Showing the changes to java/pkg/sun/security/ec/SunEC.java (1 of 18352 files). Show all
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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 | +} | |