  Also,
+   separate SRTP indices MUST then be maintained.
+
+   A summary of parameters, pre-defined transforms, and default values
+   for the above parameters (and other SRTP parameters) can be found in
+   Sections 5 and 8.2.
+
+3.2.2.  Transform-dependent parameters
+
+   All encryption, authentication/integrity, and key derivation
+   parameters are defined in the transforms section (Section 4).
+   Typical examples of such parameters are block size of ciphers,
+   session keys, data for the Initialization Vector (IV) formation, etc.
+   Future SRTP transform specifications MUST include a section to list
+   the additional cryptographic context's parameters for that transform,
+   if any.
+
+3.2.3.  Mapping SRTP Packets to Cryptographic Contexts
+
+   Recall that an RTP session for each participant is defined [RFC3550]
+   by a pair of destination transport addresses (one network address
+   plus a port pair for RTP and RTCP), and that a multimedia session is
+   defined as a collection of RTP sessions.  For example, a particular
+   multimedia session could include an audio RTP session, a video RTP
+   session, and a text RTP session.
+
+   A cryptographic context SHALL be uniquely identified by the triplet
+   context identifier:
+
+   context id = <SSRC, destination network address, destination
+   transport port number>
+
+   where the destination network address and the destination transport
+   port are the ones in the SRTP packet.  It is assumed that, when
+   presented with this information, the key management returns a context
+   with the information as described in Section 3.2.
+
+   As noted above, SRTP and SRTCP by default share the bulk of the
+   parameters in the cryptographic context.  Thus, retrieving the crypto
+   context parameters for an SRTCP stream in practice may imply a
+   binding to the correspondent SRTP crypto context.  It is up to the
+   implementation to assure such binding, since the RTCP port may not be
+
+
+
+Baugher, et al.             Standards Track                    [Page 10]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   directly deducible from the RTP port only.  Alternatively, the key
+   management may choose to provide separate SRTP- and SRTCP- contexts,
+   duplicating the common parameters (such as master key(s)).  The
+   latter approach then also enables SRTP and SRTCP to use, e.g.,
+   distinct transforms, if so desired.  Similar considerations arise
+   when multiple SRTP streams, forming part of one single RTP session,
+   share keys and other parameters.
+
+   If no valid context can be found for a packet corresponding to a
+   certain context identifier, that packet MUST be discarded.
+
+3.3.  SRTP Packet Processing
+
+   The following applies to SRTP.  SRTCP is described in Section 3.4.
+
+   Assuming initialization of the cryptographic context(s) has taken
+   place via key management, the sender SHALL do the following to
+   construct an SRTP packet:
+
+   1. Determine which cryptographic context to use as described in
+      Section 3.2.3.
+
+   2. Determine the index of the SRTP packet using the rollover counter,
+      the highest sequence number in the cryptographic context, and the
+      sequence number in the RTP packet, as described in Section 3.3.1.
+
+   3. Determine the master key and master salt.  This is done using the
+      index determined in the previous step or the current MKI in the
+      cryptographic context, according to Section 8.1.
+
+   4. Determine the session keys and session salt (if they are used by
+      the transform) as described in Section 4.3, using master key,
+      master salt, key_derivation_rate, and session key-lengths in the
+      cryptographic context with the index, determined in Steps 2 and 3.
+
+   5. Encrypt the RTP payload to produce the Encrypted Portion of the
+      packet (see Section 4.1, for the defined ciphers).  This step uses
+      the encryption algorithm indicated in the cryptographic context,
+      the session encryption key and the session salt (if used) found in
+      Step 4 together with the index found in Step 2.
+
+   6. If the MKI indicator is set to one, append the MKI to the packet.
+
+   7. For message authentication, compute the authentication tag for the
+      Authenticated Portion of the packet, as described in Section 4.2.
+      This step uses the current rollover counter, the authentication
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 11]
+
+RFC 3711                          SRTP                        March 2004
+
+
+      algorithm indicated in the cryptographic context, and the session
+      authentication key found in Step 4.  Append the authentication tag
+      to the packet.
+
+   8. If necessary, update the ROC as in Section 3.3.1, using the packet
+      index determined in Step 2.
+
+   To authenticate and decrypt an SRTP packet, the receiver SHALL do the
+   following:
+
+   1. Determine which cryptographic context to use as described in
+      Section 3.2.3.
+
+   2. Run the algorithm in Section 3.3.1 to get the index of the SRTP
+      packet.  The algorithm uses the rollover counter and highest
+      sequence number in the cryptographic context with the sequence
+      number in the SRTP packet, as described in Section 3.3.1.
+
+   3. Determine the master key and master salt.  If the MKI indicator in
+      the context is set to one, use the MKI in the SRTP packet,
+      otherwise use the index from the previous step, according to
+      Section 8.1.
+
+   4. Determine the session keys, and session salt (if used by the
+      transform) as described in Section 4.3, using master key, master
+      salt, key_derivation_rate and session key-lengths in the
+      cryptographic context with the index, determined in Steps 2 and 3.
+
+   5. For message authentication and replay protection, first check if
+      the packet has been replayed (Section 3.3.2), using the Replay
+      List and the index as determined in Step 2.  If the packet is
+      judged to be replayed, then the packet MUST be discarded, and the
+      event SHOULD be logged.
+
+      Next, perform verification of the authentication tag, using the
+      rollover counter from Step 2, the authentication algorithm
+      indicated in the cryptographic context, and the session
+      authentication key from Step 4.  If the result is "AUTHENTICATION
+      FAILURE" (see Section 4.2), the packet MUST be discarded from
+      further processing and the event SHOULD be logged.
+
+   6. Decrypt the Encrypted Portion of the packet (see Section 4.1, for
+      the defined ciphers), using the decryption algorithm indicated in
+      the cryptographic context, the session encryption key and salt (if
+      used) found in Step 4 with the index from Step 2.
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 12]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   7. Update the rollover counter and highest sequence number, s_l, in
+      the cryptographic context as in Section 3.3.1, using the packet
+      index estimated in Step 2.  If replay protection is provided, also
+      update the Replay List as described in Section 3.3.2.
+
+   8. When present, remove the MKI and authentication tag fields from
+      the packet.
+
+3.3.1.  Packet Index Determination, and ROC, s_l Update
+
+   SRTP implementations use an "implicit" packet index for sequencing,
+   i.e., not all of the index is explicitly carried in the SRTP packet.
+   For the pre-defined transforms, the index i is used in replay
+   protection (Section 3.3.2), encryption (Section 4.1), message
+   authentication (Section 4.2), and for the key derivation (Section
+   4.3).
+
+   When the session starts, the sender side MUST set the rollover
+   counter, ROC, to zero.  Each time the RTP sequence number, SEQ, wraps
+   modulo 2^16, the sender side MUST increment ROC by one, modulo 2^32
+   (see security aspects below).  The sender's packet index is then
+   defined as
+
+      i = 2^16 * ROC + SEQ.
+
+   Receiver-side implementations use the RTP sequence number to
+   determine the correct index of a packet, which is the location of the
+   packet in the sequence of all SRTP packets.  A robust approach for
+   the proper use of a rollover counter requires its handling and use to
+   be well defined.  In particular, out-of-order RTP packets with
+   sequence numbers close to 2^16 or zero must be properly handled.
+
+   The index estimate is based on the receiver's locally maintained ROC
+   and s_l values.  At the setup of the session, the ROC MUST be set to
+   zero.  Receivers joining an on-going session MUST be given the
+   current ROC value using out-of-band signaling such as key-management
+   signaling.  Furthermore, the receiver SHALL initialize s_l to the RTP
+   sequence number (SEQ) of the first observed SRTP packet (unless the
+   initial value is provided by out of band signaling such as key
+   management).
+
+   On consecutive SRTP packets, the receiver SHOULD estimate the index
+   as
+         i = 2^16 * v + SEQ,
+
+   where v is chosen from the set { ROC-1, ROC, ROC+1 } (modulo 2^32)
+   such that i is closest (in modulo 2^48 sense) to the value 2^16 * ROC
+   + s_l (see Appendix A for pseudocode).
+
+
+
+Baugher, et al.             Standards Track                    [Page 13]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   After the packet has been processed and authenticated (when enabled
+   for SRTP packets for the session), the receiver MUST use v to
+   conditionally update its s_l and ROC variables as follows.  If
+   v=(ROC-1) mod 2^32, then there is no update to s_l or ROC.  If v=ROC,
+   then s_l is set to SEQ if and only if SEQ is larger than the current
+   s_l; there is no change to ROC.  If v=(ROC+1) mod 2^32, then s_l is
+   set to SEQ and ROC is set to v.
+
+   After a re-keying occurs (changing to a new master key), the rollover
+   counter always maintains its sequence of values, i.e., it MUST NOT be
+   reset to zero.
+
+   As the rollover counter is 32 bits long and the sequence number is 16
+   bits long, the maximum number of packets belonging to a given SRTP
+   stream that can be secured with the same key is 2^48 using the pre-
+   defined transforms.  After that number of SRTP packets have been sent
+   with a given (master or session) key, the sender MUST NOT send any
+   more packets with that key.  (There exists a similar limit for SRTCP,
+   which in practice may be more restrictive, see Section 9.2.)  This
+   limitation enforces a security benefit by providing an upper bound on
+   the amount of traffic that can pass before cryptographic keys are
+   changed.  Re-keying (see Section 8.1) MUST be triggered, before this
+   amount of traffic, and MAY be triggered earlier, e.g., for increased
+   security and access control to media.  Recurring key derivation by
+   means of a non-zero key_derivation_rate (see Section 4.3), also gives
+   stronger security but does not change the above absolute maximum
+   value.
+
+   On the receiver side, there is a caveat to updating s_l and ROC: if
+   message authentication is not present, neither the initialization of
+   s_l, nor the ROC update can be made completely robust.  The
+   receiver's "implicit index" approach works for the pre-defined
+   transforms as long as the reorder and loss of the packets are not too
+   great and bit-errors do not occur in unfortunate ways.  In
+   particular, 2^15 packets would need to be lost, or a packet would
+   need to be 2^15 packets out of sequence before synchronization is
+   lost.  Such drastic loss or reorder is likely to disrupt the RTP
+   application itself.
+
+   The algorithm for the index estimate and ROC update is a matter of
+   implementation, and should take into consideration the environment
+   (e.g., packet loss rate) and the cases when synchronization is likely
+   to be lost, e.g., when the initial sequence number (randomly chosen
+   by RTP) is not known in advance (not sent in the key management
+   protocol) but may be near to wrap modulo 2^16.
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 14]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   A more elaborate and more robust scheme than the one given above is
+   the handling of RTP's own "rollover counter", see Appendix A.1 of
+   [RFC3550].
+
+3.3.2.  Replay Protection
+
+   Secure replay protection is only possible when integrity protection
+   is present.  It is RECOMMENDED to use replay protection, both for RTP
+   and RTCP, as integrity protection alone cannot assure security
+   against replay attacks.
+
+   A packet is "replayed" when it is stored by an adversary, and then
+   re-injected into the network.  When message authentication is
+   provided, SRTP protects against such attacks through a Replay List.
+   Each SRTP receiver maintains a Replay List, which conceptually
+   contains the indices of all of the packets which have been received
+   and authenticated.  In practice, the list can use a "sliding window"
+   approach, so that a fixed amount of storage suffices for replay
+   protection.  Packet indices which lag behind the packet index in the
+   context by more than SRTP-WINDOW-SIZE can be assumed to have been
+   received, where SRTP-WINDOW-SIZE is a receiver-side, implementation-
+   dependent parameter and MUST be at least 64, but which MAY be set to
+   a higher value.
+
+   The receiver checks the index of an incoming packet against the
+   replay list and the window.  Only packets with index ahead of the
+   window, or, inside the window but not already received, SHALL be
+   accepted.
+
+   After the packet has been authenticated (if necessary the window is
+   first moved ahead), the replay list SHALL be updated with the new
+   index.
+
+   The Replay List can be efficiently implemented by using a bitmap to
+   represent which packets have been received, as described in the
+   Security Architecture for IP [RFC2401].
+
+3.4.  Secure RTCP
+
+   Secure RTCP follows the definition of Secure RTP.  SRTCP adds three
+   mandatory new fields (the SRTCP index, an "encrypt-flag", and the
+   authentication tag) and one optional field (the MKI) to the RTCP
+   packet definition.  The three mandatory fields MUST be appended to an
+   RTCP packet in order to form an equivalent SRTCP packet.  The added
+   fields follow any other profile-specific extensions.
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 15]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   According to Section 6.1 of [RFC3550], there is a REQUIRED packet
+   format for compound packets.  SRTCP MUST be given packets according
+   to that requirement in the sense that the first part MUST be a sender
+   report or a receiver report.  However, the RTCP encryption prefix (a
+   random 32-bit quantity) specified in that Section MUST NOT be used
+   since, as is stated there, it is only applicable to the encryption
+   method specified in [RFC3550] and is not needed by the cryptographic
+   mechanisms used in SRTP.
+
+      0                   1                   2                   3
+      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<+
+     |V=2|P|    RC   |   PT=SR or RR   |             length          | |
+     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+     |                         SSRC of sender                        | |
+   +>+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ |
+   | ~                          sender info                          ~ |
+   | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+   | ~                         report block 1                        ~ |
+   | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+   | ~                         report block 2                        ~ |
+   | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+   | ~                              ...                              ~ |
+   | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+   | |V=2|P|    SC   |  PT=SDES=202  |             length            | |
+   | +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ |
+   | |                          SSRC/CSRC_1                          | |
+   | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+   | ~                           SDES items                          ~ |
+   | +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ |
+   | ~                              ...                              ~ |
+   +>+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ |
+   | |E|                         SRTCP index                         | |
+   | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<+
+   | ~                     SRTCP MKI (OPTIONAL)                      ~ |
+   | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+   | :                     authentication tag                        : |
+   | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+   |                                                                   |
+   +-- Encrypted Portion                    Authenticated Portion -----+
+
+
+   Figure 2.  An example of the format of a Secure RTCP packet,
+   consisting of an underlying RTCP compound packet with a Sender Report
+   and SDES packet.
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 16]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   The Encrypted Portion of an SRTCP packet consists of the encryption
+   (Section 4.1) of the RTCP payload of the equivalent compound RTCP
+   packet, from the first RTCP packet, i.e., from the ninth (9) octet to
+   the end of the compound packet.  The Authenticated Portion of an
+   SRTCP packet consists of the entire equivalent (eventually compound)
+   RTCP packet, the E flag, and the SRTCP index (after any encryption
+   has been applied to the payload).
+
+   The added fields are:
+
+   E-flag: 1 bit, REQUIRED
+            The E-flag indicates if the current SRTCP packet is
+            encrypted or unencrypted.  Section 9.1 of [RFC3550] allows
+            the split of a compound RTCP packet into two lower-layer
+            packets, one to be encrypted and one to be sent in the
+            clear.  The E bit set to "1" indicates encrypted packet, and
+            "0" indicates non-encrypted packet.
+
+   SRTCP index: 31 bits, REQUIRED
+            The SRTCP index is a 31-bit counter for the SRTCP packet.
+            The index is explicitly included in each packet, in contrast
+            to the "implicit" index approach used for SRTP.  The SRTCP
+            index MUST be set to zero before the first SRTCP packet is
+            sent, and MUST be incremented by one, modulo 2^31, after
+            each SRTCP packet is sent.  In particular, after a re-key,
+            the SRTCP index MUST NOT be reset to zero again.
+
+   Authentication Tag: configurable length, REQUIRED
+            The authentication tag is used to carry message
+            authentication data.
+
+   MKI: configurable length, OPTIONAL
+            The MKI is the Master Key Indicator, and functions according
+            to the MKI definition in Section 3.
+
+   SRTCP uses the cryptographic context parameters and packet processing
+   of SRTP by default, with the following changes:
+
+   *  The receiver does not need to "estimate" the index, as it is
+      explicitly signaled in the packet.
+
+   *  Pre-defined SRTCP encryption is as specified in Section 4.1, but
+      using the definition of the SRTCP Encrypted Portion given in this
+      section, and using the SRTCP index as the index i.  The encryption
+      transform and related parameters SHALL by default be the same
+      selected for the protection of the associated SRTP stream(s),
+      while the NULL algorithm SHALL be applied to the RTCP packets not
+      to be encrypted.  SRTCP may have a different encryption transform
+
+
+
+Baugher, et al.             Standards Track                    [Page 17]
+
+RFC 3711                          SRTP                        March 2004
+
+
+      than the one used by the corresponding SRTP.  The expected use for
+      this feature is when the former has NULL-encryption and the latter
+      has a non NULL-encryption.
+
+   The E-flag is assigned a value by the sender depending on whether the
+   packet was encrypted or not.
+
+   *  SRTCP decryption is performed as in Section 4, but only if the E
+      flag is equal to 1.  If so, the Encrypted Portion is decrypted,
+      using the SRTCP index as the index i.  In case the E-flag is 0,
+      the payload is simply left unmodified.
+
+   *  SRTCP replay protection is as defined in Section 3.3.2, but using
+      the SRTCP index as the index i and a separate Replay List that is
+      specific to SRTCP.
+
+   *  The pre-defined SRTCP authentication tag is specified as in
+      Section 4.2, but with the Authenticated Portion of the SRTCP
+      packet given in this section (which includes the index).  The
+      authentication transform and related parameters (e.g., key size)
+      SHALL by default be the same as selected for the protection of the
+      associated SRTP stream(s).
+
+   *  In the last step of the processing, only the sender needs to
+      update the value of the SRTCP index by incrementing it modulo 2^31
+      and for security reasons the sender MUST also check the number of
+      SRTCP packets processed, see Section 9.2.
+
+   Message authentication for RTCP is REQUIRED, as it is the control
+   protocol (e.g., it has a BYE packet) for RTP.
+
+   Precautions must be taken so that the packet expansion in SRTCP (due
+   to the added fields) does not cause SRTCP messages to use more than
+   their share of RTCP bandwidth.  To avoid this, the following two
+   measures MUST be taken:
+
+   1. When initializing the RTCP variable "avg_rtcp_size" defined in
+      chapter 6.3 of [RFC3550], it MUST include the size of the fields
+      that will be added by SRTCP (index, E-bit, authentication tag, and
+      when present, the MKI).
+
+   2. When updating the "avg_rtcp_size" using the variable "packet_size"
+      (section 6.3.3 of [RFC3550]), the value of "packet_size" MUST
+      include the size of the additional fields added by SRTCP.
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 18]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   With these measures in place the SRTCP messages will not use more
+   than the allotted bandwidth.  The effect of the size of the added
+   fields on the SRTCP traffic will be that messages will be sent with
+   longer packet intervals.  The increase in the intervals will be
+   directly proportional to size of the added fields.  For the pre-
+   defined transforms, the size of the added fields will be at least 14
+   octets, and upper bounded depending on MKI and the authentication tag
+   sizes.
+
+4.  Pre-Defined Cryptographic Transforms
+
+   While there are numerous encryption and message authentication
+   algorithms that can be used in SRTP, below we define default
+   algorithms in order to avoid the complexity of specifying the
+   encodings for the signaling of algorithm and parameter identifiers.
+   The defined algorithms have been chosen as they fulfill the goals
+   listed in Section 2.  Recommendations on how to extend SRTP with new
+   transforms are given in Section 6.
+
+4.1.  Encryption
+
+   The following parameters are common to both pre-defined, non-NULL,
+   encryption transforms specified in this section.
+
+   *  BLOCK_CIPHER-MODE indicates the block cipher used and its mode of
+      operation
+   *  n_b is the bit-size of the block for the block cipher
+   *  k_e is the session encryption key
+   *  n_e is the bit-length of k_e
+   *  k_s is the session salting key
+   *  n_s is the bit-length of k_s
+   *  SRTP_PREFIX_LENGTH is the octet length of the keystream prefix, a
+      non-negative integer, specified by the message authentication code
+      in use.
+
+   The distinct session keys and salts for SRTP/SRTCP are by default
+   derived as specified in Section 4.3.
+
+   The encryption transforms defined in SRTP map the SRTP packet index
+   and secret key into a pseudo-random keystream segment.  Each
+   keystream segment encrypts a single RTP packet.  The process of
+   encrypting a packet consists of generating the keystream segment
+   corresponding to the packet, and then bitwise exclusive-oring that
+   keystream segment onto the payload of the RTP packet to produce the
+   Encrypted Portion of the SRTP packet.  In case the payload size is
+   not an integer multiple of n_b bits, the excess (least significant)
+   bits of the keystream are simply discarded.  Decryption is done the
+   same way, but swapping the roles of the plaintext and ciphertext.
+
+
+
+Baugher, et al.             Standards Track                    [Page 19]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   +----+   +------------------+---------------------------------+
+   | KG |-->| Keystream Prefix |          Keystream Suffix       |---+
+   +----+   +------------------+---------------------------------+   |
+                                                                     |
+                               +---------------------------------+   v
+                               |     Payload of RTP Packet       |->(*)
+                               +---------------------------------+   |
+                                                                     |
+                               +---------------------------------+   |
+                               | Encrypted Portion of SRTP Packet|<--+
+                               +---------------------------------+
+
+   Figure 3: Default SRTP Encryption Processing.  Here KG denotes the
+   keystream generator, and (*) denotes bitwise exclusive-or.
+
+   The definition of how the keystream is generated, given the index,
+   depends on the cipher and its mode of operation.  Below, two such
+   keystream generators are defined.  The NULL cipher is also defined,
+   to be used when encryption of RTP is not required.
+
+   The SRTP definition of the keystream is illustrated in Figure 3.  The
+   initial octets of each keystream segment MAY be reserved for use in a
+   message authentication code, in which case the keystream used for
+   encryption starts immediately after the last reserved octet.  The
+   initial reserved octets are called the "keystream prefix" (not to be
+   confused with the "encryption prefix" of [RFC3550, Section 6.1]), and
+   the remaining octets are called the "keystream suffix".  The
+   keystream prefix MUST NOT be used for encryption.  The process is
+   illustrated in Figure 3.
+
+   The number of octets in the keystream prefix is denoted as
+   SRTP_PREFIX_LENGTH.  The keystream prefix is indicated by a positive,
+   non-zero value of SRTP_PREFIX_LENGTH.  This means that, even if
+   confidentiality is not to be provided, the keystream generator output
+   may still need to be computed for packet authentication, in which
+   case the default keystream generator (mode) SHALL be used.
+
+   The default cipher is the Advanced Encryption Standard (AES) [AES],
+   and we define two modes of running AES, (1) Segmented Integer Counter
+   Mode AES and (2) AES in f8-mode.  In the remainder of this section,
+   let E(k,x) be AES applied to key k and input block x.
+
+
+
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 20]
+
+RFC 3711                          SRTP                        March 2004
+
+
+4.1.1.  AES in Counter Mode
+
+   Conceptually, counter mode [AES-CTR] consists of encrypting
+   successive integers.  The actual definition is somewhat more
+   complicated, in order to randomize the starting point of the integer
+   sequence.  Each packet is encrypted with a distinct keystream
+   segment, which SHALL be computed as follows.
+
+   A keystream segment SHALL be the concatenation of the 128-bit output
+   blocks of the AES cipher in the encrypt direction, using key k = k_e,
+   in which the block indices are in increasing order.  Symbolically,
+   each keystream segment looks like
+
+      E(k, IV) || E(k, IV + 1 mod 2^128) || E(k, IV + 2 mod 2^128) ...
+
+   where the 128-bit integer value IV SHALL be defined by the SSRC, the
+   SRTP packet index i, and the SRTP session salting key k_s, as below.
+
+      IV = (k_s * 2^16) XOR (SSRC * 2^64) XOR (i * 2^16)
+
+   Each of the three terms in the XOR-sum above is padded with as many
+   leading zeros as needed to make the operation well-defined,
+   considered as a 128-bit value.
+
+   The inclusion of the SSRC allows the use of the same key to protect
+   distinct SRTP streams within the same RTP session, see the security
+   caveats in Section 9.1.
+
+   In the case of SRTCP, the SSRC of the first header of the compound
+   packet MUST be used, i SHALL be the 31-bit SRTCP index and k_e, k_s
+   SHALL be replaced by the SRTCP encryption session key and salt.
+
+   Note that the initial value, IV, is fixed for each packet and is
+   formed by "reserving" 16 zeros in the least significant bits for the
+   purpose of the counter.  The number of blocks of keystream generated
+   for any fixed value of IV MUST NOT exceed 2^16 to avoid keystream
+   re-use, see below.  The AES has a block size of 128 bits, so 2^16
+   output blocks are sufficient to generate the 2^23 bits of keystream
+   needed to encrypt the largest possible RTP packet (except for IPv6
+   "jumbograms" [RFC2675], which are not likely to be used for RTP-based
+   multimedia traffic).  This restriction on the maximum bit-size of the
+   packet that can be encrypted ensures the security of the encryption
+   method by limiting the effectiveness of probabilistic attacks [BDJR].
+
+   For a particular Counter Mode key, each IV value used as an input
+   MUST be distinct, in order to avoid the security exposure of a two-
+   time pad situation (Section 9.1).  To satisfy this constraint, an
+   implementation MUST ensure that the combination of the SRTP packet
+
+
+
+Baugher, et al.             Standards Track                    [Page 21]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   index of ROC || SEQ, and the SSRC used in the construction of the IV
+   are distinct for any particular key.  The failure to ensure this
+   uniqueness could be catastrophic for Secure RTP.  This is in contrast
+   to the situation for RTP itself, which may be able to tolerate such
+   failures.  It is RECOMMENDED that, if a dedicated security module is
+   present, the RTP sequence numbers and SSRC either be generated or
+   checked by that module (i.e., sequence-number and SSRC processing in
+   an SRTP system needs to be protected as well as the key).
+
+4.1.2.  AES in f8-mode
+
+   To encrypt UMTS (Universal Mobile Telecommunications System, as 3G
+   networks) data, a solution (see [f8-a] [f8-b]) known as the f8-
+   algorithm has been developed.  On a high level, the proposed scheme
+   is a variant of Output Feedback Mode (OFB) [HAC], with a more
+   elaborate initialization and feedback function.  As in normal OFB,
+   the core consists of a block cipher.  We also define here the use of
+   AES as a block cipher to be used in what we shall call "f8-mode of
+   operation" RTP encryption.  The AES f8-mode SHALL use the same
+   default sizes for session key and salt as AES counter mode.
+
+   Figure 4 shows the structure of block cipher, E, running in f8-mode.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 22]
+
+RFC 3711                          SRTP                        March 2004
+
+
+                    IV
+                    |
+                    v
+                +------+
+                |      |
+           +--->|  E   |
+           |    +------+
+           |        |
+     m -> (*)       +-----------+-------------+--  ...     ------+
+           |    IV' |           |             |                  |
+           |        |   j=1 -> (*)    j=2 -> (*)   ...  j=L-1 ->(*)
+           |        |           |             |                  |
+           |        |      +-> (*)       +-> (*)   ...      +-> (*)
+           |        |      |    |        |    |             |    |
+           |        v      |    v        |    v             |    v
+           |    +------+   | +------+    | +------+         | +------+
+    k_e ---+--->|  E   |   | |  E   |    | |  E   |         | |  E   |
+                |      |   | |      |    | |      |         | |      |
+                +------+   | +------+    | +------+         | +------+
+                    |      |    |        |    |             |    |
+                    +------+    +--------+    +--  ...  ----+    |
+                    |           |             |                  |
+                    v           v             v                  v
+                   S(0)        S(1)          S(2)  . . .       S(L-1)
+
+   Figure 4.  f8-mode of operation (asterisk, (*), denotes bitwise XOR).
+   The figure represents the KG in Figure 3, when AES-f8 is used.
+
+4.1.2.1.  f8 Keystream Generation
+
+   The Initialization Vector (IV) SHALL be determined as described in
+   Section 4.1.2.2 (and in Section 4.1.2.3 for SRTCP).
+
+   Let IV', S(j), and m denote n_b-bit blocks.  The keystream,
+   S(0) ||... || S(L-1), for an N-bit message SHALL be defined by
+   setting IV' = E(k_e XOR m, IV), and S(-1) = 00..0.  For
+   j = 0,1,..,L-1 where L = N/n_b (rounded up to nearest integer if it
+   is not already an integer) compute
+
+            S(j) = E(k_e, IV' XOR j XOR S(j-1))
+
+   Notice that the IV is not used directly.  Instead it is fed through E
+   under another key to produce an internal, "masked" value (denoted
+   IV') to prevent an attacker from gaining known input/output pairs.
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 23]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   The role of the internal counter, j, is to prevent short keystream
+   cycles.  The value of the key mask m SHALL be
+
+           m = k_s || 0x555..5,
+
+   i.e., the session salting key, appended by the binary pattern 0101..
+   to fill out the entire desired key size, n_e.
+
+   The sender SHOULD NOT generate more than 2^32 blocks, which is
+   sufficient to generate 2^39 bits of keystream.  Unlike counter mode,
+   there is no absolute threshold above (below) which f8 is guaranteed
+   to be insecure (secure).  The above bound has been chosen to limit,
+   with sufficient security margin, the probability of degenerative
+   behavior in the f8 keystream generation.
+
+4.1.2.2.  f8 SRTP IV Formation
+
+   The purpose of the following IV formation is to provide a feature
+   which we call implicit header authentication (IHA), see Section 9.5.
+
+   The SRTP IV for 128-bit block AES-f8 SHALL be formed in the following
+   way:
+
+        IV = 0x00 || M || PT || SEQ || TS || SSRC || ROC
+
+   M, PT, SEQ, TS, SSRC SHALL be taken from the RTP header; ROC is from
+   the cryptographic context.
+
+   The presence of the SSRC as part of the IV allows AES-f8 to be used
+   when a master key is shared between multiple streams within the same
+   RTP session, see Section 9.1.
+
+4.1.2.3.  f8 SRTCP IV Formation
+
+   The SRTCP IV for 128-bit block AES-f8 SHALL be formed in the
+   following way:
+
+   IV= 0..0 || E || SRTCP index || V || P || RC || PT || length || SSRC
+
+   where V, P, RC, PT, length, SSRC SHALL be taken from the first header
+   in the RTCP compound packet.  E and SRTCP index are the 1-bit and
+   31-bit fields added to the packet.
+
+
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 24]
+
+RFC 3711                          SRTP                        March 2004
+
+
+4.1.3.  NULL Cipher
+
+   The NULL cipher is used when no confidentiality for RTP/RTCP is
+   requested.  The keystream can be thought of as "000..0", i.e., the
+   encryption SHALL simply copy the plaintext input into the ciphertext
+   output.
+
+4.2.  Message Authentication and Integrity
+
+   Throughout this section, M will denote data to be integrity
+   protected.  In the case of SRTP, M SHALL consist of the Authenticated
+   Portion of the packet (as specified in Figure 1) concatenated with
+   the ROC, M = Authenticated Portion || ROC; in the case of SRTCP, M
+   SHALL consist of the Authenticated Portion (as specified in Figure 2)
+   only.
+
+   Common parameters:
+
+   *  AUTH_ALG is the authentication algorithm
+   *  k_a is the session message authentication key
+   *  n_a is the bit-length of the authentication key
+   *  n_tag is the bit-length of the output authentication tag
+   *  SRTP_PREFIX_LENGTH is the octet length of the keystream prefix as
+      defined above, a parameter of AUTH_ALG
+
+   The distinct session authentication keys for SRTP/SRTCP are by
+   default derived as specified in Section 4.3.
+
+   The values of n_a, n_tag, and SRTP_PREFIX_LENGTH MUST be fixed for
+   any particular fixed value of the key.
+
+   We describe the process of computing authentication tags as follows.
+   The sender computes the tag of M and appends it to the packet.  The
+   SRTP receiver verifies a message/authentication tag pair by computing
+   a new authentication tag over M using the selected algorithm and key,
+   and then compares it to the tag associated with the received message.
+   If the two tags are equal, then the message/tag pair is valid;
+   otherwise, it is invalid and the error audit message "AUTHENTICATION
+   FAILURE" MUST be returned.
+
+4.2.1.  HMAC-SHA1
+
+   The pre-defined authentication transform for SRTP is HMAC-SHA1
+   [RFC2104].  With HMAC-SHA1, the SRTP_PREFIX_LENGTH (Figure 3) SHALL
+   be 0.  For SRTP (respectively SRTCP), the HMAC SHALL be applied to
+   the session authentication key and M as specified above, i.e.,
+   HMAC(k_a, M).  The HMAC output SHALL then be truncated to the n_tag
+   left-most bits.
+
+
+
+Baugher, et al.             Standards Track                    [Page 25]
+
+RFC 3711                          SRTP                        March 2004
+
+
+4.3.  Key Derivation
+
+4.3.1.  Key Derivation Algorithm
+
+   Regardless of the encryption or message authentication transform that
+   is employed (it may be an SRTP pre-defined transform or newly
+   introduced according to Section 6), interoperable SRTP
+   implementations MUST use the SRTP key derivation to generate session
+   keys.  Once the key derivation rate is properly signaled at the start
+   of the session, there is no need for extra communication between the
+   parties that use SRTP key derivation.
+
+                         packet index ---+
+                                         |
+                                         v
+               +-----------+ master  +--------+ session encr_key
+               | ext       | key     |        |---------->
+               | key mgmt  |-------->|  key   | session auth_key
+               | (optional |         | deriv  |---------->
+               | rekey)    |-------->|        | session salt_key
+               |           | master  |        |---------->
+               +-----------+ salt    +--------+
+
+   Figure 5: SRTP key derivation.
+
+   At least one initial key derivation SHALL be performed by SRTP, i.e.,
+   the first key derivation is REQUIRED.  Further applications of the
+   key derivation MAY be performed, according to the
+   "key_derivation_rate" value in the cryptographic context.  The key
+   derivation function SHALL initially be invoked before the first
+   packet and then, when r > 0, a key derivation is performed whenever
+   index mod r equals zero.  This can be thought of as "refreshing" the
+   session keys.  The value of "key_derivation_rate" MUST be kept fixed
+   for the lifetime of the associated master key.
+
+   Interoperable SRTP implementations MAY also derive session salting
+   keys for encryption transforms, as is done in both of the pre-
+   defined transforms.
+
+   Let m and n be positive integers.  A pseudo-random function family is
+   a set of keyed functions {PRF_n(k,x)} such that for the (secret)
+   random key k, given m-bit x, PRF_n(k,x) is an n-bit string,
+   computationally indistinguishable from random n-bit strings, see
+   [HAC].  For the purpose of key derivation in SRTP, a secure PRF with
+   m = 128 (or more) MUST be used, and a default PRF transform is
+   defined in Section 4.3.3.
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 26]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   Let "a DIV t" denote integer division of a by t, rounded down, and
+   with the convention that "a DIV 0 = 0" for all a.  We also make the
+   convention of treating "a DIV t" as a bit string of the same length
+   as a, and thus "a DIV t" will in general have leading zeros.
+
+   Key derivation SHALL be defined as follows in terms of <label>, an
+   8-bit constant (see below), master_salt and key_derivation_rate, as
+   determined in the cryptographic context, and index, the packet index
+   (i.e., the 48-bit ROC || SEQ for SRTP):
+
+   *  Let r = index DIV key_derivation_rate (with DIV as defined above).
+
+   *  Let key_id = <label> || r.
+
+   *  Let x = key_id XOR master_salt, where key_id and master_salt are
+      aligned so that their least significant bits agree (right-
+      alignment).
+
+   <label> MUST be unique for each type of key to be derived.  We
+   currently define <label> 0x00 to 0x05 (see below), and future
+   extensions MAY specify new values in the range 0x06 to 0xff for other
+   purposes.  The n-bit SRTP key (or salt) for this packet SHALL then be
+   derived from the master key, k_master as follows:
+
+      PRF_n(k_master, x).
+
+   (The PRF may internally specify additional formatting and padding of
+   x, see e.g., Section 4.3.3 for the default PRF.)
+
+   The session keys and salt SHALL now be derived using:
+
+   - k_e (SRTP encryption): <label> = 0x00, n = n_e.
+
+   - k_a (SRTP message authentication): <label> = 0x01, n = n_a.
+
+   - k_s (SRTP salting key): <label> = 0x02, n = n_s.
+
+   where n_e, n_s, and n_a are from the cryptographic context.
+
+   The master key and master salt MUST be random, but the master salt
+   MAY be public.
+
+   Note that for a key_derivation_rate of 0, the application of the key
+   derivation SHALL take place exactly once.
+
+   The definition of DIV above is purely for notational convenience.
+   For a non-zero t among the set of allowed key derivation rates, "a
+   DIV t" can be implemented as a right-shift by the base-2 logarithm of
+
+
+
+Baugher, et al.             Standards Track                    [Page 27]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   t.  The derivation operation is further facilitated if the rates are
+   chosen to be powers of 256, but that granularity was considered too
+   coarse to be a requirement of this specification.
+
+   The upper limit on the number of packets that can be secured using
+   the same master key (see Section 9.2) is independent of the key
+   derivation.
+
+4.3.2.  SRTCP Key Derivation
+
+   SRTCP SHALL by default use the same master key (and master salt) as
+   SRTP.  To do this securely, the following changes SHALL be done to
+   the definitions in Section 4.3.1 when applying session key derivation
+   for SRTCP.
+
+   Replace the SRTP index by the 32-bit quantity: 0 || SRTCP index
+   (i.e., excluding the E-bit, replacing it with a fixed 0-bit), and use
+   <label> = 0x03 for the SRTCP encryption key, <label> = 0x04 for the
+   SRTCP authentication key, and, <label> = 0x05 for the SRTCP salting
+   key.
+
+4.3.3.  AES-CM PRF
+
+   The currently defined PRF, keyed by 128, 192, or 256 bit master key,
+   has input block size m = 128 and can produce n-bit outputs for n up
+   to 2^23.  PRF_n(k_master,x) SHALL be AES in Counter Mode as described
+   in Section 4.1.1, applied to key k_master, and IV equal to (x*2^16),
+   and with the output keystream truncated to the n first (left-most)
+   bits.  (Requiring n/128, rounded up, applications of AES.)
+
+5.  Default and mandatory-to-implement Transforms
+
+   The default transforms also are mandatory-to-implement transforms in
+   SRTP.  Of course, "mandatory-to-implement" does not imply
+   "mandatory-to-use".  Table 1 summarizes the pre-defined transforms.
+   The default values below are valid for the pre-defined transforms.
+
+                         mandatory-to-impl.   optional     default
+
+   encryption            AES-CM, NULL         AES-f8       AES-CM
+   message integrity     HMAC-SHA1              -          HMAC-SHA1
+   key derivation (PRF)  AES-CM                 -          AES-CM
+
+   Table 1: Mandatory-to-implement, optional and default transforms in
+   SRTP and SRTCP.
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 28]
+
+RFC 3711                          SRTP                        March 2004
+
+
+5.1.  Encryption: AES-CM and NULL
+
+   AES running in Segmented Integer Counter Mode, as defined in Section
+   4.1.1, SHALL be the default encryption algorithm.  The default key
+   lengths SHALL be 128-bit for the session encryption key (n_e).  The
+   default session salt key-length (n_s) SHALL be 112 bits.
+
+   The NULL cipher SHALL also be mandatory-to-implement.
+
+5.2.  Message Authentication/Integrity: HMAC-SHA1
+
+   HMAC-SHA1, as defined in Section 4.2.1, SHALL be the default message
+   authentication code.  The default session authentication key-length
+   (n_a) SHALL be 160 bits, the default authentication tag length
+   (n_tag) SHALL be 80 bits, and the SRTP_PREFIX_LENGTH SHALL be zero
+   for HMAC-SHA1.  In addition, for SRTCP, the pre-defined HMAC-SHA1
+   MUST NOT be applied with a value of n_tag, nor n_a, that are smaller
+   than these defaults.  For SRTP, smaller values are NOT RECOMMENDED,
+   but MAY be used after careful consideration of the issues in Section
+   7.5 and 9.5.
+
+5.3.  Key Derivation: AES-CM PRF
+
+   The AES Counter Mode based key derivation and PRF defined in Sections
+   4.3.1 to 4.3.3, using a 128-bit master key, SHALL be the default
+   method for generating session keys.  The default master salt length
+   SHALL be 112 bits and the default key-derivation rate SHALL be zero.
+
+6.  Adding SRTP Transforms
+
+   Section 4 provides examples of the level of detail needed for
+   defining transforms.  Whenever a new transform is to be added to
+   SRTP, a companion standard track RFC MUST be written to exactly
+   define how the new transform can be used with SRTP (and SRTCP).  Such
+   a companion RFC SHOULD avoid overlap with the SRTP protocol document.
+   Note however, that it MAY be necessary to extend the SRTP or SRTCP
+   cryptographic context definition with new parameters (including fixed
+   or default values), add steps to the packet processing, or even add
+   fields to the SRTP/SRTCP packets.  The companion RFC SHALL explain
+   any known issues regarding interactions between the transform and
+   other aspects of SRTP.
+
+   Each new transform document SHOULD specify its key attributes, e.g.,
+   size of keys (minimum, maximum, recommended), format of keys,
+   recommended/required processing of input keying material,
+   requirements/recommendations on key lifetime, re-keying and key
+   derivation, whether sharing of keys between SRTP and SRTCP is allowed
+   or not, etc.
+
+
+
+Baugher, et al.             Standards Track                    [Page 29]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   An added message integrity transform SHOULD define a minimum
+   acceptable key/tag size for SRTCP, equivalent in strength to the
+   minimum values as defined in Section 5.2.
+
+7.  Rationale
+
+   This section explains the rationale behind several important features
+   of SRTP.
+
+7.1.  Key derivation
+
+   Key derivation reduces the burden on the key establishment.  As many
+   as six different keys are needed per crypto context (SRTP and SRTCP
+   encryption keys and salts, SRTP and SRTCP authentication keys), but
+   these are derived from a single master key in a cryptographically
+   secure way.  Thus, the key management protocol needs to exchange only
+   one master key (plus master salt when required), and then SRTP itself
+   derives all the necessary session keys (via the first, mandatory
+   application of the key derivation function).
+
+   Multiple applications of the key derivation function are optional,
+   but will give security benefits when enabled.  They prevent an
+   attacker from obtaining large amounts of ciphertext produced by a
+   single fixed session key.  If the attacker was able to collect a
+   large amount of ciphertext for a certain session key, he might be
+   helped in mounting certain attacks.
+
+   Multiple applications of the key derivation function provide
+   backwards and forward security in the sense that a compromised
+   session key does not compromise other session keys derived from the
+   same master key.  This means that the attacker who is able to recover
+   a certain session key, is anyway not able to have access to messages
+   secured under previous and later session keys (derived from the same
+   master key).  (Note that, of course, a leaked master key reveals all
+   the session keys derived from it.)
+
+   Considerations arise with high-rate key refresh, especially in large
+   multicast settings, see Section 11.
+
+7.2.  Salting key
+
+   The master salt guarantees security against off-line key-collision
+   attacks on the key derivation that might otherwise reduce the
+   effective key size [MF00].
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 30]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   The derived session salting key used in the encryption, has been
+   introduced to protect against some attacks on additive stream
+   ciphers, see Section 9.2.  The explicit inclusion method of the salt
+   in the IV has been selected for ease of hardware implementation.
+
+7.3.  Message Integrity from Universal Hashing
+
+   The particular definition of the keystream given in Section 4.1 (the
+   keystream prefix) is to give provision for particular universal hash
+   functions, suitable for message authentication in the Wegman-Carter
+   paradigm [WC81].  Such functions are provably secure, simple, quick,
+   and especially appropriate for Digital Signal Processors and other
+   processors with a fast multiply operation.
+
+   No authentication transforms are currently provided in SRTP other
+   than HMAC-SHA1.  Future transforms, like the above mentioned
+   universal hash functions, MAY be added following the guidelines in
+   Section 6.
+
+7.4.  Data Origin Authentication Considerations
+
+   Note that in pair-wise communications, integrity and data origin
+   authentication are provided together.  However, in group scenarios
+   where the keys are shared between members, the MAC tag only proves
+   that a member of the group sent the packet, but does not prevent
+   against a member impersonating another.  Data origin authentication
+   (DOA) for multicast and group RTP sessions is a hard problem that
+   needs a solution; while some promising proposals are being
+   investigated [PCST1] [PCST2], more work is needed to rigorously
+   specify these technologies.  Thus SRTP data origin authentication in
+   groups is for further study.
+
+   DOA can be done otherwise using signatures.  However, this has high
+   impact in terms of bandwidth and processing time, therefore we do not
+   offer this form of authentication in the pre-defined packet-integrity
+   transform.
+
+   The presence of mixers and translators does not allow data origin
+   authentication in case the RTP payload and/or the RTP header are
+   manipulated.  Note that these types of middle entities also disrupt
+   end-to-end confidentiality (as the IV formation depends e.g., on the
+   RTP header preservation).  A certain trust model may choose to trust
+   the mixers/translators to decrypt/re-encrypt the media (this would
+   imply breaking the end-to-end security, with related security
+   implications).
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 31]
+
+RFC 3711                          SRTP                        March 2004
+
+
+7.5.  Short and Zero-length Message Authentication
+
+   As shown in Figure 1, the authentication tag is RECOMMENDED in SRTP.
+   A full 80-bit authentication-tag SHOULD be used, but a shorter tag or
+   even a zero-length tag (i.e., no message authentication) MAY be used
+   under certain conditions to support either of the following two
+   application environments.
+
+      1. Strong authentication can be impractical in environments where
+         bandwidth preservation is imperative.  An important special
+         case is wireless communication systems, in which bandwidth is a
+         scarce and expensive resource.  Studies have shown that for
+         certain applications and link technologies, additional bytes
+         may result in a significant decrease in spectrum efficiency
+         [SWO].  Considerable effort has been made to design IP header
+         compression techniques to improve spectrum efficiency
+         [RFC3095].  A typical voice application produces 20 byte
+         samples, and the RTP, UDP and IP headers need to be jointly
+         compressed to one or two bytes on average in order to obtain
+         acceptable wireless bandwidth economy [RFC3095].  In this case,
+         strong authentication would impose nearly fifty percent
+         overhead.
+
+      2. Authentication is impractical for applications that use data
+         links with fixed-width fields that cannot accommodate the
+         expansion due to the authentication tag.  This is the case for
+         some important existing wireless channels.  For example, zero-
+         byte header compression is used to adapt EVRC/SMV voice with
+         the legacy IS-95 bearer channel in CDMA2000 VoIP services.  It
+         was found that not a single additional octet could be added to
+         the data, which motivated the creation of a zero-byte profile
+         for ROHC [RFC3242].
+
+   A short tag is secure for a restricted set of applications.  Consider
+   a voice telephony application, for example, such as a G.729 audio
+   codec with a 20-millisecond packetization interval, protected by a
+   32-bit message authentication tag.  The likelihood of any given
+   packet being successfully forged is only one in 2^32.  Thus an
+   adversary can control no more than 20 milliseconds of audio output
+   during a 994-day period, on average.  In contrast, the effect of a
+   single forged packet can be much larger if the application is
+   stateful.  A codec that uses relative or predictive compression
+   across packets will propagate the maliciously generated state,
+   affecting a longer duration of output.
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 32]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   Certainly not all SRTP or telephony applications meet the criteria
+   for short or zero-length authentication tags.  Section 9.5.1
+   discusses the risks of weak or no message authentication, and section
+   9.5 describes the circumstances when it is acceptable and when it is
+   unacceptable.
+
+8.  Key Management Considerations
+
+   There are emerging key management standards [MIKEY] [KEYMGT] [SDMS]
+   for establishing an SRTP cryptographic context (e.g., an SRTP master
+   key).  Both proprietary and open-standard key management methods are
+   likely to be used for telephony applications [MIKEY] [KINK] and
+   multicast applications [GDOI].  This section provides guidance for
+   key management systems that service SRTP session.
+
+   For initialization, an interoperable SRTP implementation SHOULD be
+   given the SSRC and MAY be given the initial RTP sequence number for
+   the RTP stream by key management (thus, key management has a
+   dependency on RTP operational parameters).  Sending the RTP sequence
+   number in the key management may be useful e.g., when the initial
+   sequence number is close to wrapping (to avoid synchronization
+   problems), and to communicate the current sequence number to a
+   joining endpoint (to properly initialize its replay list).
+
+   If the pre-defined transforms are used, SRTP allows sharing of the
+   same master key between SRTP/SRTCP streams belonging to the same RTP
+   session.
+
+   First, sharing between SRTP streams belonging to the same RTP session
+   is secure if the design of the synchronization mechanism, i.e., the
+   IV, avoids keystream re-use (the two-time pad, Section 9.1).  This is
+   taken care of by the fact that RTP provides for unique SSRCs for
+   streams belonging to the same RTP session.  See Section 9.1 for
+   further discussion.
+
+   Second, sharing between SRTP and the corresponding SRTCP is secure.
+   The fact that an SRTP stream and its associated SRTCP stream both
+   carry the same SSRC does not constitute a problem for the two-time
+   pad due to the key derivation.  Thus, SRTP and SRTCP corresponding to
+   one RTP session MAY share master keys (as they do by default).
+
+   Note that message authentication also has a dependency on SSRC
+   uniqueness that is unrelated to the problem of keystream reuse: SRTP
+   streams authenticated under the same key MUST have a distinct SSRC in
+   order to identify the sender of the message.  This requirement is
+   needed because the SSRC is the cryptographically authenticated field
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 33]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   used to distinguish between different SRTP streams.  Were two streams
+   to use identical SSRC values, then an adversary could substitute
+   messages from one stream into the other without detection.
+
+   SRTP/SRTCP MUST NOT share master keys under any other circumstances
+   than the ones given above, i.e., between SRTP and its corresponding
+   SRTCP, and, between streams belonging to the same RTP session.
+
+8.1.  Re-keying
+
+   The recommended way for a particular key management system to provide
+   re-key within SRTP is by associating a master key in a crypto context
+   with an MKI.
+
+   This provides for easy master key retrieval (see Scenarios in Section
+   11), but has the disadvantage of adding extra bits to each packet.
+   As noted in Section 7.5, some wireless links do not cater for added
+   bits, therefore SRTP also defines a more economic way of triggering
+   re-keying, via use of <From, To>, which works in some specific,
+   simple scenarios (see Section 8.1.1).
+
+   SRTP senders SHALL count the amount of SRTP and SRTCP traffic being
+   used for a master key and invoke key management to re-key if needed
+   (Section 9.2).  These interactions are defined by the key management
+   interface to SRTP and are not defined by this protocol specification.
+
+8.1.1.  Use of the <From, To> for re-keying
+
+   In addition to the use of the MKI, SRTP defines another optional
+   mechanism for master key retrieval, the <From, To>.  The <From, To>
+   specifies the range of SRTP indices (a pair of sequence number and
+   ROC) within which a certain master key is valid, and is (when used)
+   part of the crypto context.  By looking at the 48-bit SRTP index of
+   the current SRTP packet, the corresponding master key can be found by
+   determining which From-To interval it belongs to.  For SRTCP, the
+   most recently observed/used SRTP index (which can be obtained from
+   the cryptographic context) is used for this purpose, even though
+   SRTCP has its own (31-bit) index (see caveat below).
+
+   This method, compared to the MKI, has the advantage of identifying
+   the master key and defining its lifetime without adding extra bits to
+   each packet.  This could be useful, as already noted, for some
+   wireless links that do not cater for added bits.  However, its use
+   SHOULD be limited to specific, very simple scenarios.  We recommend
+   to limit its use when the RTP session is a simple unidirectional or
+   bi-directional stream.  This is because in case of multiple streams,
+   it is difficult to trigger the re-key based on the <From, To> of a
+   single RTP stream. For example, if several streams share a master
+
+
+
+Baugher, et al.             Standards Track                    [Page 34]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   key, there is no simple one-to-one correspondence between the index
+   sequence space of a certain stream, and the index sequence space on
+   which the <From, To> values are based.  Consequently, when a master
+   key is shared between streams, one of these streams MUST be
+   designated by key management as the one whose index space defines the
+   re-keying points.  Also, the re-key triggering on SRTCP is based on
+   the correspondent SRTP stream, i.e., when the SRTP stream changes the
+   master key, so does the correspondent SRTCP.  This becomes obviously
+   more and more complex with multiple streams.
+
+   The default values for the <From, To> are "from the first observed
+   packet" and "until further notice".  However, the maximum limit of
+   SRTP/SRTCP packets that are sent under each given master/session key
+   (Section 9.2) MUST NOT be exceeded.
+
+   In case the <From, To> is used as key retrieval, then the MKI is not
+   inserted in the packet (and its indicator in the crypto context is
+   zero).  However, using the MKI does not exclude using <From, To> key
+   lifetime simultaneously.  This can for instance be useful to signal
+   at the sender side at which point in time an MKI is to be made
+   active.
+
+8.2.  Key Management parameters
+
+   The table below lists all SRTP parameters that key management can
+   supply.  For reference, it also provides a summary of the default and
+   mandatory-to-support values for an SRTP implementation as described
+   in Section 5.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 35]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   Parameter                     Mandatory-to-support    Default
+   ---------                     --------------------    -------
+
+   SRTP and SRTCP encr transf.       AES_CM, NULL         AES_CM
+   (Other possible values: AES_f8)
+
+   SRTP and SRTCP auth transf.       HMAC-SHA1           HMAC-SHA1
+
+   SRTP and SRTCP auth params:
+     n_tag (tag length)                 80                 80
+     SRTP prefix_length                  0                  0
+
+   Key derivation PRF                 AES_CM              AES_CM
+
+   Key material params
+   (for each master key):
+     master key length                 128                128
+     n_e (encr session key length)     128                128
+     n_a (auth session key length)     160                160
+     master salt key
+     length of the master salt         112                112
+     n_s (session salt key length)     112                112
+     key derivation rate                 0                  0
+
+     key lifetime
+        SRTP-packets-max-lifetime      2^48               2^48
+        SRTCP-packets-max-lifetime     2^31               2^31
+        from-to-lifetime <From, To>
+     MKI indicator                       0                 0
+     length of the MKI                   0                 0
+     value of the MKI
+
+   Crypto context index params:
+     SSRC value
+     ROC
+     SEQ
+     SRTCP Index
+     Transport address
+     Port number
+
+   Relation to other RTP profiles:
+     sender's order between FEC and SRTP FEC-SRTP      FEC-SRTP
+     (see Section 10)
+
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 36]
+
+RFC 3711                          SRTP                        March 2004
+
+
+9. Security Considerations
+
+9.1.  SSRC collision and two-time pad
+
+   Any fixed keystream output, generated from the same key and index
+   MUST only be used to encrypt once.  Re-using such keystream (jokingly
+   called a "two-time pad" system by cryptographers), can seriously
+   compromise security.  The NSA's VENONA project [C99] provides a
+   historical example of such a compromise.  It is REQUIRED that
+   automatic key management be used for establishing and maintaining
+   SRTP and SRTCP keying material; this requirement is to avoid
+   keystream reuse, which is more likely to occur with manual key
+   management.  Furthermore, in SRTP, a "two-time pad" is avoided by
+   requiring the key, or some other parameter of cryptographic
+   significance, to be unique per RTP/RTCP stream and packet.  The pre-
+   defined SRTP transforms accomplish packet-uniqueness by including the
+   packet index and stream-uniqueness by inclusion of the SSRC.
+
+   The pre-defined transforms (AES-CM and AES-f8) allow master keys to
+   be shared across streams belonging to the same RTP session by the
+   inclusion of the SSRC in the IV.  A master key MUST NOT be shared
+   among different RTP sessions.
+
+   Thus, the SSRC MUST be unique between all the RTP streams within the
+   same RTP session that share the same master key.  RTP itself provides
+   an algorithm for detecting SSRC collisions within the same RTP
+   session.  Thus, temporary collisions could lead to temporary two-time
+   pad, in the unfortunate event that SSRCs collide at a point in time
+   when the streams also have identical sequence numbers (occurring with
+   probability roughly 2^(-48)).  Therefore, the key management SHOULD
+   take care of avoiding such SSRC collisions by including the SSRCs to
+   be used in the session as negotiation parameters, proactively
+   assuring their uniqueness.  This is a strong requirements in
+   scenarios where for example, there are multiple senders that can
+   start to transmit simultaneously, before SSRC collision are detected
+   at the RTP level.
+
+   Note also that even with distinct SSRCs, extensive use of the same
+   key might improve chances of probabilistic collision and time-
+   memory-tradeoff attacks succeeding.
+
+   As described, master keys MAY be shared between streams belonging to
+   the same RTP session, but it is RECOMMENDED that each SSRC have its
+   own master key.  When master keys are shared among SSRC participants
+   and SSRCs are managed by a key management module as recommended
+   above, the RECOMMENDED policy for an SSRC collision error is for the
+   participant to leave the SRTP session as it is a sign of malfunction.
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 37]
+
+RFC 3711                          SRTP                        March 2004
+
+
+9.2.  Key Usage
+
+   The effective key size is determined (upper bounded) by the size of
+   the master key and, for encryption, the size of the salting key.  Any
+   additive stream cipher is vulnerable to attacks that use statistical
+   knowledge about the plaintext source to enable key collision and
+   time-memory tradeoff attacks [MF00] [H80] [BS00].  These attacks take
+   advantage of commonalities among plaintexts, and provide a way for a
+   cryptanalyst to amortize the computational effort of decryption over
+   many keys, or over many bytes of output, thus reducing the effective
+   key size of the cipher.  A detailed analysis of these attacks and
+   their applicability to the encryption of Internet traffic is provided
+   in [MF00].  In summary, the effective key size of SRTP when used in a
+   security system in which m distinct keys are used, is equal to the
+   key size of the cipher less the logarithm (base two) of m.
