| /* |
| * Copyright (c) 2002, 2015, 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. |
| * |
| * 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. |
| */ |
| |
| /** |
| * @test |
| * @bug 4716321 |
| * @summary Ensure the random source supplied in |
| * Signature.initSign(PrivateKey, SecureRandom) is used. |
| */ |
| import java.security.*; |
| |
| public class TestInitSignWithMyOwnRandom { |
| |
| public static void main(String[] argv) throws Exception { |
| // any signature implementation will do as long as |
| // it needs a random source |
| Provider p = Security.getProvider("SUN"); |
| KeyPairGenerator kpg = KeyPairGenerator.getInstance("DSA", p); |
| kpg.initialize(512); |
| KeyPair kp = kpg.generateKeyPair(); |
| TestRandomSource rand = new TestRandomSource(); |
| Signature sig = Signature.getInstance("DSA", p); |
| sig.initSign(kp.getPrivate(), rand); |
| sig.update(new byte[20]); |
| sig.sign(); |
| if (rand.isUsed()) { |
| System.out.println("Custom random source is used."); |
| } else { |
| throw new Exception("Custom random source is not used"); |
| } |
| } |
| } |
| |
| class TestRandomSource extends SecureRandom { |
| |
| int count = 0; |
| |
| @Override |
| public void nextBytes(byte[] rs) { |
| count++; |
| } |
| |
| public boolean isUsed() { |
| return (count != 0); |
| } |
| } |