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/*
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* Copyright (c) 1998, 2014, 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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import java.security.InvalidKeyException;
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import java.security.NoSuchAlgorithmException;
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import java.security.NoSuchProviderException;
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import java.security.Provider;
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import java.security.SecureRandom;
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import java.util.List;
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import javax.crypto.Mac;
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import javax.crypto.spec.SecretKeySpec;
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/**
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* @test
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* @bug 8048603
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* @summary Check if doFinal and update operation result in same Mac
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* @author Yu-Ching Valerie Peng, Bill Situ, Alexander Fomin
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* @library ..
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* @run main MacSameTest
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*/
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public class MacSameTest extends PKCS11Test {
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private static final int MESSAGE_SIZE = 25;
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private static final int OFFSET = 5;
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private static final int KEY_SIZE = 70;
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/**
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* Initialize a message, instantiate a Mac object,
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* initialize the object with a SecretKey,
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* feed the message into the Mac object
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* all at once and get the output MAC as result1.
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* Reset the Mac object, chop the message into three pieces,
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* feed into the Mac object sequentially, and get the output MAC as result2.
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* Finally, compare result1 and result2 and see if they are the same.
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*
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* @param args the command line arguments
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*/
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public static void main(String[] args) throws Exception {
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main(new MacSameTest());
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}
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@Override
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public void main(Provider p) {
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List<String> algorithms = getSupportedAlgorithms("Mac", "Hmac", p);
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boolean success = true;
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for (String alg : algorithms) {
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try {
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doTest(alg, p);
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} catch (Exception e) {
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System.out.println("Unexpected exception: " + e);
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e.printStackTrace();
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success = false;
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}
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}
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if (!success) {
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throw new RuntimeException("Test failed");
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}
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}
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private void doTest(String algo, Provider provider)
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throws NoSuchAlgorithmException, NoSuchProviderException,
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InvalidKeyException {
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System.out.println("Test " + algo);
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Mac mac;
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try {
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mac = Mac.getInstance(algo, provider);
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} catch (NoSuchAlgorithmException nsae) {
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if ("SunPKCS11-Solaris".equals(provider.getName())) {
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// depending on Solaris configuration,
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// it can support HMAC or not with Mac
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System.out.println("Expected NoSuchAlgorithmException thrown: "
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+ nsae);
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return;
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}
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throw nsae;
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}
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byte[] plain = new byte[MESSAGE_SIZE];
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for (int i = 0; i < MESSAGE_SIZE; i++) {
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plain[i] = (byte) (i % 256);
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}
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byte[] tail = new byte[plain.length - OFFSET];
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System.arraycopy(plain, OFFSET, tail, 0, tail.length);
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SecureRandom srdm = new SecureRandom();
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byte[] keyVal = new byte[KEY_SIZE];
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srdm.nextBytes(keyVal);
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SecretKeySpec keySpec = new SecretKeySpec(keyVal, "HMAC");
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mac.init(keySpec);
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byte[] result1 = mac.doFinal(plain);
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mac.reset();
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mac.update(plain[0]);
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mac.update(plain, 1, OFFSET - 1);
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byte[] result2 = mac.doFinal(tail);
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if (!java.util.Arrays.equals(result1, result2)) {
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throw new RuntimeException("result1 and result2 are not the same");
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}
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}
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}
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