+   Protection against such attacks can be provided simply by increasing
+   the size of the keys used, which here can be accomplished by the use
+   of the salting key.  Note that the salting key MUST be random but MAY
+   be public.  A salt size of (the suggested) size 112 bits protects
+   against attacks in scenarios where at most 2^112 keys are in use.
+   This is sufficient for all practical purposes.
+
+   Implementations SHOULD use keys that are as large as possible.
+   Please note that in many cases increasing the key size of a cipher
+   does not affect the throughput of that cipher.
+
+   The use of the SRTP and SRTCP indices in the pre-defined transforms
+   fixes the maximum number of packets that can be secured with the same
+   key.  This limit is fixed to 2^48 SRTP packets for an SRTP stream,
+   and 2^31 SRTCP packets, when SRTP and SRTCP are considered
+   independently.  Due to for example re-keying, reaching this limit may
+   or may not coincide with wrapping of the indices, and thus the sender
+   MUST keep packet counts.  However, when the session keys for related
+   SRTP and SRTCP streams are derived from the same master key (the
+   default behavior, Section 4.3), the upper bound that has to be
+   considered is in practice the minimum of the two quantities.  That
+   is, when 2^48 SRTP packets or 2^31 SRTCP packets have been secured
+   with the same key (whichever occurs before), the key management MUST
+   be called to provide new master key(s) (previously stored and used
+   keys MUST NOT be used again), or the session MUST be terminated.  If
+   a sender of RTCP discovers that the sender of SRTP (or SRTCP) has not
+   updated the master or session key prior to sending 2^48 SRTP (or 2^31
+   SRTCP) packets belonging to the same SRTP (SRTCP) stream, it is up to
+   the security policy of the RTCP sender how to behave, e.g., whether
+   an RTCP BYE-packet should be sent and/or if the event should be
+   logged.
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 38]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   Note: in most typical applications (assuming at least one RTCP packet
+   for every 128,000 RTP packets), it will be the SRTCP index that first
+   reaches the upper limit, although the time until this occurs is very
+   long: even at 200 SRTCP packets/sec, the 2^31 index space of SRTCP is
+   enough to secure approximately 4 months of communication.
+
+   Note that if the master key is to be shared between SRTP streams
+   within the same RTP session (Section 9.1), although the above bounds
+   are on a per stream (i.e., per SSRC) basis, the sender MUST base re-
+   key decision on the stream whose sequence number space is the first
+   to be exhausted.
+
+   Key derivation limits the amount of plaintext that is encrypted with
+   a fixed session key, and made available to an attacker for analysis,
+   but key derivation does not extend the master key's lifetime.  To see
+   this, simply consider our requirements to avoid two-time pad:  two
+   distinct packets MUST either be processed with distinct IVs, or with
+   distinct session keys, and both the distinctness of IV and of the
+   session keys are (for the pre-defined transforms) dependent on the
+   distinctness of the packet indices.
+
+   Note that with the key derivation, the effective key size is at most
+   that of the master key, even if the derived session key is
+   considerably longer.  With the pre-defined authentication transform,
+   the session authentication key is 160 bits, but the master key by
+   default is only 128 bits.  This design choice was made to comply with
+   certain recommendations in [RFC2104] so that an existing HMAC
+   implementation can be plugged into SRTP without problems.  Since the
+   default tag size is 80 bits, it is, for the applications in mind,
+   also considered acceptable from security point of view.  Users having
+   concerns about this are RECOMMENDED to instead use a 192 bit master
+   key in the key derivation.  It was, however, chosen not to mandate
+   192-bit keys since existing AES implementations to be used in the
+   key-derivation may not always support key-lengths other than 128
+   bits.  Since AES is not defined (or properly analyzed) for use with
+   160 bit keys it is NOT RECOMMENDED that ad-hoc key-padding schemes
+   are used to pad shorter keys to 192 or 256 bits.
+
+9.3.  Confidentiality of the RTP Payload
+
+   SRTP's pre-defined ciphers are "seekable" stream ciphers, i.e.,
+   ciphers able to efficiently seek to arbitrary locations in their
+   keystream (so that the encryption or decryption of one packet does
+   not depend on preceding packets).  By using seekable stream ciphers,
+   SRTP avoids the denial of service attacks that are possible on stream
+   ciphers that lack this property.  It is important to be aware that,
+   as with any stream cipher, the exact length of the payload is
+   revealed by the encryption.  This means that it may be possible to
+
+
+
+Baugher, et al.             Standards Track                    [Page 39]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   deduce certain "formatting bits" of the payload, as the length of the
+   codec output might vary due to certain parameter settings etc.  This,
+   in turn, implies that the corresponding bit of the keystream can be
+   deduced.  However, if the stream cipher is secure (counter mode and
+   f8 are provably secure under certain assumptions [BDJR] [KSYH] [IK]),
+   knowledge of a few bits of the keystream will not aid an attacker in
+   predicting subsequent keystream bits.  Thus, the payload length (and
+   information deducible from this) will leak, but nothing else.
+
+   As some RTP packet could contain highly predictable data, e.g., SID,
+   it is important to use a cipher designed to resist known plaintext
+   attacks (which is the current practice).
+
+9.4.  Confidentiality of the RTP Header
+
+   In SRTP, RTP headers are sent in the clear to allow for header
+   compression.  This means that data such as payload type,
+   synchronization source identifier, and timestamp are available to an
+   eavesdropper.  Moreover, since RTP allows for future extensions of
+   headers, we cannot foresee what kind of possibly sensitive
+   information might also be "leaked".
+
+   SRTP is a low-cost method, which allows header compression to reduce
+   bandwidth.  It is up to the endpoints' policies to decide about the
+   security protocol to employ.  If one really needs to protect headers,
+   and is allowed to do so by the surrounding environment, then one
+   should also look at alternatives, e.g., IPsec [RFC2401].
+
+9.5.  Integrity of the RTP payload and header
+
+   SRTP messages are subject to attacks on their integrity and source
+   identification, and these risks are discussed in Section 9.5.1.  To
+   protect against these attacks, each SRTP stream SHOULD be protected
+   by HMAC-SHA1 [RFC2104] with an 80-bit output tag and a 160-bit key,
+   or a message authentication code with equivalent strength.  Secure
+   RTP SHOULD NOT be used without message authentication, except under
+   the circumstances described in this section.  It is important to note
+   that encryption algorithms, including AES Counter Mode and f8, do not
+   provide message authentication.  SRTCP MUST NOT be used with weak (or
+   NULL) authentication.
+
+   SRTP MAY be used with weak authentication (e.g., a 32-bit
+   authentication tag), or with no authentication (the NULL
+   authentication algorithm).  These options allow SRTP to be used to
+   provide confidentiality in situations where
+
+    * weak or null authentication is an acceptable security risk, and
+    * it is impractical to provide strong message authentication.
+
+
+
+Baugher, et al.             Standards Track                    [Page 40]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   These conditions are described below and in Section 7.5.  Note that
+   both conditions MUST hold in order for weak or null authentication to
+   be used.  The risks associated with exercising the weak or null
+   authentication options need to be considered by a security audit
+   prior to their use for a particular application or environment given
+   the risks, which are discussed in Section 9.5.1.
+
+   Weak authentication is acceptable when the RTP application is such
+   that the effect of a small fraction of successful forgeries is
+   negligible.  If the application is stateless, then the effect of a
+   single forged RTP packet is limited to the decoding of that
+   particular packet.  Under this condition, the size of the
+   authentication tag MUST ensure that only a negligible fraction of the
+   packets passed to the RTP application by the SRTP receiver can be
+   forgeries.  This fraction is negligible when an adversary, if given
+   control of the forged packets, is not able to make a significant
+   impact on the output of the RTP application (see the example of
+   Section 7.5).
+
+   Weak or null authentication MAY be acceptable when it is unlikely
+   that an adversary can modify ciphertext so that it decrypts to an
+   intelligible value.  One important case is when it is difficult for
+   an adversary to acquire the RTP plaintext data, since for many
+   codecs, an adversary that does not know the input signal cannot
+   manipulate the output signal in a controlled way.  In many cases it
+   may be difficult for the adversary to determine the actual value of
+   the plaintext.  For example, a hidden snooping device might be
+   required in order to know a live audio or video signal.  The
+   adversary's signal must have a quality equivalent to or greater than
+   that of the signal under attack, since otherwise the adversary would
+   not have enough information to encode that signal with the codec used
+   by the victim.  Plaintext prediction may also be especially difficult
+   for an interactive application such as a telephone call.
+
+   Weak or null authentication MUST NOT be used when the RTP application
+   makes data forwarding or access control decisions based on the RTP
+   data.  In such a case, an attacker may be able to subvert
+   confidentiality by causing the receiver to forward data to an
+   attacker.  See Section 3 of [B96] for a real-life example of such
+   attacks.
+
+   Null authentication MUST NOT be used when a replay attack, in which
+   an adversary stores packets then replays them later in the session,
+   could have a non-negligible impact on the receiver.  An example of a
+   successful replay attack is the storing of the output of a
+   surveillance camera for a period of time, later followed by the
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 41]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   injection of that output to the monitoring station to avoid
+   surveillance.  Encryption does not protect against this attack, and
+   non-null authentication is REQUIRED in order to defeat it.
+
+   If existential message forgery is an issue, i.e., when the accuracy
+   of the received data is of non-negligible importance, null
+   authentication MUST NOT be used.
+
+9.5.1.  Risks of Weak or Null Message Authentication
+
+   During a security audit considering the use of weak or null
+   authentication, it is important to keep in mind the following attacks
+   which are possible when no message authentication algorithm is used.
+
+   An attacker who cannot predict the plaintext is still always able to
+   modify the message sent between the sender and the receiver so that
+   it decrypts to a random plaintext value, or to send a stream of bogus
+   packets to the receiver that will decrypt to random plaintext values.
+   This attack is essentially a denial of service attack, though in the
+   absence of message authentication, the RTP application will have
+   inputs that are bit-wise correlated with the true value.  Some
+   multimedia codecs and common operating systems will crash when such
+   data are accepted as valid video data.  This denial of service attack
+   may be a much larger threat than that due to an attacker dropping,
+   delaying, or re-ordering packets.
+
+   An attacker who cannot predict the plaintext can still replay a
+   previous message with certainty that the receiver will accept it.
+   Applications with stateless codecs might be robust against this type
+   of attack, but for other, more complex applications these attacks may
+   be far more grave.
+
+   An attacker who can predict the plaintext can modify the ciphertext
+   so that it will decrypt to any value of her choosing.  With an
+   additive stream cipher, an attacker will always be able to change
+   individual bits.
+
+   An attacker may be able to subvert confidentiality due to the lack of
+   authentication when a data forwarding or access control decision is
+   made on decrypted but unauthenticated plaintext.  This is because the
+   receiver may be fooled into forwarding data to an attacker, leading
+   to an indirect breach of confidentiality (see Section 3 of [B96]).
+   This is because data-forwarding decisions are made on the decrypted
+   plaintext; information in the plaintext will determine to what subnet
+   (or process) the plaintext is forwarded in ESP [RFC2401] tunnel mode
+   (respectively, transport mode).  When Secure RTP is used without
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 42]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   message authentication, it should be verified that the application
+   does not make data forwarding or access control decisions based on
+   the decrypted plaintext.
+
+   Some cipher modes of operation that require padding, e.g., standard
+   cipher block chaining (CBC) are very sensitive to attacks on
+   confidentiality if certain padding types are used in the absence of
+   integrity.  The attack [V02] shows that this is indeed the case for
+   the standard RTP padding as discussed in reference to Figure 1, when
+   used together with CBC mode.  Later transform additions to SRTP MUST
+   therefore carefully consider the risk of using this padding without
+   proper integrity protection.
+
+9.5.2.  Implicit Header Authentication
+
+   The IV formation of the f8-mode gives implicit authentication (IHA)
+   of the RTP header, even when message authentication is not used.
+   When IHA is used, an attacker that modifies the value of the RTP
+   header will cause the decryption process at the receiver to produce
+   random plaintext values.  While this protection is not equivalent to
+   message authentication, it may be useful for some applications.
+
+10.  Interaction with Forward Error Correction mechanisms
+
+   The default processing when using Forward Error Correction (e.g., RFC
+   2733) processing with SRTP SHALL be to perform FEC processing prior
+   to SRTP processing on the sender side and to perform SRTP processing
+   prior to FEC processing on the receiver side.  Any change to this
+   ordering (reversing it, or, placing FEC between SRTP encryption and
+   SRTP authentication) SHALL be signaled out of band.
+
+11.  Scenarios
+
+   SRTP can be used as security protocol for the RTP/RTCP traffic in
+   many different scenarios.  SRTP has a number of configuration
+   options, in particular regarding key usage, and can have impact on
+   the total performance of the application according to the way it is
+   used.  Hence, the use of SRTP is dependent on the kind of scenario
+   and application it is used with.  In the following, we briefly
+   illustrate some use cases for SRTP, and give some guidelines for
+   recommended setting of its options.
+
+11.1.  Unicast
+
+   A typical example would be a voice call or video-on-demand
+   application.
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 43]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   Consider one bi-directional RTP stream, as one RTP session.  It is
+   possible for the two parties to share the same master key in the two
+   directions according to the principles of Section 9.1.  The first
+   round of the key derivation splits the master key into any or all of
+   the following session keys (according to the provided security
+   functions):
+
+   SRTP_encr_key, SRTP_auth_key, SRTCP_encr_key, and SRTCP_auth key.
+
+   (For simplicity, we omit discussion of the salts, which are also
+   derived.)  In this scenario, it will in most cases suffice to have a
+   single master key with the default lifetime.  This guarantees
+   sufficiently long lifetime of the keys and a minimum set of keys in
+   place for most practical purposes.  Also, in this case RTCP
+   protection can be applied smoothly.  Under these assumptions, use of
+   the MKI can be omitted.  As the key-derivation in combination with
+   large difference in the packet rate in the respective directions may
+   require simultaneous storage of several session keys, if storage is
+   an issue, we recommended to use low-rate key derivation.
+
+   The same considerations can be extended to the unicast scenario with
+   multiple RTP sessions, where each session would have a distinct
+   master key.
+
+11.2.  Multicast (one sender)
+
+   Just as with (unprotected) RTP, a scalability issue arises in big
+   groups due to the possibly very large amount of SRTCP Receiver
+   Reports that the sender might need to process.  In SRTP, the sender
+   may have to keep state (the cryptographic context) for each receiver,
+   or more precisely, for the SRTCP used to protect Receiver Reports.
+   The overhead increases proportionally to the size of the group.  In
+   particular, re-keying requires special concern, see below.
+
+   Consider first a small group of receivers.  There are a few possible
+   setups with the distribution of master keys among the receivers.
+   Given a single RTP session, one possibility is that the receivers
+   share the same master key as per Section 9.1 to secure all their
+   respective RTCP traffic.  This shared master key could then be the
+   same one used by the sender to protect its outbound SRTP traffic.
+   Alternatively, it could be a master key shared only among the
+   receivers and used solely for their SRTCP traffic.  Both alternatives
+   require the receivers to trust each other.
+
+   Considering SRTCP and key storage, it is recommended to use low-rate
+   (or zero) key_derivation (except the mandatory initial one), so that
+   the sender does not need to store too many session keys (each SRTCP
+   stream might otherwise have a different session key at a given point
+
+
+
+Baugher, et al.             Standards Track                    [Page 44]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   in time, as the SRTCP sources send at different times).  Thus, in
+   case key derivation is wanted for SRTP, the cryptographic context for
+   SRTP can be kept separate from the SRTCP crypto context, so that it
+   is possible to have a key_derivation_rate of 0 for SRTCP and a non-
+   zero value for SRTP.
+
+   Use of the MKI for re-keying is RECOMMENDED for most applications
+   (see Section 8.1).
+
+   If there are more than one SRTP/SRTCP stream (within the same RTP
+   session) that share the master key, the upper limit of 2^48 SRTP
+   packets / 2^31 SRTCP packets means that, before one of the streams
+   reaches its maximum number of packets, re-keying MUST be triggered on
+   ALL streams sharing the master key.  (From strict security point of
+   view, only the stream reaching the maximum would need to be re-keyed,
+   but then the streams would no longer be sharing master key, which is
+   the intention.)  A local policy at the sender side should force
+   rekeying in a way that the maximum packet limit is not reached on any
+   of the streams.  Use of the MKI for re-keying is RECOMMENDED.
+
+   In large multicast with one sender, the same considerations as for
+   the small group multicast hold.  The biggest issue in this scenario
+   is the additional load placed at the sender side, due to the state
+   (cryptographic contexts) that has to be maintained for each receiver,
+   sending back RTCP Receiver Reports.  At minimum, a replay window
+   might need to be maintained for each RTCP source.
+
+11.3.  Re-keying and access control
+
+   Re-keying may occur due to access control (e.g., when a member is
+   removed during a multicast RTP session), or for pure cryptographic
+   reasons (e.g., the key is at the end of its lifetime).  When using
+   SRTP default transforms, the master key MUST be replaced before any
+   of the index spaces are exhausted for any of the streams protected by
+   one and the same master key.
+
+   How key management re-keys SRTP implementations is out of scope, but
+   it is clear that there are straightforward ways to manage keys for a
+   multicast group.  In one-sender multicast, for example, it is
+   typically the responsibility of the sender to determine when a new
+   key is needed.  The sender is the one entity that can keep track of
+   when the maximum number of packets has been sent, as receivers may
+   join and leave the session at any time, there may be packet loss and
+   delay etc.  In scenarios other than one-sender multicast, other
+   methods can be used.  Here, one must take into consideration that key
+   exchange can be a costly operation, taking several seconds for a
+   single exchange.  Hence, some time before the master key is
+   exhausted/expires, out-of-band key management is initiated, resulting
+
+
+
+Baugher, et al.             Standards Track                    [Page 45]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   in a new master key that is shared with the receiver(s).  In any
+   event, to maintain synchronization when switching to the new key,
+   group policy might choose between using the MKI and the <From, To>,
+   as described in Section 8.1.
+
+   For access control purposes, the <From, To> periods are set at the
+   desired granularity, dependent on the packet rate.  High rate re-
+   keying can be problematic for SRTCP in some large-group scenarios.
+   As mentioned, there are potential problems in using the SRTP index,
+   rather than the SRTCP index, for determining the master key.  In
+   particular, for short periods during switching of master keys, it may
+   be the case that SRTCP packets are not under the current master key
+   of the correspondent SRTP.  Therefore, using the MKI for re-keying in
+   such scenarios will produce better results.
+
+11.4.  Summary of basic scenarios
+
+   The description of these scenarios highlights some recommendations on
+   the use of SRTP, mainly related to re-keying and large scale
+   multicast:
+
+   - Do not use fast re-keying with the <From, To> feature.  It may, in
+     particular, give problems in retrieving the correct SRTCP key, if
+     an SRTCP packet arrives close to the re-keying time.  The MKI
+     SHOULD be used in this case.
+
+   - If multiple SRTP streams in the same RTP session share the same
+     master key, also moderate rate re-keying MAY have the same
+     problems, and the MKI SHOULD be used.
+
+   - Though offering increased security, a non-zero key_derivation_rate
+     is NOT RECOMMENDED when trying to minimize the number of keys in
+     use with multiple streams.
+
+12.  IANA Considerations
+
+   The RTP specification establishes a registry of profile names for use
+   by higher-level control protocols, such as the Session Description
+   Protocol (SDP), to refer to transport methods.  This profile
+   registers the name "RTP/SAVP".
+
+   SRTP uses cryptographic transforms which a key management protocol
+   signals.  It is the task of each particular key management protocol
+   to register the cryptographic transforms or suites of transforms with
+   IANA.  The key management protocol conveys these protocol numbers,
+   not SRTP, and each key management protocol chooses the numbering
+   scheme and syntax that it requires.
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 46]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   Specification of a key management protocol for SRTP is out of scope
+   here.  Section 8.2, however, provides guidance on the parameters that
+   need to be defined for the default and mandatory transforms.
+
+13.  Acknowledgements
+
+   David Oran (Cisco) and Rolf Blom (Ericsson) are co-authors of this
+   document but their valuable contributions are acknowledged here to
+   keep the length of the author list down.
+
+   The authors would in addition like to thank Magnus Westerlund, Brian
+   Weis, Ghyslain Pelletier, Morgan Lindqvist, Robert Fairlie-
+   Cuninghame, Adrian Perrig, the AVT WG and in particular the chairmen
+   Colin Perkins and Stephen Casner, the Transport and Security Area
+   Directors, and Eric Rescorla for their reviews and support.
+
+14.  References
+
+14.1.  Normative References
+
+   [AES]     NIST, "Advanced Encryption Standard (AES)", FIPS PUB 197,
+             http://www.nist.gov/aes/
+
+   [RFC2104] Krawczyk, H., Bellare, M. and R. Canetti, "HMAC:  Keyed-
+             Hashing for Message Authentication", RFC 2104, February
+             1997.
+
+   [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
+             Requirement Levels", BCP 14, RFC 2119, March 1997.
+
+   [RFC2401] Kent, S. and R. Atkinson, "Security Architecture for
+             Internet Protocol", RFC 2401, November 1998.
+
+   [RFC2828] Shirey, R., "Internet Security Glossary", FYI 36, RFC 2828,
+             May 2000.
+
+   [RFC3550] Schulzrinne, H., Casner, S., Frederick, R. and V. Jacobson,
+             "RTP: A Transport Protocol for Real-time Applications", RFC
+             3550, July 2003.
+
+   [RFC3551] Schulzrinne, H. and S. Casner, "RTP Profile for Audio and
+             Video Conferences with Minimal Control",  RFC 3551, July
+             2003.
+
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 47]
+
+RFC 3711                          SRTP                        March 2004
+
+
+14.2.  Informative References
+
+   [AES-CTR] Lipmaa, H., Rogaway, P. and D. Wagner, "CTR-Mode
+             Encryption", NIST, http://csrc.nist.gov/encryption/modes/
+             workshop1/papers/lipmaa-ctr.pdf
+
+   [B96]     Bellovin, S., "Problem Areas for the IP Security
+             Protocols," in Proceedings of the Sixth Usenix Unix
+             Security Symposium, pp. 1-16, San Jose, CA, July 1996
+             (http://www.research.att.com/~smb/papers/index.html).
+
+   [BDJR]    Bellare, M., Desai, A., Jokipii, E. and P. Rogaway, "A
+             Concrete Treatment of Symmetric Encryption: Analysis of DES
+             Modes of Operation", Proceedings 38th IEEE FOCS, pp. 394-
+             403, 1997.
+
+   [BS00]    Biryukov, A. and A. Shamir, "Cryptanalytic Time/Memory/Data
+             Tradeoffs for Stream Ciphers", Proceedings, ASIACRYPT 2000,
+             LNCS 1976, pp. 1-13, Springer Verlag.
+
+   [C99]     Crowell, W. P., "Introduction to the VENONA Project",
+             http://www.nsa.gov:8080/docs/venona/index.html.
+
+   [CTR]     Dworkin, M., NIST Special Publication 800-38A,
+             "Recommendation for Block Cipher Modes of Operation:
+             Methods and Techniques", 2001.
+             http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-
+             38a.pdf.
+
+   [f8-a]    3GPP TS 35.201 V4.1.0 (2001-12) Technical Specification 3rd
+             Generation Partnership Project; Technical Specification
+             Group Services and System Aspects; 3G Security;
+             Specification of the 3GPP Confidentiality and Integrity
+             Algorithms; Document 1: f8 and f9 Specification (Release
+             4).
+
+   [f8-b]    3GPP TR 33.908 V4.0.0 (2001-09) Technical Report 3rd
+             Generation Partnership Project; Technical Specification
+             Group Services and System Aspects; 3G Security; General
+             Report on the Design, Specification and Evaluation of 3GPP
+             Standard Confidentiality and Integrity Algorithms (Release
+             4).
+
+   [GDOI]    Baugher, M., Weis, B., Hardjono, T. and H. Harney, "The
+             Group Domain of Interpretation, RFC 3547, July 2003.
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 48]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   [HAC]     Menezes, A., Van Oorschot, P. and  S. Vanstone, "Handbook
+             of Applied Cryptography", CRC Press, 1997, ISBN 0-8493-
+             8523-7.
+
+   [H80]     Hellman, M. E., "A cryptanalytic time-memory trade-off",
+             IEEE Transactions on Information Theory, July 1980, pp.
+             401-406.
+
+   [IK]      T. Iwata and T. Kohno: "New Security Proofs for the 3GPP
+             Confidentiality and Integrity Algorithms", Proceedings of
+             FSE 2004.
+
+   [KINK]    Thomas, M. and J. Vilhuber, "Kerberized Internet
+             Negotiation of Keys (KINK)", Work in Progress.
+
+   [KEYMGT]  Arrko, J., et al., "Key Management Extensions for Session
+             Description Protocol (SDP) and Real Time Streaming Protocol
+             (RTSP)", Work in Progress.
+
+   [KSYH]    Kang, J-S., Shin, S-U., Hong, D. and O. Yi, "Provable
+             Security of KASUMI and 3GPP Encryption Mode f8",
+             Proceedings Asiacrypt 2001, Springer Verlag LNCS 2248, pp.
+             255-271, 2001.
+
+   [MIKEY]   Arrko, J., et. al., "MIKEY: Multimedia Internet KEYing",
+             Work in Progress.
+
+   [MF00]    McGrew, D. and S. Fluhrer, "Attacks on Encryption of
+             Redundant Plaintext and Implications on Internet Security",
+             the Proceedings of the Seventh Annual Workshop on Selected
+             Areas in Cryptography (SAC 2000), Springer-Verlag.
+
+   [PCST1]   Perrig, A., Canetti, R., Tygar, D. and D.  Song, "Efficient
+             and Secure Source Authentication for Multicast", in Proc.
+             of Network and Distributed System Security Symposium NDSS
+             2001, pp. 35-46, 2001.
+
+   [PCST2]   Perrig, A., Canetti, R., Tygar, D. and D. Song, "Efficient
+             Authentication and Signing of Multicast Streams over Lossy
+             Channels", in Proc. of IEEE Security and Privacy Symposium
+             S&P2000, pp. 56-73, 2000.
+
+   [RFC1750] Eastlake, D., Crocker, S. and J. Schiller, "Randomness
+             Recommendations for Security", RFC 1750, December 1994.
+
+   [RFC2675] Borman, D., Deering, S. and R. Hinden, "IPv6 Jumbograms",
+             RFC 2675, August 1999.
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 49]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   [RFC3095] Bormann, C., Burmeister, C., Degermark, M., Fukuhsima, H.,
+             Hannu, H., Jonsson, L-E., Hakenberg, R., Koren, T., Le, K.,
+             Liu, Z., Martensson, A., Miyazaki, A., Svanbro, K., Wiebke,
+             T., Yoshimura, T. and H. Zheng, "RObust Header Compression:
+             Framework and Four Profiles: RTP, UDP, ESP, and
+             uncompressed (ROHC)", RFC 3095, July 2001.
+
+   [RFC3242] Jonsson, L-E. and G. Pelletier, "RObust Header Compression
+             (ROHC): A Link-Layer Assisted Profile for IP/UDP/RTP ", RFC
+             3242, April 2002.
+
+   [SDMS]    Andreasen, F., Baugher, M. and D. Wing, "Session
+             Description Protocol Security Descriptions for Media
+             Streams", Work in Progress.
+
+   [SWO]     Svanbro, K., Wiorek, J. and B. Olin, "Voice-over-IP-over-
+             wireless", Proc.  PIMRC 2000, London, Sept. 2000.
+
+   [V02]     Vaudenay, S., "Security Flaws Induced by CBC Padding -
+             Application to SSL, IPsec, WTLS...", Advances in
+             Cryptology, EUROCRYPT'02, LNCS 2332, pp. 534-545.
+
+   [WC81]    Wegman, M. N., and  J.L. Carter, "New Hash Functions and
+             Their Use in Authentication and Set Equality", JCSS 22,
+             265-279, 1981.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 50]
+
+RFC 3711                          SRTP                        March 2004
+
+
+Appendix A: Pseudocode for Index Determination
+
+   The following is an example of pseudo-code for the algorithm to
+   determine the index i of an SRTP packet with sequence number SEQ.  In
+   the following, signed arithmetic is assumed.
+
+         if (s_l < 32,768)
+            if (SEQ - s_l > 32,768)
+               set v to (ROC-1) mod 2^32
+            else
+               set v to ROC
+            endif
+         else
+            if (s_l - 32,768 > SEQ)
+               set v to (ROC+1) mod 2^32
+            else
+               set v to ROC
+            endif
+         endif
+         return SEQ + v*65,536
+
+Appendix B: Test Vectors
+
+   All values are in hexadecimal.
+
+B.1.  AES-f8 Test Vectors
+
+   SRTP PREFIX LENGTH  :   0
+
+   RTP packet header   :   806e5cba50681de55c621599
+
+   RTP packet payload  :   70736575646f72616e646f6d6e657373
+                           20697320746865206e65787420626573
+                           74207468696e67
+
+   ROC                 :   d462564a
+   key                 :   234829008467be186c3de14aae72d62c
+   salt key            :   32f2870d
+   key-mask (m)        :   32f2870d555555555555555555555555
+   key XOR key-mask    :   11baae0dd132eb4d3968b41ffb278379
+
+   IV                  :   006e5cba50681de55c621599d462564a
+   IV'                 :   595b699bbd3bc0df26062093c1ad8f73
+
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 51]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   j = 0
+   IV' xor j           :   595b699bbd3bc0df26062093c1ad8f73
+   S(-1)               :   00000000000000000000000000000000
+   IV' xor S(-1) xor j :   595b699bbd3bc0df26062093c1ad8f73
+   S(0)                :   71ef82d70a172660240709c7fbb19d8e
+   plaintext           :   70736575646f72616e646f6d6e657373
+   ciphertext          :   019ce7a26e7854014a6366aa95d4eefd
+
+   j = 1
+   IV' xor j           :   595b699bbd3bc0df26062093c1ad8f72
+   S(0)                :   71ef82d70a172660240709c7fbb19d8e
+   IV' xor S(0) xor j  :   28b4eb4cb72ce6bf020129543a1c12fc
+   S(1)                :   3abd640a60919fd43bd289a09649b5fc
+   plaintext           :   20697320746865206e65787420626573
+   ciphertext          :   1ad4172a14f9faf455b7f1d4b62bd08f
+
+   j = 2
+   IV' xor j           :   595b699bbd3bc0df26062093c1ad8f71
+   S(1)                :   3abd640a60919fd43bd289a09649b5fc
+   IV' xor S(1) xor j  :   63e60d91ddaa5f0b1dd4a93357e43a8d
+   S(2)                :   220c7a8715266565b09ecc8a2a62b11b
+   plaintext           :   74207468696e67
+   ciphertext          :   562c0eef7c4802
+
+B.2.  AES-CM Test Vectors
+
+    Keystream segment length: 1044512 octets (65282 AES blocks)
+    Session Key:      2B7E151628AED2A6ABF7158809CF4F3C
+    Rollover Counter: 00000000
+    Sequence Number:  0000
+    SSRC:             00000000
+    Session Salt:     F0F1F2F3F4F5F6F7F8F9FAFBFCFD0000 (already shifted)
+    Offset:           F0F1F2F3F4F5F6F7F8F9FAFBFCFD0000
+
+    Counter                            Keystream
+
+    F0F1F2F3F4F5F6F7F8F9FAFBFCFD0000   E03EAD0935C95E80E166B16DD92B4EB4
+    F0F1F2F3F4F5F6F7F8F9FAFBFCFD0001   D23513162B02D0F72A43A2FE4A5F97AB
+    F0F1F2F3F4F5F6F7F8F9FAFBFCFD0002   41E95B3BB0A2E8DD477901E4FCA894C0
+    ...                                ...
+    F0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF   EC8CDF7398607CB0F2D21675EA9EA1E4
+    F0F1F2F3F4F5F6F7F8F9FAFBFCFDFF00   362B7C3C6773516318A077D7FC5073AE
+    F0F1F2F3F4F5F6F7F8F9FAFBFCFDFF01   6A2CC3787889374FBEB4C81B17BA6C44
+
+   Nota Bene: this test case is contrived so that the latter part of the
+   keystream segment coincides with the test case in Section F.5.1 of
+   [CTR].
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 52]
+
+RFC 3711                          SRTP                        March 2004
+
+
+B.3.  Key Derivation Test Vectors
+
+   This section provides test data for the default key derivation
+   function, which uses AES-128 in Counter Mode.  In the following, we
+   walk through the initial key derivation for the AES-128 Counter Mode
+   cipher, which requires a 16 octet session encryption key and a 14
+   octet session salt, and an authentication function which requires a
+   94-octet session authentication key.  These values are called the
+   cipher key, the cipher salt, and the auth key in the following.
+   Since this is the initial key derivation and the key derivation rate
+   is equal to zero, the value of (index DIV key_derivation_rate) is
+   zero (actually, a six-octet string of zeros).  In the following, we
+   shorten key_derivation_rate to kdr.
+
+   The inputs to the key derivation function are the 16 octet master key
+   and the 14 octet master salt:
+
+      master key:  E1F97A0D3E018BE0D64FA32C06DE4139
+      master salt: 0EC675AD498AFEEBB6960B3AABE6
+
+   We first show how the cipher key is generated.  The input block for
+   AES-CM is generated by exclusive-oring the master salt with the
+   concatenation of the encryption key label 0x00 with (index DIV kdr),
+   then padding on the right with two null octets (which implements the
+   multiply-by-2^16 operation, see Section 4.3.3).  The resulting value
+   is then AES-CM- encrypted using the master key to get the cipher key.
+
+      index DIV kdr:                 000000000000
+      label:                       00
+      master salt:   0EC675AD498AFEEBB6960B3AABE6
+      -----------------------------------------------
+      xor:           0EC675AD498AFEEBB6960B3AABE6     (x, PRF input)
+
+      x*2^16:        0EC675AD498AFEEBB6960B3AABE60000 (AES-CM input)
+
+      cipher key:    C61E7A93744F39EE10734AFE3FF7A087 (AES-CM output)
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 53]
+
+RFC 3711                          SRTP                        March 2004
+
+
+   Next, we show how the cipher salt is generated.  The input block for
+   AES-CM is generated by exclusive-oring the master salt with the
+   concatenation of the encryption salt label.  That value is padded and
+   encrypted as above.
+
+      index DIV kdr:                 000000000000
+      label:                       02
+      master salt:   0EC675AD498AFEEBB6960B3AABE6
+
+      ----------------------------------------------
+      xor:           0EC675AD498AFEE9B6960B3AABE6     (x, PRF input)
+
+      x*2^16:        0EC675AD498AFEE9B6960B3AABE60000 (AES-CM input)
+
+                     30CBBC08863D8C85D49DB34A9AE17AC6 (AES-CM ouptut)
+
+      cipher salt:   30CBBC08863D8C85D49DB34A9AE1
+
+   We now show how the auth key is generated.  The input block for AES-
+   CM is generated as above, but using the authentication key label.
+
+      index DIV kdr:                   000000000000
+      label:                         01
+      master salt:     0EC675AD498AFEEBB6960B3AABE6
+      -----------------------------------------------
+      xor:             0EC675AD498AFEEAB6960B3AABE6     (x, PRF input)
+
+      x*2^16:          0EC675AD498AFEEAB6960B3AABE60000 (AES-CM input)
+
+   Below, the auth key is shown on the left, while the corresponding AES
+   input blocks are shown on the right.
+
+   auth key                           AES input blocks
+   CEBE321F6FF7716B6FD4AB49AF256A15   0EC675AD498AFEEAB6960B3AABE60000
+   6D38BAA48F0A0ACF3C34E2359E6CDBCE   0EC675AD498AFEEAB6960B3AABE60001
+   E049646C43D9327AD175578EF7227098   0EC675AD498AFEEAB6960B3AABE60002
+   6371C10C9A369AC2F94A8C5FBCDDDC25   0EC675AD498AFEEAB6960B3AABE60003
+   6D6E919A48B610EF17C2041E47403576   0EC675AD498AFEEAB6960B3AABE60004
+   6B68642C59BBFC2F34DB60DBDFB2       0EC675AD498AFEEAB6960B3AABE60005
+
+
+
+
+
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 54]
+
+RFC 3711                          SRTP                        March 2004
+
+
+Authors' Addresses
+
+   Questions and comments should be directed to the authors and
+   avt@ietf.org:
+
+   Mark Baugher
+   Cisco Systems, Inc.
+   5510 SW Orchid Street
+   Portland, OR 97219 USA
+
+   Phone:  +1 408-853-4418
+   EMail:  mbaugher@cisco.com
+
+
+   Elisabetta Carrara
+   Ericsson Research
+   SE-16480 Stockholm
+   Sweden
+
+   Phone:  +46 8 50877040
+   EMail:  elisabetta.carrara@ericsson.com
+
+
+   David A. McGrew
+   Cisco Systems, Inc.
+   San Jose, CA 95134-1706
+   USA
+
+   Phone:  +1 301-349-5815
+   EMail:  mcgrew@cisco.com
+
+
+   Mats Naslund
+   Ericsson Research
+   SE-16480 Stockholm
+   Sweden
+
+   Phone:  +46 8 58533739
+   EMail:  mats.naslund@ericsson.com
+
+
+   Karl Norrman
+   Ericsson Research
+   SE-16480 Stockholm
+   Sweden
+
+   Phone:  +46 8 4044502
+   EMail:  karl.norrman@ericsson.com
+
+
+
+Baugher, et al.             Standards Track                    [Page 55]
+
+RFC 3711                          SRTP                        March 2004
+
+
+Full Copyright Statement
+
+   Copyright (C) The Internet Society (2004).  This document is subject
+   to the rights, licenses and restrictions contained in BCP 78 and
+   except as set forth therein, the authors retain all their rights.
+
+   This document and the information contained herein are provided on an
+   "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
+   OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
+   ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
+   INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
+   INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
+   WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+
+Intellectual Property
+
+   The IETF takes no position regarding the validity or scope of any
+   Intellectual Property Rights or other rights that might be claimed to
+   pertain to the implementation or use of the technology described in
+   this document or the extent to which any license under such rights
+   might or might not be available; nor does it represent that it has
+   made any independent effort to identify any such rights.  Information
+   on the procedures with respect to rights in RFC documents can be
+   found in BCP 78 and BCP 79.
+
+   Copies of IPR disclosures made to the IETF Secretariat and any
+   assurances of licenses to be made available, or the result of an
+   attempt made to obtain a general license or permission for the use of
+   such proprietary rights by implementers or users of this
+   specification can be obtained from the IETF on-line IPR repository at
+   http://www.ietf.org/ipr.
+
+   The IETF invites any interested party to bring to its attention any
+   copyrights, patents or patent applications, or other proprietary
+   rights that may cover technology that may be required to implement
+   this standard.  Please address the information to the IETF at ietf-
+   ipr@ietf.org.
+
+Acknowledgement
+
+   Funding for the RFC Editor function is currently provided by the
+   Internet Society.
+
+
+
+
+
+
+
+
+
+Baugher, et al.             Standards Track                    [Page 56]
+
diff --git a/googlepatches/google-10-srtp-ios-fixes.pack b/googlepatches/google-10-srtp-ios-fixes.pack
new file mode 100644
index 0000000..53d0c88
--- /dev/null
+++ b/googlepatches/google-10-srtp-ios-fixes.pack
@@ -0,0 +1,99 @@
+Change 19593349 by seh@seh-gcomm_android on 2011/02/18 16:57:20 *pending*
+
+	Merge in changes from GComm for mobile's version.
+	
+	PRESUBMIT=passed
+	R=astor,hta,juberti,mikaelp,tschmelcher
+	CC=a2a-mobile
+	DELTA=7  (3 added, 0 deleted, 4 changed)
+	OCL=19593349
+
+Affected files ...
+
+... //depot/google3/third_party/libsrtp/README.google#6 edit
+... //depot/google3/third_party/libsrtp/crypto/ae_xfm/xfm.c#4 edit
+... //depot/google3/third_party/libsrtp/crypto/cipher/aes_icm.c#4 edit
+... //depot/google3/third_party/libsrtp/crypto/include/config.h#5 edit
+... //depot/google3/third_party/libsrtp/srtp/ekt.c#3 edit
+
+==== //depot/google3/third_party/libsrtp/README.google#6 - /Users/seh/dev/source/gcomm_android/google3/third_party/libsrtp/README.google ====
+# action=edit type=text
+--- google3/third_party/libsrtp/README.google	2011-02-18 17:17:34.000000000 -0800
++++ google3/third_party/libsrtp/README.google	2011-02-18 17:31:53.000000000 -0800
+@@ -19,3 +19,6 @@
+ - applied a security fix to not accept unencrypted SRTP unless specified by policy.
+ - applied a fix to not crash when receiving a RTCP packet that had a much larger sequence number than the previous RTCP packet
+ - all patches are stored individually in the googlepatches subdirectory
++- iOS related changes.
++  undefine HAVE_BYTESWAP_H in config.h
++  Fix debug build compile errors: added static keyword to inline methods and undefined DEBUG before #define DEBUG
+\ No newline at end of file
+==== //depot/google3/third_party/libsrtp/crypto/ae_xfm/xfm.c#4 - /Users/seh/dev/source/gcomm_android/google3/third_party/libsrtp/crypto/ae_xfm/xfm.c ====
+# action=edit type=text
+--- google3/third_party/libsrtp/crypto/ae_xfm/xfm.c	2011-02-18 16:57:41.000000000 -0800
++++ google3/third_party/libsrtp/crypto/ae_xfm/xfm.c	2011-02-18 16:09:33.000000000 -0800
+@@ -177,6 +177,7 @@
+ 
+ #define ENC 1
+ 
++#undef DEBUG
+ #define DEBUG 0
+ 
+ err_status_t
+==== //depot/google3/third_party/libsrtp/crypto/cipher/aes_icm.c#4 - /Users/seh/dev/source/gcomm_android/google3/third_party/libsrtp/crypto/cipher/aes_icm.c ====
+# action=edit type=text
+--- google3/third_party/libsrtp/crypto/cipher/aes_icm.c	2011-02-18 16:57:41.000000000 -0800
++++ google3/third_party/libsrtp/crypto/cipher/aes_icm.c	2011-02-18 16:47:09.000000000 -0800
+@@ -285,7 +285,7 @@
+  * this is an internal, hopefully inlined function
+  */
+   
+-inline void
++static inline void
+ aes_icm_advance_ismacryp(aes_icm_ctx_t *c, uint8_t forIsmacryp) {
+   /* fill buffer with new keystream */
+   v128_copy(&c->keystream_buffer, &c->counter);
+==== //depot/google3/third_party/libsrtp/crypto/include/config.h#5 - /Users/seh/dev/source/gcomm_android/google3/third_party/libsrtp/crypto/include/config.h ====
+# action=edit type=text
+--- google3/third_party/libsrtp/crypto/include/config.h	2011-02-18 16:57:41.000000000 -0800
++++ google3/third_party/libsrtp/crypto/include/config.h	2011-02-18 16:41:52.000000000 -0800
+@@ -193,6 +193,8 @@
+ #define inline
+ #endif
+ typedef short int16_t;
++#elif defined(IOS)
++#undef HAVE_BYTESWAP_H
+ /* Adjustments to build on MacOS. */
+ #elif defined(OSX)
+ #undef DEV_URANDOM
+==== //depot/google3/third_party/libsrtp/srtp/ekt.c#3 - /Users/seh/dev/source/gcomm_android/google3/third_party/libsrtp/srtp/ekt.c ====
+# action=edit type=text
+--- google3/third_party/libsrtp/srtp/ekt.c	2011-02-18 16:57:41.000000000 -0800
++++ google3/third_party/libsrtp/srtp/ekt.c	2011-02-18 16:51:58.000000000 -0800
+@@ -90,7 +90,7 @@
+   return 0;
+ }
+ 
+-inline ekt_spi_t
++static inline ekt_spi_t
+ srtcp_packet_get_ekt_spi(const uint8_t *packet_start, unsigned pkt_octet_len) {
+   const uint8_t *spi_location;
+   
+@@ -99,7 +99,7 @@
+   return *((const ekt_spi_t *)spi_location);
+ }
+ 
+-inline uint32_t
++static inline uint32_t
+ srtcp_packet_get_ekt_roc(const uint8_t *packet_start, unsigned pkt_octet_len) {
+   const uint8_t *roc_location;
+   
+@@ -108,7 +108,7 @@
+   return *((const uint32_t *)roc_location);
+ }
+ 
+-inline const uint8_t *
++static inline const uint8_t *
+ srtcp_packet_get_emk_location(const uint8_t *packet_start, 
+ 			      unsigned pkt_octet_len) {
+   const uint8_t *location;
diff --git a/googlepatches/google-11-srtp-replay-fix.patch b/googlepatches/google-11-srtp-replay-fix.patch
new file mode 100644
index 0000000..46d3f7f
--- /dev/null
+++ b/googlepatches/google-11-srtp-replay-fix.patch
@@ -0,0 +1,107 @@
+==== //depot/google3/third_party/libsrtp/README.google#8 - None ====
+# action=edit type=text
+--- google3/third_party/libsrtp/README.google	2011-02-22 19:05:30.000000000 -0800
++++ google3/third_party/libsrtp/README.google	2011-05-27 17:56:49.000000000 -0700
+@@ -21,4 +21,6 @@
+ - all patches are stored individually in the googlepatches subdirectory
+ - iOS related changes.
+   undefine HAVE_BYTESWAP_H in config.h
+-  Fix debug build compile errors: added static keyword to inline methods and undefined DEBUG before #define DEBUG
+\ No newline at end of file
++  Fix debug build compile errors: added static keyword to inline methods and undefined DEBUG before #define DEBUG
++- Fixed a bug related to replay detection when sequence number rolls back
++  arround 0. (Currently contacting libsrtp developers for upstream.)
+==== //depot/google3/third_party/libsrtp/crypto/replay/rdbx.c#5 - None ====
+# action=edit type=text
+--- google3/third_party/libsrtp/crypto/replay/rdbx.c	2010-02-25 06:36:30.000000000 -0800
++++ google3/third_party/libsrtp/crypto/replay/rdbx.c	2011-05-27 17:56:49.000000000 -0700
+@@ -145,7 +145,16 @@
+   if (local_seq < seq_num_median) {
+     if (s - local_seq > seq_num_median) {
+       guess_roc = local_roc - 1;
+-      difference = seq_num_max - s + local_seq;
++      // The return value is the relative difference from local_seq to s.
++      // The original value is negation of its purpose.  According to document
++      // http://www.ietf.org/rfc/rfc3711.txt, when this condition is true, the
++      // resulting new index should be (local_roc-1, s).  But original logic
++      // will end up positive difference and rdbx_check would pass.  Hence after
++      // rdbx_add_index would make local index to be the wrong value because
++      // local index should not be updated in this case.  For example, when
++      // local index is (1, 100) and next sequence is 65530, the wrong updated
++      // index would be (1, 205).
++      difference = s - local_seq - seq_num_max;
+     } else {
+       guess_roc = local_roc;
+       difference = s - local_seq;
+==== //depot/google3/third_party/libsrtp/test/rdbx_driver.c#5 - None ====
+# action=edit type=text
+--- google3/third_party/libsrtp/test/rdbx_driver.c	2010-02-25 06:36:30.000000000 -0800
++++ google3/third_party/libsrtp/test/rdbx_driver.c	2011-05-27 17:56:49.000000000 -0700
+@@ -226,7 +226,7 @@
+    *  test sequential insertion 
+    */
+   printf("\ttesting sequential insertion...");
+-  for (idx=0; idx < num_trials; idx++) {
++  for (idx=0; idx < (uint32_t)num_trials; idx++) {
+     status = rdbx_check_add(&rdbx, idx);
+     if (status)
+       return status;
+@@ -245,7 +245,7 @@
+     printf("warning: no false positive tests performed\n");
+   }
+   printf("\ttesting for false positives...");
+-  for (idx=0; idx < num_fp_trials; idx++) {
++  for (idx=0; idx < (uint32_t)num_fp_trials; idx++) {
+     status = rdbx_check_expect_failure(&rdbx, idx);
+     if (status)
+       return status;
+@@ -269,12 +269,34 @@
+   ut_init(&utc);
+ 
+   printf("\ttesting non-sequential insertion...");  
+-  for (idx=0; idx < num_trials; idx++) {
++  for (idx=0; idx < (uint32_t)num_trials; idx++) {
+     ircvd = ut_next_index(&utc);
+     status = rdbx_check_unordered(&rdbx, ircvd);
+     if (status)
+       return status;
+   }
++  printf("passed\n");
++
++  /*
++   * test a replay condition close to zero.
++   */
++  rdbx_uninit(&rdbx);
++
++  if (rdbx_init(&rdbx, ws) != err_status_ok) {
++    printf("replay_init failed\n");
++    return err_status_init_fail;
++  }
++
++  printf("\ttesting replay close to zero...");
++  status = rdbx_check_add(&rdbx, 1);
++  if (status)
++    return status;
++  status = rdbx_check_expect_failure(&rdbx, 64500);
++  if (status)
++    return status;
++  status = rdbx_check_add(&rdbx, 2);
++  if (status)
++    return status;
+   printf("passed\n");
+ 
+   rdbx_uninit(&rdbx);
+@@ -303,7 +325,7 @@
+ 
+   failures = 0;
+   timer = clock();
+-  for(i=0; i < num_trials; i++) {
++  for(i=0; i < (uint32_t)num_trials; i++) {
+     
+     delta = index_guess(&rdbx.index, &est, i);
+     
+@@ -321,4 +343,3 @@
+ 
+   return (double) CLOCKS_PER_SEC * num_trials / timer;
+ }
+-
diff --git a/googlepatches/google-12-srtp-hide-aes-tables-main.patch b/googlepatches/google-12-srtp-hide-aes-tables-main.patch
new file mode 100644
index 0000000..4f571bf
--- /dev/null
+++ b/googlepatches/google-12-srtp-hide-aes-tables-main.patch
@@ -0,0 +1,50 @@
+Change 22848094 by param@param-gcomm-server on 2011/07/29 11:51:00 *pending*
+
+	Make main in aes_tables hidable.
+	
+	PRESUBMIT=passed
+	R=tschmelcher,jacobly
+	CC=a2a-mobile,third-party-owners
+	DELTA=7  (7 added, 0 deleted, 0 changed)
+	OCL=22848094
+	BUG=5096975
+
+Affected files ...
+
+... //depot/google3/third_party/libsrtp/README.google#9 edit
+... //depot/google3/third_party/libsrtp/tables/aes_tables.c#4 edit
+
+==== //depot/google3/third_party/libsrtp/README.google#9 - /home/param/sources/gcomm-server/google3/third_party/libsrtp/README.google ====
+# action=edit type=text
+--- google3/third_party/libsrtp/README.google	2011-07-22 15:49:10.000000000 -0700
++++ google3/third_party/libsrtp/README.google	2011-08-08 11:37:50.000000000 -0700
+@@ -25,3 +25,7 @@
+ - Fixed a bug related to replay detection when sequence number rolls back
+   arround 0. (Currently contacting libsrtp developers for upstream.)
+ - Adding public.mk and Android.mk for building android flavour of libsrtp.
++- Make main in tables/aes_tables.c hidable. If it is present, it conflicts
++  with main in the application and cause link error when all_load flag is
++  present for the linker command. Can be now hidden using flag
++  HIDE_AES_TABLES_MAIN
+==== //depot/google3/third_party/libsrtp/tables/aes_tables.c#4 - /home/param/sources/gcomm-server/google3/third_party/libsrtp/tables/aes_tables.c ====
+# action=edit type=text
+--- google3/third_party/libsrtp/tables/aes_tables.c	2010-02-25 06:36:30.000000000 -0800
++++ google3/third_party/libsrtp/tables/aes_tables.c	2011-07-29 11:52:25.000000000 -0700
+@@ -198,6 +198,8 @@
+ 
+ #define TABLES_32BIT 1
+ 
++#ifndef HIDE_AES_TABLES_MAIN
++
+ int
+ main(void) {
+   int i;
+@@ -309,6 +311,8 @@
+   
+   return 0;
+ }
++
++#endif // HIDE_AES_TABLES_MAIN
+ 
+ #if AES_INVERSE_TEST
+ 
diff --git a/googlepatches/google-5-buffer-overflow.patch b/googlepatches/google-5-buffer-overflow.patch
new file mode 100644
index 0000000..88d23ce
--- /dev/null
+++ b/googlepatches/google-5-buffer-overflow.patch
@@ -0,0 +1,35 @@
+diff --git a/google3/third_party/libsrtp/crypto/cipher/aes_icm.c b/google3/third_party/libsrtp/crypto/cipher/aes_icm.c
+index d333899..45714c0 100644
+--- a/google3/third_party/libsrtp/crypto/cipher/aes_icm.c
++++ b/google3/third_party/libsrtp/crypto/cipher/aes_icm.c
+@@ -164,18 +164,20 @@ aes_icm_dealloc(cipher_t *c) {
+ err_status_t
+ aes_icm_context_init(aes_icm_ctx_t *c, const uint8_t *key) {
+   v128_t tmp_key;
++  int i;
+ 
+   /* set counter and initial values to 'offset' value */
+   /* FIX!!! this assumes the salt is at key + 16, and thus that the */
+-  /* FIX!!! cipher key length is 16!  Also note this copies past the
+-            end of the 'key' array by 2 bytes! */
+-  v128_copy_octet_string(&c->counter, key + 16);
+-  v128_copy_octet_string(&c->offset, key + 16);
++  /* FIX!!! cipher key length is 16! */
++  for (i = 0; i < 14; i++) {
++    c->counter.v8[i] = key[16 + i];
++    c->offset.v8[i] = key[16 + i];
++  }
+ 
+   /* force last two octets of the offset to zero (for srtp compatibility) */
+   c->offset.v8[14] = c->offset.v8[15] = 0;
+   c->counter.v8[14] = c->counter.v8[15] = 0;
+-  
++
+   /* set tmp_key (for alignment) */
+   v128_copy_octet_string(&tmp_key, key);
+ 
+@@ -508,4 +510,3 @@ cipher_type_t aes_icm = {
+   (cipher_test_case_t *)        &aes_icm_test_case_0,
+   (debug_module_t *)            &mod_aes_icm
+ };
+-
diff --git a/googlepatches/google-6-srtp-driver-fix.patch b/googlepatches/google-6-srtp-driver-fix.patch
new file mode 100644
index 0000000..7d82e74
--- /dev/null
+++ b/googlepatches/google-6-srtp-driver-fix.patch
@@ -0,0 +1,29 @@
+diff --git a/google3/third_party/libsrtp/test/srtp_driver.c b/google3/third_party/libsrtp/test/srtp_driver.c
+index 9bd4c66..f6a84f9 100644
+--- a/google3/third_party/libsrtp/test/srtp_driver.c
++++ b/google3/third_party/libsrtp/test/srtp_driver.c
+@@ -138,7 +138,7 @@ debug_module_t mod_driver = {
+ 
+ int
+ main (int argc, char *argv[]) {
+-  char q;
++  int q;
+   unsigned do_timing_test    = 0;
+   unsigned do_rejection_test = 0;
+   unsigned do_codec_timing   = 0;
+@@ -169,13 +169,13 @@ main (int argc, char *argv[]) {
+     if (status) {
+     printf("error: load of srtp_driver debug module failed "
+            "with error code %d\n", status);
+-    exit(1);   
++    exit(1);
+   }
+ 
+   /* process input arguments */
+   while (1) {
+     q = getopt_s(argc, argv, "trcvld:");
+-    if (q == -1) 
++    if (q == -1)
+       break;
+     switch (q) {
+     case 't':
diff --git a/googlepatches/google-7-srtp-security-fix.patch b/googlepatches/google-7-srtp-security-fix.patch
new file mode 100644
index 0000000..54e3e9e
--- /dev/null
+++ b/googlepatches/google-7-srtp-security-fix.patch
@@ -0,0 +1,91 @@
+diff --git a/google3/third_party/libsrtp/crypto/include/integers.h b/google3/third_party/libsrtp/crypto/include/integers.h
+index 7010efd..3515d13 100644
+--- a/google3/third_party/libsrtp/crypto/include/integers.h
++++ b/google3/third_party/libsrtp/crypto/include/integers.h
+@@ -98,7 +98,6 @@ typedef unsigned short int	uint16_t;
+ typedef unsigned int		uint32_t;
+ #endif
+ 
+-
+ #ifdef NO_64BIT_MATH
+ typedef double uint64_t;
+ /* assert that sizeof(double) == 8 */
+diff --git a/google3/third_party/libsrtp/include/srtp.h b/google3/third_party/libsrtp/include/srtp.h
+index 7f17853..bbaac95 100644
+--- a/google3/third_party/libsrtp/include/srtp.h
++++ b/google3/third_party/libsrtp/include/srtp.h
+@@ -50,10 +50,6 @@
+ extern "C" {
+ #endif
+ 
+-#ifdef _MSC_VER
+-#pragma pack(4)
+-#endif
+-
+ #include "crypto_kernel.h" 
+ 
+ /**
+@@ -930,10 +926,6 @@ srtp_install_event_handler(srtp_event_handler_func_t func);
+ #define SRTCP_E_BYTE_BIT 0x80
+ #define SRTCP_INDEX_MASK 0x7fffffff
+ 
+-#ifdef _MSC_VER
+-#pragma pack()
+-#endif
+-
+ #ifdef __cplusplus
+ }
+ #endif
+diff --git a/google3/third_party/libsrtp/srtp/srtp.c b/google3/third_party/libsrtp/srtp/srtp.c
+index 6010dd4..3fc52ee 100644
+--- a/google3/third_party/libsrtp/srtp/srtp.c
++++ b/google3/third_party/libsrtp/srtp/srtp.c
+@@ -1657,6 +1657,8 @@ srtp_unprotect_rtcp(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len) {
+   srtp_stream_ctx_t *stream;
+   int prefix_len;
+   uint32_t seq_num;
++  int e_bit_in_packet;     /* whether the E-bit was found in the packet */
++  int sec_serv_confidentiality; /* whether confidentiality was requested */
+ 
+   /* we assume the hdr is 32-bit aligned to start */
+   /*
+@@ -1694,7 +1696,10 @@ srtp_unprotect_rtcp(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len) {
+       return err_status_no_ctx;
+     } 
+   }
+-  
++
++  sec_serv_confidentiality = stream->rtcp_services == sec_serv_conf ||
++      stream->rtcp_services == sec_serv_conf_and_auth;
++
+   /* get tag length from stream context */
+   tag_len = auth_get_tag_length(stream->rtcp_auth); 
+ 
+@@ -1714,8 +1719,12 @@ srtp_unprotect_rtcp(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len) {
+    */
+   trailer = (uint32_t *) ((char *) hdr +
+ 		     *pkt_octet_len -(tag_len + sizeof(srtcp_trailer_t)));
+-  if (*((unsigned char *) trailer) & SRTCP_E_BYTE_BIT) {
+-    enc_start = (uint32_t *)hdr + uint32s_in_rtcp_header;  
++  e_bit_in_packet = (*((unsigned char *) trailer) & SRTCP_E_BYTE_BIT) == SRTCP_E_BYTE_BIT;
++  if (e_bit_in_packet != sec_serv_confidentiality) {
++    return err_status_cant_check;
++  }
++  if (sec_serv_confidentiality) {
++    enc_start = (uint32_t *)hdr + uint32s_in_rtcp_header;
+   } else {
+     enc_octet_len = 0;
+     enc_start = NULL; /* this indicates that there's no encryption */
+diff --git a/google3/third_party/libsrtp/test/srtp_driver.c b/google3/third_party/libsrtp/test/srtp_driver.c
+index f6a84f9..3c97072 100644
+--- a/google3/third_party/libsrtp/test/srtp_driver.c
++++ b/google3/third_party/libsrtp/test/srtp_driver.c
+@@ -1246,7 +1246,7 @@ srtp_create_big_policy(srtp_policy_t **list) {
+    * loop over policy list, mallocing a new list and copying values
+    * into it (and incrementing the SSRC value as we go along)
+    */
+-  tmp = NULL;
++  tmp = p = NULL;
+   while (policy_array[i] != NULL) {
+     p  = (srtp_policy_t*) malloc(sizeof(srtp_policy_t));
+     if (p == NULL)
diff --git a/googlepatches/google-8-rdb-crash.patch b/googlepatches/google-8-rdb-crash.patch
new file mode 100644
index 0000000..0286603
--- /dev/null
+++ b/googlepatches/google-8-rdb-crash.patch
@@ -0,0 +1,11 @@
+--- rdb.c	Thu Mar 25 17:38:24 2010
++++ rgb.bak	Fri Mar 19 17:50:47 2010
+@@ -115,7 +115,7 @@ rdb_add_index(rdb_t *rdb, uint32_t index
+ 
+     /* shift the window forward by delta bits*/
+     v128_left_shift(&rdb->bitmask, delta);
+-    v128_set_bit(&rdb->bitmask, rdb_bits_in_bitmask-delta);
++    v128_set_bit(&rdb->bitmask, rdb_bits_in_bitmask - 1);
+     rdb->window_start += delta;
+ 
+   }    
diff --git a/googlepatches/google-9-rdbx-leak-plug.patch b/googlepatches/google-9-rdbx-leak-plug.patch
new file mode 100644
index 0000000..f53861d
--- /dev/null
+++ b/googlepatches/google-9-rdbx-leak-plug.patch
@@ -0,0 +1,298 @@
+diff --git a/google3/third_party/libsrtp/include/srtp_priv.h b/google3/third_party/libsrtp/include/srtp_priv.h
+index cf2274e..3bed757 100644
+--- a/google3/third_party/libsrtp/include/srtp_priv.h
++++ b/google3/third_party/libsrtp/include/srtp_priv.h
+@@ -189,6 +189,13 @@ srtp_stream_init(srtp_stream_t srtp,
+ 
+ 
+ /*
++ * Uninitializes and Deallocates a stream.
