103 lines
3.4 KiB
Java
103 lines
3.4 KiB
Java
/*
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* Copyright (c) 2003, 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 4844847
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* @summary Test the Signature.update(ByteBuffer) method
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* @author Andreas Sterbenz
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* @key randomness
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* @run main ByteBuffers DSA 512
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* @run main ByteBuffers SHA256withDSA 2048
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*/
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import java.util.*;
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import java.nio.*;
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import java.security.*;
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public class ByteBuffers {
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public static void main(String[] args) throws Exception {
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Provider p = Security.getProvider(
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System.getProperty("test.provider.name", "SUN"));
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Random random = new Random();
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int n = 10 * 1024;
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byte[] t = new byte[n];
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random.nextBytes(t);
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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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String signAlgo = args[0];
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Signature sig = Signature.getInstance(signAlgo, p);
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sig.initSign(kp.getPrivate());
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sig.update(t);
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byte[] signature = sig.sign();
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sig.initVerify(kp.getPublic());
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// test 1: ByteBuffer with an accessible backing array
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ByteBuffer b1 = ByteBuffer.allocate(n + 256);
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b1.position(random.nextInt(256));
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b1.limit(b1.position() + n);
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ByteBuffer b2 = b1.slice();
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b2.put(t);
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b2.clear();
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verify(sig, signature, b2, random);
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// test 2: direct ByteBuffer
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ByteBuffer b3 = ByteBuffer.allocateDirect(t.length);
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b3.put(t);
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b3.clear();
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verify(sig, signature, b3, random);
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// test 3: ByteBuffer without an accessible backing array
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b2.clear();
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ByteBuffer b4 = b2.asReadOnlyBuffer();
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verify(sig, signature, b4, random);
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System.out.println("All tests passed");
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}
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private static void verify(Signature sig, byte[] signature, ByteBuffer b, Random random) throws Exception {
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int lim = b.limit();
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b.limit(random.nextInt(lim));
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sig.update(b);
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if (b.hasRemaining()) {
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throw new Exception("Buffer not consumed");
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}
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b.limit(lim);
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sig.update(b);
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if (b.hasRemaining()) {
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throw new Exception("Buffer not consumed");
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}
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if (sig.verify(signature) == false) {
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throw new Exception("Signature did not verify");
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}
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}
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}
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