/* * Copyright (c) 1996, 2011, 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.provider; import java.util.*;import java.security.*; import sun.security.action.PutAllAction; import sun.security.rsa.SunRsaSignEntries; /** * Provider used for verification of signed JAR files *if* the Sun and * SunRsaSign main classes have been removed. Otherwise, this provider is not * necessary and registers no algorithms. This functionality only exists to * support a use case required by a specific customer and is not generally * supported. * * @since  1.7 * @author Andreas Sterbenz */public final class VerificationProvider extends Provider {     private static final long serialVersionUID = 7482667077568930381L;     private static final boolean ACTIVE;     static {        boolean b;        try {            Class.forName("sun.security.provider.Sun");            Class.forName("sun.security.rsa.SunRsaSign");            b = false;        } catch (ClassNotFoundException e) {            b = true;        }        ACTIVE = b;    }     public VerificationProvider() {        super("SunJarVerification", 1.7, "Jar Verification Provider");        // register all algorithms normally registered by the Sun and SunRsaSign        // providers, but only if they are missing        if (ACTIVE == false) {            return;        }         // 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) {            SunEntries.putEntries(this);            SunRsaSignEntries.putEntries(this);        } else {            // use LinkedHashMap to preserve the order of the PRNGs            Map<Object, Object> map = new LinkedHashMap<>();            SunEntries.putEntries(map);            SunRsaSignEntries.putEntries(map);            AccessController.doPrivileged(new PutAllAction(this, map));        }    } }