++ */
++err_status_t
++srtp_stream_uninit_and_dealloc(srtp_stream_t stream,
++                               srtp_stream_t stream_template);
++
++/*
+  * libsrtp internal datatypes 
+  */
+ 
+diff --git a/google3/third_party/libsrtp/srtp/srtp.c b/google3/third_party/libsrtp/srtp/srtp.c
+index 3fc52ee..314c3e4 100644
+--- a/google3/third_party/libsrtp/srtp/srtp.c
++++ b/google3/third_party/libsrtp/srtp/srtp.c
+@@ -92,35 +92,31 @@ srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
+   str = (srtp_stream_ctx_t *) crypto_alloc(sizeof(srtp_stream_ctx_t));
+   if (str == NULL)
+     return err_status_alloc_fail;
+-  *str_ptr = str;  
+-  
++  *str_ptr = str;
++
+   /* allocate cipher */
+   stat = crypto_kernel_alloc_cipher(p->rtp.cipher_type, 
+ 				    &str->rtp_cipher, 
+ 				    p->rtp.cipher_key_len); 
+   if (stat) {
+-    crypto_free(str);
+-    return stat;
++    goto err_rtp_cipher_alloc;
+   }
+ 
+   /* allocate auth function */
+   stat = crypto_kernel_alloc_auth(p->rtp.auth_type, 
+ 				  &str->rtp_auth,
+ 				  p->rtp.auth_key_len, 
+-				  p->rtp.auth_tag_len); 
++				  p->rtp.auth_tag_len);
++
+   if (stat) {
+-    cipher_dealloc(str->rtp_cipher);
+-    crypto_free(str);
+-    return stat;
++    goto err_rtp_auth_alloc;
+   }
+-  
++
+   /* allocate key limit structure */
+   str->limit = (key_limit_ctx_t*) crypto_alloc(sizeof(key_limit_ctx_t));
+   if (str->limit == NULL) {
+-    auth_dealloc(str->rtp_auth);
+-    cipher_dealloc(str->rtp_cipher);
+-    crypto_free(str); 
+-    return err_status_alloc_fail;
++    stat = err_status_alloc_fail;
++    goto err_limit_alloc;
+   }
+ 
+   /*
+@@ -129,13 +125,9 @@ srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
+    */
+   stat = crypto_kernel_alloc_cipher(p->rtcp.cipher_type, 
+ 				    &str->rtcp_cipher, 
+-				    p->rtcp.cipher_key_len); 
++				    p->rtcp.cipher_key_len);
+   if (stat) {
+-    auth_dealloc(str->rtp_auth);
+-    cipher_dealloc(str->rtp_cipher);
+-    crypto_free(str->limit);
+-    crypto_free(str);
+-    return stat;
++    goto err_rtcp_cipher_alloc;
+   }
+ 
+   /* allocate auth function */
+@@ -144,33 +136,37 @@ srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
+ 				  p->rtcp.auth_key_len, 
+ 				  p->rtcp.auth_tag_len); 
+   if (stat) {
+-    cipher_dealloc(str->rtcp_cipher);
+-    auth_dealloc(str->rtp_auth);
+-    cipher_dealloc(str->rtp_cipher);
+-    crypto_free(str->limit);
+-    crypto_free(str);
+-   return stat;
+-  }  
++    goto err_rtcp_auth_alloc;
++  }
+ 
+   /* allocate ekt data associated with stream */
+   stat = ekt_alloc(&str->ekt, p->ekt);
+   if (stat) {
+-    auth_dealloc(str->rtcp_auth);
+-    cipher_dealloc(str->rtcp_cipher);
+-    auth_dealloc(str->rtp_auth);
+-    cipher_dealloc(str->rtp_cipher);
+-    crypto_free(str->limit);
+-    crypto_free(str);
+-   return stat;    
++    goto err_ekt_alloc;
+   }
+ 
+   return err_status_ok;
++
++err_ekt_alloc:
++  auth_dealloc(str->rtcp_auth);
++err_rtcp_auth_alloc:
++  cipher_dealloc(str->rtcp_cipher);
++err_rtcp_cipher_alloc:
++  crypto_free(str->limit);
++err_limit_alloc:
++  auth_dealloc(str->rtp_auth);
++err_rtp_auth_alloc:
++  cipher_dealloc(str->rtp_cipher);
++err_rtp_cipher_alloc:
++  crypto_free(str);
++  return stat;
+ }
+ 
+ err_status_t
+-srtp_stream_dealloc(srtp_t session, srtp_stream_ctx_t *stream) { 
++srtp_stream_dealloc(srtp_stream_ctx_t *stream,
++                    srtp_stream_ctx_t *stream_template) {
+   err_status_t status;
+-  
++
+   /*
+    * we use a conservative deallocation strategy - if any deallocation
+    * fails, then we report that fact without trying to deallocate
+@@ -178,41 +174,29 @@ srtp_stream_dealloc(srtp_t session, srtp_stream_ctx_t *stream) {
+    */
+ 
+   /* deallocate cipher, if it is not the same as that in template */
+-  if (session->stream_template
+-      && stream->rtp_cipher == session->stream_template->rtp_cipher) {
+-    /* do nothing */
+-  } else {
++  if (!stream_template || stream->rtp_cipher != stream_template->rtp_cipher) {
+     status = cipher_dealloc(stream->rtp_cipher); 
+     if (status) 
+       return status;
+   }
+ 
+   /* deallocate auth function, if it is not the same as that in template */
+-  if (session->stream_template
+-      && stream->rtp_auth == session->stream_template->rtp_auth) {
+-    /* do nothing */
+-  } else {
++  if (!stream_template || stream->rtp_auth != stream_template->rtp_auth) {
+     status = auth_dealloc(stream->rtp_auth);
+     if (status)
+       return status;
+   }
+ 
+   /* deallocate key usage limit, if it is not the same as that in template */
+-  if (session->stream_template
+-      && stream->limit == session->stream_template->limit) {
+-    /* do nothing */
+-  } else {
++  if (!stream_template || stream->limit != stream_template->limit) {
+     crypto_free(stream->limit);
+-  }   
++  }
+ 
+-  /* 
++  /*
+    * deallocate rtcp cipher, if it is not the same as that in
+-   * template 
++   * template
+    */
+-  if (session->stream_template
+-      && stream->rtcp_cipher == session->stream_template->rtcp_cipher) {
+-    /* do nothing */
+-  } else {
++  if (!stream_template || stream->rtcp_cipher != stream_template->rtcp_cipher) {
+     status = cipher_dealloc(stream->rtcp_cipher); 
+     if (status) 
+       return status;
+@@ -222,17 +206,14 @@ srtp_stream_dealloc(srtp_t session, srtp_stream_ctx_t *stream) {
+    * deallocate rtcp auth function, if it is not the same as that in
+    * template 
+    */
+-  if (session->stream_template
+-      && stream->rtcp_auth == session->stream_template->rtcp_auth) {
+-    /* do nothing */
+-  } else {
++  if (!stream_template || stream->rtcp_auth != stream_template->rtcp_auth) {
+     status = auth_dealloc(stream->rtcp_auth);
+     if (status)
+       return status;
+   }
+ 
+   /* DAM - need to deallocate EKT here */
+-  
++
+   /* deallocate srtp stream context */
+   crypto_free(stream);
+ 
+@@ -549,7 +530,12 @@ srtp_stream_init(srtp_stream_ctx_t *srtp,
+    }
+ 
+    return err_status_ok;  
+- }
++}
++
++err_status_t
++srtp_stream_uninit(srtp_stream_ctx_t *srtp) {
++  return rdbx_uninit(&srtp->rtp_rdbx);
++}
+ 
+ 
+  /*
+@@ -1201,28 +1187,16 @@ srtp_dealloc(srtp_t session) {
+   stream = session->stream_list;
+   while (stream != NULL) {
+     srtp_stream_t next = stream->next;
+-    status = srtp_stream_dealloc(session, stream);
+-    if (status)
++    status = srtp_stream_uninit_and_dealloc(stream, session->stream_template);
++    if (status) {
+       return status;
++    }
+     stream = next;
+   }
+-  
++
+   /* deallocate stream template, if there is one */
+   if (session->stream_template != NULL) {
+-    status = auth_dealloc(session->stream_template->rtcp_auth); 
+-    if (status) 
+-      return status; 
+-    status = cipher_dealloc(session->stream_template->rtcp_cipher); 
+-    if (status) 
+-      return status; 
+-    crypto_free(session->stream_template->limit);
+-    status = cipher_dealloc(session->stream_template->rtp_cipher); 
+-    if (status) 
+-      return status; 
+-    status = auth_dealloc(session->stream_template->rtp_auth);
+-    if (status)
+-      return status;
+-    crypto_free(session->stream_template);
++    status = srtp_stream_uninit_and_dealloc(session->stream_template, NULL);
+   }
+ 
+   /* deallocate session context */
+@@ -1287,7 +1261,6 @@ srtp_add_stream(srtp_t session,
+     crypto_free(tmp);
+     return err_status_bad_param;
+   }
+-    
+   return err_status_ok;
+ }
+ 
+@@ -1334,12 +1307,11 @@ srtp_create(srtp_t *session,               /* handle for session     */
+ err_status_t
+ srtp_remove_stream(srtp_t session, uint32_t ssrc) {
+   srtp_stream_ctx_t *stream, *last_stream;
+-  err_status_t status;
+ 
+   /* sanity check arguments */
+   if (session == NULL)
+     return err_status_bad_param;
+-  
++
+   /* find stream in list; complain if not found */
+   last_stream = stream = session->stream_list;
+   while ((stream != NULL) && (ssrc != stream->ssrc)) {
+@@ -1352,8 +1324,20 @@ srtp_remove_stream(srtp_t session, uint32_t ssrc) {
+   /* remove stream from the list */
+   last_stream->next = stream->next;
+ 
++  return srtp_stream_uninit_and_dealloc(stream, session->stream_template);
++}
++
++err_status_t
++srtp_stream_uninit_and_dealloc(srtp_stream_ctx_t *stream,
++                               srtp_stream_ctx_t *stream_template) {
++  err_status_t status;
++  /* deallocate rdbx data */
++  status = srtp_stream_uninit(stream);
++  if (status)
++    return status;
++
+   /* deallocate the stream */
+-  status = srtp_stream_dealloc(session, stream);
++  status = srtp_stream_dealloc(stream, stream_template);
+   if (status)
+     return status;
+ 
diff --git a/googlepatches/vidyo-1-srtp-win.patch b/googlepatches/vidyo-1-srtp-win.patch
new file mode 100644
index 0000000..cb6da56
--- /dev/null
+++ b/googlepatches/vidyo-1-srtp-win.patch
@@ -0,0 +1,297 @@
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-pristine/config.hw srtp/config.hw
+--- srtp-pristine/config.hw	2007-05-23 13:40:21.000000000 -0400
++++ srtp/config.hw	2009-04-22 17:58:01.000000000 -0400
+@@ -1,7 +1,7 @@
+ /* crypto/include/config.h.  Generated by configure.  */
+ /* config_in.h.  Generated from configure.in by autoheader.  */
+ 
+-#ifdef (_MSC_VER >= 1400)
++#if (_MSC_VER >= 1400)
+ # define HAVE_RAND_S	1
+ #endif
+ 
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-pristine/crypto/cipher/aes_icm.c srtp/crypto/cipher/aes_icm.c
+--- srtp-pristine/crypto/cipher/aes_icm.c	2006-07-18 15:45:46.000000000 -0400
++++ srtp/crypto/cipher/aes_icm.c	2009-04-22 17:58:01.000000000 -0400
+@@ -210,7 +210,7 @@ aes_icm_set_octet(aes_icm_ctx_t *c,
+ 							  ((high32(octet_num) & 0x0f)<<(32-4)) |
+ 							   (low32(octet_num) >> 4));
+ #else
+-  int tail_num       = octet_num % 16;
++  int tail_num       = (int)(octet_num % 16);
+   uint64_t block_num = octet_num / 16;
+ #endif
+   
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-pristine/install-win.bat srtp/install-win.bat
+--- srtp-pristine/install-win.bat	1969-12-31 19:00:00.000000000 -0500
++++ srtp/install-win.bat	2009-04-22 17:58:01.000000000 -0400
+@@ -0,0 +1,31 @@
++:: Installs from srtp windows build directory to directory specified on
++:: command line
++
++
++@if "%1"=="" (
++	echo "Usage: %~nx0 destdir"
++	exit /b 1
++) else (
++	set destdir=%1
++)
++
++@if not exist %destdir% (
++   echo %destdir% not found
++   exit /b 1
++)
++
++@for %%d in (include\srtp.h crypto\include\crypto.h Debug\srtp.lib Release\srtp.lib) do (
++	if not exist "%%d" (
++	   echo "%%d not found: are you in the right directory?"
++	   exit /b 1
++	)
++)
++
++mkdir %destdir%\include
++mkdir %destdir%\include\srtp
++mkdir %destdir%\lib
++
++copy include\*.h %destdir%\include\srtp
++copy crypto\include\*.h %destdir%\include\srtp
++copy Release\srtp.lib %destdir%\lib\srtp.lib
++copy Debug\srtp.lib %destdir%\lib\srtpd.lib
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-pristine/srtp/ekt.c srtp/srtp/ekt.c
+--- srtp-pristine/srtp/ekt.c	2007-06-15 14:36:09.000000000 -0400
++++ srtp/srtp/ekt.c	2009-04-22 18:47:06.000000000 -0400
+@@ -91,27 +91,27 @@ ekt_octets_after_base_tag(ekt_stream_t e
+ }
+ 
+ inline ekt_spi_t
+-srtcp_packet_get_ekt_spi(const void *packet_start, unsigned pkt_octet_len) {
+-  void *spi_location;
++srtcp_packet_get_ekt_spi(const uint8_t *packet_start, unsigned pkt_octet_len) {
++  const uint8_t *spi_location;
+   
+   spi_location = packet_start + (pkt_octet_len - EKT_SPI_LEN);
+   
+-  return *((ekt_spi_t *)spi_location);
++  return *((const ekt_spi_t *)spi_location);
+ }
+ 
+ inline uint32_t
+-srtcp_packet_get_ekt_roc(const void *packet_start, unsigned pkt_octet_len) {
+-  void *roc_location;
++srtcp_packet_get_ekt_roc(const uint8_t *packet_start, unsigned pkt_octet_len) {
++  const uint8_t *roc_location;
+   
+   roc_location = packet_start + (pkt_octet_len - EKT_OCTETS_AFTER_ROC);
+   
+-  return *((uint32_t *)roc_location);
++  return *((const uint32_t *)roc_location);
+ }
+ 
+-inline void *
+-srtcp_packet_get_emk_location(const void *packet_start, 
++inline const uint8_t *
++srtcp_packet_get_emk_location(const uint8_t *packet_start, 
+ 			      unsigned pkt_octet_len) {
+-  void *location;
++  const uint8_t *location;
+   
+   location = packet_start + (pkt_octet_len - EKT_OCTETS_AFTER_BASE_TAG);
+ 
+@@ -161,7 +161,7 @@ srtp_stream_init_from_ekt(srtp_stream_t 
+ 			  const void *srtcp_hdr,
+ 			  unsigned pkt_octet_len) {
+   err_status_t err;
+-  uint8_t *master_key;
++  const uint8_t *master_key;
+   srtp_policy_t srtp_policy;
+   unsigned master_key_len;
+   uint32_t roc;
+@@ -179,7 +179,7 @@ srtp_stream_init_from_ekt(srtp_stream_t 
+ 
+   /* decrypt the Encrypted Master Key field */
+   master_key = srtcp_packet_get_emk_location(srtcp_hdr, pkt_octet_len);
+-  aes_decrypt_with_raw_key(master_key, stream->ekt->data->ekt_dec_key);
++  aes_decrypt_with_raw_key((void*)master_key, stream->ekt->data->ekt_dec_key);
+ 
+   /* set the SRTP ROC */
+   roc = srtcp_packet_get_ekt_roc(srtcp_hdr, pkt_octet_len);
+@@ -201,7 +201,7 @@ ekt_write_data(ekt_stream_t ekt,
+   uint32_t roc;
+   uint16_t isn;
+   unsigned emk_len;
+-  void *packet;
++  uint8_t *packet;
+ 
+   /* if the pointer ekt is NULL, then EKT is not in effect */
+   if (!ekt) {
+@@ -211,7 +211,7 @@ ekt_write_data(ekt_stream_t ekt,
+ 
+   /* write zeros into the location of the base tag */
+   octet_string_set_to_zero(base_tag, base_tag_len);
+-  packet = base_tag + base_tag_len;
++  packet = (uint8_t*)base_tag + base_tag_len;
+ 
+   /* copy encrypted master key into packet */
+   emk_len = ekt_octets_after_base_tag(ekt);
+@@ -221,14 +221,14 @@ ekt_write_data(ekt_stream_t ekt,
+   packet += emk_len;
+ 
+   /* copy ROC into packet */
+-  roc = pkt_index >> 16;
++  roc = (uint32_t)(pkt_index >> 16);
+   *((uint32_t *)packet) = be32_to_cpu(roc);
+   debug_print(mod_srtp, "writing EKT ROC: %s,", 
+ 	      octet_string_hex_string(packet, sizeof(roc)));
+   packet += sizeof(roc);
+ 
+   /* copy ISN into packet */
+-  isn = pkt_index;
++  isn = (uint16_t)pkt_index;
+   *((uint16_t *)packet) = htons(isn);
+   debug_print(mod_srtp, "writing EKT ISN: %s,", 
+ 	      octet_string_hex_string(packet, sizeof(isn)));
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-pristine/srtp.def srtp/srtp.def
+--- srtp-pristine/srtp.def	2006-05-22 16:46:21.000000000 -0400
++++ srtp/srtp.def	2009-04-22 17:58:01.000000000 -0400
+@@ -89,4 +89,3 @@ aes_icm_encrypt_ismacryp
+ aes_icm_alloc_ismacryp
+ crypto_alloc
+ crypto_free
+-\ No newline at end of file
+\ No newline at end of file
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-pristine/srtp.sln srtp/srtp.sln
+--- srtp-pristine/srtp.sln	1969-12-31 19:00:00.000000000 -0500
++++ srtp/srtp.sln	2009-04-22 17:58:01.000000000 -0400
+@@ -0,0 +1,26 @@
++﻿
++Microsoft Visual Studio Solution File, Format Version 9.00
++# Visual C++ Express 2005
++Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "srtp", "srtp.vcproj", "{EEF031CB-FED8-451E-A471-91EC8D4F6750}"
++EndProject
++Global
++	GlobalSection(SolutionConfigurationPlatforms) = preSolution
++		Debug Dll|Win32 = Debug Dll|Win32
++		Debug|Win32 = Debug|Win32
++		Release Dll|Win32 = Release Dll|Win32
++		Release|Win32 = Release|Win32
++	EndGlobalSection
++	GlobalSection(ProjectConfigurationPlatforms) = postSolution
++		{EEF031CB-FED8-451E-A471-91EC8D4F6750}.Debug Dll|Win32.ActiveCfg = Debug Dll|Win32
++		{EEF031CB-FED8-451E-A471-91EC8D4F6750}.Debug Dll|Win32.Build.0 = Debug Dll|Win32
++		{EEF031CB-FED8-451E-A471-91EC8D4F6750}.Debug|Win32.ActiveCfg = Debug|Win32
++		{EEF031CB-FED8-451E-A471-91EC8D4F6750}.Debug|Win32.Build.0 = Debug|Win32
++		{EEF031CB-FED8-451E-A471-91EC8D4F6750}.Release Dll|Win32.ActiveCfg = Release Dll|Win32
++		{EEF031CB-FED8-451E-A471-91EC8D4F6750}.Release Dll|Win32.Build.0 = Release Dll|Win32
++		{EEF031CB-FED8-451E-A471-91EC8D4F6750}.Release|Win32.ActiveCfg = Release|Win32
++		{EEF031CB-FED8-451E-A471-91EC8D4F6750}.Release|Win32.Build.0 = Release|Win32
++	EndGlobalSection
++	GlobalSection(SolutionProperties) = preSolution
++		HideSolutionNode = FALSE
++	EndGlobalSection
++EndGlobal
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-pristine/srtp.vcproj srtp/srtp.vcproj
+--- srtp-pristine/srtp.vcproj	2006-05-22 16:46:21.000000000 -0400
++++ srtp/srtp.vcproj	2009-04-22 17:58:01.000000000 -0400
+@@ -49,7 +49,7 @@
+ 				PreprocessorDefinitions="WIN32;_DEBUG;_LIB;HAVE_CONFIG_H"
+ 				MinimalRebuild="true"
+ 				BasicRuntimeChecks="3"
+-				RuntimeLibrary="3"
++				RuntimeLibrary="1"
+ 				StructMemberAlignment="0"
+ 				UsePrecompiledHeader="0"
+ 				WarningLevel="3"
+@@ -116,7 +116,7 @@
+ 				Name="VCCLCompilerTool"
+ 				AdditionalIncludeDirectories="crypto/include;include"
+ 				PreprocessorDefinitions="WIN32;NDEBUG;_LIB;HAVE_CONFIG_H"
+-				RuntimeLibrary="2"
++				RuntimeLibrary="0"
+ 				StructMemberAlignment="0"
+ 				UsePrecompiledHeader="0"
+ 				WarningLevel="3"
+@@ -324,6 +324,10 @@
+ 			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
+ 			>
+ 			<File
++				RelativePath=".\srtp\ekt.c"
++				>
++			</File>
++			<File
+ 				RelativePath=".\srtp\srtp.c"
+ 				>
+ 			</File>
+@@ -484,10 +488,6 @@
+ 				>
+ 			</File>
+ 			<File
+-				RelativePath=".\crypto\include\crypto_math.h"
+-				>
+-			</File>
+-			<File
+ 				RelativePath=".\crypto\include\crypto_types.h"
+ 				>
+ 			</File>
+@@ -500,6 +500,10 @@
+ 				>
+ 			</File>
+ 			<File
++				RelativePath=".\include\ekt.h"
++				>
++			</File>
++			<File
+ 				RelativePath=".\crypto\include\err.h"
+ 				>
+ 			</File>
+@@ -516,10 +520,6 @@
+ 				>
+ 			</File>
+ 			<File
+-				RelativePath=".\crypto\include\kernel_compat.h"
+-				>
+-			</File>
+-			<File
+ 				RelativePath=".\crypto\include\key.h"
+ 				>
+ 			</File>
+@@ -548,10 +548,6 @@
+ 				>
+ 			</File>
+ 			<File
+-				RelativePath=".\include\rtp.h"
+-				>
+-			</File>
+-			<File
+ 				RelativePath=".\crypto\include\sha1.h"
+ 				>
+ 			</File>
+@@ -560,15 +556,15 @@
+ 				>
+ 			</File>
+ 			<File
+-				RelativePath=".\crypto\include\stat.h"
++				RelativePath=".\include\srtp_priv.h"
+ 				>
+ 			</File>
+ 			<File
+-				RelativePath=".\include\ut_sim.h"
++				RelativePath=".\crypto\include\stat.h"
+ 				>
+ 			</File>
+ 			<File
+-				RelativePath=".\crypto\include\xfm.h"
++				RelativePath=".\include\ut_sim.h"
+ 				>
+ 			</File>
+ 		</Filter>
+@@ -579,6 +575,10 @@
+ 			>
+ 		</Filter>
+ 		<File
++			RelativePath=".\config.hw"
++			>
++		</File>
++		<File
+ 			RelativePath=".\srtp.def"
+ 			>
+ 		</File>
diff --git a/googlepatches/vidyo-2-srtp-lin.patch b/googlepatches/vidyo-2-srtp-lin.patch
new file mode 100644
index 0000000..29e82ed
--- /dev/null
+++ b/googlepatches/vidyo-2-srtp-lin.patch
@@ -0,0 +1,95 @@
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-win/Makefile.in srtp/Makefile.in
+--- srtp-win/Makefile.in	2007-06-15 14:17:39.000000000 -0400
++++ srtp/Makefile.in	2009-04-22 18:25:43.000000000 -0400
+@@ -26,7 +26,7 @@ runtest: build_table_apps test
+ 	test/roc_driver$(EXE) -v >/dev/null
+ 	test/replay_driver$(EXE) -v >/dev/null
+ 	test/dtls_srtp_driver$(EXE) >/dev/null
+-	cd test; ./rtpw_test.sh >/dev/null	
++	cd test; $(abspath $(srcdir))/test/rtpw_test.sh >/dev/null	
+ 	@echo "libsrtp test applications passed."
+ 	$(MAKE) -C crypto runtest
+ 
+@@ -189,18 +189,20 @@ libsrtpdoc:
+ .PHONY: clean superclean install
+ 
+ install:
+-	@if [ -d $(DESTDIR)$(includedir)/srtp ]; then \
++	@if [ -r $(DESTDIR)$(includedir)/srtp/srtp.h ]; then \
+ 	   echo "you should run 'make uninstall' first"; exit 1;  \
+ 	fi
+ 	$(INSTALL) -d $(DESTDIR)$(includedir)/srtp
+ 	$(INSTALL) -d $(DESTDIR)$(libdir)
+-	cp include/*.h $(DESTDIR)$(includedir)/srtp  
+-	cp crypto/include/*.h $(DESTDIR)$(includedir)/srtp
++	cp $(srcdir)/include/*.h $(DESTDIR)$(includedir)/srtp  
++	cp $(srcdir)/crypto/include/*.h $(DESTDIR)$(includedir)/srtp
++	if [ "$(srcdir)" != "." ]; then cp crypto/include/*.h $(DESTDIR)$(includedir)/srtp; fi
+ 	if [ -f libsrtp.a ]; then cp libsrtp.a $(DESTDIR)$(libdir)/; fi
+ 
+ uninstall:
+-	rm -rf $(DESTDIR)$(includedir)/srtp
+-	rm -rf $(DESTDIR)$(libdir)/libsrtp.a
++	rm -f $(DESTDIR)$(includedir)/srtp/*.h
++	rm -f $(DESTDIR)$(libdir)/libsrtp.a
++	-rmdir $(DESTDIR)$(includedir)/srtp
+ 
+ clean:
+ 	rm -rf $(cryptobj) $(srtpobj) $(cryptomath) TAGS \
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-win/srtp/ekt.c srtp/srtp/ekt.c
+--- srtp-win/srtp/ekt.c	2009-04-22 18:47:06.000000000 -0400
++++ srtp/srtp/ekt.c	2009-04-22 18:50:51.000000000 -0400
+@@ -131,6 +131,9 @@ ekt_alloc(ekt_stream_t *stream_data, ekt
+     return err_status_ok;
+   }
+ 
++  /* TODO */
++  *stream_data = NULL;
++
+   return err_status_ok;
+ }
+ 
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-win/test/dtls_srtp_driver.c srtp/test/dtls_srtp_driver.c
+--- srtp-win/test/dtls_srtp_driver.c	2006-07-17 16:41:22.000000000 -0400
++++ srtp/test/dtls_srtp_driver.c	2009-04-23 15:50:26.000000000 -0400
+@@ -183,6 +183,7 @@ test_dtls_srtp() {
+   err = crypto_policy_set_from_profile_for_rtcp(&policy.rtcp, profile);
+   if (err) return err;
+   policy.ssrc.type  = ssrc_any_inbound;
++  policy.ekt = NULL;
+   policy.next = NULL;
+     
+   err = srtp_add_stream(s, &policy);
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-win/test/rtpw_test.sh srtp/test/rtpw_test.sh
+--- srtp-win/test/rtpw_test.sh	2006-06-13 11:17:57.000000000 -0400
++++ srtp/test/rtpw_test.sh	2009-04-22 18:30:27.000000000 -0400
+@@ -4,7 +4,7 @@
+ # 
+ # tests the rtpw sender and receiver functions
+ 
+-RTPW=rtpw
++RTPW=./rtpw
+ DEST_PORT=9999
+ DURATION=3
+ 
+@@ -18,7 +18,7 @@ ARGS="-k $key -ae"
+ # they are killed, those processes will linger.  Re-running the script
+ # will get rid of them.
+ 
+-killall rtpw 2&>/dev/null
++killall rtpw 2>/dev/null
+ 
+ if test -x $RTPW; then
+ 
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-win/test/srtp_driver.c srtp/test/srtp_driver.c
+--- srtp-win/test/srtp_driver.c	2007-06-15 14:17:40.000000000 -0400
++++ srtp/test/srtp_driver.c	2009-04-22 18:20:27.000000000 -0400
+@@ -153,7 +153,7 @@ main (int argc, char *argv[]) {
+   if (sizeof(srtp_hdr_t) != 12) {
+      printf("error: srtp_hdr_t has incorrect size"
+ 	    "(size is %ld bytes, expected 12)\n", 
+-	    sizeof(srtp_hdr_t));
++	    (long)sizeof(srtp_hdr_t));
+     exit(1);
+   }
+ 
diff --git a/googlepatches/vidyo-3-srtp-ws.patch b/googlepatches/vidyo-3-srtp-ws.patch
new file mode 100644
index 0000000..c8896e0
--- /dev/null
+++ b/googlepatches/vidyo-3-srtp-ws.patch
@@ -0,0 +1,937 @@
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-lin/crypto/include/crypto_math.h srtp/crypto/include/crypto_math.h
+--- srtp-lin/crypto/include/crypto_math.h	2006-06-08 13:00:27.000000000 -0400
++++ srtp/crypto/include/crypto_math.h	2009-04-22 19:03:15.000000000 -0400
+@@ -233,40 +233,6 @@ void
+ octet_string_set_to_zero(uint8_t *s, int len);
+ 
+ 
+-/*
+- * functions manipulating bit_vector_t 
+- *
+- * A bitvector_t consists of an array of words and an integer
+- * representing the number of significant bits stored in the array.
+- * The bits are packed as follows: the least significant bit is that
+- * of word[0], while the most significant bit is the nth most
+- * significant bit of word[m], where length = bits_per_word * m + n.
+- * 
+- */
+-
+-#define bits_per_word  32
+-#define bytes_per_word 4
+-
+-typedef struct {
+-  uint32_t length;   
+-  uint32_t *word;
+-} bitvector_t;
+-
+-int
+-bitvector_alloc(bitvector_t *v, unsigned long length);
+-
+-void
+-bitvector_set_bit(bitvector_t *v, int bit_index);
+-
+-int
+-bitvector_get_bit(const bitvector_t *v, int bit_index);
+-
+-int
+-bitvector_print_hex(const bitvector_t *v, FILE *stream);
+-
+-int
+-bitvector_set_from_hex(bitvector_t *v, char *string);
+-
+ #endif /* MATH_H */
+ 
+ 
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-lin/crypto/include/datatypes.h srtp/crypto/include/datatypes.h
+--- srtp-lin/crypto/include/datatypes.h	2006-07-12 18:41:57.000000000 -0400
++++ srtp/crypto/include/datatypes.h	2009-04-22 19:20:01.000000000 -0400
+@@ -424,4 +424,83 @@ static inline uint64_t be64_to_cpu(uint6
+ 
+ #endif /* WORDS_BIGENDIAN */
+ 
++/*
++ * functions manipulating bitvector_t 
++ *
++ * A bitvector_t consists of an array of words and an integer
++ * representing the number of significant bits stored in the array.
++ * The bits are packed as follows: the least significant bit is that
++ * of word[0], while the most significant bit is the nth most
++ * significant bit of word[m], where length = bits_per_word * m + n.
++ * 
++ */
++
++#define bits_per_word  32
++#define bytes_per_word 4
++
++typedef struct {
++  uint32_t length;   
++  uint32_t *word;
++} bitvector_t;
++
++
++#define _bitvector_get_bit(v, bit_index)				\
++(									\
++ ((((v)->word[((bit_index) >> 5)]) >> ((bit_index) & 31)) & 1)		\
++)
++
++
++#define _bitvector_set_bit(v, bit_index)				\
++(									\
++ (((v)->word[((bit_index) >> 5)] |= ((uint32_t)1 << ((bit_index) & 31)))) \
++)
++
++#define _bitvector_clear_bit(v, bit_index)				\
++(									\
++ (((v)->word[((bit_index) >> 5)] &= ~((uint32_t)1 << ((bit_index) & 31)))) \
++)
++
++#define _bitvector_get_length(v)					\
++(									\
++ ((v)->length)								\
++)
++
++#ifdef DATATYPES_USE_MACROS  /* little functions are really macros */
++
++#define bitvector_get_bit(v, bit_index) _bitvector_get_bit(v, bit_index)
++#define bitvector_set_bit(v, bit_index) _bitvector_set_bit(v, bit_index)
++#define bitvector_clear_bit(v, bit_index) _bitvector_clear_bit(v, bit_index)
++#define bitvector_get_length(v) _bitvector_get_length(v)
++
++#else
++
++int
++bitvector_get_bit(const bitvector_t *v, int bit_index);
++
++void
++bitvector_set_bit(bitvector_t *v, int bit_index);
++
++void
++bitvector_clear_bit(bitvector_t *v, int bit_index);
++
++unsigned long
++bitvector_get_length(const bitvector_t *v);
++
++#endif
++
++int
++bitvector_alloc(bitvector_t *v, unsigned long length);
++
++void
++bitvector_dealloc(bitvector_t *v);
++
++void
++bitvector_set_to_zero(bitvector_t *x);
++
++void
++bitvector_left_shift(bitvector_t *x, int index);
++
++char *
++bitvector_bit_string(bitvector_t *x, char* buf, int len);
++
+ #endif /* _DATATYPES_H */
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-lin/crypto/include/rdbx.h srtp/crypto/include/rdbx.h
+--- srtp-lin/crypto/include/rdbx.h	2007-06-15 14:17:40.000000000 -0400
++++ srtp/crypto/include/rdbx.h	2009-04-22 19:03:15.000000000 -0400
+@@ -46,19 +46,29 @@ typedef uint64_t xtd_seq_num_t;
+ 
+ typedef struct {
+   xtd_seq_num_t index;
+-  v128_t bitmask;
++  bitvector_t bitmask;
+ } rdbx_t;
+ 
+ 
+ /*
+- * rdbx_init(rdbx_ptr)
++ * rdbx_init(rdbx_ptr, ws)
+  *
+- * initializes the rdbx pointed to by its argument, setting the
+- * rollover counter and sequence number to zero
++ * initializes the rdbx pointed to by its argument with the window size ws,
++ * setting the rollover counter and sequence number to zero
+  */
+ 
+ err_status_t
+-rdbx_init(rdbx_t *rdbx);
++rdbx_init(rdbx_t *rdbx, unsigned long ws);
++
++
++/*
++ * rdbx_uninit(rdbx_ptr)
++ *
++ * frees memory associated with the rdbx
++ */
++
++err_status_t
++rdbx_uninit(rdbx_t *rdbx);
+ 
+ 
+ /*
+@@ -127,6 +137,15 @@ rdbx_get_packet_index(const rdbx_t *rdbx
+  * api instead!
+  */
+ 
++/*
++ * rdbx_get_ws(rdbx_ptr)
++ *
++ * gets the window size which was used to initialize the rdbx
++ */
++
++unsigned long
++rdbx_get_window_size(const rdbx_t *rdbx);
++
+ 
+ /* index_init(&pi) initializes a packet index pi (sets it to zero) */
+ 
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-lin/crypto/math/datatypes.c srtp/crypto/math/datatypes.c
+--- srtp-lin/crypto/math/datatypes.c	2006-07-18 15:45:46.000000000 -0400
++++ srtp/crypto/math/datatypes.c	2009-04-22 19:03:15.000000000 -0400
+@@ -387,6 +387,124 @@ v128_left_shift(v128_t *x, int index) {
+ 
+ }
+ 
++/* functions manipulating bitvector_t */
++
++#ifndef DATATYPES_USE_MACROS /* little functions are not macros */
++
++int
++bitvector_get_bit(const bitvector_t *v, int bit_index)
++{
++  return _bitvector_get_bit(v, bit_index);
++}
++
++void
++bitvector_set_bit(bitvector_t *v, int bit_index)
++{
++  _bitvector_set_bit(v, bit_index);
++}
++
++void
++bitvector_clear_bit(bitvector_t *v, int bit_index)
++{
++  _bitvector_clear_bit(v, bit_index);
++}
++
++
++#endif /* DATATYPES_USE_MACROS */
++
++int
++bitvector_alloc(bitvector_t *v, unsigned long length) {
++  unsigned long l;
++
++  /* Round length up to a multiple of bits_per_word */
++  length = (length + bits_per_word - 1) & ~(unsigned long)((bits_per_word - 1));
++
++  l = length / bits_per_word * bytes_per_word;
++
++  /* allocate memory, then set parameters */
++  if (l == 0)
++	v->word = NULL;
++  else {
++	v->word = (uint32_t*)crypto_alloc(l);
++	if (v->word == NULL) {
++	  v->word = NULL;
++	  v->length = 0;
++	  return -1;
++	}
++  }
++  v->length = length;
++
++  /* initialize bitvector to zero */
++  bitvector_set_to_zero(v);
++
++  return 0;
++}
++
++
++void
++bitvector_dealloc(bitvector_t *v) {
++  if (v->word != NULL)
++	crypto_free(v->word);
++  v->word = NULL;
++  v->length = 0;
++}
++
++void
++bitvector_set_to_zero(bitvector_t *x)
++{
++	/* C99 guarantees that memset(0) will set the value 0 for uint32_t */
++	memset(x->word, 0, x->length >> 3);
++}
++
++char *
++bitvector_bit_string(bitvector_t *x, char* buf, int len) {
++  int j, index;
++  uint32_t mask;
++  
++  for (j=index=0; j < (int)(x->length>>5) && index < len-1; j++) {
++    for (mask=0x80000000; mask > 0; mask >>= 1) {
++      if (x->word[j] & mask)
++	buf[index] = '1';
++      else
++	buf[index] = '0';
++      ++index;
++      if (index >= len-1)
++        break;
++    }
++  }
++  buf[index] = 0; /* null terminate string */
++
++  return buf;
++}
++
++void
++bitvector_left_shift(bitvector_t *x, int index) {
++  int i;
++  const int base_index = index >> 5;
++  const int bit_index = index & 31;
++  const int word_length = x->length >> 5;
++
++  if (index >= (int)x->length) {
++    bitvector_set_to_zero(x);
++    return;
++  } 
++  
++  if (bit_index == 0) {
++    for (i=0; i < word_length - base_index; i++)
++      x->word[i] = x->word[i+base_index];
++  } else {
++    for (i=0; i < word_length - base_index - 1; i++)
++      x->word[i] = (x->word[i+base_index] >> bit_index) ^
++	(x->word[i+base_index+1] << (32 - bit_index));
++    x->word[word_length - base_index-1] = x->word[word_length-1] >> bit_index;
++  }
++
++  /* now wrap up the final portion */
++  for (i = word_length - base_index; i < word_length; i++) 
++    x->word[i] = 0;
++
++}
++
+ 
+ int
+ octet_string_is_eq(uint8_t *a, uint8_t *b, int len) {
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-lin/crypto/math/math.c srtp/crypto/math/math.c
+--- srtp-lin/crypto/math/math.c	2006-06-08 13:00:28.000000000 -0400
++++ srtp/crypto/math/math.c	2009-04-22 19:03:15.000000000 -0400
+@@ -43,7 +43,6 @@
+  */
+ 
+ #include "crypto_math.h"
+-#include <stdlib.h>           /* malloc() used in bitvector_alloc */
+ 
+ int 
+ octet_weight[256] = {
+@@ -773,165 +772,6 @@ octet_string_set_to_zero(uint8_t *s, int
+   
+ }
+ 
+-/* functions manipulating bit_vector_t */
+-
+-#define BITVECTOR_MAX_WORDS 5
+-
+-int
+-bitvector_alloc(bitvector_t *v, unsigned long length) {
+-  unsigned long l = (length + bytes_per_word - 1) / bytes_per_word;
+-  int i;
+-
+-  /* allocate memory, then set parameters */
+-  if (l > BITVECTOR_MAX_WORDS)
+-    return -1;
+-  else
+-    l = BITVECTOR_MAX_WORDS;
+-  v->word   = malloc(l);
+-  if (v->word == NULL)
+-    return -1;
+-  v->length = length;
+-
+-  /* initialize bitvector to zero */
+-  for (i=0; i < (length >> 5); i++) {
+-    v->word = 0;
+-  }
+-
+-  return 0;
+-}
+-
+-void
+-bitvector_set_bit(bitvector_t *v, int bit_index) {
+-
+-  v->word[(bit_index >> 5)] |= (1 << (bit_index & 31));
+-  
+-}
+-
+-int
+-bitvector_get_bit(const bitvector_t *v, int bit_index) {
+-
+-  return ((v->word[(bit_index >> 5)]) >> (bit_index & 31)) & 1;
+-  
+-}
+-
+-#include <stdio.h>
+-
+-int
+-bitvector_print_hex(const bitvector_t *v, FILE *stream) {
+-  int i;
+-  int m = v->length >> 5;
+-  int n = v->length & 31;
+-  char string[9];
+-  uint32_t tmp;
+-
+-  /* if length isn't a multiple of four, we can't hex_print */
+-  if (n & 3)
+-    return -1;
+-  
+-  /* if the length is zero, do nothing */
+-  if (v->length == 0)
+-    return 0;
+-
+-  /*
+-   * loop over words from most significant to least significant - 
+-   */
+-  
+-  for (i=m; i > 0; i++) {
+-    char *str = string + 7;
+-    tmp = v->word[i];
+-    
+-    /* null terminate string */
+-    string[8] = 0;   
+-
+-    /* loop over nibbles */
+-    *str-- = nibble_to_hex_char(tmp & 0xf);  tmp >>= 4; 
+-    *str-- = nibble_to_hex_char(tmp & 0xf);  tmp >>= 4; 
+-    *str-- = nibble_to_hex_char(tmp & 0xf);  tmp >>= 4; 
+-    *str-- = nibble_to_hex_char(tmp & 0xf);  tmp >>= 4; 
+-    *str-- = nibble_to_hex_char(tmp & 0xf);  tmp >>= 4; 
+-    *str-- = nibble_to_hex_char(tmp & 0xf);  tmp >>= 4; 
+-    *str-- = nibble_to_hex_char(tmp & 0xf);  tmp >>= 4; 
+-    *str-- = nibble_to_hex_char(tmp & 0xf);   
+-
+-    /* now print stream */
+-    fprintf(stream, string);
+-  }
+-  
+-  return 0;
+-
+-}
+-
+-
+-int
+-hex_string_length(char *s) {
+-  int count = 0;
+-  
+-  /* ignore leading zeros */
+-  while ((*s != 0) && *s == '0')
+-    s++;
+-
+-  /* count remaining characters */
+-  while (*s != 0) {
+-    if (hex_char_to_nibble(*s++) == -1)
+-      return -1;
+-    count++;
+-  }
+-
+-  return count;
+-}
+-
+-int
+-bitvector_set_from_hex(bitvector_t *v, char *string) {
+-  int num_hex_chars, m, n, i, j;
+-  uint32_t tmp;
+-  
+-  num_hex_chars = hex_string_length(string);
+-  if (num_hex_chars == -1)
+-    return -1;
+-
+-  /* set length */
+-  v->length = num_hex_chars * 4;
+-  /* 
+-   * at this point, we should subtract away a bit if the high
+-   * bit of the first character is zero, but we ignore that 
+-   * for now and assume that we're four-bit aligned - DAM
+-   */
+-
+-  
+-  m = num_hex_chars / 8;   /* number of words                */
+-  n = num_hex_chars % 8;   /* number of nibbles in last word */
+-
+-  /* if the length is greater than the bitvector, return an error */
+-  if (m > BITVECTOR_MAX_WORDS)
+-    return -1;
+-
+-  /* 
+-   * loop over words from most significant - first word is a special
+-   * case 
+-   */
+-  
+-  if (n) {
+-    tmp = 0;
+-    for (i=0; i < n; i++) {
+-      tmp = hex_char_to_nibble(*string++); 
+-      tmp <<= 4;  
+-    }
+-    v->word[m] = tmp;
+-  }
+-
+-  /* now loop over the rest of the words */
+-  for (i=m-1; i >= 0; i--) {
+-     tmp = 0;
+-     for (j=0; j < 8; j++) {
+-       tmp = hex_char_to_nibble(*string++); 
+-       tmp <<= 4;  
+-     }
+-     v->word[i] = tmp;
+-  }
+-
+-  return 0;
+-}
+-
+ 
+ /* functions below not yet tested! */
+ 
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-lin/crypto/replay/rdbx.c srtp/crypto/replay/rdbx.c
+--- srtp-lin/crypto/replay/rdbx.c	2007-06-15 14:17:40.000000000 -0400
++++ srtp/crypto/replay/rdbx.c	2009-04-22 19:03:15.000000000 -0400
+@@ -45,7 +45,6 @@
+ 
+ #include "rdbx.h"
+ 
+-#define rdbx_high_bit_in_bitmask 127
+ 
+ /*
+  * from draft-ietf-avt-srtp-00.txt:
+@@ -180,17 +179,32 @@ index_guess(const xtd_seq_num_t *local,
+ 
+ 
+ /*
+- *  rdbx_init(&r) initalizes the rdbx_t pointed to by r 
++ *  rdbx_init(&r, ws) initializes the rdbx_t pointed to by r with window size ws
+  */
+ 
+ err_status_t
+-rdbx_init(rdbx_t *rdbx) {
+-  v128_set_to_zero(&rdbx->bitmask);
++rdbx_init(rdbx_t *rdbx, unsigned long ws) {
++  if (ws == 0)
++    return err_status_bad_param;
++
++  if (bitvector_alloc(&rdbx->bitmask, ws) != 0)
++    return err_status_alloc_fail;
++
+   index_init(&rdbx->index);
+ 
+   return err_status_ok;
+ }
+ 
++/*
++ *  rdbx_uninit(&r) uninitializes the rdbx_t pointed to by r
++ */
++
++err_status_t
++rdbx_uninit(rdbx_t *rdbx) {
++  bitvector_dealloc(&rdbx->bitmask);
++
++  return err_status_ok;
++}
+ 
+ /*
+  * rdbx_set_roc(rdbx, roc) initalizes the rdbx_t at the location rdbx
+@@ -202,7 +216,7 @@ rdbx_init(rdbx_t *rdbx) {
+ 
+ err_status_t
+ rdbx_set_roc(rdbx_t *rdbx, uint32_t roc) {
+-  v128_set_to_zero(&rdbx->bitmask);
++  bitvector_set_to_zero(&rdbx->bitmask);
+ 
+ #ifdef NO_64BIT_MATH
+   #error not yet implemented
+@@ -231,6 +245,17 @@ rdbx_get_packet_index(const rdbx_t *rdbx
+ }
+ 
+ /*
++ * rdbx_get_window_size(rdbx) returns the value of the window size
++ * for the rdbx_t pointed to by rdbx
++ * 
++ */
++
++unsigned long
++rdbx_get_window_size(const rdbx_t *rdbx) {
++  return bitvector_get_length(&rdbx->bitmask);
++}
++
++/*
+  * rdbx_check(&r, delta) checks to see if the xtd_seq_num_t
+  * which is at rdbx->index + delta is in the rdb
+  */
+@@ -240,11 +265,11 @@ rdbx_check(const rdbx_t *rdbx, int delta
+   
+   if (delta > 0) {       /* if delta is positive, it's good */
+     return err_status_ok;
+-  } else if (rdbx_high_bit_in_bitmask + delta < 0) {   
++  } else if ((int)(bitvector_get_length(&rdbx->bitmask) - 1) + delta < 0) {   
+                          /* if delta is lower than the bitmask, it's bad */
+     return err_status_replay_old; 
+-  } else if (v128_get_bit(&rdbx->bitmask, 
+-			  rdbx_high_bit_in_bitmask + delta) == 1) {
++  } else if (bitvector_get_bit(&rdbx->bitmask, 
++			  (int)(bitvector_get_length(&rdbx->bitmask) - 1) + delta) == 1) {
+                          /* delta is within the window, so check the bitmask */
+     return err_status_replay_fail;    
+   }
+@@ -268,11 +293,11 @@ rdbx_add_index(rdbx_t *rdbx, int delta) 
+   if (delta > 0) {
+     /* shift forward by delta */
+     index_advance(&rdbx->index, delta);
+-    v128_left_shift(&rdbx->bitmask, delta);
+-    v128_set_bit(&rdbx->bitmask, 127);
++    bitvector_left_shift(&rdbx->bitmask, delta);
++    bitvector_set_bit(&rdbx->bitmask, bitvector_get_length(&rdbx->bitmask) - 1);
+   } else {
+     /* delta is in window, so flip bit in bitmask */
+-    v128_set_bit(&rdbx->bitmask, -delta);
++    bitvector_set_bit(&rdbx->bitmask, -delta);
+   }
+ 
+   /* note that we need not consider the case that delta == 0 */
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-lin/include/srtp.h srtp/include/srtp.h
+--- srtp-lin/include/srtp.h	2007-06-15 14:17:40.000000000 -0400
++++ srtp/include/srtp.h	2009-04-22 19:06:22.000000000 -0400
+@@ -223,6 +223,8 @@ typedef struct srtp_policy_t {
+ 				*    this stream.                        */
+   ekt_policy_t ekt;            /**< Pointer to the EKT policy structure
+                                 *   for this stream (if any)             */ 
++  unsigned long  window_size;  /**< The window size to use for replay
++				*   protection. */
+   struct srtp_policy_t *next;  /**< Pointer to next stream policy.       */
+ } srtp_policy_t;
+ 
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-lin/srtp/srtp.c srtp/srtp/srtp.c
+--- srtp-lin/srtp/srtp.c	2007-06-15 14:17:40.000000000 -0400
++++ srtp/srtp/srtp.c	2009-04-22 19:18:43.000000000 -0400
+@@ -275,7 +275,10 @@ srtp_stream_clone(const srtp_stream_ctx_
+     return status;
+ 
+   /* initialize replay databases */
+-  rdbx_init(&str->rtp_rdbx);
++  status = rdbx_init(&str->rtp_rdbx,
++		     rdbx_get_window_size(&stream_template->rtp_rdbx));
++  if (status)
++    return status;
+   rdb_init(&str->rtcp_rdb);
+   
+   /* set ssrc to that provided */
+@@ -491,7 +494,8 @@ srtp_stream_init(srtp_stream_ctx_t *srtp
+ 	       p->ssrc.value);
+ 
+    /* initialize replay database */
+-   rdbx_init(&srtp->rtp_rdbx);
++   err = rdbx_init(&srtp->rtp_rdbx, p->window_size);
++   if (err) return err;
+ 
+    /* initialize key limit to maximum value */
+ #ifdef NO_64BIT_MATH
+@@ -525,14 +529,20 @@ srtp_stream_init(srtp_stream_ctx_t *srtp
+ 
+    /* initialize keys */
+    err = srtp_stream_init_keys(srtp, p->key);
+-   if (err) return err;
++   if (err) {
++     rdbx_uninit(&srtp->rtp_rdbx);
++     return err;
++   }
+ 
+    /* 
+     * if EKT is in use, then initialize the EKT data associated with
+     * the stream
+     */
+    err = ekt_stream_init_from_policy(srtp->ekt, p->ekt);
+-   if (err) return err;
++   if (err) {
++     rdbx_uninit(&srtp->rtp_rdbx);
++     return err;
++   }
+ 
+    return err_status_ok;  
+  }
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-lin/test/dtls_srtp_driver.c srtp/test/dtls_srtp_driver.c
+--- srtp-lin/test/dtls_srtp_driver.c	2009-04-23 15:50:26.000000000 -0400
++++ srtp/test/dtls_srtp_driver.c	2009-04-23 15:50:48.000000000 -0400
+@@ -184,6 +184,7 @@ test_dtls_srtp() {
+   if (err) return err;
+   policy.ssrc.type  = ssrc_any_inbound;
+   policy.ekt = NULL;
++  policy.window_size = 128;
+   policy.next = NULL;
+     
+   err = srtp_add_stream(s, &policy);
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-lin/test/rdbx_driver.c srtp/test/rdbx_driver.c
+--- srtp-lin/test/rdbx_driver.c	2006-07-17 16:41:22.000000000 -0400
++++ srtp/test/rdbx_driver.c	2009-04-22 19:22:21.000000000 -0400
+@@ -55,10 +55,10 @@
+ #include "ut_sim.h"
+ 
+ err_status_t 
+-test_replay_dbx(int num_trials);
++test_replay_dbx(int num_trials, unsigned long ws);
+ 
+ double
+-rdbx_check_adds_per_second(int num_trials);
++rdbx_check_adds_per_second(int num_trials, unsigned long ws);
+ 
+ void
+ usage(char *prog_name) {
+@@ -99,9 +99,18 @@ main (int argc, char *argv[]) {
+     usage(argv[0]);
+ 
+   if (do_validation) {
+-  printf("testing rdbx_t...\n");
++  printf("testing rdbx_t (ws=128)...\n");
+ 
+-    status = test_replay_dbx(1 << 12);
++  status = test_replay_dbx(1 << 12, 128);
++    if (status) {
++      printf("failed\n");
++      exit(1);
++    }
++    printf("passed\n");
++
++  printf("testing rdbx_t (ws=1024)...\n");
++
++  status = test_replay_dbx(1 << 12, 1024);
+     if (status) {
+       printf("failed\n");
+       exit(1);
+@@ -110,8 +119,10 @@ main (int argc, char *argv[]) {
+   }
+ 
+   if (do_timing_test) {
+-    rate = rdbx_check_adds_per_second(1 << 18);
+-    printf("rdbx_check/replay_adds per second: %e\n", rate);
++	  rate = rdbx_check_adds_per_second(1 << 18, 128);
++    printf("rdbx_check/replay_adds per second (ws=128): %e\n", rate);
++	  rate = rdbx_check_adds_per_second(1 << 18, 1024);
++    printf("rdbx_check/replay_adds per second (ws=1024): %e\n", rate);
+   }
+   
+   return 0;
+@@ -119,8 +130,11 @@ main (int argc, char *argv[]) {
+ 
+ void
+ print_rdbx(rdbx_t *rdbx) {
++  char buf[2048];
+   printf("rdbx: {%llu, %s}\n",
+-	 (unsigned long long)(rdbx->index), v128_bit_string(&rdbx->bitmask));
++	 (unsigned long long)(rdbx->index),
++	 bitvector_bit_string(&rdbx->bitmask, buf, sizeof(buf))
++);
+ }
+ 
+ 
+@@ -194,17 +208,15 @@ rdbx_check_unordered(rdbx_t *rdbx, uint3
+   return err_status_ok;
+ }
+ 
+-#define MAX_IDX 160
+-
+ err_status_t
+-test_replay_dbx(int num_trials) {
++test_replay_dbx(int num_trials, unsigned long ws) {
+   rdbx_t rdbx;
+   uint32_t idx, ircvd;
+   ut_connection utc;
+   err_status_t status;
+   int num_fp_trials;
+ 
+-  status = rdbx_init(&rdbx);
++  status = rdbx_init(&rdbx, ws);
+   if (status) {
+     printf("replay_init failed with error code %d\n", status);
+     exit(1);
+@@ -241,7 +253,9 @@ test_replay_dbx(int num_trials) {
+   printf("passed\n");
+ 
+   /* re-initialize */
+-  if (rdbx_init(&rdbx) != err_status_ok) {
++  rdbx_uninit(&rdbx);
++
++  if (rdbx_init(&rdbx, ws) != err_status_ok) {
+     printf("replay_init failed\n");
+     return err_status_init_fail;
+   }
+@@ -263,6 +277,8 @@ test_replay_dbx(int num_trials) {
+   }
+   printf("passed\n");
+ 
++  rdbx_uninit(&rdbx);
++
+   return err_status_ok;
+ }
+ 
+@@ -272,7 +288,7 @@ test_replay_dbx(int num_trials) {
+ #include <stdlib.h>     /* for random() */
+ 
+ double
+-rdbx_check_adds_per_second(int num_trials) {
++rdbx_check_adds_per_second(int num_trials, unsigned long ws) {
+   uint32_t i;
+   int delta;
+   rdbx_t rdbx;
+@@ -280,7 +296,7 @@ rdbx_check_adds_per_second(int num_trial
+   clock_t timer;
+   int failures;                    /* count number of failures        */
+   
+-  if (rdbx_init(&rdbx) != err_status_ok) {
++  if (rdbx_init(&rdbx, ws) != err_status_ok) {
+     printf("replay_init failed\n");
+     exit(1);
+   }  
+@@ -301,6 +317,8 @@ rdbx_check_adds_per_second(int num_trial
+ 
+   printf("number of failures: %d \n", failures);
+ 
++  rdbx_uninit(&rdbx);
++
+   return (double) CLOCKS_PER_SEC * num_trials / timer;
+ }
+ 
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-lin/test/rtpw.c srtp/test/rtpw.c
+--- srtp-lin/test/rtpw.c	2006-07-17 16:41:22.000000000 -0400
++++ srtp/test/rtpw.c	2009-04-22 19:16:52.000000000 -0400
+@@ -330,6 +330,7 @@ main (int argc, char *argv[]) {
+     policy.ssrc.value = ssrc;
+     policy.key  = (uint8_t *) key;
+     policy.next = NULL;
++    policy.window_size = 128;
+     policy.rtp.sec_serv = sec_servs;
+     policy.rtcp.sec_serv = sec_serv_none;  /* we don't do RTCP anyway */
+ 
+@@ -382,6 +383,7 @@ main (int argc, char *argv[]) {
+     policy.rtcp.auth_key_len   = 0;
+     policy.rtcp.auth_tag_len   = 0;
+     policy.rtcp.sec_serv       = sec_serv_none;   
++    policy.window_size         = 0;
+     policy.next                = NULL;
+   }
+ 
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-lin/test/srtp_driver.c srtp/test/srtp_driver.c
+--- srtp-lin/test/srtp_driver.c	2009-04-22 18:20:27.000000000 -0400
++++ srtp/test/srtp_driver.c	2009-04-22 19:16:52.000000000 -0400
+@@ -321,6 +321,8 @@ main (int argc, char *argv[]) {
+     policy.ssrc.type  = ssrc_specific;
+     policy.ssrc.value = 0xdecafbad;
+     policy.key  = test_key;
++    policy.ekt = NULL;
++    policy.window_size = 128;
+     policy.next = NULL;
+ 
+     printf("mips estimate: %e\n", mips);
+@@ -989,14 +991,16 @@ srtp_session_print_policy(srtp_t srtp) {
+ 	   "# rtp services:  %s\r\n" 
+            "# rtcp cipher:   %s\r\n"
+ 	   "# rtcp auth:     %s\r\n"
+-	   "# rtcp services: %s\r\n",
++	   "# rtcp services: %s\r\n"
++	   "# window size:   %lu\r\n",
+ 	   direction[stream->direction],
+ 	   stream->rtp_cipher->type->description,
