75 lines
2.5 KiB
Java
75 lines
2.5 KiB
Java
/*
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* Copyright (c) 2002, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 4716321
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* @library /test/lib
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* @summary Ensure the random source supplied in
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* Signature.initSign(PrivateKey, SecureRandom) is used.
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* @run main TestInitSignWithMyOwnRandom DSA 512
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* @run main TestInitSignWithMyOwnRandom SHA256withDSA 2048
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*/
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import java.security.*;
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import jdk.test.lib.security.SecurityUtils;
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public class TestInitSignWithMyOwnRandom {
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public static void main(String[] args) throws Exception {
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// any signature implementation will do as long as
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// it needs a random source
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Provider p = Security.getProvider(
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System.getProperty("test.provider.name", "SUN"));
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String kpgAlgorithm = "DSA";
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int keySize = Integer.parseInt(args[1]);
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KeyPairGenerator kpg = KeyPairGenerator.getInstance(kpgAlgorithm, p);
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kpg.initialize(keySize);
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KeyPair kp = kpg.generateKeyPair();
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TestRandomSource rand = new TestRandomSource();
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String signAlgo = args[0];
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Signature sig = Signature.getInstance(signAlgo, p);
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sig.initSign(kp.getPrivate(), rand);
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sig.update(new byte[20]);
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sig.sign();
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if (rand.isUsed()) {
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System.out.println("Custom random source is used.");
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} else {
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throw new Exception("Custom random source is not used");
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}
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}
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}
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class TestRandomSource extends SecureRandom {
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int count = 0;
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@Override
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public void nextBytes(byte[] rs) {
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count++;
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}
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public boolean isUsed() {
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return (count != 0);
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}
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}
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