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/*
* Copyright (c) 1998, 2014, 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.
*/
import java.nio.ByteBuffer;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import javax.crypto.Mac;
import javax.crypto.SecretKey;
/**
* @test
* @bug 8048603
* @summary Checks if PBE algorithms work fine with large buffer
* @author Alexander Fomin
* @build Utils
* @run main LargeByteBufferTest
*/
public class LargeByteBufferTest implements MacTest {
private static final int BUFFER_SIZE = 65535;
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
Utils.runTests(new LargeByteBufferTest());
}
@Override
public void doTest(String alg) throws NoSuchAlgorithmException,
InvalidKeyException, NoSuchProviderException {
SecretKey key = Utils.getSecretKeySpec();
// instantiate Mac object and init it with a SecretKey
Mac mac = Mac.getInstance(alg, "SunJCE");
mac.init(key);
// prepare buffer
byte[] data = new byte[BUFFER_SIZE];
for (int i = 0; i < BUFFER_SIZE; i++) {
data[i] = (byte) (i % 256);
}
ByteBuffer buf = ByteBuffer.wrap(data);
int limitBefore = buf.limit();
mac.update(buf);
mac.doFinal();
int limitAfter = buf.limit();
int positonAfter = buf.position();
if (limitAfter != limitBefore) {
System.out.println("limit after = " + limitAfter);
System.out.println("limit before = " + limitBefore);
throw new RuntimeException("Test failed: "
+ "limit of buffer has been chenged.");
}
if (positonAfter != limitAfter) {
System.out.println("position after = " + positonAfter);
System.out.println("limit after = " + limitAfter);
throw new RuntimeException("Test failed: "
+ "position of buffer isn't equal to its limit");
}
}
}
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