+ 	   stream->rtp_auth->type->description,
+ 	   serv_descr[stream->rtp_services],
+ 	   stream->rtcp_cipher->type->description,
+ 	   stream->rtcp_auth->type->description,
+-	   serv_descr[stream->rtcp_services]);
++	   serv_descr[stream->rtcp_services],
++	   rdbx_get_window_size(&stream->rtp_rdbx));
+   }
+ 
+   /* loop over streams in session, printing the policy of each */
+@@ -1011,14 +1015,16 @@ srtp_session_print_policy(srtp_t srtp) {
+ 	   "# rtp services:  %s\r\n" 
+            "# rtcp cipher:   %s\r\n"
+ 	   "# rtcp auth:     %s\r\n"
+-	   "# rtcp services: %s\r\n",
++	   "# rtcp services: %s\r\n"
++	   "# window size:   %lu\r\n",
+ 	   stream->ssrc,
+ 	   stream->rtp_cipher->type->description,
+ 	   stream->rtp_auth->type->description,
+ 	   serv_descr[stream->rtp_services],
+ 	   stream->rtcp_cipher->type->description,
+ 	   stream->rtcp_auth->type->description,
+-	   serv_descr[stream->rtcp_services]);
++	   serv_descr[stream->rtcp_services],
++	   rdbx_get_window_size(&stream->rtp_rdbx));
+ 
+     /* advance to next stream in the list */
+     stream = stream->next;
+@@ -1172,6 +1178,8 @@ srtp_validate() {
+   policy.ssrc.type  = ssrc_specific;
+   policy.ssrc.value = 0xcafebabe;
+   policy.key  = test_key;
++  policy.ekt = NULL;
++  policy.window_size = 128;
+   policy.next = NULL;
+ 
+   status = srtp_create(&srtp_snd, &policy);
+@@ -1328,6 +1336,7 @@ const srtp_policy_t default_policy = {
+   },
+   test_key,
+   NULL,        /* indicates that EKT is not in use */
++  128,         /* replay window size */
+   NULL
+ };
+ 
+@@ -1351,6 +1360,7 @@ const srtp_policy_t aes_tmmh_policy = {
+   },
+   test_key,
+   NULL,        /* indicates that EKT is not in use */
++  128,         /* replay window size */
+   NULL
+ };
+ 
+@@ -1374,6 +1384,7 @@ const srtp_policy_t tmmh_only_policy = {
+   },
+   test_key,
+   NULL,        /* indicates that EKT is not in use */
++  128,         /* replay window size */
+   NULL
+ };
+ 
+@@ -1397,6 +1408,7 @@ const srtp_policy_t aes_only_policy = {
+   },
+   test_key,
+   NULL,        /* indicates that EKT is not in use */
++  128,         /* replay window size */
+   NULL
+ };
+ 
+@@ -1420,6 +1432,7 @@ const srtp_policy_t hmac_only_policy = {
+   },
+   test_key,
+   NULL,        /* indicates that EKT is not in use */
++  128,         /* replay window size */
+   NULL
+ };
+ 
+@@ -1443,6 +1456,7 @@ const srtp_policy_t null_policy = {
+   },
+   test_key,
+   NULL,        /* indicates that EKT is not in use */
++  128,         /* replay window size */
+   NULL
+ };
+ 
+@@ -1480,6 +1494,7 @@ const srtp_policy_t hmac_only_with_ekt_p
+   },
+   test_key,
+   &ekt_test_policy,        /* indicates that EKT is not in use */
++  128,         /* replay window size */
+   NULL
+ };
+ 
+@@ -1531,5 +1546,7 @@ const srtp_policy_t wildcard_policy = {
+     sec_serv_conf_and_auth  /* security services flag      */
+   },
+   test_key,
++  NULL,
++  128,         /* replay window size */
+   NULL
+ };
diff --git a/googlepatches/vidyo-4-srtp-rtx.patch b/googlepatches/vidyo-4-srtp-rtx.patch
new file mode 100644
index 0000000..18af19c
--- /dev/null
+++ b/googlepatches/vidyo-4-srtp-rtx.patch
@@ -0,0 +1,216 @@
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-ws/include/srtp.h srtp/include/srtp.h
+--- srtp-ws/include/srtp.h	2009-04-22 19:06:22.000000000 -0400
++++ srtp/include/srtp.h	2009-04-23 15:17:49.000000000 -0400
+@@ -225,6 +225,12 @@ typedef struct srtp_policy_t {
+                                 *   for this stream (if any)             */ 
+   unsigned long  window_size;  /**< The window size to use for replay
+ 				*   protection. */
++  int        allow_repeat_tx;  /**< Whether retransmissions of
++				*   packets with the same sequence number
++				*   are allowed.  (Note that such repeated
++				*   transmissions must have the same RTP
++				*   payload, or a severe security weakness
++				*   is introduced!)                      */
+   struct srtp_policy_t *next;  /**< Pointer to next stream policy.       */
+ } srtp_policy_t;
+ 
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-ws/include/srtp_priv.h srtp/include/srtp_priv.h
+--- srtp-ws/include/srtp_priv.h	2007-06-15 14:17:40.000000000 -0400
++++ srtp/include/srtp_priv.h	2009-04-22 19:27:10.000000000 -0400
+@@ -218,6 +218,7 @@ typedef struct srtp_stream_ctx_t {
+   sec_serv_t rtcp_services;
+   key_limit_ctx_t *limit;
+   direction_t direction;
++  int        allow_repeat_tx;
+   ekt_stream_t ekt; 
+   struct srtp_stream_ctx_t *next;   /* linked list of streams */
+ } srtp_stream_ctx_t;
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-ws/srtp/srtp.c srtp/srtp/srtp.c
+--- srtp-ws/srtp/srtp.c	2009-04-22 19:18:43.000000000 -0400
++++ srtp/srtp/srtp.c	2009-04-22 19:30:23.000000000 -0400
+@@ -280,6 +280,7 @@ srtp_stream_clone(const srtp_stream_ctx_
+   if (status)
+     return status;
+   rdb_init(&str->rtcp_rdb);
++  str->allow_repeat_tx = stream_template->allow_repeat_tx;
+   
+   /* set ssrc to that provided */
+   str->ssrc = ssrc;
+@@ -525,6 +526,9 @@ srtp_stream_init(srtp_stream_ctx_t *srtp
+    /* initialize SRTCP replay database */
+    rdb_init(&srtp->rtcp_rdb);
+ 
++   /* initialize allow_repeat_tx */
++   srtp->allow_repeat_tx = p->allow_repeat_tx;
++
+    /* DAM - no RTCP key limit at present */
+ 
+    /* initialize keys */
+@@ -732,9 +736,12 @@ srtp_stream_init(srtp_stream_ctx_t *srtp
+     */
+    delta = rdbx_estimate_index(&stream->rtp_rdbx, &est, ntohs(hdr->seq));
+    status = rdbx_check(&stream->rtp_rdbx, delta);
+-   if (status)
+-     return status;  /* we've been asked to reuse an index */
+-   rdbx_add_index(&stream->rtp_rdbx, delta);
++   if (status) {
++     if (status != err_status_replay_fail || !stream->allow_repeat_tx)
++       return status;  /* we've been asked to reuse an index */
++   }
++   else
++     rdbx_add_index(&stream->rtp_rdbx, delta);
+ 
+ #ifdef NO_64BIT_MATH
+    debug_print2(mod_srtp, "estimated packet index: %08x%08x", 
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-ws/test/dtls_srtp_driver.c srtp/test/dtls_srtp_driver.c
+--- srtp-ws/test/dtls_srtp_driver.c	2009-04-23 15:50:48.000000000 -0400
++++ srtp/test/dtls_srtp_driver.c	2009-04-23 15:51:11.000000000 -0400
+@@ -185,6 +185,7 @@ test_dtls_srtp() {
+   policy.ssrc.type  = ssrc_any_inbound;
+   policy.ekt = NULL;
+   policy.window_size = 128;
++  policy.allow_repeat_tx = 0;
+   policy.next = NULL;
+     
+   err = srtp_add_stream(s, &policy);
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-ws/test/rtpw.c srtp/test/rtpw.c
+--- srtp-ws/test/rtpw.c	2009-04-22 19:16:52.000000000 -0400
++++ srtp/test/rtpw.c	2009-04-23 15:16:18.000000000 -0400
+@@ -331,6 +331,7 @@ main (int argc, char *argv[]) {
+     policy.key  = (uint8_t *) key;
+     policy.next = NULL;
+     policy.window_size = 128;
++    policy.allow_repeat_tx = 0;
+     policy.rtp.sec_serv = sec_servs;
+     policy.rtcp.sec_serv = sec_serv_none;  /* we don't do RTCP anyway */
+ 
+@@ -384,6 +385,7 @@ main (int argc, char *argv[]) {
+     policy.rtcp.auth_tag_len   = 0;
+     policy.rtcp.sec_serv       = sec_serv_none;   
+     policy.window_size         = 0;
++    policy.allow_repeat_tx     = 0;
+     policy.next                = NULL;
+   }
+ 
+diff -purN -x CVS -x '*~' -x '.*' -x 'obj-*' srtp-ws/test/srtp_driver.c srtp/test/srtp_driver.c
+--- srtp-ws/test/srtp_driver.c	2009-04-22 19:16:52.000000000 -0400
++++ srtp/test/srtp_driver.c	2009-04-23 15:16:18.000000000 -0400
+@@ -323,6 +323,7 @@ main (int argc, char *argv[]) {
+     policy.key  = test_key;
+     policy.ekt = NULL;
+     policy.window_size = 128;
++    policy.allow_repeat_tx = 0;
+     policy.next = NULL;
+ 
+     printf("mips estimate: %e\n", mips);
+@@ -992,7 +993,8 @@ srtp_session_print_policy(srtp_t srtp) {
+            "# rtcp cipher:   %s\r\n"
+ 	   "# rtcp auth:     %s\r\n"
+ 	   "# rtcp services: %s\r\n"
+-	   "# window size:   %lu\r\n",
++	   "# window size:   %lu\r\n"
++	   "# tx rtx allowed:%s\r\n",
+ 	   direction[stream->direction],
+ 	   stream->rtp_cipher->type->description,
+ 	   stream->rtp_auth->type->description,
+@@ -1000,7 +1002,8 @@ srtp_session_print_policy(srtp_t srtp) {
+ 	   stream->rtcp_cipher->type->description,
+ 	   stream->rtcp_auth->type->description,
+ 	   serv_descr[stream->rtcp_services],
+-	   rdbx_get_window_size(&stream->rtp_rdbx));
++	   rdbx_get_window_size(&stream->rtp_rdbx),
++	   stream->allow_repeat_tx ? "true" : "false");
+   }
+ 
+   /* loop over streams in session, printing the policy of each */
+@@ -1016,7 +1019,8 @@ srtp_session_print_policy(srtp_t srtp) {
+            "# rtcp cipher:   %s\r\n"
+ 	   "# rtcp auth:     %s\r\n"
+ 	   "# rtcp services: %s\r\n"
+-	   "# window size:   %lu\r\n",
++	   "# window size:   %lu\r\n"
++	   "# tx rtx allowed:%s\r\n",
+ 	   stream->ssrc,
+ 	   stream->rtp_cipher->type->description,
+ 	   stream->rtp_auth->type->description,
+@@ -1024,7 +1028,8 @@ srtp_session_print_policy(srtp_t srtp) {
+ 	   stream->rtcp_cipher->type->description,
+ 	   stream->rtcp_auth->type->description,
+ 	   serv_descr[stream->rtcp_services],
+-	   rdbx_get_window_size(&stream->rtp_rdbx));
++	   rdbx_get_window_size(&stream->rtp_rdbx),
++	   stream->allow_repeat_tx ? "true" : "false");
+ 
+     /* advance to next stream in the list */
+     stream = stream->next;
+@@ -1180,6 +1185,7 @@ srtp_validate() {
+   policy.key  = test_key;
+   policy.ekt = NULL;
+   policy.window_size = 128;
++  policy.allow_repeat_tx = 0;
+   policy.next = NULL;
+ 
+   status = srtp_create(&srtp_snd, &policy);
+@@ -1337,6 +1343,7 @@ const srtp_policy_t default_policy = {
+   test_key,
+   NULL,        /* indicates that EKT is not in use */
+   128,         /* replay window size */
++  0,           /* retransmission not allowed */
+   NULL
+ };
+ 
+@@ -1361,6 +1368,7 @@ const srtp_policy_t aes_tmmh_policy = {
+   test_key,
+   NULL,        /* indicates that EKT is not in use */
+   128,         /* replay window size */
++  0,           /* retransmission not allowed */
+   NULL
+ };
+ 
+@@ -1385,6 +1393,7 @@ const srtp_policy_t tmmh_only_policy = {
+   test_key,
+   NULL,        /* indicates that EKT is not in use */
+   128,         /* replay window size */
++  0,           /* retransmission not allowed */
+   NULL
+ };
+ 
+@@ -1409,6 +1418,7 @@ const srtp_policy_t aes_only_policy = {
+   test_key,
+   NULL,        /* indicates that EKT is not in use */
+   128,         /* replay window size */
++  0,           /* retransmission not allowed */
+   NULL
+ };
+ 
+@@ -1433,6 +1443,7 @@ const srtp_policy_t hmac_only_policy = {
+   test_key,
+   NULL,        /* indicates that EKT is not in use */
+   128,         /* replay window size */
++  0,           /* retransmission not allowed */
+   NULL
+ };
+ 
+@@ -1457,6 +1468,7 @@ const srtp_policy_t null_policy = {
+   test_key,
+   NULL,        /* indicates that EKT is not in use */
+   128,         /* replay window size */
++  0,           /* retransmission not allowed */
+   NULL
+ };
+ 
+@@ -1495,6 +1507,7 @@ const srtp_policy_t hmac_only_with_ekt_p
+   test_key,
+   &ekt_test_policy,        /* indicates that EKT is not in use */
+   128,         /* replay window size */
++  0,           /* retransmission not allowed */
+   NULL
+ };
+ 
+@@ -1548,5 +1561,6 @@ const srtp_policy_t wildcard_policy = {
+   test_key,
+   NULL,
+   128,         /* replay window size */
++  0,           /* retransmission not allowed */
+   NULL
+ };
diff --git a/include/ekt.h b/include/ekt.h
new file mode 100644
index 0000000..c43f409
--- /dev/null
+++ b/include/ekt.h
@@ -0,0 +1,201 @@
+/*
+ * ekt.h
+ *
+ * interface to Encrypted Key Transport for SRTP
+ *
+ * David McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2005 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+
+/*
+ * EKT implementation strategy 
+ * 
+ * use stream_template approach
+ *
+ * in srtp_unprotect, when a new stream appears, check if template has
+ * EKT defined, and if it does, then apply EKT processing 
+ *
+ * question: will we want to allow key-sharing templates in addition
+ * to EKT templates?  could define a new ssrc_type_t that's associated
+ * with an EKT, e.g.  ssrc_any_ekt.
+ *
+ *
+ */
+
+#ifndef EKT_H
+#define EKT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "srtp_priv.h"
+
+#define EKT_CIPHER_DEFAULT           1
+#define EKT_CIPHER_AES_128_ECB       1
+#define EKT_CIPHER_AES_192_KEY_WRAP  2
+#define EKT_CIPHER_AES_256_KEY_WRAP  3
+
+typedef uint16_t ekt_spi_t;
+
+
+unsigned
+ekt_octets_after_base_tag(ekt_stream_t ekt);
+
+/*
+ * an srtp_policy_t structure can contain a pointer to an
+ * ekt_policy_t structure
+ *
+ * this structure holds all of the high level EKT information, and it
+ * is passed into libsrtp to indicate what policy should be in effect
+ */
+
+typedef struct ekt_policy_ctx_t {
+  ekt_spi_t  spi;     /* security parameter index */
+  uint8_t    ekt_cipher_type;
+  uint8_t   *ekt_key;
+  struct ekt_policy_ctx_t *next_ekt_policy;
+} ekt_policy_ctx_t;
+
+
+/*
+ * an ekt_data_t structure holds the data corresponding to an ekt key,
+ * spi, and so on
+ */
+
+typedef struct ekt_data_t {
+  ekt_spi_t spi;
+  uint8_t ekt_cipher_type;
+  aes_expanded_key_t ekt_enc_key;
+  aes_expanded_key_t ekt_dec_key;
+  struct ekt_data_t *next_ekt_data;
+} ekt_data_t;
+
+/*
+ * an srtp_stream_ctx_t can contain an ekt_stream_ctx_t
+ *
+ * an ekt_stream_ctx_t structure holds all of the EKT information for
+ * a specific SRTP stream
+ */
+
+typedef struct ekt_stream_ctx_t {
+  ekt_data_t *data;    
+  uint16_t    isn;     /* initial sequence number  */
+  uint8_t     encrypted_master_key[SRTP_MAX_KEY_LEN];
+} ekt_stream_ctx_t;
+
+
+
+err_status_t 
+ekt_alloc(ekt_stream_t *stream_data, ekt_policy_t policy);
+
+err_status_t
+ekt_stream_init(ekt_stream_t e, 
+		ekt_spi_t spi,
+		void *ekt_key,
+		unsigned ekt_cipher_type);
+
+err_status_t
+ekt_stream_init_from_policy(ekt_stream_t e, ekt_policy_t p);
+  
+
+
+err_status_t
+srtp_stream_init_from_ekt(srtp_stream_t stream,			  
+			  const void *srtcp_hdr,
+			  unsigned pkt_octet_len);
+		
+
+void
+ekt_write_data(ekt_stream_t ekt,
+	       void *base_tag, 
+	       unsigned base_tag_len, 
+	       int *packet_len,
+	       xtd_seq_num_t pkt_index);		
+
+/*
+ * We handle EKT by performing some additional steps before
+ * authentication (copying the auth tag into a temporary location,
+ * zeroizing the "base tag" field in the packet)
+ *
+ * With EKT, the tag_len parameter is actually the base tag
+ * length
+ */
+
+err_status_t
+ekt_tag_verification_preproces(uint8_t *pkt_tag, 
+			       uint8_t *pkt_tag_copy, 
+			       unsigned tag_len);
+
+err_status_t
+ekt_tag_verification_postproces(uint8_t *pkt_tag,
+				uint8_t *pkt_tag_copy,
+				unsigned tag_len);
+
+
+/*
+ * @brief EKT pre-processing for srtcp tag generation
+ *
+ * This function does the pre-processing of the SRTCP authentication
+ * tag format.  When EKT is used, it consists of writing the Encrypted
+ * Master Key, the SRTP ROC, the Initial Sequence Number, and SPI
+ * fields.  The Base Authentication Tag field is set to the all-zero
+ * value
+ * 
+ * When EKT is not used, this function is a no-op.
+ * 
+ */
+
+err_status_t
+srtp_stream_srtcp_auth_tag_generation_preprocess(const srtp_stream_t *s,
+						 uint8_t *pkt_tag,
+						 unsigned pkt_octet_len);
+
+/* it's not clear that a tag_generation_postprocess function is needed */
+
+err_status_t
+srtcp_auth_tag_generation_postprocess();
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* EKT_H */
diff --git a/include/getopt_s.h b/include/getopt_s.h
new file mode 100644
index 0000000..2a6ece3
--- /dev/null
+++ b/include/getopt_s.h
@@ -0,0 +1,60 @@
+/*
+ * getopt.h
+ *
+ * interface to a minimal implementation of the getopt() function,
+ * written so that test applications that use that function can run on
+ * non-POSIX platforms
+ *
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GETOPT_S_H
+#define GETOPT_S_H
+
+/* 
+ * getopt_s(), optarg_s, and optind_s are small, locally defined
+ * versions of the POSIX standard getopt() interface.
+ */
+ 
+int
+getopt_s(int argc, char * const argv[], const char *optstring);
+
+extern char *optarg_s;    /* defined in getopt.c */
+
+extern int optind_s;      /* defined in getopt.c */
+
+#endif /* GETOPT_S_H */
diff --git a/include/rtp.h b/include/rtp.h
new file mode 100644
index 0000000..94279f5
--- /dev/null
+++ b/include/rtp.h
@@ -0,0 +1,127 @@
+/*
+ * rtp.h
+ * 
+ * rtp interface for srtp reference implementation
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ *
+ * data types:
+ *
+ * rtp_msg_t       an rtp message (the data that goes on the wire)
+ * rtp_sender_t    sender side socket and rtp info
+ * rtp_receiver_t  receiver side socket and rtp info
+ *
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef RTP_H
+#define RTP_H
+
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#elif defined HAVE_WINSOCK2_H
+# include <winsock2.h>
+#endif
+
+#include "srtp.h"
+
+typedef struct rtp_sender_ctx_t *rtp_sender_t;
+
+typedef struct rtp_receiver_ctx_t *rtp_receiver_t;
+
+unsigned int
+rtp_sendto(rtp_sender_t sender, const void* msg, int len);
+
+unsigned int
+rtp_recvfrom(rtp_receiver_t receiver, void *msg, int *len);
+
+int
+rtp_receiver_init(rtp_receiver_t rcvr, int socket, 
+		  struct sockaddr_in addr, unsigned int ssrc);
+
+int
+rtp_sender_init(rtp_sender_t sender, int socket, 
+		struct sockaddr_in addr, unsigned int ssrc);
+
+/*
+ * srtp_sender_init(...) initializes an rtp_sender_t
+ */
+
+int
+srtp_sender_init(rtp_sender_t rtp_ctx,          /* structure to be init'ed */
+		 struct sockaddr_in name,       /* socket name             */
+		 sec_serv_t security_services,  /* sec. servs. to be used  */
+		 unsigned char *input_key       /* master key/salt in hex  */
+		 );
+
+int
+srtp_receiver_init(rtp_receiver_t rtp_ctx,       /* structure to be init'ed */
+		   struct sockaddr_in name, 	 /* socket name             */
+		   sec_serv_t security_services, /* sec. servs. to be used  */
+		   unsigned char *input_key	 /* master key/salt in hex  */
+		   );
+
+
+int
+rtp_sender_init_srtp(rtp_sender_t sender, const srtp_policy_t *policy);
+
+int
+rtp_receiver_init_srtp(rtp_receiver_t sender, const srtp_policy_t *policy);
+
+
+rtp_sender_t 
+rtp_sender_alloc();
+
+rtp_receiver_t 
+rtp_receiver_alloc();
+
+
+/*
+ * RTP_HEADER_LEN indicates the size of an RTP header
+ */
+#define RTP_HEADER_LEN   12
+
+/* 
+ * RTP_MAX_BUF_LEN defines the largest RTP packet in the rtp.c implementation
+ */
+#define RTP_MAX_BUF_LEN  16384
+
+
+#endif /* RTP_H */
diff --git a/include/rtp_priv.h b/include/rtp_priv.h
new file mode 100644
index 0000000..1421386
--- /dev/null
+++ b/include/rtp_priv.h
@@ -0,0 +1,74 @@
+/*
+ * rtp_priv.h
+ *
+ * private, internal header file for RTP
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef RTP_PRIV_H
+#define RTP_PRIV_H
+
+#include "srtp_priv.h"
+#include "rtp.h"
+
+typedef srtp_hdr_t rtp_hdr_t;
+
+typedef struct {
+  srtp_hdr_t header;        
+  char body[RTP_MAX_BUF_LEN];  
+} rtp_msg_t;
+
+typedef struct rtp_sender_ctx_t {
+  rtp_msg_t message;         
+  int socket;
+  srtp_ctx_t *srtp_ctx;
+  struct sockaddr_in addr;   /* reciever's address */
+} rtp_sender_ctx_t;
+
+typedef struct rtp_receiver_ctx_t {
+  rtp_msg_t message;
+  int socket;
+  srtp_ctx_t *srtp_ctx;
+  struct sockaddr_in addr;   /* receiver's address */
+} rtp_receiver_ctx_t;
+
+
+#endif /* RTP_PRIV_H */
diff --git a/include/srtp.h b/include/srtp.h
new file mode 100644
index 0000000..bbaac95
--- /dev/null
+++ b/include/srtp.h
@@ -0,0 +1,933 @@
+/*
+ * srtp.h
+ *
+ * interface to libsrtp
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef SRTP_H
+#define SRTP_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "crypto_kernel.h" 
+
+/**
+ * @defgroup SRTP Secure RTP
+ *
+ * @brief libSRTP provides functions for protecting RTP and RTCP.  See
+ * Section @ref Overview for an introduction to the use of the library.
+ *
+ * @{
+ */
+
+/*
+ * SRTP_MASTER_KEY_LEN is the nominal master key length supported by libSRTP
+ */
+
+#define SRTP_MASTER_KEY_LEN 30
+
+/*
+ * SRTP_MAX_KEY_LEN is the maximum key length supported by libSRTP
+ */
+#define SRTP_MAX_KEY_LEN      64
+
+/*
+ * SRTP_MAX_TAG_LEN is the maximum tag length supported by libSRTP
+ */
+
+#define SRTP_MAX_TAG_LEN 12 
+
+/**
+ * SRTP_MAX_TRAILER_LEN is the maximum length of the SRTP trailer
+ * (authentication tag and MKI) supported by libSRTP.  This value is
+ * the maximum number of octets that will be added to an RTP packet by
+ * srtp_protect().
+ *
+ * @brief the maximum number of octets added by srtp_protect().
+ */
+#define SRTP_MAX_TRAILER_LEN SRTP_MAX_TAG_LEN 
+
+/* 
+ * nota bene: since libSRTP doesn't support the use of the MKI, the
+ * SRTP_MAX_TRAILER_LEN value is just the maximum tag length
+ */
+
+/**
+ * @brief sec_serv_t describes a set of security services. 
+ *
+ * A sec_serv_t enumeration is used to describe the particular
+ * security services that will be applied by a particular crypto
+ * policy (or other mechanism).  
+ */
+
+typedef enum {
+  sec_serv_none          = 0, /**< no services                        */
+  sec_serv_conf          = 1, /**< confidentiality                    */
+  sec_serv_auth          = 2, /**< authentication                     */
+  sec_serv_conf_and_auth = 3  /**< confidentiality and authentication */
+} sec_serv_t;
+
+/** 
+ * @brief crypto_policy_t describes a particular crypto policy that
+ * can be applied to an SRTP stream.
+ *
+ * A crypto_policy_t describes a particular cryptographic policy that
+ * can be applied to an SRTP or SRTCP stream.  An SRTP session policy
+ * consists of a list of these policies, one for each SRTP stream 
+ * in the session.
+ */
+
+typedef struct crypto_policy_t {
+  cipher_type_id_t cipher_type;    /**< An integer representing
+				    *   the type of cipher.  */
+  int              cipher_key_len; /**< The length of the cipher key
+				    *   in octets.                       */
+  auth_type_id_t   auth_type;      /**< An integer representing the
+				    *   authentication function.         */
+  int              auth_key_len;   /**< The length of the authentication 
+				    *   function key in octets.          */
+  int              auth_tag_len;   /**< The length of the authentication 
+				    *   tag in octets.                   */
+  sec_serv_t       sec_serv;       /**< The flag indicating the security
+				    *   services to be applied.          */
+} crypto_policy_t;
+
+
+/** 
+ * @brief ssrc_type_t describes the type of an SSRC.
+ * 
+ * An ssrc_type_t enumeration is used to indicate a type of SSRC.  See
+ * @ref srtp_policy_t for more informataion.
+ */
+
+typedef enum { 
+  ssrc_undefined    = 0,  /**< Indicates an undefined SSRC type. */
+  ssrc_specific     = 1,  /**< Indicates a specific SSRC value   */
+  ssrc_any_inbound  = 2, /**< Indicates any inbound SSRC value 
+			    (i.e. a value that is used in the
+			    function srtp_unprotect())              */
+  ssrc_any_outbound = 3  /**< Indicates any outbound SSRC value 
+			    (i.e. a value that is used in the 
+			    function srtp_protect())		  */
+} ssrc_type_t;
+
+/**
+ * @brief An ssrc_t represents a particular SSRC value, or a `wildcard' SSRC.
+ * 
+ * An ssrc_t represents a particular SSRC value (if its type is
+ * ssrc_specific), or a wildcard SSRC value that will match all
+ * outbound SSRCs (if its type is ssrc_any_outbound) or all inbound
+ * SSRCs (if its type is ssrc_any_inbound).  
+ *
+ */
+
+typedef struct { 
+  ssrc_type_t type;   /**< The type of this particular SSRC */
+  unsigned int value; /**< The value of this SSRC, if it is not a wildcard */
+} ssrc_t;
+
+
+/**
+ * @brief points to an EKT policy
+ */
+typedef struct ekt_policy_ctx_t *ekt_policy_t;
+
+
+/**
+ * @brief points to EKT stream data
+ */
+typedef struct ekt_stream_ctx_t *ekt_stream_t;
+
+
+/** 
+ * @brief represents the policy for an SRTP session.  
+ *
+ * A single srtp_policy_t struct represents the policy for a single
+ * SRTP stream, and a linked list of these elements represents the
+ * policy for an entire SRTP session.  Each element contains the SRTP
+ * and SRTCP crypto policies for that stream, a pointer to the SRTP
+ * master key for that stream, the SSRC describing that stream, or a
+ * flag indicating a `wildcard' SSRC value, and a `next' field that
+ * holds a pointer to the next element in the list of policy elements,
+ * or NULL if it is the last element. 
+ *
+ * The wildcard value SSRC_ANY_INBOUND matches any SSRC from an
+ * inbound stream that for which there is no explicit SSRC entry in
+ * another policy element.  Similarly, the value SSRC_ANY_OUTBOUND
+ * will matches any SSRC from an outbound stream that does not appear
+ * in another policy element.  Note that wildcard SSRCs &b cannot be
+ * used to match both inbound and outbound traffic.  This restriction
+ * is intentional, and it allows libSRTP to ensure that no security
+ * lapses result from accidental re-use of SSRC values during key
+ * sharing.
+ * 
+ * 
+ * @warning The final element of the list @b must have its `next' pointer
+ *          set to NULL.
+ */
+
+typedef struct srtp_policy_t {
+  ssrc_t        ssrc;        /**< The SSRC value of stream, or the 
+			      *   flags SSRC_ANY_INBOUND or 
+			      *   SSRC_ANY_OUTBOUND if key sharing
+			      *   is used for this policy element.
+			      */
+  crypto_policy_t rtp;         /**< SRTP crypto policy.                  */
+  crypto_policy_t rtcp;        /**< SRTCP crypto policy.                 */
+  unsigned char *key;          /**< Pointer to the SRTP master key for
+				*    this stream.                        */
+  ekt_policy_t ekt;            /**< Pointer to the EKT policy structure
+                                *   for this stream (if any)             */ 
+  unsigned long  window_size;  /**< The window size to use for replay
+				*   protection. */
+  int        allow_repeat_tx;  /**< Whether retransmissions of
+				*   packets with the same sequence number
+				*   are allowed.  (Note that such repeated
+				*   transmissions must have the same RTP
+				*   payload, or a severe security weakness
+				*   is introduced!)                      */
+  struct srtp_policy_t *next;  /**< Pointer to next stream policy.       */
+} srtp_policy_t;
+
+
+
+
+/**
+ * @brief An srtp_t points to an SRTP session structure.
+ *
+ * The typedef srtp_t is a pointer to a structure that represents
+ * an SRTP session.  This datatype is intentially opaque in 
+ * order to separate the interface from the implementation.
+ *
+ * An SRTP session consists of all of the traffic sent to the RTP and
+ * RTCP destination transport addresses, using the RTP/SAVP (Secure
+ * Audio/Video Profile).  A session can be viewed as a set of SRTP
+ * streams, each of which originates with a different participant.
+ */
+
+typedef struct srtp_ctx_t *srtp_t;
+
+
+/**
+ * @brief An srtp_stream_t points to an SRTP stream structure.
+ *
+ * The typedef srtp_stream_t is a pointer to a structure that
+ * represents an SRTP stream.  This datatype is intentionally
+ * opaque in order to separate the interface from the implementation. 
+ * 
+ * An SRTP stream consists of all of the traffic sent to an SRTP
+ * session by a single participant.  A session can be viewed as
+ * a set of streams.  
+ *
+ */
+typedef struct srtp_stream_ctx_t *srtp_stream_t;
+
+
+
+/**
+ * @brief srtp_init() initializes the srtp library.  
+ *
+ * @warning This function @b must be called before any other srtp
+ * functions.
+ */
+
+err_status_t
+srtp_init(void);
+
+/**
+ * @brief srtp_protect() is the Secure RTP sender-side packet processing
+ * function.
+ * 
+ * The function call srtp_protect(ctx, rtp_hdr, len_ptr) applies SRTP
+ * protection to the RTP packet rtp_hdr (which has length *len_ptr) using
+ * the SRTP context ctx.  If err_status_ok is returned, then rtp_hdr
+ * points to the resulting SRTP packet and *len_ptr is the number of
+ * octets in that packet; otherwise, no assumptions should be made
+ * about the value of either data elements.
+ * 
+ * The sequence numbers of the RTP packets presented to this function
+ * need not be consecutive, but they @b must be out of order by less
+ * than 2^15 = 32,768 packets.
+ *
+ * @warning This function assumes that it can write the authentication
+ * tag into the location in memory immediately following the RTP
+ * packet, and assumes that the RTP packet is aligned on a 32-bit
+ * boundary.
+ *
+ * @param ctx is the SRTP context to use in processing the packet.
+ *
+ * @param rtp_hdr is a pointer to the RTP packet (before the call); after
+ * the function returns, it points to the srtp packet.
+ *
+ * @param len_ptr is a pointer to the length in octets of the complete
+ * RTP packet (header and body) before the function call, and of the
+ * complete SRTP packet after the call, if err_status_ok was returned.
+ * Otherwise, the value of the data to which it points is undefined.
+ *
+ * @return 
+ *    - err_status_ok            no problems
+ *    - err_status_replay_fail   rtp sequence number was non-increasing
+ *    - @e other                 failure in cryptographic mechanisms
+ */
+
+err_status_t
+srtp_protect(srtp_t ctx, void *rtp_hdr, int *len_ptr);
+	     
+/**
+ * @brief srtp_unprotect() is the Secure RTP receiver-side packet
+ * processing function.
+ *
+ * The function call srtp_unprotect(ctx, srtp_hdr, len_ptr) verifies
+ * the Secure RTP protection of the SRTP packet pointed to by srtp_hdr
+ * (which has length *len_ptr), using the SRTP context ctx.  If
+ * err_status_ok is returned, then srtp_hdr points to the resulting
+ * RTP packet and *len_ptr is the number of octets in that packet;
+ * otherwise, no assumptions should be made about the value of either
+ * data elements.  
+ * 
+ * The sequence numbers of the RTP packets presented to this function
+ * need not be consecutive, but they @b must be out of order by less
+ * than 2^15 = 32,768 packets.
+ * 
+ * @warning This function assumes that the SRTP packet is aligned on a
+ * 32-bit boundary.
+ *
+ * @param ctx is a pointer to the srtp_t which applies to the
+ * particular packet.
+ *
+ * @param srtp_hdr is a pointer to the header of the SRTP packet
+ * (before the call).  after the function returns, it points to the
+ * rtp packet if err_status_ok was returned; otherwise, the value of
+ * the data to which it points is undefined.
+ *
+ * @param len_ptr is a pointer to the length in octets of the complete
+ * srtp packet (header and body) before the function call, and of the
+ * complete rtp packet after the call, if err_status_ok was returned.
+ * Otherwise, the value of the data to which it points is undefined.
+ *
+ * @return 
+ *    - err_status_ok          if the RTP packet is valid.
+ *    - err_status_auth_fail   if the SRTP packet failed the message 
+ *                             authentication check.
+ *    - err_status_replay_fail if the SRTP packet is a replay (e.g. packet has
+ *                             already been processed and accepted).
+ *    - [other]  if there has been an error in the cryptographic mechanisms.
+ *
+ */
+
+err_status_t
+srtp_unprotect(srtp_t ctx, void *srtp_hdr, int *len_ptr);
+
+
+/**
+ * @brief srtp_create() allocates and initializes an SRTP session.
+
+ * The function call srtp_create(session, policy, key) allocates and
+ * initializes an SRTP session context, applying the given policy and
+ * key.
+ *
+ * @param session is the SRTP session to which the policy is to be added.
+ * 
+ * @param policy is the srtp_policy_t struct that describes the policy
+ * for the session.  The struct may be a single element, or it may be
+ * the head of a list, in which case each element of the list is
+ * processed.  It may also be NULL, in which case streams should be added
+ * later using srtp_add_stream().  The final element of the list @b must
+ * have its `next' field set to NULL.
+ * 
+ * @return
+ *    - err_status_ok           if creation succeded.
+ *    - err_status_alloc_fail   if allocation failed.
+ *    - err_status_init_fail    if initialization failed.
+ */
+
+err_status_t
+srtp_create(srtp_t *session, const srtp_policy_t *policy);
+
+
+/**
+ * @brief srtp_add_stream() allocates and initializes an SRTP stream
+ * within a given SRTP session.
+ * 
+ * The function call srtp_add_stream(session, policy) allocates and
+ * initializes a new SRTP stream within a given, previously created
+ * session, applying the policy given as the other argument to that
+ * stream.
+ *
+ * @return values:
+ *    - err_status_ok           if stream creation succeded.
+ *    - err_status_alloc_fail   if stream allocation failed
+ *    - err_status_init_fail    if stream initialization failed.
+ */
+
+err_status_t
+srtp_add_stream(srtp_t session, 
+		const srtp_policy_t *policy);
+
+
+/**
+ * @brief srtp_remove_stream() deallocates an SRTP stream.
+ * 
+ * The function call srtp_remove_stream(session, ssrc) removes
+ * the SRTP stream with the SSRC value ssrc from the SRTP session
+ * context given by the argument session.
+ *
+ * @param session is the SRTP session from which the stream
+ *        will be removed.
+ *
+ * @param ssrc is the SSRC value of the stream to be removed.
+ *
+ * @warning Wildcard SSRC values cannot be removed from a
+ *          session.
+ * 
+ * @return
+ *    - err_status_ok     if the stream deallocation succeded.
+ *    - [other]           otherwise.
+ *
+ */
+
+err_status_t
+srtp_remove_stream(srtp_t session, unsigned int ssrc);
+
+/**
+ * @brief crypto_policy_set_rtp_default() sets a crypto policy
+ * structure to the SRTP default policy for RTP protection.
+ *
+ * @param p is a pointer to the policy structure to be set 
+ * 
+ * The function call crypto_policy_set_rtp_default(&p) sets the
+ * crypto_policy_t at location p to the SRTP default policy for RTP
+ * protection, as defined in the specification.  This function is a
+ * convenience that helps to avoid dealing directly with the policy
+ * data structure.  You are encouraged to initialize policy elements
+ * with this function call.  Doing so may allow your code to be
+ * forward compatible with later versions of libSRTP that include more
+ * elements in the crypto_policy_t datatype.
+ * 
+ * @return void.
+ * 
+ */
+
+void
+crypto_policy_set_rtp_default(crypto_policy_t *p);
+
+/**
+ * @brief crypto_policy_set_rtcp_default() sets a crypto policy
+ * structure to the SRTP default policy for RTCP protection.
+ *
+ * @param p is a pointer to the policy structure to be set 
+ * 
+ * The function call crypto_policy_set_rtcp_default(&p) sets the
+ * crypto_policy_t at location p to the SRTP default policy for RTCP
+ * protection, as defined in the specification.  This function is a
+ * convenience that helps to avoid dealing directly with the policy
+ * data structure.  You are encouraged to initialize policy elements
+ * with this function call.  Doing so may allow your code to be
+ * forward compatible with later versions of libSRTP that include more
+ * elements in the crypto_policy_t datatype.
+ * 
+ * @return void.
+ * 
+ */
+
+void
+crypto_policy_set_rtcp_default(crypto_policy_t *p);
+
+/**
+ * @brief crypto_policy_set_aes_cm_128_hmac_sha1_80() sets a crypto
+ * policy structure to the SRTP default policy for RTP protection.
+ *
+ * @param p is a pointer to the policy structure to be set 
+ * 
+ * The function crypto_policy_set_aes_cm_128_hmac_sha1_80() is a
+ * synonym for crypto_policy_set_rtp_default().  It conforms to the
+ * naming convention used in
+ * http://www.ietf.org/internet-drafts/draft-ietf-mmusic-sdescriptions-12.txt
+ * 
+ * @return void.
+ * 
+ */
+
+#define crypto_policy_set_aes_cm_128_hmac_sha1_80(p) crypto_policy_set_rtp_default(p)
+
+
+/**
+ * @brief crypto_policy_set_aes_cm_128_hmac_sha1_32() sets a crypto
+ * policy structure to a short-authentication tag policy
+ *
+ * @param p is a pointer to the policy structure to be set 
+ * 
+ * The function call crypto_policy_set_aes_cm_128_hmac_sha1_32(&p)
+ * sets the crypto_policy_t at location p to use policy
+ * AES_CM_128_HMAC_SHA1_32 as defined in
+ * draft-ietf-mmusic-sdescriptions-12.txt.  This policy uses AES-128
+ * Counter Mode encryption and HMAC-SHA1 authentication, with an
+ * authentication tag that is only 32 bits long.  This length is
+ * considered adequate only for protecting audio and video media that
+ * use a stateless playback function.  See Section 7.5 of RFC 3711
+ * (http://www.ietf.org/rfc/rfc3711.txt).
+ * 
+ * This function is a convenience that helps to avoid dealing directly
+ * with the policy data structure.  You are encouraged to initialize
+ * policy elements with this function call.  Doing so may allow your
+ * code to be forward compatible with later versions of libSRTP that
+ * include more elements in the crypto_policy_t datatype.
+ *
+ * @warning This crypto policy is intended for use in SRTP, but not in
+ * SRTCP.  It is recommended that a policy that uses longer
+ * authentication tags be used for SRTCP.  See Section 7.5 of RFC 3711
+ * (http://www.ietf.org/rfc/rfc3711.txt).
+ *
+ * @return void.
+ * 
+ */
+
+void
+crypto_policy_set_aes_cm_128_hmac_sha1_32(crypto_policy_t *p);
+
+
+
+/**
+ * @brief crypto_policy_set_aes_cm_128_null_auth() sets a crypto
+ * policy structure to an encryption-only policy
+ *
+ * @param p is a pointer to the policy structure to be set 
+ * 
+ * The function call crypto_policy_set_aes_cm_128_null_auth(&p) sets
+ * the crypto_policy_t at location p to use the SRTP default cipher
+ * (AES-128 Counter Mode), but to use no authentication method.  This
+ * policy is NOT RECOMMENDED unless it is unavoidable; see Section 7.5
+ * of RFC 3711 (http://www.ietf.org/rfc/rfc3711.txt).
+ * 
+ * This function is a convenience that helps to avoid dealing directly
+ * with the policy data structure.  You are encouraged to initialize
+ * policy elements with this function call.  Doing so may allow your
+ * code to be forward compatible with later versions of libSRTP that
+ * include more elements in the crypto_policy_t datatype.
+ *
+ * @warning This policy is NOT RECOMMENDED for SRTP unless it is
+ * unavoidable, and it is NOT RECOMMENDED at all for SRTCP; see
+ * Section 7.5 of RFC 3711 (http://www.ietf.org/rfc/rfc3711.txt).
+ *
+ * @return void.
+ * 
+ */
+
+void
+crypto_policy_set_aes_cm_128_null_auth(crypto_policy_t *p);
+
+
+/**
+ * @brief crypto_policy_set_null_cipher_hmac_sha1_80() sets a crypto
+ * policy structure to an authentication-only policy
+ *
+ * @param p is a pointer to the policy structure to be set 
+ * 
+ * The function call crypto_policy_set_null_cipher_hmac_sha1_80(&p)
+ * sets the crypto_policy_t at location p to use HMAC-SHA1 with an 80
+ * bit authentication tag to provide message authentication, but to
+ * use no encryption.  This policy is NOT RECOMMENDED for SRTP unless
+ * there is a requirement to forego encryption.  
+ * 
+ * This function is a convenience that helps to avoid dealing directly
+ * with the policy data structure.  You are encouraged to initialize
+ * policy elements with this function call.  Doing so may allow your
+ * code to be forward compatible with later versions of libSRTP that
+ * include more elements in the crypto_policy_t datatype.
+ *
+ * @warning This policy is NOT RECOMMENDED for SRTP unless there is a
+ * requirement to forego encryption.  
+ *
+ * @return void.
+ * 
+ */
+
+void
+crypto_policy_set_null_cipher_hmac_sha1_80(crypto_policy_t *p);
+
+/**
+ * @brief srtp_dealloc() deallocates storage for an SRTP session
+ * context.
+ * 
+ * The function call srtp_dealloc(s) deallocates storage for the
+ * SRTP session context s.  This function should be called no more
+ * than one time for each of the contexts allocated by the function
+ * srtp_create().
+ *
+ * @param s is the srtp_t for the session to be deallocated.
+ *
+ * @return
+ *    - err_status_ok             if there no problems.
+ *    - err_status_dealloc_fail   a memory deallocation failure occured.
+ */
+
+err_status_t
+srtp_dealloc(srtp_t s);
+
+
+/*
+ * @brief identifies a particular SRTP profile 
+ *
+ * An srtp_profile_t enumeration is used to identify a particular SRTP
+ * profile (that is, a set of algorithms and parameters).  These
+ * profiles are defined in the DTLS-SRTP draft.
+ */
+
+typedef enum {
+  srtp_profile_reserved           = 0,
+  srtp_profile_aes128_cm_sha1_80  = 1,
+  srtp_profile_aes128_cm_sha1_32  = 2,
+  srtp_profile_aes256_cm_sha1_80  = 3,
+  srtp_profile_aes256_cm_sha1_32  = 4,
+  srtp_profile_null_sha1_80       = 5,
+  srtp_profile_null_sha1_32       = 6,
+} srtp_profile_t;
+
+
+/**
+ * @brief crypto_policy_set_from_profile_for_rtp() sets a crypto policy
+ * structure to the appropriate value for RTP based on an srtp_profile_t
+ *
+ * @param p is a pointer to the policy structure to be set 
+ * 
+ * The function call crypto_policy_set_rtp_default(&policy, profile)
+ * sets the crypto_policy_t at location policy to the policy for RTP
+ * protection, as defined by the srtp_profile_t profile.
+ * 
+ * This function is a convenience that helps to avoid dealing directly
+ * with the policy data structure.  You are encouraged to initialize
+ * policy elements with this function call.  Doing so may allow your
+ * code to be forward compatible with later versions of libSRTP that
+ * include more elements in the crypto_policy_t datatype.
+ * 
+ * @return values
+ *     - err_status_ok         no problems were encountered
+ *     - err_status_bad_param  the profile is not supported 
+ * 
+ */
+err_status_t
+crypto_policy_set_from_profile_for_rtp(crypto_policy_t *policy, 
+				       srtp_profile_t profile);
+
+
+
+
+/**
+ * @brief crypto_policy_set_from_profile_for_rtcp() sets a crypto policy
+ * structure to the appropriate value for RTCP based on an srtp_profile_t
+ *
+ * @param p is a pointer to the policy structure to be set 
+ * 
+ * The function call crypto_policy_set_rtcp_default(&policy, profile)
+ * sets the crypto_policy_t at location policy to the policy for RTCP
+ * protection, as defined by the srtp_profile_t profile.
+ * 
+ * This function is a convenience that helps to avoid dealing directly
+ * with the policy data structure.  You are encouraged to initialize
+ * policy elements with this function call.  Doing so may allow your
+ * code to be forward compatible with later versions of libSRTP that
+ * include more elements in the crypto_policy_t datatype.
+ * 
+ * @return values
+ *     - err_status_ok         no problems were encountered
+ *     - err_status_bad_param  the profile is not supported 
+ * 
+ */
+err_status_t
+crypto_policy_set_from_profile_for_rtcp(crypto_policy_t *policy, 
+				       srtp_profile_t profile);
+
+/**
+ * @brief returns the master key length for a given SRTP profile
+ */
+unsigned int
+srtp_profile_get_master_key_length(srtp_profile_t profile);
+
+
+/**
+ * @brief returns the master salt length for a given SRTP profile
+ */
+unsigned int
+srtp_profile_get_master_salt_length(srtp_profile_t profile);
+
+/**
+ * @brief appends the salt to the key
+ *
+ * The function call append_salt_to_key(k, klen, s, slen) 
+ * copies the string s to the location at klen bytes following
+ * the location k.  
+ *
+ * @warning There must be at least bytes_in_salt + bytes_in_key bytes
+ *          available at the location pointed to by key.
+ * 
+ */
+
+void
+append_salt_to_key(unsigned char *key, unsigned int bytes_in_key,
+		   unsigned char *salt, unsigned int bytes_in_salt);
+
+
+
+/**
+ * @}
+ */
+
+
+
+/**
+ * @defgroup SRTCP Secure RTCP
+ * @ingroup  SRTP 
+ *
+ * @brief Secure RTCP functions are used to protect RTCP traffic.
+ *
+ * RTCP is the control protocol for RTP.  libSRTP protects RTCP
+ * traffic in much the same way as it does RTP traffic.  The function
+ * srtp_protect_rtcp() applies cryptographic protections to outbound
+ * RTCP packets, and srtp_unprotect_rtcp() verifies the protections on
+ * inbound RTCP packets.  
+ *
+ * A note on the naming convention: srtp_protect_rtcp() has an srtp_t
+ * as its first argument, and thus has `srtp_' as its prefix.  The
+ * trailing `_rtcp' indicates the protocol on which it acts.  
+ * 
+ * @{
+ */
+
+/**
+ * @brief srtp_protect_rtcp() is the Secure RTCP sender-side packet
+ * processing function.
+ * 
+ * The function call srtp_protect_rtcp(ctx, rtp_hdr, len_ptr) applies
+ * SRTCP protection to the RTCP packet rtcp_hdr (which has length
+ * *len_ptr) using the SRTP session context ctx.  If err_status_ok is
+ * returned, then rtp_hdr points to the resulting SRTCP packet and
+ * *len_ptr is the number of octets in that packet; otherwise, no
+ * assumptions should be made about the value of either data elements.
+ * 
+ * @warning This function assumes that it can write the authentication
+ * tag into the location in memory immediately following the RTCP
+ * packet, and assumes that the RTCP packet is aligned on a 32-bit
+ * boundary.
+ *
+ * @param ctx is the SRTP context to use in processing the packet.
+ *
+ * @param rtcp_hdr is a pointer to the RTCP packet (before the call); after
+ * the function returns, it points to the srtp packet.
+ *
+ * @param pkt_octet_len is a pointer to the length in octets of the
+ * complete RTCP packet (header and body) before the function call,
+ * and of the complete SRTCP packet after the call, if err_status_ok
+ * was returned.  Otherwise, the value of the data to which it points
+ * is undefined.
+ *
+ * @return 
+ *    - err_status_ok            if there were no problems.
+ *    - [other]                  if there was a failure in 
+ *                               the cryptographic mechanisms.
+ */
+	     
+
+err_status_t 
+srtp_protect_rtcp(srtp_t ctx, void *rtcp_hdr, int *pkt_octet_len);
+
+/**
+ * @brief srtp_unprotect_rtcp() is the Secure RTCP receiver-side packet
+ * processing function.
