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| 1 | /* | ||
| 2 | * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.security.ec; | ||
| 27 | |||
| 28 | import java.util.*; | ||
| 29 | import java.security.*; | ||
| 30 | import sun.security.action.PutAllAction; | ||
| 31 | |||
| 32 | /** | ||
| 33 | * Provider class for the Elliptic Curve provider. | ||
| 34 | * Supports EC keypair and parameter generation, ECDSA signing and | ||
| 35 | * ECDH key agreement. | ||
| 36 | * | ||
| 37 | * IMPLEMENTATION NOTE: | ||
| 38 | * The Java classes in this provider access a native ECC implementation | ||
| 39 | * via JNI to a C++ wrapper class which in turn calls C functions. | ||
| 40 | * The Java classes are packaged into the signed sunec.jar in the JRE | ||
| 41 | * extensions directory and the C++ and C functions are packaged into | ||
| 42 | * libsunec.so or sunec.dll in the JRE native libraries directory. | ||
| 43 | * If the native library is not present then this provider is registered | ||
| 44 | * with support for fewer ECC algorithms (KeyPairGenerator, Signature and | ||
| 45 | * KeyAgreement are omitted). | ||
| 46 | * | ||
| 47 | * @since 1.7 | ||
| 48 | */ | ||
| 49 | public final class SunEC extends Provider { | ||
| 50 | |||
| 51 | private static final long serialVersionUID = -2279741672933606418L; | ||
| 52 | |||
| 53 | // flag indicating whether the full EC implementation is present | ||
| 54 | // (when native library is absent then fewer EC algorithms are available) | ||
| 55 | private static boolean useFullImplementation = true; | ||
| 56 | static { | ||
| 57 | try { | ||
| 58 | AccessController.doPrivileged(new PrivilegedAction<Void>() { | ||
| 59 | public Void run() { | ||
| 60 | System.loadLibrary("sunec"); // check for native library | ||
| 61 | return null; | ||
| 62 | } | ||
| 63 | }); | ||
| 64 | } catch (UnsatisfiedLinkError e) { | ||
| 65 | useFullImplementation = false; | ||
| 66 | } | ||
| 67 | } | ||
| 68 | |||
| 69 | public SunEC() { | ||
| 70 | super("SunEC", 1.7d, "Sun Elliptic Curve provider (EC, ECDSA, ECDH)"); | ||
| 71 | |||
| 72 | // if there is no security manager installed, put directly into | ||
| 73 | // the provider. Otherwise, create a temporary map and use a | ||
| 74 | // doPrivileged() call at the end to transfer the contents | ||
| 75 | if (System.getSecurityManager() == null) { | ||
| 76 | SunECEntries.putEntries(this, useFullImplementation); | ||
| 77 | } else { | ||
| 78 | Map<Object, Object> map = new HashMap<Object, Object>(); | ||
| 79 | SunECEntries.putEntries(map, useFullImplementation); | ||
| 80 | AccessController.doPrivileged(new PutAllAction(this, map)); | ||
| 81 | } | ||
| 82 | } | ||
| 83 | |||
| 84 | } | ||