| /* |
| * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.ec; |
| |
| import java.util.*; |
| import java.security.*; |
| import sun.security.action.PutAllAction; |
| |
| /** |
| * Provider class for the Elliptic Curve provider. |
| * Supports EC keypair and parameter generation, ECDSA signing and |
| * ECDH key agreement. |
| * |
| * IMPLEMENTATION NOTE: |
| * The Java classes in this provider access a native ECC implementation |
| * via JNI to a C++ wrapper class which in turn calls C functions. |
| * The Java classes are packaged into the signed sunec.jar in the JRE |
| * extensions directory and the C++ and C functions are packaged into |
| * libsunec.so or sunec.dll in the JRE native libraries directory. |
| * If the native library is not present then this provider is registered |
| * with support for fewer ECC algorithms (KeyPairGenerator, Signature and |
| * KeyAgreement are omitted). |
| * |
| * @since 1.7 |
| */ |
| public final class SunEC extends Provider { |
| |
| private static final long serialVersionUID = -2279741672933606418L; |
| |
| // flag indicating whether the full EC implementation is present |
| // (when native library is absent then fewer EC algorithms are available) |
| private static boolean useFullImplementation = true; |
| static { |
| try { |
| AccessController.doPrivileged(new PrivilegedAction<Void>() { |
| public Void run() { |
| System.loadLibrary("sunec"); // check for native library |
| return null; |
| } |
| }); |
| } catch (UnsatisfiedLinkError e) { |
| useFullImplementation = false; |
| } |
| } |
| |
| public SunEC() { |
| super("SunEC", 1.8d, "Sun Elliptic Curve provider (EC, ECDSA, ECDH)"); |
| |
| // if there is no security manager installed, put directly into |
| // the provider. Otherwise, create a temporary map and use a |
| // doPrivileged() call at the end to transfer the contents |
| if (System.getSecurityManager() == null) { |
| SunECEntries.putEntries(this, useFullImplementation); |
| } else { |
| Map<Object, Object> map = new HashMap<Object, Object>(); |
| SunECEntries.putEntries(map, useFullImplementation); |
| AccessController.doPrivileged(new PutAllAction(this, map)); |
| } |
| } |
| |
| } |