+ *
+ * The function call srtp_unprotect_rtcp(ctx, srtp_hdr, len_ptr)
+ * verifies the Secure RTCP protection of the SRTCP packet pointed to
+ * by srtcp_hdr (which has length *len_ptr), using the SRTP session
+ * context ctx.  If err_status_ok is returned, then srtcp_hdr points
+ * to the resulting RTCP packet and *len_ptr is the number of octets
+ * in that packet; otherwise, no assumptions should be made about the
+ * value of either data elements.
+ * 
+ * @warning This function assumes that the SRTCP packet is aligned on a
+ * 32-bit boundary.
+ *
+ * @param ctx is a pointer to the srtp_t which applies to the
+ * particular packet.
+ *
+ * @param srtcp_hdr is a pointer to the header of the SRTCP packet
+ * (before the call).  After the function returns, it points to the
+ * rtp packet if err_status_ok was returned; otherwise, the value of
+ * the data to which it points is undefined.
+ *
+ * @param pkt_octet_len is a pointer to the length in octets of the
+ * complete SRTCP packet (header and body) before the function call,
+ * and of the complete rtp packet after the call, if err_status_ok was
+ * returned.  Otherwise, the value of the data to which it points is
+ * undefined.
+ *
+ * @return 
+ *    - err_status_ok          if the RTCP packet is valid.
+ *    - err_status_auth_fail   if the SRTCP packet failed the message 
+ *                             authentication check.
+ *    - err_status_replay_fail if the SRTCP packet is a replay (e.g. has
+ *                             already been processed and accepted).
+ *    - [other]  if there has been an error in the cryptographic mechanisms.
+ *
+ */
+
+err_status_t 
+srtp_unprotect_rtcp(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len);
+
+/**
+ * @}
+ */
+
+/**
+ * @defgroup SRTPevents SRTP events and callbacks
+ * @ingroup  SRTP
+ *
+ * @brief libSRTP can use a user-provided callback function to 
+ * handle events.
+ *
+ * 
+ * libSRTP allows a user to provide a callback function to handle
+ * events that need to be dealt with outside of the data plane (see
+ * the enum srtp_event_t for a description of these events).  Dealing
+ * with these events is not a strict necessity; they are not
+ * security-critical, but the application may suffer if they are not
+ * handled.  The function srtp_set_event_handler() is used to provide
+ * the callback function.
+ *
+ * A default event handler that merely reports on the events as they
+ * happen is included.  It is also possible to set the event handler
+ * function to NULL, in which case all events will just be silently
+ * ignored.
+ *
+ * @{
+ */
+
+/**
+ * @brief srtp_event_t defines events that need to be handled
+ *
+ * The enum srtp_event_t defines events that need to be handled
+ * outside the `data plane', such as SSRC collisions and 
+ * key expirations.  
+ *
+ * When a key expires or the maximum number of packets has been
+ * reached, an SRTP stream will enter an `expired' state in which no
+ * more packets can be protected or unprotected.  When this happens,
+ * it is likely that you will want to either deallocate the stream
+ * (using srtp_stream_dealloc()), and possibly allocate a new one.
+ *
+ * When an SRTP stream expires, the other streams in the same session
+ * are unaffected, unless key sharing is used by that stream.  In the
+ * latter case, all of the streams in the session will expire.
+ */
+
+typedef enum { 
+  event_ssrc_collision,    /**<
+			    * An SSRC collision occured.             
+			    */
+  event_key_soft_limit,    /**< An SRTP stream reached the soft key
+			    *   usage limit and will expire soon.	   
+			    */
+  event_key_hard_limit,    /**< An SRTP stream reached the hard 
+			    *   key usage limit and has expired.
+			    */
+  event_packet_index_limit /**< An SRTP stream reached the hard 
+			    * packet limit (2^48 packets).             
+			    */
+} srtp_event_t;
+
+/**
+ * @brief srtp_event_data_t is the structure passed as a callback to 
+ * the event handler function
+ *
+ * The struct srtp_event_data_t holds the data passed to the event
+ * handler function.  
+ */
+
+typedef struct srtp_event_data_t {
+  srtp_t        session;  /**< The session in which the event happend. */
+  srtp_stream_t stream;   /**< The stream in which the event happend.  */
+  srtp_event_t  event;    /**< An enum indicating the type of event.   */
+} srtp_event_data_t;
+
+/**
+ * @brief srtp_event_handler_func_t is the function prototype for
+ * the event handler.
+ *
+ * The typedef srtp_event_handler_func_t is the prototype for the
+ * event handler function.  It has as its only argument an
+ * srtp_event_data_t which describes the event that needs to be handled.
+ * There can only be a single, global handler for all events in
+ * libSRTP.
+ */
+
+typedef void (srtp_event_handler_func_t)(srtp_event_data_t *data);
+
+/**
+ * @brief sets the event handler to the function supplied by the caller.
+ * 
+ * The function call srtp_install_event_handler(func) sets the event
+ * handler function to the value func.  The value NULL is acceptable
+ * as an argument; in this case, events will be ignored rather than
+ * handled.
+ *
+ * @param func is a pointer to a fuction that takes an srtp_event_data_t
+ *             pointer as an argument and returns void.  This function
+ *             will be used by libSRTP to handle events.
+ */
+
+err_status_t
+srtp_install_event_handler(srtp_event_handler_func_t func);
+
+/**
+ * @}
+ */
+/* in host order, so outside the #if */
+#define SRTCP_E_BIT      0x80000000
+/* for byte-access */
+#define SRTCP_E_BYTE_BIT 0x80
+#define SRTCP_INDEX_MASK 0x7fffffff
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SRTP_H */
diff --git a/include/srtp_priv.h b/include/srtp_priv.h
new file mode 100644
index 0000000..3bed757
--- /dev/null
+++ b/include/srtp_priv.h
@@ -0,0 +1,263 @@
+/*
+ * srtp_priv.h
+ *
+ * private internal data structures and functions for libSRTP
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef SRTP_PRIV_H
+#define SRTP_PRIV_H
+
+#include "srtp.h"
+#include "rdbx.h"
+#include "rdb.h"
+#include "integers.h"
+
+/*
+ * an srtp_hdr_t represents the srtp header
+ *
+ * in this implementation, an srtp_hdr_t is assumed to be 32-bit aligned
+ * 
+ * (note that this definition follows that of RFC 1889 Appendix A, but
+ * is not identical)
+ */
+ 
+#ifndef WORDS_BIGENDIAN
+
+/*
+ * srtp_hdr_t represents an RTP or SRTP header.  The bit-fields in
+ * this structure should be declared "unsigned int" instead of 
+ * "unsigned char", but doing so causes the MS compiler to not
+ * fully pack the bit fields.
+ */
+
+typedef struct {
+  unsigned char cc:4;	/* CSRC count             */
+  unsigned char x:1;	/* header extension flag  */
+  unsigned char p:1;	/* padding flag           */
+  unsigned char version:2; /* protocol version    */
+  unsigned char pt:7;	/* payload type           */
+  unsigned char m:1;	/* marker bit             */
+  uint16_t seq;		/* sequence number        */
+  uint32_t ts;		/* timestamp              */
+  uint32_t ssrc;	/* synchronization source */
+} srtp_hdr_t;
+
+#else /*  BIG_ENDIAN */
+
+typedef struct {
+  unsigned char version:2; /* protocol version    */
+  unsigned char p:1;	/* padding flag           */
+  unsigned char x:1;	/* header extension flag  */
+  unsigned char cc:4;	/* CSRC count             */
+  unsigned char m:1;	/* marker bit             */
+  unsigned pt:7;	/* payload type           */
+  uint16_t seq;		/* sequence number        */
+  uint32_t ts;		/* timestamp              */
+  uint32_t ssrc;	/* synchronization source */
+} srtp_hdr_t;
+
+#endif
+
+typedef struct {
+  uint16_t profile_specific;    /* profile-specific info               */
+  uint16_t length;              /* number of 32-bit words in extension */
+} srtp_hdr_xtnd_t;
+
+
+/*
+ * srtcp_hdr_t represents a secure rtcp header 
+ *
+ * in this implementation, an srtcp header is assumed to be 32-bit
+ * alinged
+ */
+
+#ifndef WORDS_BIGENDIAN
+
+typedef struct {
+  unsigned char rc:5;		/* reception report count */
+  unsigned char p:1;		/* padding flag           */
+  unsigned char version:2;	/* protocol version       */
+  unsigned char pt:8;		/* payload type           */
+  uint16_t len;			/* length                 */
+  uint32_t ssrc;	       	/* synchronization source */
+} srtcp_hdr_t;
+
+typedef struct {
+  unsigned int index:31;    /* srtcp packet index in network order! */
+  unsigned int e:1;         /* encrypted? 1=yes */
+  /* optional mikey/etc go here */
+  /* and then the variable-length auth tag */
+} srtcp_trailer_t;
+
+
+#else /*  BIG_ENDIAN */
+
+typedef struct {
+  unsigned char version:2;	/* protocol version       */
+  unsigned char p:1;		/* padding flag           */
+  unsigned char rc:5;		/* reception report count */
+  unsigned char pt:8;		/* payload type           */
+  uint16_t len;			/* length                 */
+  uint32_t ssrc;	       	/* synchronization source */
+} srtcp_hdr_t;
+
+typedef struct {
+  unsigned int version:2;  /* protocol version                     */
+  unsigned int p:1;        /* padding flag                         */
+  unsigned int count:5;    /* varies by packet type                */
+  unsigned int pt:8;       /* payload type                         */
+  uint16_t length;         /* len of uint32s of packet less header */
+} rtcp_common_t;
+
+typedef struct {
+  unsigned int e:1;         /* encrypted? 1=yes */
+  unsigned int index:31;    /* srtcp packet index */
+  /* optional mikey/etc go here */
+  /* and then the variable-length auth tag */
+} srtcp_trailer_t;
+
+#endif
+
+
+/*
+ * the following declarations are libSRTP internal functions 
+ */
+
+/*
+ * srtp_get_stream(ssrc) returns a pointer to the stream corresponding
+ * to ssrc, or NULL if no stream exists for that ssrc
+ */
+
+srtp_stream_t 
+srtp_get_stream(srtp_t srtp, uint32_t ssrc);
+
+
+/*
+ * srtp_stream_init_keys(s, k) (re)initializes the srtp_stream_t s by
+ * deriving all of the needed keys using the KDF and the key k.
+ */
+
+
+err_status_t
+srtp_stream_init_keys(srtp_stream_t srtp, const void *key);
+
+/*
+ * srtp_stream_init(s, p) initializes the srtp_stream_t s to 
+ * use the policy at the location p
+ */
+err_status_t
+srtp_stream_init(srtp_stream_t srtp, 
+		 const srtp_policy_t *p);
+
+
+/*
+ * Uninitializes and Deallocates a stream.
+ */
+err_status_t
+srtp_stream_uninit_and_dealloc(srtp_stream_t stream,
+                               srtp_stream_t stream_template);
+
+/*
+ * libsrtp internal datatypes 
+ */
+
+typedef enum direction_t { 
+  dir_unknown       = 0,
+  dir_srtp_sender   = 1, 
+  dir_srtp_receiver = 2
+} direction_t;
+
+/* 
+ * an srtp_stream_t has its own SSRC, encryption key, authentication
+ * key, sequence number, and replay database
+ * 
+ * note that the keys might not actually be unique, in which case the
+ * cipher_t and auth_t pointers will point to the same structures
+ */
+
+typedef struct srtp_stream_ctx_t {
+  uint32_t   ssrc;
+  cipher_t  *rtp_cipher;
+  auth_t    *rtp_auth;
+  rdbx_t     rtp_rdbx;
+  sec_serv_t rtp_services;
+  cipher_t  *rtcp_cipher;
+  auth_t    *rtcp_auth;
+  rdb_t      rtcp_rdb;
+  sec_serv_t rtcp_services;
+  key_limit_ctx_t *limit;
+  direction_t direction;
+  int        allow_repeat_tx;
+  ekt_stream_t ekt; 
+  struct srtp_stream_ctx_t *next;   /* linked list of streams */
+} srtp_stream_ctx_t;
+
+
+/*
+ * an srtp_ctx_t holds a stream list and a service description
+ */
+
+typedef struct srtp_ctx_t {
+  srtp_stream_ctx_t *stream_list;     /* linked list of streams            */
+  srtp_stream_ctx_t *stream_template; /* act as template for other streams */
+} srtp_ctx_t;
+
+
+
+/*
+ * srtp_handle_event(srtp, srtm, evnt) calls the event handling
+ * function, if there is one.
+ *
+ * This macro is not included in the documentation as it is 
+ * an internal-only function.
+ */
+
+#define srtp_handle_event(srtp, strm, evnt)         \
+   if(srtp_event_handler) {                         \
+      srtp_event_data_t data;                       \
+      data.session = srtp;                          \
+      data.stream  = strm;                          \
+      data.event   = evnt;                          \
+      srtp_event_handler(&data);                    \
+}   
+
+
+#endif /* SRTP_PRIV_H */
diff --git a/include/ut_sim.h b/include/ut_sim.h
new file mode 100644
index 0000000..c25feeb
--- /dev/null
+++ b/include/ut_sim.h
@@ -0,0 +1,80 @@
+/*
+ * ut-sim.h
+ *
+ * an unreliable transport simulator
+ * (for testing replay databases and suchlike)
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+
+#ifndef UT_SIM_H
+#define UT_SIM_H
+
+#include "integers.h"  /* for uint32_t */
+
+#define UT_BUF 160      /* maximum amount of packet reorder */
+
+typedef struct {
+  uint32_t index;
+  uint32_t buffer[UT_BUF];
+} ut_connection;
+
+/*
+ * ut_init(&u) initializes the ut_connection 
+ *
+ * this function should always be the first one called on a new
+ * ut_connection
+ */
+
+void
+ut_init(ut_connection *utc);
+
+/*
+ * ut_next_index(&u) returns the next index from the simulated
+ * unreliable connection
+ */
+
+uint32_t
+ut_next_index(ut_connection *utc);
+
+
+#endif /* UT_SIM_H */
diff --git a/install-sh b/install-sh
new file mode 100755
index 0000000..e9de238
--- /dev/null
+++ b/install-sh
@@ -0,0 +1,251 @@
+#!/bin/sh
+#
+# install - install a program, script, or datafile
+# This comes from X11R5 (mit/util/scripts/install.sh).
+#
+# Copyright 1991 by the Massachusetts Institute of Technology
+#
+# Permission to use, copy, modify, distribute, and sell this software and its
+# documentation for any purpose is hereby granted without fee, provided that
+# the above copyright notice appear in all copies and that both that
+# copyright notice and this permission notice appear in supporting
+# documentation, and that the name of M.I.T. not be used in advertising or
+# publicity pertaining to distribution of the software without specific,
+# written prior permission.  M.I.T. makes no representations about the
+# suitability of this software for any purpose.  It is provided "as is"
+# without express or implied warranty.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# `make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.  It can only install one file at a time, a restriction
+# shared with many OS's install programs.
+
+
+# set DOITPROG to echo to test this script
+
+# Don't use :- since 4.3BSD and earlier shells don't like it.
+doit="${DOITPROG-}"
+
+
+# put in absolute paths if you don't have them in your path; or use env. vars.
+
+mvprog="${MVPROG-mv}"
+cpprog="${CPPROG-cp}"
+chmodprog="${CHMODPROG-chmod}"
+chownprog="${CHOWNPROG-chown}"
+chgrpprog="${CHGRPPROG-chgrp}"
+stripprog="${STRIPPROG-strip}"
+rmprog="${RMPROG-rm}"
+mkdirprog="${MKDIRPROG-mkdir}"
+
+transformbasename=""
+transform_arg=""
+instcmd="$mvprog"
+chmodcmd="$chmodprog 0755"
+chowncmd=""
+chgrpcmd=""
+stripcmd=""
+rmcmd="$rmprog -f"
+mvcmd="$mvprog"
+src=""
+dst=""
+dir_arg=""
+
+while [ x"$1" != x ]; do
+    case $1 in
+	-c) instcmd="$cpprog"
+	    shift
+	    continue;;
+
+	-d) dir_arg=true
+	    shift
+	    continue;;
+
+	-m) chmodcmd="$chmodprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-o) chowncmd="$chownprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-g) chgrpcmd="$chgrpprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-s) stripcmd="$stripprog"
+	    shift
+	    continue;;
+
+	-t=*) transformarg=`echo $1 | sed 's/-t=//'`
+	    shift
+	    continue;;
+
+	-b=*) transformbasename=`echo $1 | sed 's/-b=//'`
+	    shift
+	    continue;;
+
+	*)  if [ x"$src" = x ]
+	    then
+		src=$1
+	    else
+		# this colon is to work around a 386BSD /bin/sh bug
+		:
+		dst=$1
+	    fi
+	    shift
+	    continue;;
+    esac
+done
+
+if [ x"$src" = x ]
+then
+	echo "install:	no input file specified"
+	exit 1
+else
+	true
+fi
+
+if [ x"$dir_arg" != x ]; then
+	dst=$src
+	src=""
+	
+	if [ -d $dst ]; then
+		instcmd=:
+		chmodcmd=""
+	else
+		instcmd=mkdir
+	fi
+else
+
+# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
+# might cause directories to be created, which would be especially bad 
+# if $src (and thus $dsttmp) contains '*'.
+
+	if [ -f $src -o -d $src ]
+	then
+		true
+	else
+		echo "install:  $src does not exist"
+		exit 1
+	fi
+	
+	if [ x"$dst" = x ]
+	then
+		echo "install:	no destination specified"
+		exit 1
+	else
+		true
+	fi
+
+# If destination is a directory, append the input filename; if your system
+# does not like double slashes in filenames, you may need to add some logic
+
+	if [ -d $dst ]
+	then
+		dst="$dst"/`basename $src`
+	else
+		true
+	fi
+fi
+
+## this sed command emulates the dirname command
+dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
+
+# Make sure that the destination directory exists.
+#  this part is taken from Noah Friedman's mkinstalldirs script
+
+# Skip lots of stat calls in the usual case.
+if [ ! -d "$dstdir" ]; then
+defaultIFS='	
+'
+IFS="${IFS-${defaultIFS}}"
+
+oIFS="${IFS}"
+# Some sh's can't handle IFS=/ for some reason.
+IFS='%'
+set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
+IFS="${oIFS}"
+
+pathcomp=''
+
+while [ $# -ne 0 ] ; do
+	pathcomp="${pathcomp}${1}"
+	shift
+
+	if [ ! -d "${pathcomp}" ] ;
+        then
+		$mkdirprog "${pathcomp}"
+	else
+		true
+	fi
+
+	pathcomp="${pathcomp}/"
+done
+fi
+
+if [ x"$dir_arg" != x ]
+then
+	$doit $instcmd $dst &&
+
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
+else
+
+# If we're going to rename the final executable, determine the name now.
+
+	if [ x"$transformarg" = x ] 
+	then
+		dstfile=`basename $dst`
+	else
+		dstfile=`basename $dst $transformbasename | 
+			sed $transformarg`$transformbasename
+	fi
+
+# don't allow the sed command to completely eliminate the filename
+
+	if [ x"$dstfile" = x ] 
+	then
+		dstfile=`basename $dst`
+	else
+		true
+	fi
+
+# Make a temp file name in the proper directory.
+
+	dsttmp=$dstdir/#inst.$$#
+
+# Move or copy the file name to the temp name
+
+	$doit $instcmd $src $dsttmp &&
+
+	trap "rm -f ${dsttmp}" 0 &&
+
+# and set any options; do chmod last to preserve setuid bits
+
+# If any of these fail, we abort the whole thing.  If we want to
+# ignore errors from any of these, just make sure not to ignore
+# errors from the above "$doit $instcmd $src $dsttmp" command.
+
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi &&
+
+# Now rename the file to the real destination.
+
+	$doit $rmcmd -f $dstdir/$dstfile &&
+	$doit $mvcmd $dsttmp $dstdir/$dstfile 
+
+fi &&
+
+
+exit 0
diff --git a/srtp.def b/srtp.def
new file mode 100644
index 0000000..6fc94da
--- /dev/null
+++ b/srtp.def
@@ -0,0 +1,91 @@
+EXPORTS
+srtp_init
+srtp_protect
+srtp_unprotect
+srtp_create
+srtp_add_stream
+srtp_remove_stream
+crypto_policy_set_rtp_default
+crypto_policy_set_rtcp_default
+crypto_policy_set_aes_cm_128_hmac_sha1_32
+crypto_policy_set_aes_cm_128_null_auth
+crypto_policy_set_null_cipher_hmac_sha1_80
+srtp_dealloc
+srtp_get_stream
+srtp_protect_rtcp
+srtp_unprotect_rtcp
+srtp_install_event_handler
+crypto_kernel_init
+crypto_kernel_shutdown
+crypto_kernel_status
+crypto_kernel_list_debug_modules
+crypto_kernel_load_cipher_type
+crypto_kernel_load_auth_type
+crypto_kernel_load_debug_module
+crypto_kernel_alloc_cipher
+crypto_kernel_alloc_auth
+crypto_kernel_set_debug_module
+crypto_get_random
+rand_source_init
+rand_source_get_octet_string
+rand_source_deinit
+x917_prng_init
+x917_prng_get_octet_string
+ctr_prng_init
+ctr_prng_get_octet_string
+cipher_output
+cipher_get_key_length
+cipher_type_self_test
+cipher_bits_per_second
+auth_get_key_length
+auth_get_tag_length
+auth_get_prefix_length
+auth_type_self_test
+auth_type_get_ref_count
+stat_test_monobit
+stat_test_poker
+stat_test_runs
+stat_test_rand_source
+stat_test_rand_source_with_repetition
+err_reporting_init
+err_report
+key_limit_set
+key_limit_clone
+key_limit_check
+key_limit_update
+rdbx_init
+rdbx_estimate_index
+rdbx_check
+rdbx_add_index
+index_init
+index_advance
+index_guess
+octet_get_weight
+octet_string_hex_string
+v128_bit_string
+v128_hex_string
+nibble_to_hex_char
+hex_string_to_octet_string
+v128_copy_octet_string
+v128_left_shift
+v128_right_shift
+octet_string_is_eq
+octet_string_set_to_zero
+rdb_init
+rdb_check
+rdb_add_index
+rdb_increment
+rdb_get_value
+aes_expand_encryption_key
+aes_expand_decryption_key
+aes_encrypt
+aes_decrypt
+aes_icm_context_init
+aes_icm_set_iv
+aes_icm_encrypt
+aes_icm_output
+aes_icm_dealloc
+aes_icm_encrypt_ismacryp
+aes_icm_alloc_ismacryp
+crypto_alloc
+crypto_free
diff --git a/srtp.vcproj b/srtp.vcproj
new file mode 100644
index 0000000..d781746
--- /dev/null
+++ b/srtp.vcproj
@@ -0,0 +1,588 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="8.00"
+	Name="srtp"
+	ProjectGUID="{EEF031CB-FED8-451E-A471-91EC8D4F6750}"
+	RootNamespace="srtp"
+	Keyword="Win32Proj"
+	>
+	<Platforms>
+		<Platform
+			Name="Win32"
+		/>
+	</Platforms>
+	<ToolFiles>
+	</ToolFiles>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
+			IntermediateDirectory="$(ConfigurationName)"
+			ConfigurationType="4"
+			CharacterSet="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+				Description="Creating config.h from config.hw"
+				CommandLine="copy /Y &quot;$(InputDir)config.hw&quot; &quot;$(InputDir)crypto\include\config.h&quot; &gt; NUL"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+				Description=""
+				CommandLine=""
+				Outputs=""
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="crypto/include;include"
+				PreprocessorDefinitions="WIN32;_DEBUG;_LIB;HAVE_CONFIG_H"
+				MinimalRebuild="true"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="1"
+				StructMemberAlignment="0"
+				UsePrecompiledHeader="0"
+				WarningLevel="3"
+				Detect64BitPortabilityProblems="true"
+				DebugInformationFormat="4"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLibrarianTool"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
+			IntermediateDirectory="$(ConfigurationName)"
+			ConfigurationType="4"
+			CharacterSet="1"
+			WholeProgramOptimization="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+				Description="Creating config.h from config.hw"
+				CommandLine="copy /Y &quot;$(InputDir)config.hw&quot; &quot;$(InputDir)crypto\include\config.h&quot; &gt; NUL"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+				Description=""
+				CommandLine=""
+				Outputs=""
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				AdditionalIncludeDirectories="crypto/include;include"
+				PreprocessorDefinitions="WIN32;NDEBUG;_LIB;HAVE_CONFIG_H"
+				RuntimeLibrary="0"
+				StructMemberAlignment="0"
+				UsePrecompiledHeader="0"
+				WarningLevel="3"
+				Detect64BitPortabilityProblems="true"
+				DebugInformationFormat="3"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLibrarianTool"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Debug Dll|Win32"
+			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
+			IntermediateDirectory="$(ConfigurationName)"
+			ConfigurationType="2"
+			CharacterSet="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+				Description="Creating config.h from config.hw"
+				CommandLine="copy /Y &quot;$(InputDir)config.hw&quot; &quot;$(InputDir)crypto\include\config.h&quot; &gt; NUL"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+				Description=""
+				CommandLine=""
+				Outputs=""
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				EnableIntrinsicFunctions="true"
+				AdditionalIncludeDirectories="crypto/include;include"
+				PreprocessorDefinitions="WIN32;_DEBUG;_LIB;HAVE_CONFIG_H"
+				MinimalRebuild="true"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="3"
+				StructMemberAlignment="0"
+				UsePrecompiledHeader="0"
+				WarningLevel="3"
+				Detect64BitPortabilityProblems="true"
+				DebugInformationFormat="4"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="Ws2_32.lib"
+				ModuleDefinitionFile="srtp.def"
+				OptimizeReferences="1"
+				EnableCOMDATFolding="1"
+				OptimizeForWindows98="1"
+				LinkTimeCodeGeneration="0"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCWebDeploymentTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release Dll|Win32"
+			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
+			IntermediateDirectory="$(ConfigurationName)"
+			ConfigurationType="2"
+			CharacterSet="1"
+			WholeProgramOptimization="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+				Description="Creating config.h from config.hw"
+				CommandLine="copy /Y &quot;$(InputDir)config.hw&quot; &quot;$(InputDir)crypto\include\config.h&quot; &gt; NUL"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+				Description=""
+				CommandLine=""
+				Outputs=""
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				AdditionalIncludeDirectories="crypto/include;include"
+				PreprocessorDefinitions="WIN32;NDEBUG;_LIB;HAVE_CONFIG_H"
+				RuntimeLibrary="2"
+				StructMemberAlignment="0"
+				UsePrecompiledHeader="0"
+				WarningLevel="3"
+				Detect64BitPortabilityProblems="true"
+				DebugInformationFormat="3"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="Ws2_32.lib"
+				ModuleDefinitionFile="srtp.def"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCWebDeploymentTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
+			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
+			>
+			<File
+				RelativePath=".\srtp\ekt.c"
+				>
+			</File>
+			<File
+				RelativePath=".\srtp\srtp.c"
+				>
+			</File>
+			<Filter
+				Name="Kernel"
+				>
+				<File
+					RelativePath=".\crypto\kernel\alloc.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\kernel\crypto_kernel.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\rng\ctr_prng.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\kernel\err.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\kernel\key.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\rng\prng.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\rng\rand_source.c"
+					>
+				</File>
+			</Filter>
+			<Filter
+				Name="Ciphers"
+				>
+				<File
+					RelativePath=".\crypto\cipher\aes.c"
+					>
+					<FileConfiguration
+						Name="Debug Dll|Win32"
+						>
+						<Tool
+							Name="VCCLCompilerTool"
+							InlineFunctionExpansion="0"
+							EnableIntrinsicFunctions="false"
+							EnableFunctionLevelLinking="false"
+						/>
+					</FileConfiguration>
+				</File>
+				<File
+					RelativePath=".\crypto\cipher\aes_cbc.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\cipher\aes_icm.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\cipher\cipher.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\cipher\null_cipher.c"
+					>
+				</File>
+			</Filter>
+			<Filter
+				Name="Hashes"
+				>
+				<File
+					RelativePath=".\crypto\hash\auth.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\hash\hmac.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\hash\null_auth.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\hash\sha1.c"
+					>
+				</File>
+			</Filter>
+			<Filter
+				Name="Replay"
+				>
+				<File
+					RelativePath=".\crypto\replay\rdb.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\replay\rdbx.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\replay\ut_sim.c"
+					>
+				</File>
+			</Filter>
+			<Filter
+				Name="Math"
+				>
+				<File
+					RelativePath=".\crypto\math\datatypes.c"
+					>
+				</File>
+				<File
+					RelativePath=".\crypto\math\stat.c"
+					>
+				</File>
+			</Filter>
+		</Filter>
+		<Filter
+			Name="Header Files"
+			Filter="h;hpp;hxx;hm;inl;inc;xsd"
+			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
+			>
+			<File
+				RelativePath=".\crypto\include\aes.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\aes_cbc.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\aes_icm.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\alloc.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\auth.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\cipher.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\config.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\crypto.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\crypto_kernel.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\crypto_types.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\cryptoalg.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\datatypes.h"
+				>
+			</File>
+			<File
+				RelativePath=".\include\ekt.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\err.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\gf2_8.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\hmac.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\integers.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\key.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\null_auth.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\null_cipher.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\prng.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\rand_source.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\rdb.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\rdbx.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\sha1.h"
+				>
+			</File>
+			<File
+				RelativePath=".\include\srtp.h"
+				>
+			</File>
+			<File
+				RelativePath=".\include\srtp_priv.h"
+				>
+			</File>
+			<File
+				RelativePath=".\crypto\include\stat.h"
+				>
+			</File>
+			<File
+				RelativePath=".\include\ut_sim.h"
+				>
+			</File>
+		</Filter>
+		<Filter
+			Name="Resource Files"
+			Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav"
+			UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}"
+			>
+		</Filter>
+		<File
+			RelativePath=".\config.hw"
+			>
+		</File>
+		<File
+			RelativePath=".\srtp.def"
+			>
+		</File>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>
diff --git a/srtp/ekt.c b/srtp/ekt.c
new file mode 100644
index 0000000..4f81f59
--- /dev/null
+++ b/srtp/ekt.c
@@ -0,0 +1,275 @@
+/*
+ * ekt.c
+ *
+ * Encrypted Key Transport for SRTP
+ * 
+ * David McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "err.h"
+#include "srtp_priv.h"
+#include "ekt.h"
+
+extern debug_module_t mod_srtp;
+
+/*
+ *  The EKT Authentication Tag format.
+ *
+ *    0                   1                   2                   3
+ *    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ *   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *   :                   Base Authentication Tag                     :
+ *   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *   :                     Encrypted Master Key                      :
+ *   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *   |                       Rollover Counter                        |
+ *   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *   |    Initial Sequence Number    |   Security Parameter Index    |
+ *   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ */			 
+
+#define EKT_OCTETS_AFTER_BASE_TAG 24
+#define EKT_OCTETS_AFTER_EMK       8
+#define EKT_OCTETS_AFTER_ROC       4
+#define EKT_SPI_LEN                2
+
+unsigned
+ekt_octets_after_base_tag(ekt_stream_t ekt) {
+  /*
+   * if the pointer ekt is NULL, then EKT is not in effect, so we
+   * indicate this by returning zero
+   */
+  if (!ekt)
+    return 0;
+
+  switch(ekt->data->ekt_cipher_type) {
+  case EKT_CIPHER_AES_128_ECB:
+    return 16 + EKT_OCTETS_AFTER_EMK;
+    break;
+  default:
+    break;
+  }
+  return 0;
+}
+
+static inline ekt_spi_t
+srtcp_packet_get_ekt_spi(const uint8_t *packet_start, unsigned pkt_octet_len) {
+  const uint8_t *spi_location;
+  
+  spi_location = packet_start + (pkt_octet_len - EKT_SPI_LEN);
+  
+  return *((const ekt_spi_t *)spi_location);
+}
+
+static inline uint32_t
+srtcp_packet_get_ekt_roc(const uint8_t *packet_start, unsigned pkt_octet_len) {
+  const uint8_t *roc_location;
+  
+  roc_location = packet_start + (pkt_octet_len - EKT_OCTETS_AFTER_ROC);
+  
+  return *((const uint32_t *)roc_location);
+}
+
+static inline const uint8_t *
+srtcp_packet_get_emk_location(const uint8_t *packet_start, 
+			      unsigned pkt_octet_len) {
+  const uint8_t *location;
+  
+  location = packet_start + (pkt_octet_len - EKT_OCTETS_AFTER_BASE_TAG);
+
+  return location;
+}
+
+
+err_status_t 
+ekt_alloc(ekt_stream_t *stream_data, ekt_policy_t policy) {
+
+  /*
+   * if the policy pointer is NULL, then EKT is not in use
+   * so we just set the EKT stream data pointer to NULL
+   */
+  if (!policy) {
+    *stream_data = NULL;
+    return err_status_ok;
+  }
+
+  /* TODO */
+  *stream_data = NULL;
+
+  return err_status_ok;
+}
+
+err_status_t
+ekt_stream_init_from_policy(ekt_stream_t stream_data, ekt_policy_t policy) {
+  if (!stream_data)
+    return err_status_ok;
+
+  return err_status_ok;
+}
+
+
+void
+aes_decrypt_with_raw_key(void *ciphertext, const void *key) {
+  aes_expanded_key_t expanded_key;
+
+  aes_expand_decryption_key(key, expanded_key);
+  aes_decrypt(ciphertext, expanded_key);
+}
+
+/*
+ * The function srtp_stream_init_from_ekt() initializes a stream using
+ * the EKT data from an SRTCP trailer.  
+ */
+
+err_status_t
+srtp_stream_init_from_ekt(srtp_stream_t stream,			  
+			  const void *srtcp_hdr,
+			  unsigned pkt_octet_len) {
+  err_status_t err;
+  const uint8_t *master_key;
+  srtp_policy_t srtp_policy;
+  unsigned master_key_len;
+  uint32_t roc;
+
+  /*
+   * NOTE: at present, we only support a single ekt_policy at a time.  
+   */
+  if (stream->ekt->data->spi != 
+      srtcp_packet_get_ekt_spi(srtcp_hdr, pkt_octet_len))
+    return err_status_no_ctx;
+
+  if (stream->ekt->data->ekt_cipher_type != EKT_CIPHER_AES_128_ECB)
+    return err_status_bad_param;
+  master_key_len = 16;
+
+  /* decrypt the Encrypted Master Key field */
+  master_key = srtcp_packet_get_emk_location(srtcp_hdr, pkt_octet_len);
+  aes_decrypt_with_raw_key((void*)master_key, stream->ekt->data->ekt_dec_key);
+
+  /* set the SRTP ROC */
+  roc = srtcp_packet_get_ekt_roc(srtcp_hdr, pkt_octet_len);
+  err = rdbx_set_roc(&stream->rtp_rdbx, roc);
+  if (err) return err;
+
+  err = srtp_stream_init(stream, &srtp_policy);
+  if (err) return err;
+
+  return err_status_ok;
+}
+
+void
+ekt_write_data(ekt_stream_t ekt,
+	       void *base_tag, 
+	       unsigned base_tag_len, 
+	       int *packet_len,
+	       xtd_seq_num_t pkt_index) {
+  uint32_t roc;
+  uint16_t isn;
+  unsigned emk_len;
+  uint8_t *packet;
+
+  /* if the pointer ekt is NULL, then EKT is not in effect */
+  if (!ekt) {
+    debug_print(mod_srtp, "EKT not in use", NULL);
+    return;
+  }
+
+  /* write zeros into the location of the base tag */
+  octet_string_set_to_zero(base_tag, base_tag_len);
+  packet = (uint8_t*)base_tag + base_tag_len;
+
+  /* copy encrypted master key into packet */
+  emk_len = ekt_octets_after_base_tag(ekt);
+  memcpy(packet, ekt->encrypted_master_key, emk_len);
+  debug_print(mod_srtp, "writing EKT EMK: %s,", 
+	      octet_string_hex_string(packet, emk_len));
+  packet += emk_len;
+
+  /* copy ROC into packet */
+  roc = (uint32_t)(pkt_index >> 16);
+  *((uint32_t *)packet) = be32_to_cpu(roc);
+  debug_print(mod_srtp, "writing EKT ROC: %s,", 
+	      octet_string_hex_string(packet, sizeof(roc)));
+  packet += sizeof(roc);
+
+  /* copy ISN into packet */
+  isn = (uint16_t)pkt_index;
+  *((uint16_t *)packet) = htons(isn);
+  debug_print(mod_srtp, "writing EKT ISN: %s,", 
+	      octet_string_hex_string(packet, sizeof(isn)));
+  packet += sizeof(isn);
+
+  /* copy SPI into packet */
+  *((uint16_t *)packet) = htons(ekt->data->spi);
+  debug_print(mod_srtp, "writing EKT SPI: %s,", 
+	      octet_string_hex_string(packet, sizeof(ekt->data->spi)));
+
+  /* increase packet length appropriately */
+  *packet_len += EKT_OCTETS_AFTER_EMK + emk_len;
+}
+
+
+/*
+ * The function call srtcp_ekt_trailer(ekt, auth_len, auth_tag   )
+ * 
+ * If the pointer ekt is NULL, then the other inputs are unaffected.
+ *
+ * auth_tag is a pointer to the pointer to the location of the
+ * authentication tag in the packet.  If EKT is in effect, then the
+ * auth_tag pointer is set to the location 
+ */
+
+void
+srtcp_ekt_trailer(ekt_stream_t ekt,
+		  unsigned *auth_len,
+		  void **auth_tag,
+		  void *tag_copy) {
+  
+  /* 
+   * if there is no EKT policy, then the other inputs are unaffected
+   */
+  if (!ekt) 
+    return;
+      
+  /* copy auth_tag into temporary location */
+  
+}
+
diff --git a/srtp/srtp.c b/srtp/srtp.c
new file mode 100644
index 0000000..314c3e4
--- /dev/null
+++ b/srtp/srtp.c
@@ -0,0 +1,1986 @@
+/*
+ * srtp.c
+ *
+ * the secure real-time transport protocol
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "srtp.h"
+#include "ekt.h"             /* for SRTP Encrypted Key Transport */
+#include "aes_icm.h"         /* aes_icm is used in the KDF  */
+#include "alloc.h"           /* for crypto_alloc()          */
+
+#ifndef SRTP_KERNEL
+# include <limits.h>
+# ifdef HAVE_NETINET_IN_H
+#  include <netinet/in.h>
+# elif defined(HAVE_WINSOCK2_H)
+#  include <winsock2.h>
+# endif
+#endif /* ! SRTP_KERNEL */
+
+
+extern cipher_type_t aes_icm;
+extern auth_type_t   tmmhv2;
+
+/* the debug module for srtp */
+
+debug_module_t mod_srtp = {
+  0,                  /* debugging is off by default */
+  "srtp"              /* printable name for module   */
+};
+
+#define octets_in_rtp_header   12
+#define uint32s_in_rtp_header  3
+#define octets_in_rtcp_header  8
+#define uint32s_in_rtcp_header 2
+
+
+err_status_t
+srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
+		  const srtp_policy_t *p) {
+  srtp_stream_ctx_t *str;
+  err_status_t stat;
+
+  /*
+   * This function allocates the stream context, rtp and rtcp ciphers
+   * and auth functions, and key limit structure.  If there is a
+   * failure during allocation, we free all previously allocated
+   * memory and return a failure code.  The code could probably 
+   * be improved, but it works and should be clear.
+   */
+
+  /* allocate srtp stream and set str_ptr */
+  str = (srtp_stream_ctx_t *) crypto_alloc(sizeof(srtp_stream_ctx_t));
+  if (str == NULL)
+    return err_status_alloc_fail;
+  *str_ptr = str;
+
+  /* allocate cipher */
+  stat = crypto_kernel_alloc_cipher(p->rtp.cipher_type, 
+				    &str->rtp_cipher, 
+				    p->rtp.cipher_key_len); 
+  if (stat) {
+    goto err_rtp_cipher_alloc;
+  }
+
+  /* allocate auth function */
+  stat = crypto_kernel_alloc_auth(p->rtp.auth_type, 
+				  &str->rtp_auth,
+				  p->rtp.auth_key_len, 
+				  p->rtp.auth_tag_len);
+
+  if (stat) {
+    goto err_rtp_auth_alloc;
+  }
+
+  /* allocate key limit structure */
+  str->limit = (key_limit_ctx_t*) crypto_alloc(sizeof(key_limit_ctx_t));
+  if (str->limit == NULL) {
+    stat = err_status_alloc_fail;
+    goto err_limit_alloc;
+  }
+
+  /*
+   * ...and now the RTCP-specific initialization - first, allocate
+   * the cipher 
+   */
+  stat = crypto_kernel_alloc_cipher(p->rtcp.cipher_type, 
+				    &str->rtcp_cipher, 
+				    p->rtcp.cipher_key_len);
+  if (stat) {
+    goto err_rtcp_cipher_alloc;
+  }
+
+  /* allocate auth function */
+  stat = crypto_kernel_alloc_auth(p->rtcp.auth_type, 
+				  &str->rtcp_auth,
+				  p->rtcp.auth_key_len, 
+				  p->rtcp.auth_tag_len); 
+  if (stat) {
+    goto err_rtcp_auth_alloc;
+  }
+
+  /* allocate ekt data associated with stream */
+  stat = ekt_alloc(&str->ekt, p->ekt);
+  if (stat) {
+    goto err_ekt_alloc;
+  }
+
+  return err_status_ok;
+
+err_ekt_alloc:
+  auth_dealloc(str->rtcp_auth);
+err_rtcp_auth_alloc:
+  cipher_dealloc(str->rtcp_cipher);
+err_rtcp_cipher_alloc:
+  crypto_free(str->limit);
+err_limit_alloc:
+  auth_dealloc(str->rtp_auth);
+err_rtp_auth_alloc:
+  cipher_dealloc(str->rtp_cipher);
+err_rtp_cipher_alloc:
+  crypto_free(str);
+  return stat;
+}
+
+err_status_t
+srtp_stream_dealloc(srtp_stream_ctx_t *stream,
+                    srtp_stream_ctx_t *stream_template) {
+  err_status_t status;
+
+  /*
+   * we use a conservative deallocation strategy - if any deallocation
+   * fails, then we report that fact without trying to deallocate
+   * anything else
+   */
+
+  /* deallocate cipher, if it is not the same as that in template */
+  if (!stream_template || stream->rtp_cipher != stream_template->rtp_cipher) {
+    status = cipher_dealloc(stream->rtp_cipher); 
+    if (status) 
+      return status;
+  }
+
+  /* deallocate auth function, if it is not the same as that in template */
+  if (!stream_template || stream->rtp_auth != stream_template->rtp_auth) {
+    status = auth_dealloc(stream->rtp_auth);
+    if (status)
+      return status;
+  }
+
+  /* deallocate key usage limit, if it is not the same as that in template */
+  if (!stream_template || stream->limit != stream_template->limit) {
+    crypto_free(stream->limit);
+  }
+
+  /*
+   * deallocate rtcp cipher, if it is not the same as that in
+   * template
+   */
+  if (!stream_template || stream->rtcp_cipher != stream_template->rtcp_cipher) {
+    status = cipher_dealloc(stream->rtcp_cipher); 
+    if (status) 
+      return status;
+  }
+
+  /*
+   * deallocate rtcp auth function, if it is not the same as that in
+   * template 
+   */
+  if (!stream_template || stream->rtcp_auth != stream_template->rtcp_auth) {
+    status = auth_dealloc(stream->rtcp_auth);
+    if (status)
+      return status;
+  }
+
+  /* DAM - need to deallocate EKT here */
+
+  /* deallocate srtp stream context */
+  crypto_free(stream);
+
+  return err_status_ok;
+}
+
+
+/*
+ * srtp_stream_clone(stream_template, new) allocates a new stream and
+ * initializes it using the cipher and auth of the stream_template
+ * 
+ * the only unique data in a cloned stream is the replay database and
+ * the SSRC
+ */
+
+err_status_t
+srtp_stream_clone(const srtp_stream_ctx_t *stream_template, 
+		  uint32_t ssrc, 
+		  srtp_stream_ctx_t **str_ptr) {
+  err_status_t status;
+  srtp_stream_ctx_t *str;
+
+  debug_print(mod_srtp, "cloning stream (SSRC: 0x%08x)", ssrc);
+
+  /* allocate srtp stream and set str_ptr */
+  str = (srtp_stream_ctx_t *) crypto_alloc(sizeof(srtp_stream_ctx_t));
+  if (str == NULL)
+    return err_status_alloc_fail;
+  *str_ptr = str;  
+
+  /* set cipher and auth pointers to those of the template */
+  str->rtp_cipher  = stream_template->rtp_cipher;
+  str->rtp_auth    = stream_template->rtp_auth;
+  str->rtcp_cipher = stream_template->rtcp_cipher;
+  str->rtcp_auth   = stream_template->rtcp_auth;
+
+  /* set key limit to point to that of the template */
+  status = key_limit_clone(stream_template->limit, &str->limit);
+  if (status) 
+    return status;
+
+  /* initialize replay databases */
+  status = rdbx_init(&str->rtp_rdbx,
+		     rdbx_get_window_size(&stream_template->rtp_rdbx));
+  if (status)
+    return status;
+  rdb_init(&str->rtcp_rdb);
+  str->allow_repeat_tx = stream_template->allow_repeat_tx;
+  
+  /* set ssrc to that provided */
+  str->ssrc = ssrc;
+
+  /* set direction and security services */
+  str->direction     = stream_template->direction;
+  str->rtp_services  = stream_template->rtp_services;
+  str->rtcp_services = stream_template->rtcp_services;
+
+  /* set pointer to EKT data associated with stream */
+  str->ekt = stream_template->ekt;
+
+  /* defensive coding */
+  str->next = NULL;
+
+  return err_status_ok;
+}
+
+
+/*
+ * key derivation functions, internal to libSRTP
+ *
+ * srtp_kdf_t is a key derivation context
+ *
+ * srtp_kdf_init(&kdf, k) initializes kdf with the key k
+ * 
+ * srtp_kdf_generate(&kdf, l, kl, keylen) derives the key
+ * corresponding to label l and puts it into kl; the length
+ * of the key in octets is provided as keylen.  this function
+ * should be called once for each subkey that is derived.
+ *
+ * srtp_kdf_clear(&kdf) zeroizes the kdf state
+ */
+
+typedef enum {
+  label_rtp_encryption  = 0x00,
+  label_rtp_msg_auth    = 0x01,
+  label_rtp_salt        = 0x02,
+  label_rtcp_encryption = 0x03,
+  label_rtcp_msg_auth   = 0x04,
+  label_rtcp_salt       = 0x05
+} srtp_prf_label;
+
+
+/*
+ * srtp_kdf_t represents a key derivation function.  The SRTP
+ * default KDF is the only one implemented at present.
+ */
+
+typedef struct { 
+  aes_icm_ctx_t c;    /* cipher used for key derivation  */  
+} srtp_kdf_t;
+
+err_status_t
+srtp_kdf_init(srtp_kdf_t *kdf, const uint8_t key[30]) {
+
+  aes_icm_context_init(&kdf->c, key);
+
+  return err_status_ok;
+}
+
+err_status_t
+srtp_kdf_generate(srtp_kdf_t *kdf, srtp_prf_label label,
+		  uint8_t *key, int length) {
+
+  v128_t nonce;
+  
+  /* set eigth octet of nonce to <label>, set the rest of it to zero */
+  v128_set_to_zero(&nonce);
+  nonce.v8[7] = label;
+ 
+  aes_icm_set_iv(&kdf->c, &nonce);  
+  
+  /* generate keystream output */
+  aes_icm_output(&kdf->c, key, length);
+
+  return err_status_ok;
+}
+
+err_status_t
+srtp_kdf_clear(srtp_kdf_t *kdf) {
+  
+  /* zeroize aes context */
+  octet_string_set_to_zero((uint8_t *)kdf, sizeof(srtp_kdf_t));
+
+  return err_status_ok;  
+}
+
+/*
+ *  end of key derivation functions 
+ */
+
+#define MAX_SRTP_KEY_LEN 256
+
+
+err_status_t
+srtp_stream_init_keys(srtp_stream_ctx_t *srtp, const void *key) {
+  err_status_t stat;
+  srtp_kdf_t kdf;
+  uint8_t tmp_key[MAX_SRTP_KEY_LEN];
+  
+  /* initialize KDF state     */
+  srtp_kdf_init(&kdf, (const uint8_t *)key);
+  
+  /* generate encryption key  */
+  srtp_kdf_generate(&kdf, label_rtp_encryption, 
+		    tmp_key, cipher_get_key_length(srtp->rtp_cipher));
+  /* 
+   * if the cipher in the srtp context is aes_icm, then we need
+   * to generate the salt value
+   */
+  if (srtp->rtp_cipher->type == &aes_icm) {
+    /* FIX!!! this is really the cipher key length; rest is salt */
+    int base_key_len = 16;
+    int salt_len = cipher_get_key_length(srtp->rtp_cipher) - base_key_len;
+    
+    debug_print(mod_srtp, "found aes_icm, generating salt", NULL);
+
+    /* generate encryption salt, put after encryption key */
+    srtp_kdf_generate(&kdf, label_rtp_salt, 
+		      tmp_key + base_key_len, salt_len);
+  }
+  debug_print(mod_srtp, "cipher key: %s", 
+	      octet_string_hex_string(tmp_key, 
+		      cipher_get_key_length(srtp->rtp_cipher)));  
+
+  /* initialize cipher */
+  stat = cipher_init(srtp->rtp_cipher, tmp_key, direction_any);
+  if (stat) {
+    /* zeroize temp buffer */
+    octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN);
+    return err_status_init_fail;
+  }
+
+  /* generate authentication key */
+  srtp_kdf_generate(&kdf, label_rtp_msg_auth,
+		    tmp_key, auth_get_key_length(srtp->rtp_auth));
+  debug_print(mod_srtp, "auth key:   %s",
+	      octet_string_hex_string(tmp_key, 
+				      auth_get_key_length(srtp->rtp_auth))); 
+
+  /* initialize auth function */
+  stat = auth_init(srtp->rtp_auth, tmp_key);
+  if (stat) {
+    /* zeroize temp buffer */
+    octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN);
+    return err_status_init_fail;
+  }
+
+  /*
+   * ...now initialize SRTCP keys
+   */
+
+  /* generate encryption key  */
+  srtp_kdf_generate(&kdf, label_rtcp_encryption, 
+		    tmp_key, cipher_get_key_length(srtp->rtcp_cipher));
+  /* 
+   * if the cipher in the srtp context is aes_icm, then we need
+   * to generate the salt value
+   */
+  if (srtp->rtcp_cipher->type == &aes_icm) {
+    /* FIX!!! this is really the cipher key length; rest is salt */
+    int base_key_len = 16;
+    int salt_len = cipher_get_key_length(srtp->rtcp_cipher) - base_key_len;
+
+    debug_print(mod_srtp, "found aes_icm, generating rtcp salt", NULL);
+
+    /* generate encryption salt, put after encryption key */
+    srtp_kdf_generate(&kdf, label_rtcp_salt, 
+		      tmp_key + base_key_len, salt_len);
+  }
+  debug_print(mod_srtp, "rtcp cipher key: %s", 
+	      octet_string_hex_string(tmp_key, 
+		   cipher_get_key_length(srtp->rtcp_cipher)));  
+
+  /* initialize cipher */
+  stat = cipher_init(srtp->rtcp_cipher, tmp_key, direction_any);
+  if (stat) {
+    /* zeroize temp buffer */
+    octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN);
+    return err_status_init_fail;
+  }
+
+  /* generate authentication key */
+  srtp_kdf_generate(&kdf, label_rtcp_msg_auth,
+		    tmp_key, auth_get_key_length(srtp->rtcp_auth));
+  debug_print(mod_srtp, "rtcp auth key:   %s",
+	      octet_string_hex_string(tmp_key, 
+		     auth_get_key_length(srtp->rtcp_auth))); 
+
+  /* initialize auth function */
+  stat = auth_init(srtp->rtcp_auth, tmp_key);
+  if (stat) {
+    /* zeroize temp buffer */
+    octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN);
+    return err_status_init_fail;
+  }
+
+  /* clear memory then return */
+  srtp_kdf_clear(&kdf);
+  octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN);  
+
+  return err_status_ok;
+}
+
+err_status_t
+srtp_stream_init(srtp_stream_ctx_t *srtp, 
+		  const srtp_policy_t *p) {
+  err_status_t err;
+
+   debug_print(mod_srtp, "initializing stream (SSRC: 0x%08x)", 
+	       p->ssrc.value);
+
+   /* initialize replay database */
+   err = rdbx_init(&srtp->rtp_rdbx, p->window_size);
+   if (err) return err;
+
+   /* initialize key limit to maximum value */
+#ifdef NO_64BIT_MATH
+{
+   uint64_t temp;
+   temp = make64(UINT_MAX,UINT_MAX);
+   key_limit_set(srtp->limit, temp);
+}
+#else
+   key_limit_set(srtp->limit, 0xffffffffffffLL);
+#endif
+
+   /* set the SSRC value */
+   srtp->ssrc = htonl(p->ssrc.value);
+
+   /* set the security service flags */
+   srtp->rtp_services  = p->rtp.sec_serv;
+   srtp->rtcp_services = p->rtcp.sec_serv;
+
+   /*
+    * set direction to unknown - this flag gets checked in srtp_protect(),
+    * srtp_unprotect(), srtp_protect_rtcp(), and srtp_unprotect_rtcp(), and 
+    * gets set appropriately if it is set to unknown.
+    */
+   srtp->direction = dir_unknown;
+
+   /* initialize SRTCP replay database */
+   rdb_init(&srtp->rtcp_rdb);
+
+   /* initialize allow_repeat_tx */
+   srtp->allow_repeat_tx = p->allow_repeat_tx;
+
+   /* DAM - no RTCP key limit at present */
+
+   /* initialize keys */
+   err = srtp_stream_init_keys(srtp, p->key);
+   if (err) {
+     rdbx_uninit(&srtp->rtp_rdbx);
+     return err;
+   }
+
+   /* 
+    * if EKT is in use, then initialize the EKT data associated with
+    * the stream
+    */
+   err = ekt_stream_init_from_policy(srtp->ekt, p->ekt);
+   if (err) {
+     rdbx_uninit(&srtp->rtp_rdbx);
+     return err;
+   }
+
+   return err_status_ok;  
+}
+
+err_status_t
+srtp_stream_uninit(srtp_stream_ctx_t *srtp) {
+  return rdbx_uninit(&srtp->rtp_rdbx);
+}
+
+
+ /*
+  * srtp_event_reporter is an event handler function that merely
+  * reports the events that are reported by the callbacks
+  */
+
+ void
+ srtp_event_reporter(srtp_event_data_t *data) {
+
+   err_report(err_level_warning, "srtp: in stream 0x%x: ", 
+	      data->stream->ssrc);
+
+   switch(data->event) {
+   case event_ssrc_collision:
+     err_report(err_level_warning, "\tSSRC collision\n");
+     break;
+   case event_key_soft_limit:
+     err_report(err_level_warning, "\tkey usage soft limit reached\n");
+     break;
+   case event_key_hard_limit:
+     err_report(err_level_warning, "\tkey usage hard limit reached\n");
+     break;
+   case event_packet_index_limit:
+     err_report(err_level_warning, "\tpacket index limit reached\n");
+     break;
+   default:
+     err_report(err_level_warning, "\tunknown event reported to handler\n");
+   }
+ }
+
+ /*
+  * srtp_event_handler is a global variable holding a pointer to the
+  * event handler function; this function is called for any unexpected
+  * event that needs to be handled out of the SRTP data path.  see
+  * srtp_event_t in srtp.h for more info
+  *
+  * it is okay to set srtp_event_handler to NULL, but we set 
+  * it to the srtp_event_reporter.
+  */
+
+ static srtp_event_handler_func_t *srtp_event_handler = srtp_event_reporter;
+
+ err_status_t
+ srtp_install_event_handler(srtp_event_handler_func_t func) {
+
+   /* 
+    * note that we accept NULL arguments intentionally - calling this
+    * function with a NULL arguments removes an event handler that's
+    * been previously installed
+    */
+
+   /* set global event handling function */
+   srtp_event_handler = func;
+   return err_status_ok;
+ }
+
+ err_status_t
+ srtp_protect(srtp_ctx_t *ctx, void *rtp_hdr, int *pkt_octet_len) {
+   srtp_hdr_t *hdr = (srtp_hdr_t *)rtp_hdr;
+   uint32_t *enc_start;        /* pointer to start of encrypted portion  */
+   uint32_t *auth_start;       /* pointer to start of auth. portion      */
+   unsigned enc_octet_len = 0; /* number of octets in encrypted portion  */
+   xtd_seq_num_t est;          /* estimated xtd_seq_num_t of *hdr        */
+   int delta;                  /* delta of local pkt idx and that in hdr */
+   uint8_t *auth_tag = NULL;   /* location of auth_tag within packet     */
+   err_status_t status;   
+   int tag_len;
+   srtp_stream_ctx_t *stream;
+   int prefix_len;
+
+   debug_print(mod_srtp, "function srtp_protect", NULL);
+
+  /* we assume the hdr is 32-bit aligned to start */
+
+   /* check the packet length - it must at least contain a full header */
+   if (*pkt_octet_len < octets_in_rtp_header)
+     return err_status_bad_param;
+
+   /*
+    * look up ssrc in srtp_stream list, and process the packet with
+    * the appropriate stream.  if we haven't seen this stream before,
+    * there's a template key for this srtp_session, and the cipher
+    * supports key-sharing, then we assume that a new stream using
+    * that key has just started up
+    */
+   stream = srtp_get_stream(ctx, hdr->ssrc);
+   if (stream == NULL) {
+     if (ctx->stream_template != NULL) {
+       srtp_stream_ctx_t *new_stream;
+
+       /* allocate and initialize a new stream */
+       status = srtp_stream_clone(ctx->stream_template, 
+				  hdr->ssrc, &new_stream); 
+       if (status)
+	 return status;
+
+       /* add new stream to the head of the stream_list */
+       new_stream->next = ctx->stream_list;
+       ctx->stream_list = new_stream;
+
+       /* set direction to outbound */
+       new_stream->direction = dir_srtp_sender;
+
+       /* set stream (the pointer used in this function) */
+       stream = new_stream;
+     } else {
+       /* no template stream, so we return an error */
+       return err_status_no_ctx;
+     } 
+   }
+
+   /* 
+    * verify that stream is for sending traffic - this check will
+    * detect SSRC collisions, since a stream that appears in both
+    * srtp_protect() and srtp_unprotect() will fail this test in one of
+    * those functions.
