Mercurial > hg > icedtea7-forest > jdk
view src/share/classes/sun/security/ec/SunEC.java @ 9256:44e58259e68b
PR3480, RH1486025: ECC and NSS JVM crash
Summary: SunEC provider can have multiple instances, leading to premature NSS shutdown
Contributed-by: Martin Balao <mbalao@redhat.com>
author | andrew |
---|---|
date | Wed, 25 Oct 2017 18:08:25 +0100 |
parents | 610eb1b5fd0b |
children |
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/* * Copyright (c) 2009, 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 initialize(); return null; } }); } catch (UnsatisfiedLinkError e) { useFullImplementation = false; } } public SunEC() { super("SunEC", 1.7d, "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)); } } /** * Initialize the native code. */ private static native void initialize(); }