| /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) |
| * All rights reserved. |
| * |
| * This package is an SSL implementation written |
| * by Eric Young (eay@cryptsoft.com). |
| * The implementation was written so as to conform with Netscapes SSL. |
| * |
| * This library is free for commercial and non-commercial use as long as |
| * the following conditions are aheared to. The following conditions |
| * apply to all code found in this distribution, be it the RC4, RSA, |
| * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| * included with this distribution is covered by the same copyright terms |
| * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| * |
| * Copyright remains Eric Young's, and as such any Copyright notices in |
| * the code are not to be removed. |
| * If this package is used in a product, Eric Young should be given attribution |
| * as the author of the parts of the library used. |
| * This can be in the form of a textual message at program startup or |
| * in documentation (online or textual) provided with the package. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * "This product includes cryptographic software written by |
| * Eric Young (eay@cryptsoft.com)" |
| * The word 'cryptographic' can be left out if the rouines from the library |
| * being used are not cryptographic related :-). |
| * 4. If you include any Windows specific code (or a derivative thereof) from |
| * the apps directory (application code) you must include an acknowledgement: |
| * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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. |
| * |
| * The licence and distribution terms for any publically available version or |
| * derivative of this code cannot be changed. i.e. this code cannot simply be |
| * copied and put under another distribution licence |
| * [including the GNU Public Licence.] |
| */ |
| /* ==================================================================== |
| * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. 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. |
| * |
| * 3. All advertising materials mentioning features or use of this |
| * software must display the following acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
| * |
| * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For written permission, please contact |
| * openssl-core@openssl.org. |
| * |
| * 5. Products derived from this software may not be called "OpenSSL" |
| * nor may "OpenSSL" appear in their names without prior written |
| * permission of the OpenSSL Project. |
| * |
| * 6. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| * EXPRESSED 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 OpenSSL PROJECT OR |
| * ITS 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. |
| * ==================================================================== |
| * |
| * This product includes cryptographic software written by Eric Young |
| * (eay@cryptsoft.com). This product includes software written by Tim |
| * Hudson (tjh@cryptsoft.com). |
| * |
| */ |
| /* ==================================================================== |
| * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. |
| * |
| * Portions of the attached software ("Contribution") are developed by |
| * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. |
| * |
| * The Contribution is licensed pursuant to the Eric Young open source |
| * license provided above. |
| * |
| * The binary polynomial arithmetic software is originally written by |
| * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems |
| * Laboratories. */ |
| |
| #ifndef OPENSSL_HEADER_BN_INTERNAL_H |
| #define OPENSSL_HEADER_BN_INTERNAL_H |
| |
| #include <GFp/base.h> |
| |
| #if defined(OPENSSL_X86_64) && defined(_MSC_VER) && !defined(__clang__) |
| #pragma warning(push, 3) |
| #include <intrin.h> |
| #pragma warning(pop) |
| #pragma intrinsic(_umul128) |
| #endif |
| |
| #include "../../internal.h" |
| |
| typedef crypto_word BN_ULONG; |
| |
| #if defined(OPENSSL_64_BIT) |
| |
| #if defined(BORINGSSL_HAS_UINT128) |
| // MSVC doesn't support two-word integers on 64-bit. |
| #define BN_ULLONG uint128_t |
| #endif |
| |
| #define BN_BITS2 64 |
| #define BN_MONT_CTX_N0_LIMBS 1 |
| #define BN_MONT_CTX_N0(hi, lo) TOBN(hi, lo), 0 |
| #define TOBN(hi, lo) ((BN_ULONG)(hi) << 32 | (lo)) |
| |
| #elif defined(OPENSSL_32_BIT) |
| |
| #define BN_ULLONG uint64_t |
| #define BN_BITS2 32 |
| // On some 32-bit platforms, Montgomery multiplication is done using 64-bit |
| // arithmetic with SIMD instructions. On such platforms, |BN_MONT_CTX::n0| |
| // needs to be two words long. Only certain 32-bit platforms actually make use |
| // of n0[1] and shorter R value would suffice for the others. However, |
| // currently only the assembly files know which is which. |
| #define BN_MONT_CTX_N0_LIMBS 2 |
| #define BN_MONT_CTX_N0(hi, lo) TOBN(hi, lo) |
| #define TOBN(hi, lo) (lo), (hi) |
| |
| #else |
| #error "Must define either OPENSSL_32_BIT or OPENSSL_64_BIT" |
| #endif |
| |
| |
| // |num| must be at least 4, at least on x86. |
| // |
| // In other forks, |bn_mul_mont| returns an |int| indicating whether it |
| // actually did the multiplication. All our implementations always do the |
| // multiplication, and forcing callers to deal with the possibility of it |
| // failing just leads to further problems. |
| // |
| // In other forks, |bn_mod_mul|'s `num` argument has type |int| but it is |
| // implicitly treated as a |size_t|; when |int| is smaller than |size_t| |
| // then the |movq 48(%rsp),%r9| done by x86_64-xlate.pl implicitly does the |
| // conversion. |
| OPENSSL_STATIC_ASSERT(sizeof(int) == sizeof(size_t) || |
| (sizeof(int) == 4 && sizeof(size_t) == 8), |
| "int and size_t ABI mismatch"); |
| void GFp_bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, |
| const BN_ULONG *np, const BN_ULONG *n0, size_t num); |
| |
| static inline void bn_umult_lohi(BN_ULONG *low_out, BN_ULONG *high_out, |
| BN_ULONG a, BN_ULONG b) { |
| #if defined(OPENSSL_X86_64) && defined(_MSC_VER) && !defined(__clang__) |
| *low_out = _umul128(a, b, high_out); |
| #else |
| BN_ULLONG result = (BN_ULLONG)a * b; |
| *low_out = (BN_ULONG)result; |
| *high_out = (BN_ULONG)(result >> BN_BITS2); |
| #endif |
| } |
| |
| #endif // OPENSSL_HEADER_BN_INTERNAL_H |