+    */
+   if (stream->direction != dir_srtp_sender) {
+     if (stream->direction == dir_unknown) {
+       stream->direction = dir_srtp_sender;
+     } else {
+       srtp_handle_event(ctx, stream, event_ssrc_collision);
+     }
+   }
+
+  /* 
+   * update the key usage limit, and check it to make sure that we
+   * didn't just hit either the soft limit or the hard limit, and call
+   * the event handler if we hit either.
+   */
+  switch(key_limit_update(stream->limit)) {
+  case key_event_normal:
+    break;
+  case key_event_soft_limit: 
+    srtp_handle_event(ctx, stream, event_key_soft_limit);
+    break; 
+  case key_event_hard_limit:
+    srtp_handle_event(ctx, stream, event_key_hard_limit);
+	return err_status_key_expired;
+  default:
+    break;
+  }
+
+   /* get tag length from stream */
+   tag_len = auth_get_tag_length(stream->rtp_auth); 
+
+   /*
+    * find starting point for encryption and length of data to be
+    * encrypted - the encrypted portion starts after the rtp header
+    * extension, if present; otherwise, it starts after the last csrc,
+    * if any are present
+    *
+    * if we're not providing confidentiality, set enc_start to NULL
+    */
+   if (stream->rtp_services & sec_serv_conf) {
+     enc_start = (uint32_t *)hdr + uint32s_in_rtp_header + hdr->cc;  
+     if (hdr->x == 1) {
+       srtp_hdr_xtnd_t *xtn_hdr = (srtp_hdr_xtnd_t *)enc_start;
+       enc_start += (ntohs(xtn_hdr->length) + 1);
+     }
+     enc_octet_len = (unsigned int)(*pkt_octet_len 
+				    - ((enc_start - (uint32_t *)hdr) << 2));
+   } else {
+     enc_start = NULL;
+   }
+
+   /* 
+    * if we're providing authentication, set the auth_start and auth_tag
+    * pointers to the proper locations; otherwise, set auth_start to NULL
+    * to indicate that no authentication is needed
+    */
+   if (stream->rtp_services & sec_serv_auth) {
+     auth_start = (uint32_t *)hdr;
+     auth_tag = (uint8_t *)hdr + *pkt_octet_len;
+   } else {
+     auth_start = NULL;
+     auth_tag = NULL;
+   }
+
+   /*
+    * estimate the packet index using the start of the replay window   
+    * and the sequence number from the header
+    */
+   delta = rdbx_estimate_index(&stream->rtp_rdbx, &est, ntohs(hdr->seq));
+   status = rdbx_check(&stream->rtp_rdbx, delta);
+   if (status) {
+     if (status != err_status_replay_fail || !stream->allow_repeat_tx)
+       return status;  /* we've been asked to reuse an index */
+   }
+   else
+     rdbx_add_index(&stream->rtp_rdbx, delta);
+
+#ifdef NO_64BIT_MATH
+   debug_print2(mod_srtp, "estimated packet index: %08x%08x", 
+		high32(est),low32(est));
+#else
+   debug_print(mod_srtp, "estimated packet index: %016llx", est);
+#endif
+
+   /* 
+    * if we're using rindael counter mode, set nonce and seq 
+    */
+   if (stream->rtp_cipher->type == &aes_icm) {
+     v128_t iv;
+
+     iv.v32[0] = 0;
+     iv.v32[1] = hdr->ssrc;
+#ifdef NO_64BIT_MATH
+     iv.v64[1] = be64_to_cpu(make64((high32(est) << 16) | (low32(est) >> 16),
+								 low32(est) << 16));
+#else
+     iv.v64[1] = be64_to_cpu(est << 16);
+#endif
+     status = cipher_set_iv(stream->rtp_cipher, &iv);
+
+   } else {  
+     v128_t iv;
+
+     /* otherwise, set the index to est */  
+#ifdef NO_64BIT_MATH
+     iv.v32[0] = 0;
+     iv.v32[1] = 0;
+#else
+     iv.v64[0] = 0;
+#endif
+     iv.v64[1] = be64_to_cpu(est);
+     status = cipher_set_iv(stream->rtp_cipher, &iv);
+   }
+   if (status)
+     return err_status_cipher_fail;
+
+   /* shift est, put into network byte order */
+#ifdef NO_64BIT_MATH
+   est = be64_to_cpu(make64((high32(est) << 16) |
+						 (low32(est) >> 16),
+						 low32(est) << 16));
+#else
+   est = be64_to_cpu(est << 16);
+#endif
+   
+   /* 
+    * if we're authenticating using a universal hash, put the keystream
+    * prefix into the authentication tag
+    */
+   if (auth_start) {
+     
+    prefix_len = auth_get_prefix_length(stream->rtp_auth);    
+    if (prefix_len) {
+      status = cipher_output(stream->rtp_cipher, auth_tag, prefix_len);
+      if (status)
+	return err_status_cipher_fail;
+      debug_print(mod_srtp, "keystream prefix: %s", 
+		  octet_string_hex_string(auth_tag, prefix_len));
+    }
+  }
+
+  /* if we're encrypting, exor keystream into the message */
+  if (enc_start) {
+    status = cipher_encrypt(stream->rtp_cipher, 
+			    (uint8_t *)enc_start, &enc_octet_len);
+    if (status)
+      return err_status_cipher_fail;
+  }
+
+  /*
+   *  if we're authenticating, run authentication function and put result
+   *  into the auth_tag 
+   */
+  if (auth_start) {        
+
+    /* initialize auth func context */
+    status = auth_start(stream->rtp_auth);
+    if (status) return status;
+
+    /* run auth func over packet */
+    status = auth_update(stream->rtp_auth, 
+			 (uint8_t *)auth_start, *pkt_octet_len);
+    if (status) return status;
+    
+    /* run auth func over ROC, put result into auth_tag */
+    debug_print(mod_srtp, "estimated packet index: %016llx", est);
+    status = auth_compute(stream->rtp_auth, (uint8_t *)&est, 4, auth_tag); 
+    debug_print(mod_srtp, "srtp auth tag:    %s", 
+		octet_string_hex_string(auth_tag, tag_len));
+    if (status)
+      return err_status_auth_fail;   
+
+  }
+
+  if (auth_tag) {
+
+    /* increase the packet length by the length of the auth tag */
+    *pkt_octet_len += tag_len;
+  }
+
+  return err_status_ok;  
+}
+
+
+err_status_t
+srtp_unprotect(srtp_ctx_t *ctx, void *srtp_hdr, int *pkt_octet_len) {
+  srtp_hdr_t *hdr = (srtp_hdr_t *)srtp_hdr;
+  uint32_t *enc_start;      /* pointer to start of encrypted portion  */
+  uint32_t *auth_start;     /* pointer to start of auth. portion      */
+  unsigned enc_octet_len = 0;/* number of octets in encrypted portion */
+  uint8_t *auth_tag = NULL; /* location of auth_tag within packet     */
+  xtd_seq_num_t est;        /* estimated xtd_seq_num_t of *hdr        */
+  int delta;                /* delta of local pkt idx and that in hdr */
+  v128_t iv;
+  err_status_t status;
+  srtp_stream_ctx_t *stream;
+  uint8_t tmp_tag[SRTP_MAX_TAG_LEN];
+  int tag_len, prefix_len;
+
+  debug_print(mod_srtp, "function srtp_unprotect", NULL);
+
+  /* we assume the hdr is 32-bit aligned to start */
+
+  /* check the packet length - it must at least contain a full header */
+  if (*pkt_octet_len < octets_in_rtp_header)
+    return err_status_bad_param;
+
+  /*
+   * look up ssrc in srtp_stream list, and process the packet with 
+   * the appropriate stream.  if we haven't seen this stream before,
+   * there's only one key for this srtp_session, and the cipher
+   * supports key-sharing, then we assume that a new stream using
+   * that key has just started up
+   */
+  stream = srtp_get_stream(ctx, hdr->ssrc);
+  if (stream == NULL) {
+    if (ctx->stream_template != NULL) {
+      stream = ctx->stream_template;
+      debug_print(mod_srtp, "using provisional stream (SSRC: 0x%08x)",
+		  hdr->ssrc);
+      
+      /* 
+       * set estimated packet index to sequence number from header,
+       * and set delta equal to the same value
+       */
+#ifdef NO_64BIT_MATH
+      est = (xtd_seq_num_t) make64(0,ntohs(hdr->seq));
+      delta = low32(est);
+#else
+      est = (xtd_seq_num_t) ntohs(hdr->seq);
+      delta = (int)est;
+#endif
+    } else {
+      
+      /*
+       * no stream corresponding to SSRC found, and we don't do
+       * key-sharing, so return an error
+       */
+      return err_status_no_ctx;
+    }
+  } else {
+  
+    /* estimate packet index from seq. num. in header */
+    delta = rdbx_estimate_index(&stream->rtp_rdbx, &est, ntohs(hdr->seq));
+    
+    /* check replay database */
+    status = rdbx_check(&stream->rtp_rdbx, delta);
+    if (status)
+      return status;
+  }
+
+#ifdef NO_64BIT_MATH
+  debug_print2(mod_srtp, "estimated u_packet index: %08x%08x", high32(est),low32(est));
+#else
+  debug_print(mod_srtp, "estimated u_packet index: %016llx", est);
+#endif
+
+  /* get tag length from stream */
+  tag_len = auth_get_tag_length(stream->rtp_auth); 
+
+  /* 
+   * set the cipher's IV properly, depending on whatever cipher we
+   * happen to be using
+   */
+  if (stream->rtp_cipher->type == &aes_icm) {
+
+    /* aes counter mode */
+    iv.v32[0] = 0;
+    iv.v32[1] = hdr->ssrc;  /* still in network order */
+#ifdef NO_64BIT_MATH
+    iv.v64[1] = be64_to_cpu(make64((high32(est) << 16) | (low32(est) >> 16),
+			         low32(est) << 16));
+#else
+    iv.v64[1] = be64_to_cpu(est << 16);
+#endif
+    status = aes_icm_set_iv((aes_icm_ctx_t*)stream->rtp_cipher->state, &iv);
+  } else {  
+    
+    /* no particular format - set the iv to the pakcet index */  
+#ifdef NO_64BIT_MATH
+    iv.v32[0] = 0;
+    iv.v32[1] = 0;
+#else
+    iv.v64[0] = 0;
+#endif
+    iv.v64[1] = be64_to_cpu(est);
+    status = cipher_set_iv(stream->rtp_cipher, &iv);
+  }
+  if (status)
+    return err_status_cipher_fail;
+
+  /* shift est, put into network byte order */
+#ifdef NO_64BIT_MATH
+  est = be64_to_cpu(make64((high32(est) << 16) |
+					    (low32(est) >> 16),
+					    low32(est) << 16));
+#else
+  est = be64_to_cpu(est << 16);
+#endif
+
+  /*
+   * find starting point for decryption and length of data to be
+   * decrypted - the encrypted portion starts after the rtp header
+   * extension, if present; otherwise, it starts after the last csrc,
+   * if any are present
+   *
+   * if we're not providing confidentiality, set enc_start to NULL
+   */
+  if (stream->rtp_services & sec_serv_conf) {
+    enc_start = (uint32_t *)hdr + uint32s_in_rtp_header + hdr->cc;  
+    if (hdr->x == 1) {
+      srtp_hdr_xtnd_t *xtn_hdr = (srtp_hdr_xtnd_t *)enc_start;
+      enc_start += (ntohs(xtn_hdr->length) + 1);
+    }  
+    enc_octet_len = (uint32_t)(*pkt_octet_len - tag_len 
+			       - ((enc_start - (uint32_t *)hdr) << 2));
+  } else {
+    enc_start = NULL;
+  }
+
+  /* 
+   * if we're providing authentication, set the auth_start and auth_tag
+   * pointers to the proper locations; otherwise, set auth_start to NULL
+   * to indicate that no authentication is needed
+   */
+  if (stream->rtp_services & sec_serv_auth) {
+    auth_start = (uint32_t *)hdr;
+    auth_tag = (uint8_t *)hdr + *pkt_octet_len - tag_len;
+  } else {
+    auth_start = NULL;
+    auth_tag = NULL;
+  } 
+
+  /*
+   * if we expect message authentication, run the authentication
+   * function and compare the result with the value of the auth_tag
+   */
+  if (auth_start) {        
+
+    /* 
+     * if we're using a universal hash, then we need to compute the
+     * keystream prefix for encrypting the universal hash output
+     *
+     * if the keystream prefix length is zero, then we know that
+     * the authenticator isn't using a universal hash function
+     */  
+    if (stream->rtp_auth->prefix_len != 0) {
+      
+      prefix_len = auth_get_prefix_length(stream->rtp_auth);    
+      status = cipher_output(stream->rtp_cipher, tmp_tag, prefix_len);
+      debug_print(mod_srtp, "keystream prefix: %s", 
+		  octet_string_hex_string(tmp_tag, prefix_len));
+      if (status)
+	return err_status_cipher_fail;
+    } 
+
+    /* initialize auth func context */
+    status = auth_start(stream->rtp_auth);
+    if (status) return status;
+ 
+    /* now compute auth function over packet */
+    status = auth_update(stream->rtp_auth, (uint8_t *)auth_start,  
+			 *pkt_octet_len - tag_len);
+
+    /* run auth func over ROC, then write tmp tag */
+    status = auth_compute(stream->rtp_auth, (uint8_t *)&est, 4, tmp_tag);  
+
+    debug_print(mod_srtp, "computed auth tag:    %s", 
+		octet_string_hex_string(tmp_tag, tag_len));
+    debug_print(mod_srtp, "packet auth tag:      %s", 
+		octet_string_hex_string(auth_tag, tag_len));
+    if (status)
+      return err_status_auth_fail;   
+
+    if (octet_string_is_eq(tmp_tag, auth_tag, tag_len))
+      return err_status_auth_fail;
+  }
+
+  /* 
+   * update the key usage limit, and check it to make sure that we
+   * didn't just hit either the soft limit or the hard limit, and call
+   * the event handler if we hit either.
+   */
+  switch(key_limit_update(stream->limit)) {
+  case key_event_normal:
+    break;
+  case key_event_soft_limit: 
+    srtp_handle_event(ctx, stream, event_key_soft_limit);
+    break; 
+  case key_event_hard_limit:
+    srtp_handle_event(ctx, stream, event_key_hard_limit);
+    return err_status_key_expired;
+  default:
+    break;
+  }
+
+  /* if we're encrypting, add keystream into ciphertext */
+  if (enc_start) {
+    status = cipher_encrypt(stream->rtp_cipher, 
+			    (uint8_t *)enc_start, &enc_octet_len);
+    if (status)
+      return err_status_cipher_fail;
+  }
+
+  /* 
+   * verify that stream is for received traffic - this check will
+   * detect SSRC collisions, since a stream that appears in both
+   * srtp_protect() and srtp_unprotect() will fail this test in one of
+   * those functions.
+   *
+   * we do this check *after* the authentication check, so that the
+   * latter check will catch any attempts to fool us into thinking
+   * that we've got a collision
+   */
+  if (stream->direction != dir_srtp_receiver) {
+    if (stream->direction == dir_unknown) {
+      stream->direction = dir_srtp_receiver;
+    } else {
+      srtp_handle_event(ctx, stream, event_ssrc_collision);
+    }
+  }
+
+  /* 
+   * if the stream is a 'provisional' one, in which the template context
+   * is used, then we need to allocate a new stream at this point, since
+   * the authentication passed
+   */
+  if (stream == ctx->stream_template) {  
+    srtp_stream_ctx_t *new_stream;
+
+    /* 
+     * allocate and initialize a new stream 
+     * 
+     * note that we indicate failure if we can't allocate the new
+     * stream, and some implementations will want to not return
+     * failure here
+     */
+    status = srtp_stream_clone(ctx->stream_template, hdr->ssrc, &new_stream); 
+    if (status)
+      return status;
+    
+    /* add new stream to the head of the stream_list */
+    new_stream->next = ctx->stream_list;
+    ctx->stream_list = new_stream;
+    
+    /* set stream (the pointer used in this function) */
+    stream = new_stream;
+  }
+  
+  /* 
+   * the message authentication function passed, so add the packet
+   * index into the replay database 
+   */
+  rdbx_add_index(&stream->rtp_rdbx, delta);
+
+  /* decrease the packet length by the length of the auth tag */
+  *pkt_octet_len -= tag_len;
+
+  return err_status_ok;  
+}
+
+err_status_t
+srtp_init() {
+  err_status_t status;
+
+  /* initialize crypto kernel */
+  status = crypto_kernel_init();
+  if (status) 
+    return status;
+
+  /* load srtp debug module into the kernel */
+  status = crypto_kernel_load_debug_module(&mod_srtp);
+  if (status)
+    return status;
+
+  return err_status_ok;
+}
+
+/* 
+ * The following code is under consideration for removal.  See
+ * SRTP_MAX_TRAILER_LEN 
+ */
+#if 0
+
+/*
+ * srtp_get_trailer_length(&a) returns the number of octets that will
+ * be added to an RTP packet by the SRTP processing.  This value
+ * is constant for a given srtp_stream_t (i.e. between initializations).
+ */
+
+int
+srtp_get_trailer_length(const srtp_stream_t s) {
+  return auth_get_tag_length(s->rtp_auth);
+}
+
+#endif
+
+/*
+ * srtp_get_stream(ssrc) returns a pointer to the stream corresponding
+ * to ssrc, or NULL if no stream exists for that ssrc
+ *
+ * this is an internal function 
+ */
+
+srtp_stream_ctx_t *
+srtp_get_stream(srtp_t srtp, uint32_t ssrc) {
+  srtp_stream_ctx_t *stream;
+
+  /* walk down list until ssrc is found */
+  stream = srtp->stream_list;
+  while (stream != NULL) {
+    if (stream->ssrc == ssrc)
+      return stream;
+    stream = stream->next;
+  }
+  
+  /* we haven't found our ssrc, so return a null */
+  return NULL;
+}
+
+err_status_t
+srtp_dealloc(srtp_t session) {
+  srtp_stream_ctx_t *stream;
+  err_status_t status;
+
+  /*
+   * we take a conservative deallocation strategy - if we encounter an
+   * error deallocating a stream, then we stop trying to deallocate
+   * memory and just return an error
+   */
+
+  /* walk list of streams, deallocating as we go */
+  stream = session->stream_list;
+  while (stream != NULL) {
+    srtp_stream_t next = stream->next;
+    status = srtp_stream_uninit_and_dealloc(stream, session->stream_template);
+    if (status) {
+      return status;
+    }
+    stream = next;
+  }
+
+  /* deallocate stream template, if there is one */
+  if (session->stream_template != NULL) {
+    status = srtp_stream_uninit_and_dealloc(session->stream_template, NULL);
+  }
+
+  /* deallocate session context */
+  crypto_free(session);
+
+  return err_status_ok;
+}
+
+
+err_status_t
+srtp_add_stream(srtp_t session, 
+		const srtp_policy_t *policy)  {
+  err_status_t status;
+  srtp_stream_t tmp;
+
+  /* sanity check arguments */
+  if ((session == NULL) || (policy == NULL) || (policy->key == NULL))
+    return err_status_bad_param;
+
+  /* allocate stream  */
+  status = srtp_stream_alloc(&tmp, policy);
+  if (status) {
+    return status;
+  }
+  
+  /* initialize stream  */
+  status = srtp_stream_init(tmp, policy);
+  if (status) {
+    crypto_free(tmp);
+    return status;
+  }
+  
+  /* 
+   * set the head of the stream list or the template to point to the
+   * stream that we've just alloced and init'ed, depending on whether
+   * or not it has a wildcard SSRC value or not
+   *
+   * if the template stream has already been set, then the policy is
+   * inconsistent, so we return a bad_param error code
+   */
+  switch (policy->ssrc.type) {
+  case (ssrc_any_outbound):
+    if (session->stream_template) {
+      return err_status_bad_param;
+    }
+    session->stream_template = tmp;
+    session->stream_template->direction = dir_srtp_sender;
+    break;
+  case (ssrc_any_inbound):
+    if (session->stream_template) {
+      return err_status_bad_param;
+    }
+    session->stream_template = tmp;
+    session->stream_template->direction = dir_srtp_receiver;
+    break;
+  case (ssrc_specific):
+    tmp->next = session->stream_list;
+    session->stream_list = tmp;
+    break;
+  case (ssrc_undefined):
+  default:
+    crypto_free(tmp);
+    return err_status_bad_param;
+  }
+  return err_status_ok;
+}
+
+
+err_status_t
+srtp_create(srtp_t *session,               /* handle for session     */ 
+	    const srtp_policy_t *policy) { /* SRTP policy (list)     */
+  err_status_t stat;
+  srtp_ctx_t *ctx;
+
+  /* sanity check arguments */
+  if (session == NULL)
+    return err_status_bad_param;
+
+  /* allocate srtp context and set ctx_ptr */
+  ctx = (srtp_ctx_t *) crypto_alloc(sizeof(srtp_ctx_t));
+  if (ctx == NULL)
+    return err_status_alloc_fail;
+  *session = ctx;
+
+  /* 
+   * loop over elements in the policy list, allocating and
+   * initializing a stream for each element
+   */
+  ctx->stream_template = NULL;
+  ctx->stream_list = NULL;
+  while (policy != NULL) {    
+
+    stat = srtp_add_stream(ctx, policy);
+    if (stat) {
+      /* clean up everything */
+      srtp_dealloc(*session);
+      return stat;
+    }    
+
+    /* set policy to next item in list  */
+    policy = policy->next;
+  }
+
+  return err_status_ok;
+}
+
+
+err_status_t
+srtp_remove_stream(srtp_t session, uint32_t ssrc) {
+  srtp_stream_ctx_t *stream, *last_stream;
+
+  /* sanity check arguments */
+  if (session == NULL)
+    return err_status_bad_param;
+
+  /* find stream in list; complain if not found */
+  last_stream = stream = session->stream_list;
+  while ((stream != NULL) && (ssrc != stream->ssrc)) {
+    last_stream = stream;
+    stream = stream->next;
+  }
+  if (stream == NULL)
+    return err_status_no_ctx;
+
+  /* remove stream from the list */
+  last_stream->next = stream->next;
+
+  return srtp_stream_uninit_and_dealloc(stream, session->stream_template);
+}
+
+err_status_t
+srtp_stream_uninit_and_dealloc(srtp_stream_ctx_t *stream,
+                               srtp_stream_ctx_t *stream_template) {
+  err_status_t status;
+  /* deallocate rdbx data */
+  status = srtp_stream_uninit(stream);
+  if (status)
+    return status;
+
+  /* deallocate the stream */
+  status = srtp_stream_dealloc(stream, stream_template);
+  if (status)
+    return status;
+
+  return err_status_ok;
+}
+
+
+/*
+ * the default policy - provides a convenient way for callers to use
+ * the default security policy
+ * 
+ * this policy is that defined in the current SRTP internet draft.
+ *
+ */
+
+/* 
+ * NOTE: cipher_key_len is really key len (128 bits) plus salt len
+ *  (112 bits)
+ */
+/* There are hard-coded 16's for base_key_len in the key generation code */
+
+void
+crypto_policy_set_rtp_default(crypto_policy_t *p) {
+
+  p->cipher_type     = AES_128_ICM;           
+  p->cipher_key_len  = 30;                /* default 128 bits per RFC 3711 */
+  p->auth_type       = HMAC_SHA1;             
+  p->auth_key_len    = 20;                /* default 160 bits per RFC 3711 */
+  p->auth_tag_len    = 10;                /* default 80 bits per RFC 3711 */
+  p->sec_serv        = sec_serv_conf_and_auth;
+  
+}
+
+void
+crypto_policy_set_rtcp_default(crypto_policy_t *p) {
+
+  p->cipher_type     = AES_128_ICM;           
+  p->cipher_key_len  = 30;                 /* default 128 bits per RFC 3711 */
+  p->auth_type       = HMAC_SHA1;             
+  p->auth_key_len    = 20;                 /* default 160 bits per RFC 3711 */
+  p->auth_tag_len    = 10;                 /* default 80 bits per RFC 3711 */
+  p->sec_serv        = sec_serv_conf_and_auth;
+  
+}
+
+void
+crypto_policy_set_aes_cm_128_hmac_sha1_32(crypto_policy_t *p) {
+
+  /*
+   * corresponds to draft-ietf-mmusic-sdescriptions-12.txt
+   *
+   * note that this crypto policy is intended for SRTP, but not SRTCP
+   */
+
+  p->cipher_type     = AES_128_ICM;           
+  p->cipher_key_len  = 30;                /* 128 bit key, 112 bit salt */
+  p->auth_type       = HMAC_SHA1;             
+  p->auth_key_len    = 20;                /* 160 bit key               */
+  p->auth_tag_len    = 4;                 /* 32 bit tag                */
+  p->sec_serv        = sec_serv_conf_and_auth;
+  
+}
+
+
+void
+crypto_policy_set_aes_cm_128_null_auth(crypto_policy_t *p) {
+
+  /*
+   * corresponds to draft-ietf-mmusic-sdescriptions-12.txt
+   *
+   * note that this crypto policy is intended for SRTP, but not SRTCP
+   */
+
+  p->cipher_type     = AES_128_ICM;           
+  p->cipher_key_len  = 30;                /* 128 bit key, 112 bit salt */
+  p->auth_type       = NULL_AUTH;             
+  p->auth_key_len    = 0; 
+  p->auth_tag_len    = 0; 
+  p->sec_serv        = sec_serv_conf;
+  
+}
+
+
+void
+crypto_policy_set_null_cipher_hmac_sha1_80(crypto_policy_t *p) {
+
+  /*
+   * corresponds to draft-ietf-mmusic-sdescriptions-12.txt
+   */
+
+  p->cipher_type     = NULL_CIPHER;           
+  p->cipher_key_len  = 0;
+  p->auth_type       = HMAC_SHA1;             
+  p->auth_key_len    = 20; 
+  p->auth_tag_len    = 10; 
+  p->sec_serv        = sec_serv_auth;
+  
+}
+
+
+/* 
+ * secure rtcp functions
+ */
+
+err_status_t 
+srtp_protect_rtcp(srtp_t ctx, void *rtcp_hdr, int *pkt_octet_len) {
+  srtcp_hdr_t *hdr = (srtcp_hdr_t *)rtcp_hdr;
+  uint32_t *enc_start;      /* pointer to start of encrypted portion  */
+  uint32_t *auth_start;     /* pointer to start of auth. portion      */
+  uint32_t *trailer;        /* pointer to start of trailer            */
+  unsigned enc_octet_len = 0;/* number of octets in encrypted portion */
+  uint8_t *auth_tag = NULL; /* location of auth_tag within packet     */
+  err_status_t status;   
+  int tag_len;
+  srtp_stream_ctx_t *stream;
+  int prefix_len;
+  uint32_t seq_num;
+
+  /* we assume the hdr is 32-bit aligned to start */
+  /*
+   * look up ssrc in srtp_stream list, and process the packet with 
+   * the appropriate stream.  if we haven't seen this stream before,
+   * there's only one key for this srtp_session, and the cipher
+   * supports key-sharing, then we assume that a new stream using
+   * that key has just started up
+   */
+  stream = srtp_get_stream(ctx, hdr->ssrc);
+  if (stream == NULL) {
+    if (ctx->stream_template != NULL) {
+      srtp_stream_ctx_t *new_stream;
+      
+      /* allocate and initialize a new stream */
+      status = srtp_stream_clone(ctx->stream_template,
+				 hdr->ssrc, &new_stream); 
+      if (status)
+	return status;
+      
+      /* add new stream to the head of the stream_list */
+      new_stream->next = ctx->stream_list;
+      ctx->stream_list = new_stream;
+      
+      /* set stream (the pointer used in this function) */
+      stream = new_stream;
+    } else {
+      /* no template stream, so we return an error */
+      return err_status_no_ctx;
+    } 
+  }
+  
+  /* 
+   * verify that stream is for sending traffic - this check will
+   * detect SSRC collisions, since a stream that appears in both
+   * srtp_protect() and srtp_unprotect() will fail this test in one of
+   * those functions.
+   */
+  if (stream->direction != dir_srtp_sender) {
+    if (stream->direction == dir_unknown) {
+      stream->direction = dir_srtp_sender;
+    } else {
+      srtp_handle_event(ctx, stream, event_ssrc_collision);
+    }
+  }  
+
+  /* get tag length from stream context */
+  tag_len = auth_get_tag_length(stream->rtcp_auth); 
+
+  /*
+   * set encryption start and encryption length - if we're not
+   * providing confidentiality, set enc_start to NULL
+   */
+  enc_start = (uint32_t *)hdr + uint32s_in_rtcp_header;  
+  enc_octet_len = *pkt_octet_len - octets_in_rtcp_header;
+
+  /* all of the packet, except the header, gets encrypted */
+  /* NOTE: hdr->length is not usable - it refers to only the first
+	 RTCP report in the compound packet! */
+  /* NOTE: trailer is 32-bit aligned because RTCP 'packets' are always
+	 multiples of 32-bits (RFC 3550 6.1) */
+  trailer = (uint32_t *) ((char *)enc_start + enc_octet_len);
+
+  if (stream->rtcp_services & sec_serv_conf) {
+    *trailer = htonl(SRTCP_E_BIT);     /* set encrypt bit */    
+  } else {
+    enc_start = NULL;
+    enc_octet_len = 0;
+	/* 0 is network-order independant */
+    *trailer = 0x00000000;     /* set encrypt bit */    
+  }
+
+  /* 
+   * set the auth_start and auth_tag pointers to the proper locations
+   * (note that srtpc *always* provides authentication, unlike srtp)
+   */
+  /* Note: This would need to change for optional mikey data */
+  auth_start = (uint32_t *)hdr;
+  auth_tag = (uint8_t *)hdr + *pkt_octet_len + sizeof(srtcp_trailer_t); 
+
+  /* perform EKT processing if needed */
+  ekt_write_data(stream->ekt, auth_tag, tag_len, pkt_octet_len, 
+		 rdbx_get_packet_index(&stream->rtp_rdbx));
+
+  /* 
+   * check sequence number for overruns, and copy it into the packet
+   * if its value isn't too big
+   */
+  status = rdb_increment(&stream->rtcp_rdb);
+  if (status)
+    return status;
+  seq_num = rdb_get_value(&stream->rtcp_rdb);
+  *trailer |= htonl(seq_num);
+  debug_print(mod_srtp, "srtcp index: %x", seq_num);
+
+  /* 
+   * if we're using rindael counter mode, set nonce and seq 
+   */
+  if (stream->rtcp_cipher->type == &aes_icm) {
+    v128_t iv;
+    
+    iv.v32[0] = 0;
+    iv.v32[1] = hdr->ssrc;  /* still in network order! */
+    iv.v32[2] = htonl(seq_num >> 16);
+    iv.v32[3] = htonl(seq_num << 16);
+    status = aes_icm_set_iv((aes_icm_ctx_t*)stream->rtcp_cipher->state, &iv);
+
+  } else {  
+    v128_t iv;
+    
+    /* otherwise, just set the index to seq_num */  
+    iv.v32[0] = 0;
+    iv.v32[1] = 0;
+    iv.v32[2] = 0;
+    iv.v32[3] = htonl(seq_num);
+    status = cipher_set_iv(stream->rtcp_cipher, &iv);
+  }
+  if (status)
+    return err_status_cipher_fail;
+
+  /* 
+   * if we're authenticating using a universal hash, put the keystream
+   * prefix into the authentication tag
+   */
+  
+  /* if auth_start is non-null, then put keystream into tag  */
+  if (auth_start) {
+
+    /* put keystream prefix into auth_tag */
+    prefix_len = auth_get_prefix_length(stream->rtcp_auth);    
+    status = cipher_output(stream->rtcp_cipher, auth_tag, prefix_len);
+
+    debug_print(mod_srtp, "keystream prefix: %s", 
+		octet_string_hex_string(auth_tag, prefix_len));
+
+    if (status)
+      return err_status_cipher_fail;
+  }
+
+  /* if we're encrypting, exor keystream into the message */
+  if (enc_start) {
+    status = cipher_encrypt(stream->rtcp_cipher, 
+			    (uint8_t *)enc_start, &enc_octet_len);
+    if (status)
+      return err_status_cipher_fail;
+  }
+
+  /* initialize auth func context */
+  auth_start(stream->rtcp_auth);
+
+  /* 
+   * run auth func over packet (including trailer), and write the
+   * result at auth_tag 
+   */
+  status = auth_compute(stream->rtcp_auth, 
+			(uint8_t *)auth_start, 
+			(*pkt_octet_len) + sizeof(srtcp_trailer_t), 
+			auth_tag);
+  debug_print(mod_srtp, "srtcp auth tag:    %s", 
+	      octet_string_hex_string(auth_tag, tag_len));
+  if (status)
+    return err_status_auth_fail;   
+    
+  /* increase the packet length by the length of the auth tag and seq_num*/
+  *pkt_octet_len += (tag_len + sizeof(srtcp_trailer_t));
+    
+  return err_status_ok;  
+}
+
+
+err_status_t 
+srtp_unprotect_rtcp(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len) {
+  srtcp_hdr_t *hdr = (srtcp_hdr_t *)srtcp_hdr;
+  uint32_t *enc_start;      /* pointer to start of encrypted portion  */
+  uint32_t *auth_start;     /* pointer to start of auth. portion      */
+  uint32_t *trailer;        /* pointer to start of trailer            */
+  unsigned enc_octet_len = 0;/* number of octets in encrypted portion */
+  uint8_t *auth_tag = NULL; /* location of auth_tag within packet     */
+  uint8_t tmp_tag[SRTP_MAX_TAG_LEN];
+  uint8_t tag_copy[SRTP_MAX_TAG_LEN];
+  err_status_t status;   
+  unsigned auth_len;
+  int tag_len;
+  srtp_stream_ctx_t *stream;
+  int prefix_len;
+  uint32_t seq_num;
+  int e_bit_in_packet;     /* whether the E-bit was found in the packet */
+  int sec_serv_confidentiality; /* whether confidentiality was requested */
+
+  /* we assume the hdr is 32-bit aligned to start */
+  /*
+   * look up ssrc in srtp_stream list, and process the packet with 
+   * the appropriate stream.  if we haven't seen this stream before,
+   * there's only one key for this srtp_session, and the cipher
+   * supports key-sharing, then we assume that a new stream using
+   * that key has just started up
+   */
+  stream = srtp_get_stream(ctx, hdr->ssrc);
+  if (stream == NULL) {
+    if (ctx->stream_template != NULL) {
+      stream = ctx->stream_template;
+
+      /* 
+       * check to see if stream_template has an EKT data structure, in
+       * which case we initialize the template using the EKT policy
+       * referenced by that data (which consists of decrypting the
+       * master key from the EKT field)
+       *
+       * this function initializes a *provisional* stream, and this
+       * stream should not be accepted until and unless the packet
+       * passes its authentication check
+       */ 
+      if (stream->ekt != NULL) {
+	status = srtp_stream_init_from_ekt(stream, srtcp_hdr, *pkt_octet_len);
+	if (status)
+	  return status;
+      }
+
+      debug_print(mod_srtp, "srtcp using provisional stream (SSRC: 0x%08x)", 
+		  hdr->ssrc);
+    } else {
+      /* no template stream, so we return an error */
+      return err_status_no_ctx;
+    } 
+  }
+
+  sec_serv_confidentiality = stream->rtcp_services == sec_serv_conf ||
+      stream->rtcp_services == sec_serv_conf_and_auth;
+
+  /* get tag length from stream context */
+  tag_len = auth_get_tag_length(stream->rtcp_auth); 
+
+  /*
+   * set encryption start, encryption length, and trailer
+   */
+  enc_octet_len = *pkt_octet_len - 
+                  (octets_in_rtcp_header + tag_len + sizeof(srtcp_trailer_t));
+  /* index & E (encryption) bit follow normal data.  hdr->len
+	 is the number of words (32-bit) in the normal packet minus 1 */
+  /* This should point trailer to the word past the end of the
+	 normal data. */
+  /* This would need to be modified for optional mikey data */
+  /*
+   * NOTE: trailer is 32-bit aligned because RTCP 'packets' are always
+   *	 multiples of 32-bits (RFC 3550 6.1)
+   */
+  trailer = (uint32_t *) ((char *) hdr +
+		     *pkt_octet_len -(tag_len + sizeof(srtcp_trailer_t)));
+  e_bit_in_packet = (*((unsigned char *) trailer) & SRTCP_E_BYTE_BIT) == SRTCP_E_BYTE_BIT;
+  if (e_bit_in_packet != sec_serv_confidentiality) {
+    return err_status_cant_check;
+  }
+  if (sec_serv_confidentiality) {
+    enc_start = (uint32_t *)hdr + uint32s_in_rtcp_header;
+  } else {
+    enc_octet_len = 0;
+    enc_start = NULL; /* this indicates that there's no encryption */
+  }
+
+  /* 
+   * set the auth_start and auth_tag pointers to the proper locations
+   * (note that srtcp *always* uses authentication, unlike srtp)
+   */
+  auth_start = (uint32_t *)hdr;
+  auth_len = *pkt_octet_len - tag_len;
+  auth_tag = (uint8_t *)hdr + auth_len;
+
+  /* 
+   * if EKT is in use, then we make a copy of the tag from the packet,
+   * and then zeroize the location of the base tag
+   *
+   * we first re-position the auth_tag pointer so that it points to
+   * the base tag
+   */
+  if (stream->ekt) {
+    auth_tag -= ekt_octets_after_base_tag(stream->ekt);
+    memcpy(tag_copy, auth_tag, tag_len);
+    octet_string_set_to_zero(auth_tag, tag_len);
+    auth_tag = tag_copy;
+    auth_len += tag_len;
+  }
+
+  /* 
+   * check the sequence number for replays
+   */
+  /* this is easier than dealing with bitfield access */
+  seq_num = ntohl(*trailer) & SRTCP_INDEX_MASK;
+  debug_print(mod_srtp, "srtcp index: %x", seq_num);
+  status = rdb_check(&stream->rtcp_rdb, seq_num);
+  if (status)
+    return status;
+
+  /* 
+   * if we're using aes counter mode, set nonce and seq 
+   */
+  if (stream->rtcp_cipher->type == &aes_icm) {
+    v128_t iv;
+
+    iv.v32[0] = 0;
+    iv.v32[1] = hdr->ssrc; /* still in network order! */
+    iv.v32[2] = htonl(seq_num >> 16);
+    iv.v32[3] = htonl(seq_num << 16);
+    status = aes_icm_set_iv((aes_icm_ctx_t*)stream->rtcp_cipher->state, &iv);
+
+  } else {  
+    v128_t iv;
+    
+    /* otherwise, just set the index to seq_num */  
+    iv.v32[0] = 0;
+    iv.v32[1] = 0;
+    iv.v32[2] = 0;
+    iv.v32[3] = htonl(seq_num);
+    status = cipher_set_iv(stream->rtcp_cipher, &iv);
+
+  }
+  if (status)
+    return err_status_cipher_fail;
+
+  /* initialize auth func context */
+  auth_start(stream->rtcp_auth);
+
+  /* run auth func over packet, put result into tmp_tag */
+  status = auth_compute(stream->rtcp_auth, (uint8_t *)auth_start,  
+			auth_len, tmp_tag);
+  debug_print(mod_srtp, "srtcp computed tag:       %s", 
+	      octet_string_hex_string(tmp_tag, tag_len));
+  if (status)
+    return err_status_auth_fail;   
+  
+  /* compare the tag just computed with the one in the packet */
+  debug_print(mod_srtp, "srtcp tag from packet:    %s", 
+	      octet_string_hex_string(auth_tag, tag_len));  
+  if (octet_string_is_eq(tmp_tag, auth_tag, tag_len))
+    return err_status_auth_fail;
+
+  /* 
+   * if we're authenticating using a universal hash, put the keystream
+   * prefix into the authentication tag
+   */
+  prefix_len = auth_get_prefix_length(stream->rtcp_auth);    
+  if (prefix_len) {
+    status = cipher_output(stream->rtcp_cipher, auth_tag, prefix_len);
+    debug_print(mod_srtp, "keystream prefix: %s", 
+		octet_string_hex_string(auth_tag, prefix_len));
+    if (status)
+      return err_status_cipher_fail;
+  }
+
+  /* if we're decrypting, exor keystream into the message */
+  if (enc_start) {
+    status = cipher_encrypt(stream->rtcp_cipher, 
+			    (uint8_t *)enc_start, &enc_octet_len);
+    if (status)
+      return err_status_cipher_fail;
+  }
+
+  /* decrease the packet length by the length of the auth tag and seq_num */
+  *pkt_octet_len -= (tag_len + sizeof(srtcp_trailer_t));
+
+  /*
+   * if EKT is in effect, subtract the EKT data out of the packet
+   * length
+   */
+  *pkt_octet_len -= ekt_octets_after_base_tag(stream->ekt);
+
+  /* 
+   * verify that stream is for received traffic - this check will
+   * detect SSRC collisions, since a stream that appears in both
+   * srtp_protect() and srtp_unprotect() will fail this test in one of
+   * those functions.
+   *
+   * we do this check *after* the authentication check, so that the
+   * latter check will catch any attempts to fool us into thinking
+   * that we've got a collision
+   */
+  if (stream->direction != dir_srtp_receiver) {
+    if (stream->direction == dir_unknown) {
+      stream->direction = dir_srtp_receiver;
+    } else {
+      srtp_handle_event(ctx, stream, event_ssrc_collision);
+    }
+  }
+
+  /* 
+   * if the stream is a 'provisional' one, in which the template context
+   * is used, then we need to allocate a new stream at this point, since
+   * the authentication passed
+   */
+  if (stream == ctx->stream_template) {  
+    srtp_stream_ctx_t *new_stream;
+
+    /* 
+     * allocate and initialize a new stream 
+     * 
+     * note that we indicate failure if we can't allocate the new
+     * stream, and some implementations will want to not return
+     * failure here
+     */
+    status = srtp_stream_clone(ctx->stream_template, hdr->ssrc, &new_stream); 
+    if (status)
+      return status;
+    
+    /* add new stream to the head of the stream_list */
+    new_stream->next = ctx->stream_list;
+    ctx->stream_list = new_stream;
+    
+    /* set stream (the pointer used in this function) */
+    stream = new_stream;
+  }
+
+  /* we've passed the authentication check, so add seq_num to the rdb */
+  rdb_add_index(&stream->rtcp_rdb, seq_num);
+    
+    
+  return err_status_ok;  
+}
+
+
+
+/*
+ * dtls keying for srtp 
+ */
+
+err_status_t
+crypto_policy_set_from_profile_for_rtp(crypto_policy_t *policy, 
+				       srtp_profile_t profile) {
+
+  /* set SRTP policy from the SRTP profile in the key set */
+  switch(profile) {
+  case srtp_profile_aes128_cm_sha1_80:
+    crypto_policy_set_aes_cm_128_hmac_sha1_80(policy);
+    crypto_policy_set_aes_cm_128_hmac_sha1_80(policy);
+    break;
+  case srtp_profile_aes128_cm_sha1_32:
+    crypto_policy_set_aes_cm_128_hmac_sha1_32(policy);
+    crypto_policy_set_aes_cm_128_hmac_sha1_80(policy);
+    break;
+  case srtp_profile_null_sha1_80:
+    crypto_policy_set_null_cipher_hmac_sha1_80(policy);
+    crypto_policy_set_null_cipher_hmac_sha1_80(policy);
+    break;
+    /* the following profiles are not (yet) supported */
+  case srtp_profile_null_sha1_32:
+  case srtp_profile_aes256_cm_sha1_80:
+  case srtp_profile_aes256_cm_sha1_32:
+  default:
+    return err_status_bad_param;
+  }
+
+  return err_status_ok;
+}
+
+err_status_t
+crypto_policy_set_from_profile_for_rtcp(crypto_policy_t *policy, 
+					srtp_profile_t profile) {
+
+  /* set SRTP policy from the SRTP profile in the key set */
+  switch(profile) {
+  case srtp_profile_aes128_cm_sha1_80:
+    crypto_policy_set_aes_cm_128_hmac_sha1_80(policy);
+    break;
+  case srtp_profile_aes128_cm_sha1_32:
+    crypto_policy_set_aes_cm_128_hmac_sha1_80(policy);
+    break;
+  case srtp_profile_null_sha1_80:
+    crypto_policy_set_null_cipher_hmac_sha1_80(policy);
+    break;
+    /* the following profiles are not (yet) supported */
+  case srtp_profile_null_sha1_32:
+  case srtp_profile_aes256_cm_sha1_80:
+  case srtp_profile_aes256_cm_sha1_32:
+  default:
+    return err_status_bad_param;
+  }
+
+  return err_status_ok;
+}
+
+void
+append_salt_to_key(uint8_t *key, unsigned int bytes_in_key,
+		   uint8_t *salt, unsigned int bytes_in_salt) {
+
+  memcpy(key + bytes_in_key, salt, bytes_in_salt);
+
+}
+
+unsigned int
+srtp_profile_get_master_key_length(srtp_profile_t profile) {
+
+  switch(profile) {
+  case srtp_profile_aes128_cm_sha1_80:
+    return 16;
+    break;
+  case srtp_profile_aes128_cm_sha1_32:
+    return 16;
+    break;
+  case srtp_profile_null_sha1_80:
+    return 16;
+    break;
+    /* the following profiles are not (yet) supported */
+  case srtp_profile_null_sha1_32:
+  case srtp_profile_aes256_cm_sha1_80:
+  case srtp_profile_aes256_cm_sha1_32:
+  default:
+    return 0;  /* indicate error by returning a zero */
+  }
+}
+
+unsigned int
+srtp_profile_get_master_salt_length(srtp_profile_t profile) {
+
+  switch(profile) {
+  case srtp_profile_aes128_cm_sha1_80:
+    return 14;
+    break;
+  case srtp_profile_aes128_cm_sha1_32:
+    return 14;
+    break;
+  case srtp_profile_null_sha1_80:
+    return 14;
+    break;
+    /* the following profiles are not (yet) supported */
+  case srtp_profile_null_sha1_32:
+  case srtp_profile_aes256_cm_sha1_80:
+  case srtp_profile_aes256_cm_sha1_32:
+  default:
+    return 0;  /* indicate error by returning a zero */
+  }
+}
diff --git a/srtp7.sln b/srtp7.sln
new file mode 100644
index 0000000..c006391
--- /dev/null
+++ b/srtp7.sln
@@ -0,0 +1,21 @@
+Microsoft Visual Studio Solution File, Format Version 8.00
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libSRTP", "srtp7.vcproj", "{7E1E1308-F82E-4DD3-B25C-CD12756A1DD9}"
+	ProjectSection(ProjectDependencies) = postProject
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfiguration) = preSolution
+		Debug = Debug
+		Release = Release
+	EndGlobalSection
+	GlobalSection(ProjectConfiguration) = postSolution
+		{7E1E1308-F82E-4DD3-B25C-CD12756A1DD9}.Debug.ActiveCfg = Debug|Win32
+		{7E1E1308-F82E-4DD3-B25C-CD12756A1DD9}.Debug.Build.0 = Debug|Win32
+		{7E1E1308-F82E-4DD3-B25C-CD12756A1DD9}.Release.ActiveCfg = Release|Win32
+		{7E1E1308-F82E-4DD3-B25C-CD12756A1DD9}.Release.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+	EndGlobalSection
+	GlobalSection(ExtensibilityAddIns) = postSolution
+	EndGlobalSection
+EndGlobal
diff --git a/srtp7.vcproj b/srtp7.vcproj
new file mode 100644
index 0000000..49b60c5
--- /dev/null
+++ b/srtp7.vcproj
@@ -0,0 +1,298 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="7.10"
+	Name="libSRTP"
+	ProjectGUID="{7E1E1308-F82E-4DD3-B25C-CD12756A1DD9}"
+	Keyword="Win32Proj">
+	<Platforms>
+		<Platform
+			Name="Win32"/>
+	</Platforms>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory="Debug"
+			IntermediateDirectory="Debug"
+			ConfigurationType="1"
+			CharacterSet="2">
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				InlineFunctionExpansion="0"
+				AdditionalIncludeDirectories="C:\dev\foo\srtp;&quot;$(SolutionDir)&quot;;.\include;.\crypto\include;&quot;..\..\OpenSSL\openssl-0.9.7i\inc32&quot;;&quot;C:Library\OpenSSL\openssl-0.9.8\inc32&quot;"
+				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE;DEBUG"
+				ExceptionHandling="FALSE"
+				BasicRuntimeChecks="0"
+				RuntimeLibrary="1"
+				UsePrecompiledHeader="0"
+				WarningLevel="3"
+				Detect64BitPortabilityProblems="TRUE"
+				DebugInformationFormat="4"
+				CompileAs="1"/>
+			<Tool
+				Name="VCCustomBuildTool"/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="Ws2_32.lib libeay32.lib ssleay32.lib"
+				AdditionalLibraryDirectories="&quot;Library\OpenSSL\openssl-0.9.8\libs&quot;"
+				GenerateDebugInformation="TRUE"/>
+			<Tool
+				Name="VCMIDLTool"/>
+			<Tool
+				Name="VCPostBuildEventTool"/>
+			<Tool
+				Name="VCPreBuildEventTool"/>
+			<Tool
+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"/>
+			<Tool
+				Name="VCWebDeploymentTool"/>
+			<Tool
+				Name="VCManagedWrapperGeneratorTool"/>
+			<Tool
+				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory="Release"
+			IntermediateDirectory="Release"
+			ConfigurationType="4"
+			CharacterSet="2">
+			<Tool
+				Name="VCCLCompilerTool"
+				AdditionalIncludeDirectories="&quot;.\include&quot;;&quot;.\crypto\include&quot;;&quot;..\..\OpenSSL\openssl-0.9.7i\inc32&quot;"
+				PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
+				BasicRuntimeChecks="0"
+				RuntimeLibrary="0"
+				UsePrecompiledHeader="0"
+				ObjectFile="$(IntDir)/"
+				WarningLevel="3"
+				Detect64BitPortabilityProblems="TRUE"
+				DebugInformationFormat="3"/>
+			<Tool
+				Name="VCCustomBuildTool"/>
+			<Tool
+				Name="VCLibrarianTool"/>
+			<Tool
+				Name="VCMIDLTool"/>
+			<Tool
+				Name="VCPostBuildEventTool"/>
+			<Tool
+				Name="VCPreBuildEventTool"/>
+			<Tool
+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"/>
+			<Tool
+				Name="VCManagedWrapperGeneratorTool"/>
+			<Tool
+				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+		</Configuration>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
+			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
+			<File
+				RelativePath=".\test\getopt.c">
+			</File>
+			<File
+				RelativePath=".\srtp\srtp.c">
+			</File>
+			<File
+				RelativePath=".\test\srtp_driver.c">
+			</File>
+			<Filter
+				Name="Kernel">
+				<File
+					RelativePath=".\crypto\kernel\alloc.c">
+				</File>
+				<File
+					RelativePath=".\crypto\kernel\crypto_kernel.c">
+				</File>
+				<File
+					RelativePath=".\crypto\rng\ctr_prng.c">
+				</File>
+				<File
+					RelativePath=".\crypto\kernel\err.c">
+				</File>
+				<File
+					RelativePath=".\crypto\kernel\key.c">
+				</File>
+				<File
+					RelativePath=".\crypto\rng\prng.c">
+				</File>
+				<File
+					RelativePath=".\crypto\rng\rand_source.c">
+				</File>
+			</Filter>
+			<Filter
+				Name="Ciphers">
+				<File
+					RelativePath=".\crypto\cipher\aes.c">
+				</File>
+				<File
+					RelativePath=".\crypto\cipher\aes_cbc.c">
+				</File>
+				<File
+					RelativePath=".\crypto\cipher\aes_icm.c">
+				</File>
+				<File
+					RelativePath=".\crypto\cipher\cipher.c">
+				</File>
+				<File
+					RelativePath=".\crypto\cipher\null_cipher.c">
+				</File>
+			</Filter>
+			<Filter
+				Name="Hashes">
+				<File
+					RelativePath=".\crypto\hash\auth.c">
+				</File>
+				<File
+					RelativePath=".\crypto\hash\hmac.c">
+				</File>
+				<File
+					RelativePath=".\crypto\hash\null_auth.c">
+				</File>
+				<File
+					RelativePath=".\crypto\hash\sha1.c">
+				</File>
+			</Filter>
+			<Filter
+				Name="Replay">
+				<File
+					RelativePath=".\crypto\replay\rdb.c">
+				</File>
+				<File
+					RelativePath=".\crypto\replay\rdbx.c">
+				</File>
+				<File
+					RelativePath=".\crypto\replay\ut_sim.c">
+				</File>
+			</Filter>
+			<Filter
+				Name="Math">
+				<File
+					RelativePath=".\crypto\math\datatypes.c">
+				</File>
+				<File
+					RelativePath=".\crypto\math\stat.c">
+				</File>
+			</Filter>
+		</Filter>
+		<Filter
+			Name="Header Files"
+			Filter="h;hpp;hxx;hm;inl;inc;xsd"
+			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
+			<File
+				RelativePath=".\crypto\include\aes.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\aes_cbc.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\aes_icm.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\alloc.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\auth.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\cipher.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\config.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\crypto.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\crypto_kernel.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\crypto_math.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\crypto_types.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\cryptoalg.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\datatypes.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\err.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\gf2_8.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\hmac.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\integers.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\kernel_compat.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\key.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\null_auth.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\null_cipher.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\prng.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\rand_source.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\rdb.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\rdbx.h">
+			</File>
+			<File
+				RelativePath=".\include\rtp.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\sha1.h">
+			</File>
+			<File
+				RelativePath=".\include\srtp.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\stat.h">
+			</File>
+			<File
+				RelativePath=".\include\ut_sim.h">
+			</File>
+			<File
+				RelativePath=".\crypto\include\xfm.h">
+			</File>
+		</Filter>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>
diff --git a/tables/aes_tables.c b/tables/aes_tables.c
new file mode 100644
index 0000000..bc5f312
--- /dev/null
+++ b/tables/aes_tables.c
@@ -0,0 +1,350 @@
+/*
+ * aes_tables.c
+ * 
+ * generate tables for the AES cipher
+ * 
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright(c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>
+#include "gf2_8.h"
+#include "crypto_math.h"
+
+
+unsigned char aes_sbox[256];
+
+unsigned char aes_inv_sbox[256];
+
+uint32_t T0[256], T1[256], T2[256], T3[256], T4[256]; 
+
+
+#define AES_INVERSE_TEST 0  /* set to 1 to test forward/backwards aes */
+
+/* functions for precomputing AES values */
+
+/*
+ * A[] is the 8 x 8 binary matrix (represented as an array of columns,
+ * where each column is an octet) which defines the affine
+ * transformation used in the AES substitution table (Section
+ * 4.2.1 of the spec).
+ */
+
+uint8_t A[8] = { 31, 62, 124, 248, 241, 227, 199, 143 };
+
+/*
+ * b is the 8 bit vector (represented as an octet) used in the affine
+ * transform described above.
+ */
+
+uint8_t b = 99;
+
+
+void
+aes_init_sbox(void) {
+  unsigned int i;
+  uint8_t x;
+  
+  for (i=0; i < 256; i++) {
+    x = gf2_8_compute_inverse((gf2_8)i);
+    x = A_times_x_plus_b(A, x, b);
+    aes_sbox[i] = x;
+    aes_inv_sbox[x] = i;
+  }
+}
+
+void
+aes_compute_tables(void) {
+  int i;
+  uint32_t x1, x2, x3;
+  v32_t tmp;
+
+  /* initialize substitution table */
+  aes_init_sbox();
+
+  /* combine sbox with linear operations to form 8-bit to 32-bit tables */
+  for (i=0; i < 256; i++) {
+    x1 = aes_sbox[i];
+    x2 = gf2_8_shift(x1);
+    x3 = x2 ^ x1;
+
+    tmp.v8[0] = x2;
+    tmp.v8[1] = x1;
+    tmp.v8[2] = x1;
+    tmp.v8[3] = x3;
+    T0[i] = tmp.value;
+
+    tmp.v8[0] = x3;
+    tmp.v8[1] = x2;
+    tmp.v8[2] = x1;
+    tmp.v8[3] = x1;
+    T1[i] = tmp.value;
+     
+    tmp.v8[0] = x1;
+    tmp.v8[1] = x3;
+    tmp.v8[2] = x2;
+    tmp.v8[3] = x1;
+    T2[i] = tmp.value;
+
+    tmp.v8[0] = x1;
+    tmp.v8[1] = x1;
+    tmp.v8[2] = x3;
+    tmp.v8[3] = x2;
+    T3[i] = tmp.value;
+     
+  }
+}
+
+
+/*
+ * the tables U0, U1, U2, U3 implement the aes operations invSubBytes,
+ * invMixColumns, and invShiftRows 
+ */
+
+uint32_t U0[256], U1[256], U2[256], U3[256], U4[256];
+
+extern uint8_t aes_inv_sbox[256];
+
+void
+aes_compute_inv_tables(void) {
+  int i;
+  uint8_t x, xe, x9, xd, xb;
+  v32_t tmp;
+
+  /* combine sbox with linear operations to form 8-bit to 32-bit tables */
+  for (i=0; i < 256; i++) {
+     x = aes_inv_sbox[i];
+
+     xe = gf2_8_multiply(0x0e, x);     
+     x9 = gf2_8_multiply(0x09, x);     
+     xd = gf2_8_multiply(0x0d, x);     
+     xb = gf2_8_multiply(0x0b, x);     
+
+     tmp.v8[0] = xe;
+     tmp.v8[1] = x9;
+     tmp.v8[2] = xd;
+     tmp.v8[3] = xb;
+     U0[i] = tmp.value;
+
+     tmp.v8[0] = xb;
+     tmp.v8[1] = xe;
+     tmp.v8[2] = x9;
+     tmp.v8[3] = xd;
+     U1[i] = tmp.value;
+     
+     tmp.v8[0] = xd;
+     tmp.v8[1] = xb;
+     tmp.v8[2] = xe;
+     tmp.v8[3] = x9;
+     U2[i] = tmp.value;
+
+     tmp.v8[0] = x9;
+     tmp.v8[1] = xd;
+     tmp.v8[2] = xb;
+     tmp.v8[3] = xe;
+     U3[i] = tmp.value;
+
+     tmp.v8[0] = tmp.v8[1] = tmp.v8[2] = tmp.v8[3] = x;
+     U4[i] = tmp.value;
+   }
+}
+
+
+/*
+ * aes_test_inverse() returns err_status_ok if aes
+ * encryption and decryption are true inverses of each other, and
+ * returns err_status_algo_fail otherwise
+ */
+
+#include "err.h"
+
+err_status_t
+aes_test_inverse(void);
+
+#define TABLES_32BIT 1
+
+#ifndef HIDE_AES_TABLES_MAIN
+
+int
+main(void) {
+  int i;
+
+  aes_init_sbox();
+  aes_compute_inv_tables();
+
+#if TABLES_32BIT
+  printf("uint32_t U0 = {");
+  for (i=0; i < 256; i++) {
+    if ((i % 4) == 0)
+      printf("\n");
+    printf("0x%0x, ", U0[i]);
+  }
+  printf("\n}\n");
+
+ printf("uint32_t U1 = {");
+  for (i=0; i < 256; i++) {
+    if ((i % 4) == 0)
+      printf("\n");
+    printf("0x%x, ", U1[i]);
+  }
+  printf("\n}\n");
+
+ printf("uint32_t U2 = {");
+  for (i=0; i < 256; i++) {
+    if ((i % 4) == 0)
+      printf("\n");
+    printf("0x%x, ", U2[i]);
+  }
+  printf("\n}\n");
+
+ printf("uint32_t U3 = {");
+  for (i=0; i < 256; i++) {
+    if ((i % 4) == 0)
+      printf("\n");
+    printf("0x%x, ", U3[i]);
+  }
+  printf("\n}\n");
+
+ printf("uint32_t U4 = {");
+ for (i=0; i < 256; i++) {
+    if ((i % 4) == 0)
+      printf("\n");
+    printf("0x%x, ", U4[i]);
+  }
+  printf("\n}\n");
+
+#else
+
+  printf("uint32_t U0 = {");
+  for (i=0; i < 256; i++) {
+    if ((i % 4) == 0)
+      printf("\n");
+    printf("0x%lx, ", U0[i]);
+  }
+  printf("\n}\n");
+
+ printf("uint32_t U1 = {");
+  for (i=0; i < 256; i++) {
+    if ((i % 4) == 0)
+      printf("\n");
+    printf("0x%lx, ", U1[i]);
+  }
+  printf("\n}\n");
+
+ printf("uint32_t U2 = {");
+  for (i=0; i < 256; i++) {
+    if ((i % 4) == 0)
+      printf("\n");
+    printf("0x%lx, ", U2[i]);
+  }
+  printf("\n}\n");
+
+ printf("uint32_t U3 = {");
+  for (i=0; i < 256; i++) {
+    if ((i % 4) == 0)
+      printf("\n");
+    printf("0x%lx, ", U3[i]);
+  }
+  printf("\n}\n");
+
+ printf("uint32_t U4 = {");
+ for (i=0; i < 256; i++) {
+    if ((i % 4) == 0)
+      printf("\n");
+    printf("0x%lx, ", U4[i]);
+  }
+  printf("\n}\n");
+
+
+#endif /* TABLES_32BIT */
+
+
+#if AES_INVERSE_TEST
+  /* 
+   * test that aes_encrypt and aes_decrypt are actually
+   * inverses of each other 
+   */
+    
+  printf("aes inverse test: ");
+  if (aes_test_inverse() == err_status_ok)
+    printf("passed\n");
+  else {
+    printf("failed\n");
+    exit(1);
+  }
+#endif
+  
+  return 0;
+}
+
+#endif // HIDE_AES_TABLES_MAIN
+
+#if AES_INVERSE_TEST
+
+err_status_t
+aes_test_inverse(void) {
+  v128_t x, y;
+  aes_expanded_key_t expanded_key, decrypt_key;
+  uint8_t plaintext[16] = {
+    0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
+    0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff 
+  };
+  uint8_t key[16] = {
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
+    0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
+  };
+  v128_t k;
+  v128_set_to_zero(&x);
+  
+  v128_copy_octet_string(&k, key);
+  v128_copy_octet_string(&x, plaintext);
+  aes_expand_encryption_key(k, expanded_key);
+  aes_expand_decryption_key(k, decrypt_key);
+  aes_encrypt(&x, expanded_key);
+  aes_decrypt(&x, decrypt_key);
+  
+  /* compare to expected value then report */
+  v128_copy_octet_string(&y, plaintext);
+
+  if (v128_is_eq(&x, &y))
+    return err_status_ok;
+  return err_status_algo_fail;
+  
+}
+ 
+#endif 
diff --git a/test/dtls_srtp_driver.c b/test/dtls_srtp_driver.c
new file mode 100644
index 0000000..87058d2
--- /dev/null
+++ b/test/dtls_srtp_driver.c
@@ -0,0 +1,248 @@
+/*
+ * dtls_srtp_driver.c
+ *
+ * test driver for DTLS-SRTP functions
+ *
+ * David McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>    /* for printf()          */
+#include "getopt_s.h" /* for local getopt()    */
+#include "srtp_priv.h"
+
+err_status_t 
+test_dtls_srtp();
+
+srtp_hdr_t *
+srtp_create_test_packet(int pkt_octet_len, uint32_t ssrc);
+
+void
+usage(char *prog_name) {
+  printf("usage: %s [ -t ][ -c ][ -v ][-d <debug_module> ]* [ -l ]\n"
+         "  -d <mod>   turn on debugging module <mod>\n"
+         "  -l         list debugging modules\n", prog_name);
+  exit(1);
+}
+
+int
+main(int argc, char *argv[]) {
+  unsigned do_list_mods      = 0;
+  char q;
+  err_status_t err;
+
+  printf("dtls_srtp_driver\n");
+
+  /* initialize srtp library */
+  err = srtp_init();
+  if (err) {
+    printf("error: srtp init failed with error code %d\n", err);
+    exit(1);
+  }
+
+  /* process input arguments */
+  while (1) {
+    q = getopt_s(argc, argv, "ld:");
+    if (q == -1) 
+      break;
+    switch (q) {
+    case 'l':
+      do_list_mods = 1;
+      break;
+    case 'd':
+      err = crypto_kernel_set_debug_module(optarg_s, 1);
+      if (err) {
+        printf("error: set debug module (%s) failed\n", optarg_s);
+        exit(1);
+      }  
+      break;
+    default:
+      usage(argv[0]);
+    }    
+  }
+
+  if (do_list_mods) {
+    err = crypto_kernel_list_debug_modules();
+    if (err) {
+      printf("error: list of debug modules failed\n");
+      exit(1);
+    }
+  }
+
+  printf("testing dtls_srtp...");
+  err = test_dtls_srtp();
+  if (err) {
+    printf("\nerror (code %d)\n", err);
+    exit(1);
+  }
+  printf("passed\n");
+  
+  return 0;
+}
+
+
+err_status_t
+test_dtls_srtp() {
+  srtp_hdr_t *test_packet;
+  int test_packet_len = 80;
+  srtp_t s;
+  srtp_policy_t policy;
+  uint8_t key[SRTP_MAX_KEY_LEN];
+  uint8_t salt[SRTP_MAX_KEY_LEN];
+  unsigned int key_len, salt_len;
+  srtp_profile_t profile;
+  err_status_t err;
+
+  /* create a 'null' SRTP session */
+  err = srtp_create(&s, NULL);
+  if (err) 
+    return err;
+
+  /* 
+   * verify that packet-processing functions behave properly - we
+   * expect that these functions will return err_status_no_ctx
+   */
+  test_packet = srtp_create_test_packet(80, 0xa5a5a5a5);
+  if (test_packet == NULL) 
+    return err_status_alloc_fail;
+  err = srtp_protect(s, test_packet, &test_packet_len);
+  if (err != err_status_no_ctx) {
+    printf("wrong return value from srtp_protect() (got code %d)\n", 
+	   err);
+    return err_status_fail;
+  }
+  err = srtp_unprotect(s, test_packet, &test_packet_len);
+  if (err != err_status_no_ctx) {
+    printf("wrong return value from srtp_unprotect() (got code %d)\n", 
+	   err);
+    return err_status_fail;
+  }
+  err = srtp_protect_rtcp(s, test_packet, &test_packet_len);
+  if (err != err_status_no_ctx) {
+    printf("wrong return value from srtp_protect_rtcp() (got code %d)\n", 
+	   err);
+    return err_status_fail;
+  }
+  err = srtp_unprotect_rtcp(s, test_packet, &test_packet_len);
+  if (err != err_status_no_ctx) {
+    printf("wrong return value from srtp_unprotect_rtcp() (got code %d)\n", 
+	   err);
+    return err_status_fail;
+  }
+
+
+  /* 
+   * set keys to known values for testing
+   */
+  profile = srtp_profile_aes128_cm_sha1_80;
+  key_len = srtp_profile_get_master_key_length(profile);
+  salt_len = srtp_profile_get_master_salt_length(profile);
+  memset(key, 0xff, key_len);
+  memset(salt, 0xee, salt_len);
+  append_salt_to_key(key, key_len, salt, salt_len);
+  policy.key  = key;
+
+  /* initialize SRTP policy from profile  */
+  err = crypto_policy_set_from_profile_for_rtp(&policy.rtp, profile);
+  if (err) return err;
+  err = crypto_policy_set_from_profile_for_rtcp(&policy.rtcp, profile);
+  if (err) return err;
+  policy.ssrc.type  = ssrc_any_inbound;
+  policy.ekt = NULL;
+  policy.window_size = 128;
+  policy.allow_repeat_tx = 0;
+  policy.next = NULL;
+    
+  err = srtp_add_stream(s, &policy);
+  if (err)
+    return err;
+  
+  return err_status_ok;
+}
+
+
+
+/*
+ * srtp_create_test_packet(len, ssrc) returns a pointer to a
+ * (malloced) example RTP packet whose data field has the length given
+ * by pkt_octet_len and the SSRC value ssrc.  The total length of the
+ * packet is twelve octets longer, since the header is at the
+ * beginning.  There is room at the end of the packet for a trailer,
+ * and the four octets following the packet are filled with 0xff
+ * values to enable testing for overwrites.
+ *
+ * note that the location of the test packet can (and should) be
+ * deallocated with the free() call once it is no longer needed.
+ */
+
+srtp_hdr_t *
+srtp_create_test_packet(int pkt_octet_len, uint32_t ssrc) {
+  int i;
+  uint8_t *buffer;
+  srtp_hdr_t *hdr;
+  int bytes_in_hdr = 12;
+
+  /* allocate memory for test packet */
+  hdr = malloc(pkt_octet_len + bytes_in_hdr
+	       + SRTP_MAX_TRAILER_LEN + 4);
+  if (!hdr)
+    return NULL;
+  
+  hdr->version = 2;              /* RTP version two     */
+  hdr->p    = 0;                 /* no padding needed   */
+  hdr->x    = 0;                 /* no header extension */
+  hdr->cc   = 0;                 /* no CSRCs            */
+  hdr->m    = 0;                 /* marker bit          */
+  hdr->pt   = 0xf;               /* payload type        */
+  hdr->seq  = htons(0x1234);     /* sequence number     */
+  hdr->ts   = htonl(0xdecafbad); /* timestamp           */
+  hdr->ssrc = htonl(ssrc);       /* synch. source       */
+
+  buffer = (uint8_t *)hdr;
+  buffer += bytes_in_hdr;
+
+  /* set RTP data to 0xab */
+  for (i=0; i < pkt_octet_len; i++)
+    *buffer++ = 0xab;
+
+  /* set post-data value to 0xffff to enable overrun checking */
+  for (i=0; i < SRTP_MAX_TRAILER_LEN+4; i++)
+    *buffer++ = 0xff;
+
+  return hdr;
+}
diff --git a/test/getopt_s.c b/test/getopt_s.c
new file mode 100644
index 0000000..243ad6e
--- /dev/null
+++ b/test/getopt_s.c
@@ -0,0 +1,112 @@
+/*
+ * getopt.c
+ *
+ * a minimal implementation of the getopt() function, written so that
+ * test applications that use that function can run on non-POSIX
+ * platforms 
+ *
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdlib.h>  /* for NULL */
+
+int optind_s = 0;
+
+char *optarg_s;
+
+#define GETOPT_FOUND_WITHOUT_ARGUMENT    2
+#define GETOPT_FOUND_WITH_ARGUMENT       1
+#define GETOPT_NOT_FOUND                 0 
+
+static int 
+getopt_check_character(char c, const char *string) {
+  unsigned int max_string_len = 128;
+
+  while (*string != 0) {
+    if (max_string_len == 0) {
+      return '?';
+    }
+    if (*string++ == c) {
+      if (*string == ':') {
+	return GETOPT_FOUND_WITH_ARGUMENT;
+      } else {
+	return GETOPT_FOUND_WITHOUT_ARGUMENT;
+      }
+    }
+  }
+  return GETOPT_NOT_FOUND;
+}
+
+int
+getopt_s(int argc, 
+       char * const argv[], 
+       const char *optstring) {
+
+
+  while (optind_s + 1 < argc) {
+    char *string;
+    
+    /* move 'string' on to next argument */
+    optind_s++;
+    string = argv[optind_s];
+
+    if (string == NULL)
+      return '?'; /* NULL argument string */
+
+    if (string[0] != '-')
+      return -1; /* found an unexpected character */
+
+    switch(getopt_check_character(string[1], optstring)) {
+    case GETOPT_FOUND_WITH_ARGUMENT:
+      if (optind_s + 1 < argc) {
+	optind_s++;
+	optarg_s = argv[optind_s];
+	return string[1]; 
+      } else {
+	return '?';  /* argument missing */
+      }
+    case GETOPT_FOUND_WITHOUT_ARGUMENT:
+      return string[1];
+    case GETOPT_NOT_FOUND:
+    default:
+      return '?'; /* didn't find expected character */
+      break;
+    }
+  }
+
+  return -1;
+}
diff --git a/test/lfsr.c b/test/lfsr.c
new file mode 100644
index 0000000..28ea02e
--- /dev/null
+++ b/test/lfsr.c
@@ -0,0 +1,310 @@
+/*
+ * lfsr.c
+ *
+ */
+
+
+#include <stdio.h>
+#include "datatypes.h"
+
+uint32_t 
+parity(uint32_t x) {
+
+  x ^= (x >> 16);
+  x ^= (x >> 8);
+  x ^= (x >> 4);
+  x ^= (x >> 2);
+  x ^= (x >> 1);
+
+  return x & 1;
+}
+
+
+/* typedef struct { */
+/*   uint32_t register[8]; */
+/* } lfsr_t; */
+
+void
+compute_period(uint32_t feedback_polynomial) {
+  int i;
+  v32_t lfsr;
+  v32_t mask;
+
+  mask.value = feedback_polynomial;
+  lfsr.value = 1;
+
+  printf("polynomial: %s\t", v32_bit_string(mask));
+
+  for (i=0; i < 256; i++) {
+/*     printf("%s\n", v32_bit_string(lfsr)); */
+    if (parity(mask.value & lfsr.value))
+      lfsr.value = ((lfsr.value << 1) | 1) & 0xff;
+    else
+      lfsr.value = (lfsr.value << 1) & 0xff;
+    
+    /* now halt if we're back at the initial state */
+    if (lfsr.value == 1) {
+      printf("period: %d\n", i);
+      break;
+    }
+  }
+}
+
+uint32_t poly0 = 223;
+
+
+uint32_t polynomials[39] = {
+31, 
+47,
+55,
+59,
+61,
+79,
+87,
+91,
+103,
+107,
+109,
+115,
+117,
+121,
+143,
+151,
+157,
+167,
+171,
+173,
+179,
+181,
+185,
+199,
+203,
+205,
+211,
+213,
+227,
+229,
+233, 
+241,
+127,
+191,
+223, 
+239,
+247,
+251,
+253 
+};
+
+char binary_string[32];
+
+char *
+u32_bit_string(uint32_t x, unsigned int length) {
+  unsigned int mask;
+  int index;
+ 
+  mask = 1 << length;
+  index = 0;
+  for (; mask > 0; mask >>= 1)
+    if ((x & mask) == 0)
+      binary_string[index++] = '0';
+    else
+      binary_string[index++] = '1';
+
+  binary_string[index++] = 0;  /* NULL terminate string */
+  return binary_string;
+}
+
+extern int octet_weight[256];
+
+unsigned int 
+weight(uint32_t poly) {
+  int wt = 0;
+
+  /* note: endian-ness makes no difference */
+  wt += octet_weight[poly        & 0xff]; 
+  wt += octet_weight[(poly >> 8) & 0xff];
+  wt += octet_weight[(poly >> 16) & 0xff];
+  wt += octet_weight[(poly >> 24)];
+
+  return wt;
+}
+
+#define MAX_PERIOD 65535
+
+#define debug_print 0
+
+int
+period(uint32_t poly) {
+  int i;
+  uint32_t x;
+
+
+  /* set lfsr to 1 */
+  x = 1;
+#if debug_print
+  printf("%d:\t%s\n", 0, u32_bit_string(x,8));
+#endif
+  for (i=1; i < MAX_PERIOD; i++) {
+    if (x & 1) 
+      x = (x >> 1) ^ poly;
+    else
+      x = (x >> 1);
+
+#if debug_print
+    /* print for a sanity check */
+    printf("%d:\t%s\n", i, u32_bit_string(x,8));
+#endif
+
+    /* check for return to original value */
+    if (x == 1)
+      return i;
+  }
+  return i;
+}
+
+/*
+ * weight distribution computes the weight distribution of the
+ * code generated by the polynomial poly
+ */
+
+#define MAX_LEN    8
+#define MAX_WEIGHT (1 << MAX_LEN)
+
+int A[MAX_WEIGHT+1];
+
+void
+weight_distribution2(uint32_t poly, int *A) {
+  int i;
+  uint32_t x;
+
+  /* zeroize array */
+  for (i=0; i < MAX_WEIGHT+1; i++)
+    A[i] = 0;
+
+  /* loop over all input sequences */
+  
+  
+  /* set lfsr to 1 */
+  x = 1;
+#if debug_print
+  printf("%d:\t%s\n", 0, u32_bit_string(x,8));
+#endif
+  for (i=1; i < MAX_PERIOD; i++) {
+    if (x & 1) 
+      x = (x >> 1) ^ poly;
+    else
+      x = (x >> 1);
+
+#if debug_print
+    /* print for a sanity check */
+    printf("%d:\t%s\n", i, u32_bit_string(x,8));
+#endif
+    
+    /* increment weight */
+    wt += (x & 1);
+
+    /* check for return to original value */
+    if (x == 1)
+      break;
+  }
+
+  /* set zero */
+  A[0] = 0;
+}
+
+
+void
+weight_distribution(uint32_t poly, int *A) {
+  int i;
+  uint32_t x;
+
+  /* zeroize array */
+  for (i=0; i < MAX_WEIGHT+1; i++)
+    A[i] = 0;
+
+  /* set lfsr to 1 */
+  x = 1;
+#if debug_print
+  printf("%d:\t%s\n", 0, u32_bit_string(x,8));
+#endif
+  for (i=1; i < MAX_PERIOD; i++) {
+    if (x & 1) 
+      x = (x >> 1) ^ poly;
+    else
+      x = (x >> 1);
+
+#if debug_print
+    /* print for a sanity check */
+    printf("%d:\t%s\n", i, u32_bit_string(x,8));
+#endif
+
+    /* compute weight, increment proper element */
+    A[weight(x)]++;
+
+    /* check for return to original value */
+    if (x == 1)
+      break;
+  }
+
+  /* set zero */
+  A[0] = 0;
+}
+
+
+
+
+int
+main () {
+
+  int i,j;
+  v32_t x;
+  v32_t p;
+
+  /* originally 0xaf */
+  p.value = 0x9;
+
+  printf("polynomial: %s\tperiod: %d\n",  
+ 	   u32_bit_string(p.value,8), period(p.value)); 
+ 
+   /* compute weight distribution */
+  weight_distribution(p.value, A);
+  
+  /* print weight distribution */
+  for (i=0; i <= 8; i++) {
+    printf("A[%d]: %d\n", i, A[i]);
+  }
+  
+#if 0
+  for (i=0; i < 39; i++) {
+     printf("polynomial: %s\tperiod: %d\n",  
+ 	   u32_bit_string(polynomials[i],8), period(polynomials[i])); 
+   
+     /* compute weight distribution */
+     weight_distribution(p.value, A);
+     
+     /* print weight distribution */
+     for (j=0; j <= 8; j++) {
+       printf("A[%d]: %d\n", j, A[j]);
+     }   
+  }
+#endif
+
+  { 
+    int bits = 8;
+    uint32_t y;
+    for (y=0; y < (1 << bits); y++) {
+      printf("polynomial: %s\tweight: %d\tperiod: %d\n", 
+	     u32_bit_string(y,bits), weight(y), period(y));
+      
+      /* compute weight distribution */
+      weight_distribution(y, A);
+      
+      /* print weight distribution */
+      for (j=0; j <= 8; j++) {
+	printf("A[%d]: %d\n", j, A[j]);
+      }     
+    }
+  }
+
+  return 0;
+}
diff --git a/test/rdbx_driver.c b/test/rdbx_driver.c
new file mode 100644
index 0000000..4991ba8
--- /dev/null
+++ b/test/rdbx_driver.c
@@ -0,0 +1,345 @@
+/*
+ * rdbx_driver.c
+ *
+ * driver for the rdbx implementation (replay database with extended range)
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>    /* for printf()          */
+#include "getopt_s.h" /* for local getopt()    */
+
+#include "rdbx.h"
+
+#ifdef ROC_TEST
+#error "rdbx_t won't work with ROC_TEST - bitmask same size as seq_median"
+#endif
+
+#include "ut_sim.h"
+
+err_status_t 
+test_replay_dbx(int num_trials, unsigned long ws);
+
+double
+rdbx_check_adds_per_second(int num_trials, unsigned long ws);
+
+void
+usage(char *prog_name) {
+  printf("usage: %s [ -t | -v ]\n", prog_name);
+  exit(255);
+}
+
+int
+main (int argc, char *argv[]) {
+  double rate;
+  err_status_t status;
+  char q;
+  unsigned do_timing_test = 0;
+  unsigned do_validation = 0;
+
+  /* process input arguments */
+  while (1) {
+    q = getopt_s(argc, argv, "tv");
+    if (q == -1) 
+      break;
+    switch (q) {
+    case 't':
+      do_timing_test = 1;
+      break;
+    case 'v':
+      do_validation = 1;
+      break;
+    default:
+      usage(argv[0]);
+    }    
+  }
+
+  printf("rdbx (replay database w/ extended range) test driver\n"
+	 "David A. McGrew\n"
+	 "Cisco Systems, Inc.\n");
+
+  if (!do_validation && !do_timing_test)
+    usage(argv[0]);
+
+  if (do_validation) {
+  printf("testing rdbx_t (ws=128)...\n");
+
+  status = test_replay_dbx(1 << 12, 128);
+    if (status) {
+      printf("failed\n");
+      exit(1);
+    }
+    printf("passed\n");
+
+  printf("testing rdbx_t (ws=1024)...\n");
+
+  status = test_replay_dbx(1 << 12, 1024);
+    if (status) {
+      printf("failed\n");
+      exit(1);
+    }
+    printf("passed\n");
+  }
+
+  if (do_timing_test) {
+	  rate = rdbx_check_adds_per_second(1 << 18, 128);
+    printf("rdbx_check/replay_adds per second (ws=128): %e\n", rate);
+	  rate = rdbx_check_adds_per_second(1 << 18, 1024);
+    printf("rdbx_check/replay_adds per second (ws=1024): %e\n", rate);
+  }
+  
+  return 0;
+}
+
+void
+print_rdbx(rdbx_t *rdbx) {
+  char buf[2048];
+  printf("rdbx: {%llu, %s}\n",
+	 (unsigned long long)(rdbx->index),
+	 bitvector_bit_string(&rdbx->bitmask, buf, sizeof(buf))
+);
+}
+
+
+/*
+ * rdbx_check_add(rdbx, idx) checks a known-to-be-good idx against
+ * rdbx, then adds it.  if a failure is detected (i.e., the check
+ * indicates that the value is already in rdbx) then
+ * err_status_algo_fail is returned.
+ *
+ */
+
+err_status_t
+rdbx_check_add(rdbx_t *rdbx, uint32_t idx) {
+  int delta;
+  xtd_seq_num_t est;
+  
+  delta = index_guess(&rdbx->index, &est, idx);
+  
+  if (rdbx_check(rdbx, delta) != err_status_ok) {
+    printf("replay_check failed at index %u\n", idx);
+    return err_status_algo_fail;
+  }
+
+  /*
+   * in practice, we'd authenticate the packet containing idx, using
+   * the estimated value est, at this point
+   */
+  
+  if (rdbx_add_index(rdbx, delta) != err_status_ok) {
+    printf("rdbx_add_index failed at index %u\n", idx);
+    return err_status_algo_fail;
+  }  
+
+  return err_status_ok;
+}
+
+/*
+ * rdbx_check_expect_failure(rdbx_t *rdbx, uint32_t idx)
+ * 
+ * checks that a sequence number idx is in the replay database
+ * and thus will be rejected
+ */
+
+err_status_t
+rdbx_check_expect_failure(rdbx_t *rdbx, uint32_t idx) {
+  int delta;
+  xtd_seq_num_t est;
+  err_status_t status;
+
+  delta = index_guess(&rdbx->index, &est, idx);
+
+  status = rdbx_check(rdbx, delta);
+  if (status == err_status_ok) {
+    printf("delta: %d ", delta);
+    printf("replay_check failed at index %u (false positive)\n", idx);
+    return err_status_algo_fail; 
+  }
+
+  return err_status_ok;
+}
+
+err_status_t
+rdbx_check_unordered(rdbx_t *rdbx, uint32_t idx) {
+  err_status_t rstat;
+
+  rstat = rdbx_check(rdbx, idx);
+  if ((rstat != err_status_ok) && (rstat != err_status_replay_old)) {
+    printf("replay_check_unordered failed at index %u\n", idx);
+    return err_status_algo_fail;
+  }
+  return err_status_ok;
+}
+
+err_status_t
+test_replay_dbx(int num_trials, unsigned long ws) {
+  rdbx_t rdbx;
+  uint32_t idx, ircvd;
+  ut_connection utc;
+  err_status_t status;
+  int num_fp_trials;
+
+  status = rdbx_init(&rdbx, ws);
+  if (status) {
+    printf("replay_init failed with error code %d\n", status);
+    exit(1);
+  }
+
+  /*
+   *  test sequential insertion 
+   */
+  printf("\ttesting sequential insertion...");
+  for (idx=0; idx < (uint32_t)num_trials; idx++) {
+    status = rdbx_check_add(&rdbx, idx);
+    if (status)
+      return status;
+  }
+  printf("passed\n");
+
+  /*
+   *  test for false positives by checking all of the index
+   *  values which we've just added
+   *
+   * note that we limit the number of trials here, since allowing the
+   * rollover counter to roll over would defeat this test
+   */
+  num_fp_trials = num_trials % 0x10000;
+  if (num_fp_trials == 0) {
+    printf("warning: no false positive tests performed\n");
+  }
+  printf("\ttesting for false positives...");
+  for (idx=0; idx < (uint32_t)num_fp_trials; idx++) {
+    status = rdbx_check_expect_failure(&rdbx, idx);
+    if (status)
+      return status;
+  }
+  printf("passed\n");
+
+  /* re-initialize */
+  rdbx_uninit(&rdbx);
+
+  if (rdbx_init(&rdbx, ws) != err_status_ok) {
+    printf("replay_init failed\n");
+    return err_status_init_fail;
+  }
+
+  /*
+   * test non-sequential insertion 
+   *
+   * this test covers only fase negatives, since the values returned
+   * by ut_next_index(...) are distinct
+   */
+  ut_init(&utc);
+
+  printf("\ttesting non-sequential insertion...");  
+  for (idx=0; idx < (uint32_t)num_trials; idx++) {
+    ircvd = ut_next_index(&utc);
+    status = rdbx_check_unordered(&rdbx, ircvd);
+    if (status)
+      return status;
+  }
+  printf("passed\n");
+
+  /*
+   * test a replay condition close to zero.
+   */
+  rdbx_uninit(&rdbx);
+
+  if (rdbx_init(&rdbx, ws) != err_status_ok) {
+    printf("replay_init failed\n");
+    return err_status_init_fail;
+  }
+
+  printf("\ttesting replay close to zero...");
+  status = rdbx_check_add(&rdbx, 1);
+  if (status)
+    return status;
+  status = rdbx_check_expect_failure(&rdbx, 64500);
+  if (status)
+    return status;
+  status = rdbx_check_add(&rdbx, 2);
+  if (status)
+    return status;
+  printf("passed\n");
+
+  rdbx_uninit(&rdbx);
+
+  return err_status_ok;
+}
+
+
+
+#include <time.h>       /* for clock()  */
+#include <stdlib.h>     /* for random() */
+
+double
+rdbx_check_adds_per_second(int num_trials, unsigned long ws) {
+  uint32_t i;
+  int delta;
+  rdbx_t rdbx;
+  xtd_seq_num_t est;
+  clock_t timer;
+  int failures;                    /* count number of failures        */
+  
+  if (rdbx_init(&rdbx, ws) != err_status_ok) {
+    printf("replay_init failed\n");
+    exit(1);
+  }  
+
+  failures = 0;
+  timer = clock();
+  for(i=0; i < (uint32_t)num_trials; i++) {
+    
+    delta = index_guess(&rdbx.index, &est, i);
+    
+    if (rdbx_check(&rdbx, delta) != err_status_ok) 
+      ++failures;
+    else
+      if (rdbx_add_index(&rdbx, delta) != err_status_ok)
+	++failures;
+  }
+  timer = clock() - timer;
+
+  printf("number of failures: %d \n", failures);
+
+  rdbx_uninit(&rdbx);
+
+  return (double) CLOCKS_PER_SEC * num_trials / timer;
+}
diff --git a/test/replay_driver.c b/test/replay_driver.c
new file mode 100644
index 0000000..369a77a
--- /dev/null
+++ b/test/replay_driver.c
@@ -0,0 +1,209 @@
+/*
+ * replay_driver.c
+ *
+ * A driver for the replay_database implementation
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>
+
+#include "rdb.h"
+#include "ut_sim.h"
+
+/*
+ * num_trials defines the number of trials that are used in the
+ * validation functions below
+ */
+
+unsigned num_trials = 1 << 16;
+
+err_status_t
+test_rdb_db(void);
+
+double
+rdb_check_adds_per_second(void);
+
+int
+main (void) {
+  err_status_t err;
+  
+  printf("testing anti-replay database (rdb_t)...\n");
+  err = test_rdb_db();
+  if (err) {
+    printf("failed\n");
+    exit(1);
+  }
+  printf("done\n");
+
+  printf("rdb_check/rdb_adds per second: %e\n",
+	 rdb_check_adds_per_second());
+  
+  return 0;
+}
+
+
+void
+print_rdb(rdb_t *rdb) {
+  printf("rdb: {%u, %s}\n", rdb->window_start, v128_bit_string(&rdb->bitmask));
+}
+
+err_status_t
+rdb_check_add(rdb_t *rdb, uint32_t idx) {
+
+  if (rdb_check(rdb, idx) != err_status_ok) {
+    printf("rdb_check failed at index %u\n", idx);
+    return err_status_fail;
+  }
+  if (rdb_add_index(rdb, idx) != err_status_ok) {
+    printf("rdb_add_index failed at index %u\n", idx);
+    return err_status_fail;
+  }
+
+  return err_status_ok;
+}
+
+err_status_t
+rdb_check_expect_failure(rdb_t *rdb, uint32_t idx) {
+  err_status_t err;
+  
+  err = rdb_check(rdb, idx);
+  if ((err != err_status_replay_old) && (err != err_status_replay_fail)) {
+    printf("rdb_check failed at index %u (false positive)\n", idx);
+    return err_status_fail;
+  }
+
+  return err_status_ok;
+}
+
+err_status_t
+rdb_check_unordered(rdb_t *rdb, uint32_t idx) {
+  err_status_t rstat;
+
+ /* printf("index: %u\n", idx); */
+  rstat = rdb_check(rdb, idx);
+  if ((rstat != err_status_ok) && (rstat != err_status_replay_old)) {
+    printf("rdb_check_unordered failed at index %u\n", idx);
+    return rstat;
+  }
+  return err_status_ok;
+}
+
+err_status_t
+test_rdb_db() {
+  rdb_t rdb;
+  uint32_t idx, ircvd;
+  ut_connection utc;
+  err_status_t err;
+
+  if (rdb_init(&rdb) != err_status_ok) {
+    printf("rdb_init failed\n");
+    return err_status_init_fail;
+  }
+
+  /* test sequential insertion */
+  for (idx=0; idx < num_trials; idx++) {
+    err = rdb_check_add(&rdb, idx);
+    if (err) 
+      return err;
+  }
+
+  /* test for false positives */
+  for (idx=0; idx < num_trials; idx++) {
+    err = rdb_check_expect_failure(&rdb, idx);
+    if (err) 
+      return err;
+  }
+
+  /* re-initialize */
+  if (rdb_init(&rdb) != err_status_ok) {
+    printf("rdb_init failed\n");
+    return err_status_fail;
+  }
+
+  /* test non-sequential insertion */
+  ut_init(&utc);
+  
+  for (idx=0; idx < num_trials; idx++) {
+    ircvd = ut_next_index(&utc);
+    err = rdb_check_unordered(&rdb, ircvd);
+    if (err) 
+      return err;
+  }
+
+  return err_status_ok;
+}
+
+#include <time.h>       /* for clock()  */
+#include <stdlib.h>     /* for random() */
+
+#define REPLAY_NUM_TRIALS 10000000
+
+double
+rdb_check_adds_per_second(void) {
+  uint32_t i;
+  rdb_t rdb;
+  clock_t timer;
+  int failures;                    /* count number of failures        */
+  
+  if (rdb_init(&rdb) != err_status_ok) {
+    printf("rdb_init failed\n");
+    exit(1);
+  }  
+
+  timer = clock();
+  for(i=0; i < REPLAY_NUM_TRIALS; i+=3) {
+    if (rdb_check(&rdb, i+2) != err_status_ok)
+      ++failures;
+    if (rdb_add_index(&rdb, i+2) != err_status_ok)
+      ++failures;
+    if (rdb_check(&rdb, i+1) != err_status_ok)
+      ++failures;
+    if (rdb_add_index(&rdb, i+1) != err_status_ok)
+      ++failures;
+    if (rdb_check(&rdb, i) != err_status_ok)
+      ++failures;
+    if (rdb_add_index(&rdb, i) != err_status_ok)
+      ++failures;
+  }
+  timer = clock() - timer;
+
+  return (double) CLOCKS_PER_SEC * REPLAY_NUM_TRIALS / timer;
+}
diff --git a/test/roc_driver.c b/test/roc_driver.c
new file mode 100644
index 0000000..396c9a7
--- /dev/null
+++ b/test/roc_driver.c
@@ -0,0 +1,165 @@
+/*
+ * roc_driver.c
+ *
+ * test driver for rollover counter replay implementation
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include <stdio.h>
+
+/*
+ * defining ROC_TEST causes small datatypes to be used in
+ * xtd_seq_num_t - this allows the functions to be exhaustively tested.
+ */
+#if ROC_NEEDS_TO_BE_TESTED
+#define ROC_TEST     
+#endif
+
+#include "rdbx.h"
+#include "ut_sim.h"
+
+err_status_t
+roc_test(int num_trials);
+
+int
+main (void) {
+  err_status_t status;
+
+  printf("rollover counter test driver\n"
+	 "David A. McGrew\n"
+	 "Cisco Systems, Inc.\n");
+  
+  printf("testing index functions...");
+  status = roc_test(1 << 18);
+  if (status) {
+    printf("failed\n");
+    exit(status);
+  }
+  printf("passed\n");
+  return 0;
+}
+
+
+#define ROC_VERBOSE 0
+
+err_status_t
+roc_test(int num_trials) {
+  xtd_seq_num_t local, est, ref;
+  ut_connection utc;
+  int i, num_bad_est = 0;
+  int delta;
+  uint32_t ircvd;
+  double failure_rate;
+
+  index_init(&local);
+  index_init(&ref);
+  index_init(&est);
+
+  printf("\n\ttesting sequential insertion...");
+  for (i=0; i < 2048; i++) {
+    delta = index_guess(&local, &est, (uint16_t) ref);
+#if ROC_VERBOSE
+    printf("%lld, %lld, %d\n", ref, est,  i);
+#endif
+    if (ref != est) {
+#if ROC_VERBOSE
+      printf(" *bad estimate*\n");
+#endif
+      ++num_bad_est;
+    }
+    index_advance(&ref, 1);
+  }
+  failure_rate = (double) num_bad_est / num_trials;
+  if (failure_rate > 0.01) {
+    printf("error: failure rate too high (%d bad estimates in %d trials)\n", 
+	   num_bad_est, num_trials);
+    return err_status_algo_fail;
+  }
+  printf("done\n");
+
+
+  printf("\ttesting non-sequential insertion...");
+  index_init(&local);
+  index_init(&ref);
+  index_init(&est);
+  ut_init(&utc);
+  
+  for (i=0; i < num_trials; i++) {
+    
+    /* get next seq num from unreliable transport simulator */
+    ircvd = ut_next_index(&utc);
+    
+    /* set ref to value of ircvd */
+    ref = ircvd; 
+
+    /* estimate index based on low bits of ircvd */
+    delta = index_guess(&local, &est, (uint16_t) ref);
+#if ROC_VERBOSE
+    printf("ref: %lld, local: %lld, est: %lld, ircvd: %d, delta: %d\n", 
+	   ref, local, est, ircvd, delta);
+#endif
+    
+    /* now update local xtd_seq_num_t as necessary */
+    if (delta > 0) 
+      index_advance(&local, delta);
+
+    if (ref != est) {
+#if ROC_VERBOSE
+      printf(" *bad estimate*\n");
+#endif
+      /* record failure event */
+      ++num_bad_est;
+      
+      /* reset local value to correct value */
+      local = ref;
+    }
+  }
+  failure_rate = (double) num_bad_est / num_trials;
+  if (failure_rate > 0.01) {
+    printf("error: failure rate too high (%d bad estimates in %d trials)\n", 
+	   num_bad_est, num_trials);
+    return err_status_algo_fail;
+  }
+  printf("done\n");
+
+  return err_status_ok;
+}
diff --git a/test/rtp.c b/test/rtp.c
new file mode 100644
index 0000000..69968f3
--- /dev/null
+++ b/test/rtp.c
@@ -0,0 +1,167 @@
+/*
+ * rtp.c
+ *
+ * library functions for the real-time transport protocol
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+
+#include "rtp_priv.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+
+#define PRINT_DEBUG    0    /* set to 1 to print out debugging data */
+#define VERBOSE_DEBUG  0    /* set to 1 to print out more data      */
+
+unsigned int
+rtp_sendto(rtp_sender_t sender, const void* msg, int len) {
+  int octets_sent;
+  err_status_t stat;
+  int pkt_len = len + RTP_HEADER_LEN;
+
+  /* marshal data */
+  strncpy(sender->message.body, msg, len);
+  
+  /* update header */
+  sender->message.header.seq = ntohs(sender->message.header.seq) + 1;
+  sender->message.header.seq = htons(sender->message.header.seq);
+  sender->message.header.ts = ntohl(sender->message.header.ts) + 1;
+  sender->message.header.ts = htonl(sender->message.header.ts);
+  
+  /* apply srtp */
+  stat = srtp_protect(sender->srtp_ctx, &sender->message.header, &pkt_len);
+  if (stat) {
+#if PRINT_DEBUG
+    fprintf(stderr, "error: srtp protection failed with code %d\n", stat);
+#endif
+    return -1;
+  }
+#if VERBOSE_DEBUG
+  srtp_print_packet(&sender->message.header, pkt_len);
+#endif
+  octets_sent = sendto(sender->socket, (void*)&sender->message,
+		       pkt_len, 0, (struct sockaddr *)&sender->addr,
+		       sizeof (struct sockaddr_in));
+
+  if (octets_sent != pkt_len) {
+#if PRINT_DEBUG
+    fprintf(stderr, "error: couldn't send message %s", (char *)msg);
+    perror("");
+#endif
+  }
+
+  return octets_sent;
+}
+
+unsigned int
+rtp_recvfrom(rtp_receiver_t receiver, void *msg, int *len) {
+  int octets_recvd;
+  err_status_t stat;
+  
+  octets_recvd = recvfrom(receiver->socket, (void *)&receiver->message,
+			 *len, 0, (struct sockaddr *) NULL, 0);
+
+  /* verify rtp header */
+  if (receiver->message.header.version != 2) {
+    *len = 0;
+    return -1;
+  }
+
+#if PRINT_DEBUG
+  fprintf(stderr, "%d octets received from SSRC %u\n",
+	  octets_recvd, receiver->message.header.ssrc);
+#endif
+#if VERBOSE_DEBUG
+  srtp_print_packet(&receiver->message.header, octets_recvd);
+#endif
+
+  /* apply srtp */
+  stat = srtp_unprotect(receiver->srtp_ctx,
+			&receiver->message.header, &octets_recvd);
+  if (stat) {
+    fprintf(stderr,
+	    "error: srtp unprotection failed with code %d%s\n", stat,
+	    stat == err_status_replay_fail ? " (replay check failed)" :
+	    stat == err_status_auth_fail ? " (auth check failed)" : "");
+    return -1;
+  }
+  strncpy(msg, receiver->message.body, octets_recvd);
+  
+  return octets_recvd;
+}
+
+int
+rtp_sender_init(rtp_sender_t sender, 
+		int socket, 
+		struct sockaddr_in addr,
+		unsigned int ssrc) {
+
+  /* set header values */
+  sender->message.header.ssrc    = htonl(ssrc);
+  sender->message.header.ts      = 0;
+  sender->message.header.seq     = (uint16_t) rand();
+  sender->message.header.m       = 0;
+  sender->message.header.pt      = 0x1;
+  sender->message.header.version = 2;
+  sender->message.header.p       = 0;
+  sender->message.header.x       = 0;
+  sender->message.header.cc      = 0;
+
+  /* set other stuff */
+  sender->socket = socket;
+  sender->addr = addr;
+
+  return 0;
+}
+
+int
+rtp_receiver_init(rtp_receiver_t rcvr, 
+		  int socket, 
+		  struct sockaddr_in addr,
+		  unsigned int ssrc) {
+  
+  /* set header values */
+  rcvr->message.header.ssrc    = htonl(ssrc);
+  rcvr->message.header.ts      = 0;
+  rcvr->message.header.seq     = 0;
+  rcvr->message.header.m       = 0;
+  rcvr->message.header.pt      = 0x1;
+  rcvr->message.header.version = 2;
+  rcvr->message.header.p       = 0;
+  rcvr->message.header.x       = 0;
+  rcvr->message.header.cc      = 0;
+
+  /* set other stuff */
+  rcvr->socket = socket;
+  rcvr->addr = addr;
+
+  return 0;
+}
+
+int
+rtp_sender_init_srtp(rtp_sender_t sender, const srtp_policy_t *policy) {
+  return srtp_create(&sender->srtp_ctx, policy);
+}
+
+int
+rtp_receiver_init_srtp(rtp_receiver_t sender, const srtp_policy_t *policy) {
+  return srtp_create(&sender->srtp_ctx, policy);
+}
+
+rtp_sender_t 
+rtp_sender_alloc() {
+  return (rtp_sender_t)malloc(sizeof(rtp_sender_ctx_t));
+}
+
+rtp_receiver_t 
+rtp_receiver_alloc() {
+  return (rtp_receiver_t)malloc(sizeof(rtp_receiver_ctx_t));
+}
diff --git a/test/rtpw.c b/test/rtpw.c
new file mode 100644
index 0000000..b0cc048
--- /dev/null
+++ b/test/rtpw.c
@@ -0,0 +1,523 @@
+/*
+ * rtpw.c
+ *
+ * rtp word sender/receiver
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ *
+ * This app is a simple RTP application intended only for testing
+ * libsrtp.  It reads one word at a time from /usr/dict/words (or
+ * whatever file is specified as DICT_FILE), and sends one word out
+ * each USEC_RATE microseconds.  Secure RTP protections can be
+ * applied.  See the usage() function for more details.
+ *
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "datatypes.h"
+#include "getopt_s.h"       /* for local getopt()  */
+
+#include <stdio.h>          /* for printf, fprintf */
+#include <stdlib.h>         /* for atoi()          */
+#include <errno.h>
+#include <unistd.h>         /* for close()         */
+
+#include <string.h>         /* for strncpy()       */
+#include <time.h>	    /* for usleep()        */
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#elif defined HAVE_WINSOCK2_H
+# include <winsock2.h>
+# include <ws2tcpip.h>
+# define RTPW_USE_WINSOCK2	1
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+
+#include "srtp.h"           
+#include "rtp.h"
+
+#ifdef RTPW_USE_WINSOCK2
+# define DICT_FILE        "words.txt"
+#else
+# define DICT_FILE        "/usr/share/dict/words"
+#endif
+#define USEC_RATE        (5e5)
+#define MAX_WORD_LEN     128  
+#define ADDR_IS_MULTICAST(a) IN_MULTICAST(htonl(a))
+#define MAX_KEY_LEN      64
+#define MASTER_KEY_LEN   30
+
+
+#ifndef HAVE_USLEEP
+# ifdef HAVE_WINDOWS_H
+#  define usleep(us)	Sleep((us)/1000)
+# else
+#  define usleep(us)	sleep((us)/1000000)
+# endif
+#endif
+
+
+/*
+ * the function usage() prints an error message describing how this
+ * program should be called, then calls exit()
+ */
+
+void
+usage(char *prog_name);
+
+/*
+ * leave_group(...) de-registers from a multicast group
+ */
+
+void
+leave_group(int sock, struct ip_mreq mreq, char *name);
+
+
+/*
+ * program_type distinguishes the [s]rtp sender and receiver cases
+ */
+
+typedef enum { sender, receiver, unknown } program_type;
+
+int
+main (int argc, char *argv[]) {
+  char *dictfile = DICT_FILE;
+  FILE *dict;
+  char word[MAX_WORD_LEN];
+  int sock, ret;
+  struct in_addr rcvr_addr;
+  struct sockaddr_in name;
+  struct ip_mreq mreq;
+#if BEW
+  struct sockaddr_in local;
+#endif 
+  program_type prog_type = unknown;
+  sec_serv_t sec_servs = sec_serv_none;
+  unsigned char ttl = 5;
+  int c;
+  char *input_key = NULL;
+  char *address = NULL;
+  char key[MAX_KEY_LEN];
+  unsigned short port = 0;
+  rtp_sender_t snd;
+  srtp_policy_t policy;
+  err_status_t status;
+  int len;
+  int do_list_mods = 0;
+  uint32_t ssrc = 0xdeadbeef; /* ssrc value hardcoded for now */
+#ifdef RTPW_USE_WINSOCK2
+  WORD wVersionRequested = MAKEWORD(2, 0);
+  WSADATA wsaData;
+
+  ret = WSAStartup(wVersionRequested, &wsaData);
+  if (ret != 0) {
+    fprintf(stderr, "error: WSAStartup() failed: %d\n", ret);
+    exit(1);
+  }
+#endif
+
+  /* initialize srtp library */
+  status = srtp_init();
+  if (status) {
+    printf("error: srtp initialization failed with error code %d\n", status);
+    exit(1);
+  }
+
+  /* check args */
+  while (1) {
+    c = getopt_s(argc, argv, "k:rsaeld:");
+    if (c == -1) {
+      break;
+    }
+    switch (c) {
+    case 'k':
+      input_key = optarg_s;
+      break;
+    case 'e':
+      sec_servs |= sec_serv_conf;
+      break;
+    case 'a':
+      sec_servs |= sec_serv_auth;
+      break;
+    case 'r':
+      prog_type = receiver;
+      break;
+    case 's':
+      prog_type = sender;
+      break;
+    case 'd':
+      status = crypto_kernel_set_debug_module(optarg_s, 1);
+      if (status) {
+        printf("error: set debug module (%s) failed\n", optarg_s);
+        exit(1);
+      }
+      break;
+    case 'l':
+      do_list_mods = 1;
+      break;
+    default:
+      usage(argv[0]);
+    }
+  }
+
+  if (prog_type == unknown) {
+    if (do_list_mods) {
+      status = crypto_kernel_list_debug_modules();
+      if (status) {
+	printf("error: list of debug modules failed\n");
+	exit(1);
+      }
+      return 0;
+    } else {
+      printf("error: neither sender [-s] nor receiver [-r] specified\n");
+      usage(argv[0]);
+    }
+  }
+   
+  if ((sec_servs && !input_key) || (!sec_servs && input_key)) {
+    /* 
+     * a key must be provided if and only if security services have
+     * been requested 
+     */
+    usage(argv[0]);
+  }
+    
+  if (argc != optind_s + 2) {
+    /* wrong number of arguments */
+    usage(argv[0]);
+  }
+
+  /* get address from arg */
+  address = argv[optind_s++];
+
+  /* get port from arg */
+  port = atoi(argv[optind_s++]);
+
+  /* set address */
+#ifdef HAVE_INET_ATON
+  if (0 == inet_aton(address, &rcvr_addr)) {
+    fprintf(stderr, "%s: cannot parse IP v4 address %s\n", argv[0], address);
+    exit(1);
+  }
+  if (rcvr_addr.s_addr == INADDR_NONE) {
+    fprintf(stderr, "%s: address error", argv[0]);
+    exit(1);
+  }
+#else
+  rcvr_addr.s_addr = inet_addr(address);
+  if (0xffffffff == rcvr_addr.s_addr) {
+    fprintf(stderr, "%s: cannot parse IP v4 address %s\n", argv[0], address);
+    exit(1);
+  }
+#endif
+
+  /* open socket */
+  sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
+  if (sock < 0) {
+    int err;
+#ifdef RTPW_USE_WINSOCK2
+    err = WSAGetLastError();
+#else
+    err = errno;
+#endif
+    fprintf(stderr, "%s: couldn't open socket: %d\n", argv[0], err);
+    exit(1);
+  }
+
+  name.sin_addr   = rcvr_addr;    
+  name.sin_family = PF_INET;
+  name.sin_port   = htons(port);
+ 
+  if (ADDR_IS_MULTICAST(rcvr_addr.s_addr)) {
+    if (prog_type == sender) {
+      ret = setsockopt(sock, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, 
+  	               sizeof(ttl));
+      if (ret < 0) {
+	fprintf(stderr, "%s: Failed to set TTL for multicast group", argv[0]);
+	perror("");
+	exit(1);
+      }
+    }
+
+    mreq.imr_multiaddr.s_addr = rcvr_addr.s_addr;
+    mreq.imr_interface.s_addr = htonl(INADDR_ANY);
+    ret = setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, (void*)&mreq,
+		     sizeof(mreq));
+    if (ret < 0) {
+      fprintf(stderr, "%s: Failed to join multicast group", argv[0]);
+      perror("");
+      exit(1);
+    }
+  }
+
+  /* report security services selected on the command line */
+  printf("security services: ");
+  if (sec_servs & sec_serv_conf)
+    printf("confidentiality ");
+  if (sec_servs & sec_serv_auth)
+    printf("message authentication");
+  if (sec_servs == sec_serv_none)
+    printf("none");
+  printf("\n");
+  
+  /* set up the srtp policy and master key */    
+  if (sec_servs) {
+    /* 
+     * create policy structure, using the default mechanisms but 
+     * with only the security services requested on the command line,
+     * using the right SSRC value
+     */
+    switch (sec_servs) {
+    case sec_serv_conf_and_auth:
+      crypto_policy_set_rtp_default(&policy.rtp);
+      crypto_policy_set_rtcp_default(&policy.rtcp);
+      break;
+    case sec_serv_conf:
+      crypto_policy_set_aes_cm_128_null_auth(&policy.rtp);
+      crypto_policy_set_rtcp_default(&policy.rtcp);      
+      break;
+    case sec_serv_auth:
+      crypto_policy_set_null_cipher_hmac_sha1_80(&policy.rtp);
+      crypto_policy_set_rtcp_default(&policy.rtcp);
+      break;
+    default:
+      printf("error: unknown security service requested\n");
+      return -1;
+    } 
+    policy.ssrc.type  = ssrc_specific;
+    policy.ssrc.value = ssrc;
+    policy.key  = (uint8_t *) key;
+    policy.next = NULL;
+    policy.window_size = 128;
+    policy.allow_repeat_tx = 0;
+    policy.rtp.sec_serv = sec_servs;
+    policy.rtcp.sec_serv = sec_serv_none;  /* we don't do RTCP anyway */
+
+    /*
+     * read key from hexadecimal on command line into an octet string
+     */
+    len = hex_string_to_octet_string(key, input_key, MASTER_KEY_LEN*2);
+    
+    /* check that hex string is the right length */
+    if (len < MASTER_KEY_LEN*2) {
+      fprintf(stderr, 
+	      "error: too few digits in key/salt "
+	      "(should be %d hexadecimal digits, found %d)\n",
+	      MASTER_KEY_LEN*2, len);
+      exit(1);    
+    } 
+    if (strlen(input_key) > MASTER_KEY_LEN*2) {
+      fprintf(stderr, 
+	      "error: too many digits in key/salt "
+	      "(should be %d hexadecimal digits, found %u)\n",
+	      MASTER_KEY_LEN*2, (unsigned)strlen(input_key));
+      exit(1);    
+    }
+    
+    printf("set master key/salt to %s/", octet_string_hex_string(key, 16));
+    printf("%s\n", octet_string_hex_string(key+16, 14));
+  
+  } else {
+    /*
+     * we're not providing security services, so set the policy to the
+     * null policy
+     *
+     * Note that this policy does not conform to the SRTP
+     * specification, since RTCP authentication is required.  However,
+     * the effect of this policy is to turn off SRTP, so that this
+     * application is now a vanilla-flavored RTP application.
+     */
+    policy.key                 = (uint8_t *)key;
+    policy.ssrc.type           = ssrc_specific;
+    policy.ssrc.value          = ssrc;
+    policy.rtp.cipher_type     = NULL_CIPHER;
+    policy.rtp.cipher_key_len  = 0; 
+    policy.rtp.auth_type       = NULL_AUTH;
+    policy.rtp.auth_key_len    = 0;
+    policy.rtp.auth_tag_len    = 0;
+    policy.rtp.sec_serv        = sec_serv_none;   
+    policy.rtcp.cipher_type    = NULL_CIPHER;
+    policy.rtcp.cipher_key_len = 0; 
+    policy.rtcp.auth_type      = NULL_AUTH;
+    policy.rtcp.auth_key_len   = 0;
+    policy.rtcp.auth_tag_len   = 0;
+    policy.rtcp.sec_serv       = sec_serv_none;   
+    policy.window_size         = 0;
+    policy.allow_repeat_tx     = 0;
+    policy.next                = NULL;
+  }
+
+  if (prog_type == sender) {
+
+#if BEW
+    /* bind to local socket (to match crypto policy, if need be) */
+    memset(&local, 0, sizeof(struct sockaddr_in));
+    local.sin_addr.s_addr = htonl(INADDR_ANY);
+    local.sin_port = htons(port);
+    ret = bind(sock, (struct sockaddr *) &local, sizeof(struct sockaddr_in));
+    if (ret < 0) {
+      fprintf(stderr, "%s: bind failed\n", argv[0]);
+      perror("");
+      exit(1); 
+    }
+#endif /* BEW */
+
+    /* initialize sender's rtp and srtp contexts */
+    snd = rtp_sender_alloc();
+    if (snd == NULL) {
+      fprintf(stderr, "error: malloc() failed\n");
+      exit(1);
+    }
+    rtp_sender_init(snd, sock, name, ssrc); 
+    status = rtp_sender_init_srtp(snd, &policy);
+    if (status) {
+      fprintf(stderr, 
+	      "error: srtp_create() failed with code %d\n", 
+	      status);
+      exit(1);
+    }
+ 
+    /* open dictionary */
+    dict = fopen (dictfile, "r");
+    if (dict == NULL) {
+      fprintf(stderr, "%s: couldn't open file %s\n", argv[0], dictfile);
+      if (ADDR_IS_MULTICAST(rcvr_addr.s_addr)) {
+  	leave_group(sock, mreq, argv[0]);
+      }
+      exit(1);
+    }
+          
+    /* read words from dictionary, then send them off */
+    while (fgets(word, MAX_WORD_LEN, dict) != NULL) { 
+      len = strlen(word) + 1;  /* plus one for null */
+      
+      if (len > MAX_WORD_LEN) 
+	printf("error: word %s too large to send\n", word);
+      else {
+	rtp_sendto(snd, word, len);
+        printf("sending word: %s", word);
+      }
+      usleep(USEC_RATE);
+    }
+    
+  } else  { /* prog_type == receiver */
+    rtp_receiver_t rcvr;
+        
+    if (bind(sock, (struct sockaddr *)&name, sizeof(name)) < 0) {
+      close(sock);
+      fprintf(stderr, "%s: socket bind error\n", argv[0]);
+      perror(NULL);
+      if (ADDR_IS_MULTICAST(rcvr_addr.s_addr)) {
+    	leave_group(sock, mreq, argv[0]);
+      }
+      exit(1);
+    }
+
+    rcvr = rtp_receiver_alloc();
+    if (rcvr == NULL) {
+      fprintf(stderr, "error: malloc() failed\n");
+      exit(1);
+    }
+    rtp_receiver_init(rcvr, sock, name, ssrc);
+    status = rtp_receiver_init_srtp(rcvr, &policy);
+    if (status) {
+      fprintf(stderr, 
+	      "error: srtp_create() failed with code %d\n", 
+	      status);
+      exit(1);
+    }
+
+    /* get next word and loop */
+    while (1) {
+      len = MAX_WORD_LEN;
+      if (rtp_recvfrom(rcvr, word, &len) > -1)
+	printf("\tword: %s", word);
+    }
+      
+  } 
+
+  if (ADDR_IS_MULTICAST(rcvr_addr.s_addr)) {
+    leave_group(sock, mreq, argv[0]);
+  }
+
+#ifdef RTPW_USE_WINSOCK2
+  WSACleanup();
+#endif
+
+  return 0;
+}
+
+
+void
+usage(char *string) {
+
+  printf("usage: %s [-d <debug>]* [-k <key> [-a][-e]] "
+	 "[-s | -r] dest_ip dest_port\n"
+	 "or     %s -l\n"
+	 "where  -a use message authentication\n"
+	 "       -e use encryption\n"
+	 "       -k <key>  sets the srtp master key\n"
+	 "       -s act as rtp sender\n"
+	 "       -r act as rtp receiver\n"
+	 "       -l list debug modules\n"
+	 "       -d <debug> turn on debugging for module <debug>\n",
+	 string, string);
+  exit(1);
+  
+}
+
+
+void
+leave_group(int sock, struct ip_mreq mreq, char *name) {
+  int ret;
+
+  ret = setsockopt(sock, IPPROTO_IP, IP_DROP_MEMBERSHIP, (void*)&mreq,
+		   sizeof(mreq));
+  if (ret < 0) {
+	fprintf(stderr, "%s: Failed to leave multicast group", name);
+	perror("");
+  }
+}
+
diff --git a/test/rtpw_test.sh b/test/rtpw_test.sh
new file mode 100644
index 0000000..6587bf5
--- /dev/null
+++ b/test/rtpw_test.sh
@@ -0,0 +1,77 @@
+#!/bin/sh
+# 
+# usage: rtpw_test <rtpw_commands>
+# 
+# tests the rtpw sender and receiver functions
+
+RTPW=./rtpw
+DEST_PORT=9999
+DURATION=3
+
+key=2b2edc5034f61a72345ca5986d7bfd0189aa6dc2ecab32fd9af74df6dfc6
+
+ARGS="-k $key -ae"
+
+# First, we run "killall" to get rid of all existing rtpw processes.
+# This step also enables this script to clean up after itself; if this
+# script is interrupted after the rtpw processes are started but before
+# they are killed, those processes will linger.  Re-running the script
+# will get rid of them.
+
+killall rtpw 2>/dev/null
+
+if test -x $RTPW; then
+
+echo  $0 ": starting rtpw receiver process... "
+
+$RTPW $* $ARGS -r 0.0.0.0 $DEST_PORT  &
+
+receiver_pid=$!
+
+echo $0 ": receiver PID = $receiver_pid"
+
+sleep 1 
+
+# verify that the background job is running
+ps | grep -q $receiver_pid
+retval=$?
+echo $retval
+if [ $retval != 0 ]; then
+    echo $0 ": error"
+    exit 254
+fi
+
+echo  $0 ": starting rtpw sender process..."
+
+$RTPW $* $ARGS -s 127.0.0.1 $DEST_PORT  &
+
+sender_pid=$!
+
+echo $0 ": sender PID = $sender_pid"
+
+# verify that the background job is running
+ps | grep -q $sender_pid
+retval=$?
+echo $retval
+if [ $retval != 0 ]; then
+    echo $0 ": error"
+    exit 255
+fi
+
+sleep $DURATION
+
+kill $receiver_pid
+kill $sender_pid
+
+echo $0 ": done (test passed)"
+
+else 
+
+echo "error: can't find executable" $RTPW
+exit 1
+
+fi
+
+# EOF
+
+
diff --git a/test/srtp_driver.c b/test/srtp_driver.c
new file mode 100644
index 0000000..3c97072
--- /dev/null
+++ b/test/srtp_driver.c
@@ -0,0 +1,1566 @@
+/*
+ * srtp_driver.c
+ * 
+ * a test driver for libSRTP
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+/*
+ *	
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include <string.h>   /* for memcpy()          */
+#include <time.h>     /* for clock()           */
+#include <stdlib.h>   /* for malloc(), free()  */
+#include <stdio.h>    /* for print(), fflush() */
+#include "getopt_s.h" /* for local getopt()    */
+
+#include "srtp_priv.h"
+
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#elif defined HAVE_WINSOCK2_H
+# include <winsock2.h>
+#endif
+
+#define PRINT_REFERENCE_PACKET 1
+
+err_status_t
+srtp_validate(void);
+
+err_status_t
+srtp_create_big_policy(srtp_policy_t **list);
+
+err_status_t
+srtp_test_remove_stream(void);
+
+double
+srtp_bits_per_second(int msg_len_octets, const srtp_policy_t *policy);
+
+double
+srtp_rejections_per_second(int msg_len_octets, const srtp_policy_t *policy);
+
+void
+srtp_do_timing(const srtp_policy_t *policy);
+
+void
+srtp_do_rejection_timing(const srtp_policy_t *policy);
+
+err_status_t
+srtp_test(const srtp_policy_t *policy);
+
+err_status_t
+srtcp_test(const srtp_policy_t *policy);
+
+err_status_t
+srtp_session_print_policy(srtp_t srtp);
+
+err_status_t
+srtp_print_policy(const srtp_policy_t *policy); 
+
+char *
+srtp_packet_to_string(srtp_hdr_t *hdr, int packet_len);
+
+double
+mips_estimate(int num_trials, int *ignore);
+
+extern uint8_t test_key[30];
+
+void
+usage(char *prog_name) {
+  printf("usage: %s [ -t ][ -c ][ -v ][-d <debug_module> ]* [ -l ]\n"
+         "  -t         run timing test\n"
+	 "  -r         run rejection timing test\n"
+         "  -c         run codec timing test\n"
+         "  -v         run validation tests\n"
+         "  -d <mod>   turn on debugging module <mod>\n"
+         "  -l         list debugging modules\n", prog_name);
+  exit(1);
+}
+
+/*
+ * The policy_array is a null-terminated array of policy structs. it
+ * is declared at the end of this file
+ */
+
+extern const srtp_policy_t *policy_array[];
+
+
+/* the wildcard_policy is declared below; it has a wildcard ssrc */
+
+extern const srtp_policy_t wildcard_policy;
+
+/*
+ * mod_driver debug module - debugging module for this test driver
+ *
+ * we use the crypto_kernel debugging system in this driver, which 
+ * makes the interface uniform and increases portability
+ */ 
+
+debug_module_t mod_driver = {
+  0,                  /* debugging is off by default */
+  "driver"            /* printable name for module   */
+};
+
+int
+main (int argc, char *argv[]) {
+  int q;
+  unsigned do_timing_test    = 0;
+  unsigned do_rejection_test = 0;
+  unsigned do_codec_timing   = 0;
+  unsigned do_validation     = 0;
+  unsigned do_list_mods      = 0;
+  err_status_t status;
+
+  /* 
+   * verify that the compiler has interpreted the header data
+   * structure srtp_hdr_t correctly
+   */
+  if (sizeof(srtp_hdr_t) != 12) {
+     printf("error: srtp_hdr_t has incorrect size"
+	    "(size is %ld bytes, expected 12)\n", 
+	    (long)sizeof(srtp_hdr_t));
+    exit(1);
+  }
+
+  /* initialize srtp library */
+  status = srtp_init();
+  if (status) {
+    printf("error: srtp init failed with error code %d\n", status);
+    exit(1);
+  }
+
+  /*  load srtp_driver debug module */
+  status = crypto_kernel_load_debug_module(&mod_driver);
+    if (status) {
+    printf("error: load of srtp_driver debug module failed "
+           "with error code %d\n", status);
+    exit(1);
+  }
+
+  /* process input arguments */
+  while (1) {
+    q = getopt_s(argc, argv, "trcvld:");
+    if (q == -1)
+      break;
+    switch (q) {
+    case 't':
+      do_timing_test = 1;
+      break;
+    case 'r':
+      do_rejection_test = 1;
+      break;
+    case 'c':
+      do_codec_timing = 1;
+      break;
+    case 'v':
+      do_validation = 1;
+      break;
+    case 'l':
+      do_list_mods = 1;
+      break;
+    case 'd':
+      status = crypto_kernel_set_debug_module(optarg_s, 1);
+      if (status) {
+        printf("error: set debug module (%s) failed\n", optarg_s);
+        exit(1);
+      }  
+      break;
+    default:
+      usage(argv[0]);
+    }    
+  }
+
+  if (!do_validation && !do_timing_test && !do_codec_timing 
+      && !do_list_mods && !do_rejection_test)
+    usage(argv[0]);
+
+  if (do_list_mods) {
+    status = crypto_kernel_list_debug_modules();
+    if (status) {
+      printf("error: list of debug modules failed\n");
+      exit(1);
+    }
+  }
+  
+  if (do_validation) {
+    const srtp_policy_t **policy = policy_array;
+    srtp_policy_t *big_policy;
+
+    /* loop over policy array, testing srtp and srtcp for each policy */
+    while (*policy != NULL) {
+      printf("testing srtp_protect and srtp_unprotect\n");
+      if (srtp_test(*policy) == err_status_ok)
+	printf("passed\n\n");
+      else {
+	printf("failed\n");
+	exit(1);
+      }
+      printf("testing srtp_protect_rtcp and srtp_unprotect_rtcp\n");
+      if (srtcp_test(*policy) == err_status_ok)
+	printf("passed\n\n");
+      else {
+	printf("failed\n");
+	exit(1);
+      }
+      policy++;
+    }
+
+    /* create a big policy list and run tests on it */
+    status = srtp_create_big_policy(&big_policy);
+    if (status) {
+      printf("unexpected failure with error code %d\n", status);
+      exit(1);
+    }
+    printf("testing srtp_protect and srtp_unprotect with big policy\n");
+    if (srtp_test(big_policy) == err_status_ok)
+      printf("passed\n\n");
+    else {
+      printf("failed\n");
+      exit(1);
+    }
+
+    /* run test on wildcard policy */
+    printf("testing srtp_protect and srtp_unprotect on "
+	   "wildcard ssrc policy\n");
+    if (srtp_test(&wildcard_policy) == err_status_ok)
+      printf("passed\n\n");
+    else {
+      printf("failed\n");
+      exit(1);
+    }   
+
+    /*
+     * run validation test against the reference packets - note 
+     * that this test only covers the default policy
+     */
+    printf("testing srtp_protect and srtp_unprotect against "
+	   "reference packets\n");
+    if (srtp_validate() == err_status_ok) 
+      printf("passed\n\n");
+    else {
+      printf("failed\n");
+       exit(1); 
+    }
+
+    /*
+     * test the function srtp_remove_stream()
+     */
+    printf("testing srtp_remove_stream()...");
+    if (srtp_test_remove_stream() == err_status_ok)
+      printf("passed\n");
+    else {
+      printf("failed\n");
+      exit(1);
+    }
+  }
+  
+  if (do_timing_test) {
+    const srtp_policy_t **policy = policy_array;
+    
+    /* loop over policies, run timing test for each */
+    while (*policy != NULL) {
+      srtp_print_policy(*policy);
+      srtp_do_timing(*policy);
+      policy++;
+    }
+  }
+
+  if (do_rejection_test) {
+    const srtp_policy_t **policy = policy_array;
+    
+    /* loop over policies, run rejection timing test for each */
+    while (*policy != NULL) {
+      srtp_print_policy(*policy);
+      srtp_do_rejection_timing(*policy);
+      policy++;
+    }
+  }
+  
+  if (do_codec_timing) {
+    srtp_policy_t policy;
+    int ignore;
+    double mips = mips_estimate(1000000000, &ignore);
+
+    crypto_policy_set_rtp_default(&policy.rtp);
+    crypto_policy_set_rtcp_default(&policy.rtcp);
+    policy.ssrc.type  = ssrc_specific;
+    policy.ssrc.value = 0xdecafbad;
+    policy.key  = test_key;
+    policy.ekt = NULL;
+    policy.window_size = 128;
+    policy.allow_repeat_tx = 0;
+    policy.next = NULL;
+
+    printf("mips estimate: %e\n", mips);
+
+    printf("testing srtp processing time for voice codecs:\n");
+    printf("codec\t\tlength (octets)\t\tsrtp instructions/second\n");
+    printf("G.711\t\t%d\t\t\t%e\n", 80, 
+           (double) mips * (80 * 8) / 
+	   srtp_bits_per_second(80, &policy) / .01 );
+    printf("G.711\t\t%d\t\t\t%e\n", 160, 
+           (double) mips * (160 * 8) / 
+	   srtp_bits_per_second(160, &policy) / .02);
+    printf("G.726-32\t%d\t\t\t%e\n", 40, 
+           (double) mips * (40 * 8) / 
+	   srtp_bits_per_second(40, &policy) / .01 );
+    printf("G.726-32\t%d\t\t\t%e\n", 80, 
+           (double) mips * (80 * 8) / 
+	   srtp_bits_per_second(80, &policy) / .02);
+    printf("G.729\t\t%d\t\t\t%e\n", 10, 
+           (double) mips * (10 * 8) / 
+	   srtp_bits_per_second(10, &policy) / .01 );
+    printf("G.729\t\t%d\t\t\t%e\n", 20, 
+           (double) mips * (20 * 8) /
+	   srtp_bits_per_second(20, &policy) / .02 );
+    printf("Wideband\t%d\t\t\t%e\n", 320, 
+           (double) mips * (320 * 8) /
+	   srtp_bits_per_second(320, &policy) / .01 );
+    printf("Wideband\t%d\t\t\t%e\n", 640, 
+           (double) mips * (640 * 8) /
+	   srtp_bits_per_second(640, &policy) / .02 );
+  }
+
+  return 0;  
+}
+
+
+
+/*
+ * srtp_create_test_packet(len, ssrc) returns a pointer to a
+ * (malloced) example RTP packet whose data field has the length given
+ * by pkt_octet_len and the SSRC value ssrc.  The total length of the
+ * packet is twelve octets longer, since the header is at the
+ * beginning.  There is room at the end of the packet for a trailer,
+ * and the four octets following the packet are filled with 0xff
+ * values to enable testing for overwrites.
+ *
+ * note that the location of the test packet can (and should) be
+ * deallocated with the free() call once it is no longer needed.
+ */
+
+srtp_hdr_t *
+srtp_create_test_packet(int pkt_octet_len, uint32_t ssrc) {
+  int i;
+  uint8_t *buffer;
+  srtp_hdr_t *hdr;
+  int bytes_in_hdr = 12;
+
+  /* allocate memory for test packet */
+  hdr = (srtp_hdr_t*) malloc(pkt_octet_len + bytes_in_hdr
+	       + SRTP_MAX_TRAILER_LEN + 4);
+  if (!hdr)
+    return NULL;
+  
+  hdr->version = 2;              /* RTP version two     */
+  hdr->p    = 0;                 /* no padding needed   */
+  hdr->x    = 0;                 /* no header extension */
+  hdr->cc   = 0;                 /* no CSRCs            */
+  hdr->m    = 0;                 /* marker bit          */
+  hdr->pt   = 0xf;               /* payload type        */
+  hdr->seq  = htons(0x1234);     /* sequence number     */
+  hdr->ts   = htonl(0xdecafbad); /* timestamp           */
+  hdr->ssrc = htonl(ssrc);       /* synch. source       */
+
+  buffer = (uint8_t *)hdr;
+  buffer += bytes_in_hdr;
+
+  /* set RTP data to 0xab */
+  for (i=0; i < pkt_octet_len; i++)
+    *buffer++ = 0xab;
+
+  /* set post-data value to 0xffff to enable overrun checking */
+  for (i=0; i < SRTP_MAX_TRAILER_LEN+4; i++)
+    *buffer++ = 0xff;
+
+  return hdr;
+}
+
+void
+srtp_do_timing(const srtp_policy_t *policy) {
+  int len;
+
+  /*
+   * note: the output of this function is formatted so that it
+   * can be used in gnuplot.  '#' indicates a comment, and "\r\n"
+   * terminates a record
+   */
+  
+  printf("# testing srtp throughput:\r\n");
+  printf("# mesg length (octets)\tthroughput (megabits per second)\r\n");
+  
+  for (len=16; len <= 2048; len *= 2)
+    printf("%d\t\t\t%f\r\n", len, 
+	   srtp_bits_per_second(len, policy) / 1.0E6);
+  
+  /* these extra linefeeds let gnuplot know that a dataset is done */
+  printf("\r\n\r\n");  
+
+}
+
+void
+srtp_do_rejection_timing(const srtp_policy_t *policy) {
+  int len;
+
+  /*
+   * note: the output of this function is formatted so that it
+   * can be used in gnuplot.  '#' indicates a comment, and "\r\n"
+   * terminates a record
+   */
+  
+  printf("# testing srtp rejection throughput:\r\n");
+  printf("# mesg length (octets)\trejections per second\r\n");
+  
+  for (len=8; len <= 2048; len *= 2)
+    printf("%d\t\t\t%e\r\n", len, srtp_rejections_per_second(len, policy));
+  
+  /* these extra linefeeds let gnuplot know that a dataset is done */
+  printf("\r\n\r\n");  
+
+}
+
+
+#define MAX_MSG_LEN 1024
+
+double
+srtp_bits_per_second(int msg_len_octets, const srtp_policy_t *policy) {
+  srtp_t srtp;
+  srtp_hdr_t *mesg;  
+  int i;
+  clock_t timer;
+  int num_trials = 100000;
+  int len;
+  uint32_t ssrc;
+  err_status_t status;
+
+  /*
+   * allocate and initialize an srtp session
+   */
+  status = srtp_create(&srtp, policy);
+  if (status) {
+    printf("error: srtp_create() failed with error code %d\n", status);
+    exit(1);
+  }
+
+  /*
+   * if the ssrc is unspecified, use a predetermined one
+   */
+  if (policy->ssrc.type != ssrc_specific) {
+    ssrc = 0xdeadbeef;
+  } else {
+    ssrc = policy->ssrc.value;
+  }
+
+  /*
+   * create a test packet
+   */
+  mesg = srtp_create_test_packet(msg_len_octets, ssrc);
+  if (mesg == NULL)
+    return 0.0;   /* indicate failure by returning zero */
+  
+  timer = clock();
+  for (i=0; i < num_trials; i++) {
+    err_status_t status;
+    len = msg_len_octets + 12;  /* add in rtp header length */
+    
+    /* srtp protect message */
+    status = srtp_protect(srtp, mesg, &len);
+    if (status) {
+      printf("error: srtp_protect() failed with error code %d\n", status);
+      exit(1);
+    }
+
+    /* increment message number */
+    mesg->seq = htons(ntohs(mesg->seq) + 1);
+
+  }
+  timer = clock() - timer;
+
+  free(mesg);
+  
+  return (double) (msg_len_octets) * 8 *
+                  num_trials * CLOCKS_PER_SEC / timer;   
+}
+
+double
+srtp_rejections_per_second(int msg_len_octets, const srtp_policy_t *policy) {
+  srtp_ctx_t *srtp;
+  srtp_hdr_t *mesg; 
+  int i;
+  int len;
+  clock_t timer;
+  int num_trials = 1000000;
+  uint32_t ssrc = policy->ssrc.value;
+  err_status_t status;
+
+  /*
+   * allocate and initialize an srtp session
+   */
+  status = srtp_create(&srtp, policy);
+  if (status) {
+    printf("error: srtp_create() failed with error code %d\n", status);
+    exit(1);
+  } 
+
+  mesg = srtp_create_test_packet(msg_len_octets, ssrc);
+  if (mesg == NULL)
+    return 0.0;  /* indicate failure by returning zero */
+  
+  len = msg_len_octets;  
+  srtp_protect(srtp, (srtp_hdr_t *)mesg, &len);
+  
+  timer = clock();
+  for (i=0; i < num_trials; i++) {
+    len = msg_len_octets;
+    srtp_unprotect(srtp, (srtp_hdr_t *)mesg, &len);
+  }
+  timer = clock() - timer;
+
+  free(mesg);
+  
+  return (double) num_trials * CLOCKS_PER_SEC / timer;   
+}
+
+
+void
+err_check(err_status_t s) {
+  if (s == err_status_ok) 
+    return;
+  else
+    fprintf(stderr, "error: unexpected srtp failure (code %d)\n", s);
+  exit (1);
+}
+
+err_status_t
+srtp_test(const srtp_policy_t *policy) {
+  int i;
+  srtp_t srtp_sender;
+  srtp_t srtp_rcvr;
+  err_status_t status = err_status_ok;
+  srtp_hdr_t *hdr, *hdr2;
+  uint8_t hdr_enc[64];
+  uint8_t *pkt_end;
+  int msg_len_octets, msg_len_enc;
+  int len;
+  int tag_length = policy->rtp.auth_tag_len; 
+  uint32_t ssrc;
+  srtp_policy_t *rcvr_policy;
+
+  err_check(srtp_create(&srtp_sender, policy));
+
+  /* print out policy */
+  err_check(srtp_session_print_policy(srtp_sender)); 
+
+  /*
+   * initialize data buffer, using the ssrc in the policy unless that
+   * value is a wildcard, in which case we'll just use an arbitrary
+   * one
+   */
+  if (policy->ssrc.type != ssrc_specific)
+    ssrc = 0xdecafbad;
+  else
+    ssrc = policy->ssrc.value;
+  msg_len_octets = 28;
+  hdr = srtp_create_test_packet(msg_len_octets, ssrc);
+
+  if (hdr == NULL)
+    return err_status_alloc_fail;
+  hdr2 = srtp_create_test_packet(msg_len_octets, ssrc);
+  if (hdr2 == NULL) {
+    free(hdr);
+    return err_status_alloc_fail;
+  }
+
+  /* set message length */
+  len = msg_len_octets;
+
+  debug_print(mod_driver, "before protection:\n%s", 	      
+	      srtp_packet_to_string(hdr, len));
+
+#if PRINT_REFERENCE_PACKET
+  debug_print(mod_driver, "reference packet before protection:\n%s", 	      
+	      octet_string_hex_string((uint8_t *)hdr, len));
+#endif
+  err_check(srtp_protect(srtp_sender, hdr, &len));
+
+  debug_print(mod_driver, "after protection:\n%s", 	      
+	      srtp_packet_to_string(hdr, len));
+#if PRINT_REFERENCE_PACKET
+  debug_print(mod_driver, "after protection:\n%s", 	      
+	      octet_string_hex_string((uint8_t *)hdr, len));
+#endif
+
+  /* save protected message and length */
+  memcpy(hdr_enc, hdr, len);
+  msg_len_enc = len;
+
+  /* 
+   * check for overrun of the srtp_protect() function
+   *
+   * The packet is followed by a value of 0xfffff; if the value of the
+   * data following the packet is different, then we know that the
+   * protect function is overwriting the end of the packet.
+   */
+  pkt_end = (uint8_t *)hdr + sizeof(srtp_hdr_t) 
+    + msg_len_octets + tag_length;
+  for (i = 0; i < 4; i++)
+    if (pkt_end[i] != 0xff) {
+      fprintf(stdout, "overwrite in srtp_protect() function "
+              "(expected %x, found %x in trailing octet %d)\n",
+              0xff, ((uint8_t *)hdr)[i], i);
+      free(hdr);
+      free(hdr2);
+      return err_status_algo_fail;
+    }  
+
+  /*
+   * if the policy includes confidentiality, check that ciphertext is
+   * different than plaintext
+   * 
+   * Note that this check will give false negatives, with some small
+   * probability, especially if the packets are short.  For that
+   * reason, we skip this check if the plaintext is less than four
+   * octets long.
+   */
+  if ((policy->rtp.sec_serv & sec_serv_conf) && (msg_len_octets >= 4)) {
+    printf("testing that ciphertext is distinct from plaintext...");
+    status = err_status_algo_fail;
+    for (i=12; i < msg_len_octets+12; i++)
+      if (((uint8_t *)hdr)[i] != ((uint8_t *)hdr2)[i]) {
+	status = err_status_ok;
+      }
+    if (status) {
+      printf("failed\n");
+      free(hdr);
+      free(hdr2);
+      return status;
+    }
+    printf("passed\n");
+  }
+  
+  /*
+   * if the policy uses a 'wildcard' ssrc, then we need to make a copy
+   * of the policy that changes the direction to inbound
+   *
+   * we always copy the policy into the rcvr_policy, since otherwise
+   * the compiler would fret about the constness of the policy
+   */
+  rcvr_policy = (srtp_policy_t*) malloc(sizeof(srtp_policy_t));
+  if (rcvr_policy == NULL)
+    return err_status_alloc_fail;
+  memcpy(rcvr_policy, policy, sizeof(srtp_policy_t));
+  if (policy->ssrc.type == ssrc_any_outbound) {
+    rcvr_policy->ssrc.type = ssrc_any_inbound;       
+  } 
+
+  err_check(srtp_create(&srtp_rcvr, rcvr_policy));
+   
+  err_check(srtp_unprotect(srtp_rcvr, hdr, &len));
+
+  debug_print(mod_driver, "after unprotection:\n%s", 	      
+	      srtp_packet_to_string(hdr, len));
+
+  /* verify that the unprotected packet matches the origial one */
+  for (i=0; i < msg_len_octets; i++)
+    if (((uint8_t *)hdr)[i] != ((uint8_t *)hdr2)[i]) {
+      fprintf(stdout, "mismatch at octet %d\n", i);
+      status = err_status_algo_fail;
+    }
+  if (status) {
+    free(hdr);
+    free(hdr2);
+    return status;
+  }
+
+  /* 
+   * if the policy includes authentication, then test for false positives
+   */  
+  if (policy->rtp.sec_serv & sec_serv_auth) {
+    char *data = ((char *)hdr) + 12;
+    
+    printf("testing for false positives in replay check...");
+
+    /* set message length */
+    len = msg_len_enc;
+
+    /* unprotect a second time - should fail with a replay error */
+    status = srtp_unprotect(srtp_rcvr, hdr_enc, &len);
+    if (status != err_status_replay_fail) {
+      printf("failed with error code %d\n", status);
+      free(hdr); 
+      free(hdr2);
+      return status;
+    } else {
+      printf("passed\n");
+    }
+
+    printf("testing for false positives in auth check...");
+
+    /* increment sequence number in header */
+    hdr->seq++; 
+
+    /* set message length */
+    len = msg_len_octets;
+
+    /* apply protection */
+    err_check(srtp_protect(srtp_sender, hdr, &len));
+    
+    /* flip bits in packet */
+    data[0] ^= 0xff;
+
+    /* unprotect, and check for authentication failure */
+    status = srtp_unprotect(srtp_rcvr, hdr, &len);
+    if (status != err_status_auth_fail) {
+      printf("failed\n");
+      free(hdr); 
+      free(hdr2);
+      return status;
+    } else {
+      printf("passed\n");
+    }
+            
+  }
+
+  err_check(srtp_dealloc(srtp_sender));
+  err_check(srtp_dealloc(srtp_rcvr));
+
+  free(hdr);
+  free(hdr2);
+  return err_status_ok;
+}
+
+
+err_status_t
+srtcp_test(const srtp_policy_t *policy) {
+  int i;
+  srtp_t srtcp_sender;
+  srtp_t srtcp_rcvr;
+  err_status_t status = err_status_ok;
+  srtp_hdr_t *hdr, *hdr2;
+  uint8_t hdr_enc[64];
+  uint8_t *pkt_end;
+  int msg_len_octets, msg_len_enc;
+  int len;
+  int tag_length = policy->rtp.auth_tag_len; 
+  uint32_t ssrc;
+  srtp_policy_t *rcvr_policy;
+
+  err_check(srtp_create(&srtcp_sender, policy));
+
+  /* print out policy */
+  err_check(srtp_session_print_policy(srtcp_sender)); 
+
+  /*
+   * initialize data buffer, using the ssrc in the policy unless that
+   * value is a wildcard, in which case we'll just use an arbitrary
+   * one
+   */
+  if (policy->ssrc.type != ssrc_specific)
+    ssrc = 0xdecafbad;
+  else
+    ssrc = policy->ssrc.value;
+  msg_len_octets = 28;
+  hdr = srtp_create_test_packet(msg_len_octets, ssrc);
+
+  if (hdr == NULL)
+    return err_status_alloc_fail;
+  hdr2 = srtp_create_test_packet(msg_len_octets, ssrc);
+  if (hdr2 == NULL) {
+    free(hdr);
+    return err_status_alloc_fail;
+  }
+
+  /* set message length */
+  len = msg_len_octets;
+
+  debug_print(mod_driver, "before protection:\n%s", 	      
+	      srtp_packet_to_string(hdr, len));
+
+#if PRINT_REFERENCE_PACKET
+  debug_print(mod_driver, "reference packet before protection:\n%s", 	      
+	      octet_string_hex_string((uint8_t *)hdr, len));
+#endif
+  err_check(srtp_protect_rtcp(srtcp_sender, hdr, &len));
+
+  debug_print(mod_driver, "after protection:\n%s", 	      
+	      srtp_packet_to_string(hdr, len));
+#if PRINT_REFERENCE_PACKET
+  debug_print(mod_driver, "after protection:\n%s", 	      
+	      octet_string_hex_string((uint8_t *)hdr, len));
+#endif
+
+  /* save protected message and length */
+  memcpy(hdr_enc, hdr, len);
+  msg_len_enc = len;
+
+  /* 
+   * check for overrun of the srtp_protect() function
+   *
+   * The packet is followed by a value of 0xfffff; if the value of the
+   * data following the packet is different, then we know that the
+   * protect function is overwriting the end of the packet.
+   */
+  pkt_end = (uint8_t *)hdr + sizeof(srtp_hdr_t) 
+    + msg_len_octets + tag_length;
+  for (i = 0; i < 4; i++)
+    if (pkt_end[i] != 0xff) {
+      fprintf(stdout, "overwrite in srtp_protect_rtcp() function "
+              "(expected %x, found %x in trailing octet %d)\n",
+              0xff, ((uint8_t *)hdr)[i], i);
+      free(hdr);
+      free(hdr2);
+      return err_status_algo_fail;
+    }  
+
+  /*
+   * if the policy includes confidentiality, check that ciphertext is
+   * different than plaintext
+   * 
+   * Note that this check will give false negatives, with some small
+   * probability, especially if the packets are short.  For that
+   * reason, we skip this check if the plaintext is less than four
+   * octets long.
+   */
+  if ((policy->rtp.sec_serv & sec_serv_conf) && (msg_len_octets >= 4)) {
+    printf("testing that ciphertext is distinct from plaintext...");
+    status = err_status_algo_fail;
+    for (i=12; i < msg_len_octets+12; i++)
+      if (((uint8_t *)hdr)[i] != ((uint8_t *)hdr2)[i]) {
+	status = err_status_ok;
+      }
+    if (status) {
+      printf("failed\n");
+      free(hdr);
+      free(hdr2);
+      return status;
+    }
+    printf("passed\n");
+  }
+  
+  /*
+   * if the policy uses a 'wildcard' ssrc, then we need to make a copy
+   * of the policy that changes the direction to inbound
+   *
+   * we always copy the policy into the rcvr_policy, since otherwise
+   * the compiler would fret about the constness of the policy
+   */
+  rcvr_policy = (srtp_policy_t*) malloc(sizeof(srtp_policy_t));
+  if (rcvr_policy == NULL)
+    return err_status_alloc_fail;
+  memcpy(rcvr_policy, policy, sizeof(srtp_policy_t));
+  if (policy->ssrc.type == ssrc_any_outbound) {
+    rcvr_policy->ssrc.type = ssrc_any_inbound;       
+  } 
+
+  err_check(srtp_create(&srtcp_rcvr, rcvr_policy));
+   
+  err_check(srtp_unprotect_rtcp(srtcp_rcvr, hdr, &len));
+
+  debug_print(mod_driver, "after unprotection:\n%s", 	      
+	      srtp_packet_to_string(hdr, len));
+
+  /* verify that the unprotected packet matches the origial one */
+  for (i=0; i < msg_len_octets; i++)
+    if (((uint8_t *)hdr)[i] != ((uint8_t *)hdr2)[i]) {
+      fprintf(stdout, "mismatch at octet %d\n", i);
+      status = err_status_algo_fail;
+    }
+  if (status) {
+    free(hdr);
+    free(hdr2);
+    return status;
+  }
+
+  /* 
+   * if the policy includes authentication, then test for false positives
+   */  
+  if (policy->rtp.sec_serv & sec_serv_auth) {
+    char *data = ((char *)hdr) + 12;
+    
+    printf("testing for false positives in replay check...");
+
+    /* set message length */
+    len = msg_len_enc;
+
+    /* unprotect a second time - should fail with a replay error */
+    status = srtp_unprotect_rtcp(srtcp_rcvr, hdr_enc, &len);
+    if (status != err_status_replay_fail) {
+      printf("failed with error code %d\n", status);
+      free(hdr); 
+      free(hdr2);
+      return status;
+    } else {
+      printf("passed\n");
+    }
+
+    printf("testing for false positives in auth check...");
+
+    /* increment sequence number in header */
+    hdr->seq++; 
+
+    /* set message length */
+    len = msg_len_octets;
+
+    /* apply protection */
+    err_check(srtp_protect_rtcp(srtcp_sender, hdr, &len));
+    
+    /* flip bits in packet */
+    data[0] ^= 0xff;
+
+    /* unprotect, and check for authentication failure */
+    status = srtp_unprotect_rtcp(srtcp_rcvr, hdr, &len);
+    if (status != err_status_auth_fail) {
+      printf("failed\n");
+      free(hdr); 
+      free(hdr2);
+      return status;
+    } else {
+      printf("passed\n");
+    }
+            
+  }
+
+  err_check(srtp_dealloc(srtcp_sender));
+  err_check(srtp_dealloc(srtcp_rcvr));
+
+  free(hdr);
+  free(hdr2);
+  return err_status_ok;
+}
+
+
+err_status_t
+srtp_session_print_policy(srtp_t srtp) {
+  char *serv_descr[4] = {
+    "none",
+    "confidentiality",
+    "authentication",
+    "confidentiality and authentication"
+  };
+  char *direction[3] = {
+    "unknown",
+    "outbound",
+    "inbound"
+  };
+  srtp_stream_t stream;
+
+  /* sanity checking */
+  if (srtp == NULL)
+    return err_status_fail;
+
+  /* if there's a template stream, print it out */
+  if (srtp->stream_template != NULL) {
+    stream = srtp->stream_template;
+    printf("# SSRC:          any %s\r\n"
+	   "# rtp cipher:    %s\r\n"
+	   "# rtp auth:      %s\r\n"
+	   "# rtp services:  %s\r\n" 
+           "# rtcp cipher:   %s\r\n"
+	   "# rtcp auth:     %s\r\n"
+	   "# rtcp services: %s\r\n"
+	   "# window size:   %lu\r\n"
+	   "# tx rtx allowed:%s\r\n",
+	   direction[stream->direction],
+	   stream->rtp_cipher->type->description,
+	   stream->rtp_auth->type->description,
+	   serv_descr[stream->rtp_services],
+	   stream->rtcp_cipher->type->description,
+	   stream->rtcp_auth->type->description,
+	   serv_descr[stream->rtcp_services],
+	   rdbx_get_window_size(&stream->rtp_rdbx),
+	   stream->allow_repeat_tx ? "true" : "false");
+  }
+
+  /* loop over streams in session, printing the policy of each */
+  stream = srtp->stream_list;
+  while (stream != NULL) {
+    if (stream->rtp_services > sec_serv_conf_and_auth)
+      return err_status_bad_param;
+    
+    printf("# SSRC:          0x%08x\r\n"
+	   "# rtp cipher:    %s\r\n"
+	   "# rtp auth:      %s\r\n"
+	   "# rtp services:  %s\r\n" 
+           "# rtcp cipher:   %s\r\n"
+	   "# rtcp auth:     %s\r\n"
+	   "# rtcp services: %s\r\n"
+	   "# window size:   %lu\r\n"
+	   "# tx rtx allowed:%s\r\n",
+	   stream->ssrc,
+	   stream->rtp_cipher->type->description,
+	   stream->rtp_auth->type->description,
+	   serv_descr[stream->rtp_services],
+	   stream->rtcp_cipher->type->description,
+	   stream->rtcp_auth->type->description,
+	   serv_descr[stream->rtcp_services],
+	   rdbx_get_window_size(&stream->rtp_rdbx),
+	   stream->allow_repeat_tx ? "true" : "false");
+
+    /* advance to next stream in the list */
+    stream = stream->next;
+  } 
+  return err_status_ok;
+}
+
+err_status_t
+srtp_print_policy(const srtp_policy_t *policy) {
+  err_status_t status;
+  srtp_t session;
+
+  status = srtp_create(&session, policy);
+  if (status)
+    return status;
+  status = srtp_session_print_policy(session);
+  if (status)
+    return status;
+  status = srtp_dealloc(session);
+  if (status)
+    return status;
+  return err_status_ok;
+}
+
+/* 
+ * srtp_print_packet(...) is for debugging only 
+ * it prints an RTP packet to the stdout
+ *
+ * note that this function is *not* threadsafe
+ */
+
+#include <stdio.h>
+
+#define MTU 2048
+
+char packet_string[MTU];
+
+char *
+srtp_packet_to_string(srtp_hdr_t *hdr, int pkt_octet_len) {
+  int octets_in_rtp_header = 12;
+  uint8_t *data = ((uint8_t *)hdr)+octets_in_rtp_header;
+  int hex_len = pkt_octet_len-octets_in_rtp_header;
+
+  /* sanity checking */
+  if ((hdr == NULL) || (pkt_octet_len > MTU))
+    return NULL;
+
+  /* write packet into string */
+  sprintf(packet_string, 
+	  "(s)rtp packet: {\n"
+	  "   version:\t%d\n" 
+	  "   p:\t\t%d\n"     
+	  "   x:\t\t%d\n"     
+	  "   cc:\t\t%d\n"    
+	  "   m:\t\t%d\n"     
+	  "   pt:\t\t%x\n"    
+	  "   seq:\t\t%x\n"   
+	  "   ts:\t\t%x\n"    
+	  "   ssrc:\t%x\n"    
+	  "   data:\t%s\n"    
+	  "} (%d octets in total)\n", 
+	  hdr->version,  
+	  hdr->p,	       
+	  hdr->x,	       
+	  hdr->cc,       
+	  hdr->m,	       
+	  hdr->pt,       
+	  hdr->seq,      
+	  hdr->ts,       
+	  hdr->ssrc,      
+  	  octet_string_hex_string(data, hex_len),
+	  pkt_octet_len);
+
+  return packet_string;
+}
+
+/*
+ * mips_estimate() is a simple function to estimate the number of
+ * instructions per second that the host can perform.  note that this
+ * function can be grossly wrong; you may want to have a manual sanity
+ * check of its output!
+ *
+ * the 'ignore' pointer is there to convince the compiler to not just
+ * optimize away the function
+ */
+
+double
+mips_estimate(int num_trials, int *ignore) {
+  clock_t t;
+  int i, sum;
+
+  sum = 0;
+  t = clock();
+  for (i=0; i<num_trials; i++)
+    sum += i;
+  t = clock() - t;
+
+/*   printf("%d\n", sum); */
+  *ignore = sum;
+
+  return (double) num_trials * CLOCKS_PER_SEC / t;
+}
+
+
+/*
+ * srtp_validate() verifies the correctness of libsrtp by comparing
+ * some computed packets against some pre-computed reference values.
+ * These packets were made with the default SRTP policy.
+ */
+
+
+err_status_t
+srtp_validate() {
+  unsigned char test_key[30] = {
+    0xe1, 0xf9, 0x7a, 0x0d, 0x3e, 0x01, 0x8b, 0xe0,
+    0xd6, 0x4f, 0xa3, 0x2c, 0x06, 0xde, 0x41, 0x39,
+    0x0e, 0xc6, 0x75, 0xad, 0x49, 0x8a, 0xfe, 0xeb,
+    0xb6, 0x96, 0x0b, 0x3a, 0xab, 0xe6
+  };
+  uint8_t srtp_plaintext_ref[28] = {
+    0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 
+    0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab,
+    0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 
+    0xab, 0xab, 0xab, 0xab
+  };
+  uint8_t srtp_plaintext[38] = {
+    0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 
+    0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab,
+    0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 
+    0xab, 0xab, 0xab, 0xab, 0x00, 0x00, 0x00, 0x00, 
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+  };
+  uint8_t srtp_ciphertext[38] = {
+    0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 
+    0xca, 0xfe, 0xba, 0xbe, 0x4e, 0x55, 0xdc, 0x4c,
+    0xe7, 0x99, 0x78, 0xd8, 0x8c, 0xa4, 0xd2, 0x15, 
+    0x94, 0x9d, 0x24, 0x02, 0xb7, 0x8d, 0x6a, 0xcc,
+    0x99, 0xea, 0x17, 0x9b, 0x8d, 0xbb
+  };
+  srtp_t srtp_snd, srtp_recv;
+  err_status_t status;
+  int len;
+  srtp_policy_t policy;
+  
+  /*
+   * create a session with a single stream using the default srtp
+   * policy and with the SSRC value 0xcafebabe
+   */
+  crypto_policy_set_rtp_default(&policy.rtp);
+  crypto_policy_set_rtcp_default(&policy.rtcp);
+  policy.ssrc.type  = ssrc_specific;
+  policy.ssrc.value = 0xcafebabe;
+  policy.key  = test_key;
+  policy.ekt = NULL;
+  policy.window_size = 128;
+  policy.allow_repeat_tx = 0;
+  policy.next = NULL;
+
+  status = srtp_create(&srtp_snd, &policy);
+  if (status)
+    return status;
+ 
+  /* 
+   * protect plaintext, then compare with ciphertext 
+   */
+  len = 28;
+  status = srtp_protect(srtp_snd, srtp_plaintext, &len);
+  if (status || (len != 38))
+    return err_status_fail;
+
+  debug_print(mod_driver, "ciphertext:\n  %s", 	      
+	      octet_string_hex_string(srtp_plaintext, len));
+  debug_print(mod_driver, "ciphertext reference:\n  %s", 	      
+	      octet_string_hex_string(srtp_ciphertext, len));
+
+  if (octet_string_is_eq(srtp_plaintext, srtp_ciphertext, len))
+    return err_status_fail;
+  
+  /*
+   * create a receiver session context comparable to the one created
+   * above - we need to do this so that the replay checking doesn't
+   * complain
+   */
+  status = srtp_create(&srtp_recv, &policy);
+  if (status)
+    return status;
+
+  /*
+   * unprotect ciphertext, then compare with plaintext 
+   */
+  status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len);
+  if (status || (len != 28))
+    return status;
+  
+  if (octet_string_is_eq(srtp_ciphertext, srtp_plaintext_ref, len))
+    return err_status_fail;
+
+  return err_status_ok;
+}
+
+
+err_status_t
+srtp_create_big_policy(srtp_policy_t **list) {
+  extern const srtp_policy_t *policy_array[];
+  srtp_policy_t *p, *tmp;
+  int i = 0;
+  uint32_t ssrc = 0;
+
+  /* sanity checking */
+  if ((list == NULL) || (policy_array[0] == NULL))
+    return err_status_bad_param;
+
+  /* 
+   * loop over policy list, mallocing a new list and copying values
+   * into it (and incrementing the SSRC value as we go along)
+   */
+  tmp = p = NULL;
+  while (policy_array[i] != NULL) {
+    p  = (srtp_policy_t*) malloc(sizeof(srtp_policy_t));
+    if (p == NULL)
+      return err_status_bad_param;
+    memcpy(p, policy_array[i], sizeof(srtp_policy_t));
+    p->ssrc.type = ssrc_specific;
+    p->ssrc.value = ssrc++;
+    p->next = tmp;
+    tmp = p;
+    i++;
+  }
+  *list = p;
+ 
+  return err_status_ok;
+}
+
+err_status_t
+srtp_test_remove_stream() { 
+  err_status_t status;
+  srtp_policy_t *policy_list;
+  srtp_t session;
+  srtp_stream_t stream;
+  /* 
+   * srtp_get_stream() is a libSRTP internal function that we declare
+   * here so that we can use it to verify the correct operation of the
+   * library
+   */ 
+  extern srtp_stream_t srtp_get_stream(srtp_t srtp, uint32_t ssrc);
+  
+
+  status = srtp_create_big_policy(&policy_list);
+  if (status)
+    return status;
+
+  status = srtp_create(&session, policy_list);
+  if (status)
+    return status;
+
+  /*
+   * check for false positives by trying to remove a stream that's not
+   * in the session
+   */
+  status = srtp_remove_stream(session, htonl(0xaaaaaaaa));
+  if (status != err_status_no_ctx)
+    return err_status_fail;
+  
+  /* 
+   * check for false negatives by removing stream 0x1, then
+   * searching for streams 0x0 and 0x2
+   */
+  status = srtp_remove_stream(session, htonl(0x1));
+  if (status != err_status_ok)
+    return err_status_fail;
+  stream = srtp_get_stream(session, htonl(0x0));
+  if (stream == NULL)
+    return err_status_fail;
+  stream = srtp_get_stream(session, htonl(0x2));
+  if (stream == NULL)
+    return err_status_fail;  
+
+  return err_status_ok;  
+}
+
+/*
+ * srtp policy definitions - these definitions are used above
+ */
+
+unsigned char test_key[30] = {
+    0xe1, 0xf9, 0x7a, 0x0d, 0x3e, 0x01, 0x8b, 0xe0,
+    0xd6, 0x4f, 0xa3, 0x2c, 0x06, 0xde, 0x41, 0x39,
+    0x0e, 0xc6, 0x75, 0xad, 0x49, 0x8a, 0xfe, 0xeb,
+    0xb6, 0x96, 0x0b, 0x3a, 0xab, 0xe6
+};
+
+
+const srtp_policy_t default_policy = {
+  { ssrc_any_outbound, 0 },  /* SSRC                           */
+  {                      /* SRTP policy                    */                  
+    AES_128_ICM,            /* cipher type                 */
+    30,                     /* cipher key length in octets */
+    HMAC_SHA1,              /* authentication func type    */
+    16,                     /* auth key length in octets   */
+    10,                     /* auth tag length in octets   */
+    sec_serv_conf_and_auth  /* security services flag      */
+  },
+  {                      /* SRTCP policy                   */
+    AES_128_ICM,            /* cipher type                 */
+    30,                     /* cipher key length in octets */
+    HMAC_SHA1,              /* authentication func type    */
+    16,                     /* auth key length in octets   */
+    10,                     /* auth tag length in octets   */
+    sec_serv_conf_and_auth  /* security services flag      */
+  },
+  test_key,
+  NULL,        /* indicates that EKT is not in use */
+  128,         /* replay window size */
+  0,           /* retransmission not allowed */
+  NULL
+};
+
+const srtp_policy_t aes_tmmh_policy = {
+  { ssrc_any_outbound, 0 },     /* SSRC                        */
+  { 
+    AES_128_ICM,            /* cipher type                 */
+    30,                     /* cipher key length in octets */
+    UST_TMMHv2,             /* authentication func type    */
+    94,                     /* auth key length in octets   */
+    4,                      /* auth tag length in octets   */
+    sec_serv_conf_and_auth  /* security services flag      */
+  },
+  { 
+    AES_128_ICM,            /* cipher type                 */
+    30,                     /* cipher key length in octets */
+    UST_TMMHv2,             /* authentication func type    */
+    94,                     /* auth key length in octets   */
+    4,                      /* auth tag length in octets   */
+    sec_serv_conf_and_auth  /* security services flag      */
+  },
+  test_key,
+  NULL,        /* indicates that EKT is not in use */
+  128,         /* replay window size */
+  0,           /* retransmission not allowed */
+  NULL
+};
+
+const srtp_policy_t tmmh_only_policy = {
+  { ssrc_any_outbound, 0 },     /* SSRC                        */
+  {
+    AES_128_ICM,            /* cipher type                 */
+    30,                     /* cipher key length in octets */
+    UST_TMMHv2,             /* authentication func type    */
+    94,                     /* auth key length in octets   */
+    4,                      /* auth tag length in octets   */
+    sec_serv_auth           /* security services flag      */
+  },
+  {
+    AES_128_ICM,            /* cipher type                 */
+    30,                     /* cipher key length in octets */
+    UST_TMMHv2,             /* authentication func type    */
+    94,                     /* auth key length in octets   */
+    4,                      /* auth tag length in octets   */
+    sec_serv_auth           /* security services flag      */
+  },
+  test_key,
+  NULL,        /* indicates that EKT is not in use */
+  128,         /* replay window size */
+  0,           /* retransmission not allowed */
+  NULL
+};
+
+const srtp_policy_t aes_only_policy = {
+  { ssrc_any_outbound, 0 },     /* SSRC                        */ 
+  {
+    AES_128_ICM,            /* cipher type                 */
+    30,                     /* cipher key length in octets */
+    NULL_AUTH,              /* authentication func type    */
+    0,                      /* auth key length in octets   */
+    0,                      /* auth tag length in octets   */
+    sec_serv_conf           /* security services flag      */
+  },
+  {
+    AES_128_ICM,            /* cipher type                 */
+    30,                     /* cipher key length in octets */
+    NULL_AUTH,              /* authentication func type    */
+    0,                      /* auth key length in octets   */
+    0,                      /* auth tag length in octets   */
+    sec_serv_conf           /* security services flag      */
+  },
+  test_key,
+  NULL,        /* indicates that EKT is not in use */
+  128,         /* replay window size */
+  0,           /* retransmission not allowed */
+  NULL
+};
+
+const srtp_policy_t hmac_only_policy = {
+  { ssrc_any_outbound, 0 },     /* SSRC                        */
+  {
+    NULL_CIPHER,            /* cipher type                 */
+    0,                      /* cipher key length in octets */
+    HMAC_SHA1,              /* authentication func type    */
+    20,                     /* auth key length in octets   */
+    4,                      /* auth tag length in octets   */
+    sec_serv_auth           /* security services flag      */
+  },  
+  {
+    NULL_CIPHER,            /* cipher type                 */
+    0,                      /* cipher key length in octets */
+    HMAC_SHA1,              /* authentication func type    */
+    20,                     /* auth key length in octets   */
+    4,                      /* auth tag length in octets   */
+    sec_serv_auth           /* security services flag      */
+  },
+  test_key,
+  NULL,        /* indicates that EKT is not in use */
+  128,         /* replay window size */
+  0,           /* retransmission not allowed */
+  NULL
+};
+
+const srtp_policy_t null_policy = {
+  { ssrc_any_outbound, 0 },     /* SSRC                        */ 
+  {
+    NULL_CIPHER,            /* cipher type                 */
+    0,                      /* cipher key length in octets */
+    NULL_AUTH,              /* authentication func type    */
+    0,                      /* auth key length in octets   */
+    0,                      /* auth tag length in octets   */
+    sec_serv_none           /* security services flag      */  
+  },
+  {
+    NULL_CIPHER,            /* cipher type                 */
+    0,                      /* cipher key length in octets */
+    NULL_AUTH,              /* authentication func type    */
+    0,                      /* auth key length in octets   */
+    0,                      /* auth tag length in octets   */
+    sec_serv_none           /* security services flag      */  
+  },
+  test_key,
+  NULL,        /* indicates that EKT is not in use */
+  128,         /* replay window size */
+  0,           /* retransmission not allowed */
+  NULL
+};
+
+uint8_t ekt_test_key[16] = {
+  0x77, 0x26, 0x9d, 0xac, 0x16, 0xa3, 0x28, 0xca, 
+  0x8e, 0xc9, 0x68, 0x4b, 0xcc, 0xc4, 0xd2, 0x1b
+};
+
+#include "ekt.h"
+
+ekt_policy_ctx_t ekt_test_policy = {
+  0xa5a5,                   /* SPI */
+  EKT_CIPHER_AES_128_ECB,
+  ekt_test_key,
+  NULL
+};
+
+const srtp_policy_t hmac_only_with_ekt_policy = {
+  { ssrc_any_outbound, 0 },     /* SSRC                        */
+  {
+    NULL_CIPHER,            /* cipher type                 */
+    0,                      /* cipher key length in octets */
+    HMAC_SHA1,              /* authentication func type    */
+    20,                     /* auth key length in octets   */
+    4,                      /* auth tag length in octets   */
+    sec_serv_auth           /* security services flag      */
+  },  
+  {
+    NULL_CIPHER,            /* cipher type                 */
+    0,                      /* cipher key length in octets */
+    HMAC_SHA1,              /* authentication func type    */
+    20,                     /* auth key length in octets   */
+    4,                      /* auth tag length in octets   */
+    sec_serv_auth           /* security services flag      */
+  },
+  test_key,
+  &ekt_test_policy,        /* indicates that EKT is not in use */
+  128,         /* replay window size */
+  0,           /* retransmission not allowed */
+  NULL
+};
+
+
+/*
+ * an array of pointers to the policies listed above
+ *
+ * This array is used to test various aspects of libSRTP for
+ * different cryptographic policies.  The order of the elements
+ * matters - the timing test generates output that can be used
+ * in a plot (see the gnuplot script file 'timing').  If you 
+ * add to this list, you should do it at the end.
+ */
+
+#define USE_TMMH 0
+
+const srtp_policy_t *
+policy_array[] = {
+  &hmac_only_policy,
+#if USE_TMMH
+  &tmmh_only_policy,
+#endif
+  &aes_only_policy,
+#if USE_TMMH
+  &aes_tmmh_policy,
+#endif
+  &default_policy,
+  &null_policy,
+  &hmac_only_with_ekt_policy,
+  NULL
+};
+
+const srtp_policy_t wildcard_policy = {
+  { ssrc_any_outbound, 0 }, /* SSRC                        */
+  {                      /* SRTP policy                    */                  
+    AES_128_ICM,            /* cipher type                 */
+    30,                     /* cipher key length in octets */
+    HMAC_SHA1,              /* authentication func type    */
+    16,                     /* auth key length in octets   */
+    10,                     /* auth tag length in octets   */
+    sec_serv_conf_and_auth  /* security services flag      */
+  },
+  {                      /* SRTCP policy                   */
+    AES_128_ICM,            /* cipher type                 */
+    30,                     /* cipher key length in octets */
+    HMAC_SHA1,              /* authentication func type    */
+    16,                     /* auth key length in octets   */
+    10,                     /* auth tag length in octets   */
+    sec_serv_conf_and_auth  /* security services flag      */
+  },
+  test_key,
+  NULL,
+  128,         /* replay window size */
+  0,           /* retransmission not allowed */
+  NULL
+};
diff --git a/timing b/timing
new file mode 100644
index 0000000..66b00c4
--- /dev/null
+++ b/timing
Binary files differ
diff --git a/undos.sh b/undos.sh
new file mode 100755
index 0000000..db12064
--- /dev/null
+++ b/undos.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+# 
+# usage: undos <file>
+# 
+# strips CRs from a file - useful when moving DOS-created files
+# onto UN*X machines
+
+cat $1 | tr -d "\r" > $1.tmp
+mv $1.tmp $1
+
diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..595b647
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+#
+# update.sh
+#
+# update copyright dates in files
+
+a=`find . -name "*.[ch]"`
+for x in $a; do 
+    sed 's/(c) 2001-2005/(c) 2001-2006/' $x > $x.tmp; 
+    mv $x.tmp $x; 
+done
+
+
+
+