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/*
* Copyright (c) 2015, 2024, 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.io.PrintStream;
import java.lang.String;
import java.lang.System;
import java.security.Provider;
import java.security.SecureRandom;
import java.security.Security;
import javax.crypto.KeyGenerator;
import static java.lang.System.out;
/*
* @test
* @bug 8048607
* @compile ../../../com/sun/crypto/provider/Cipher/DES/TestUtility.java
* @run main TestKGParity
* @summary Test key generation of DES and DESEDE
* @key randomness
*/
public class TestKGParity {
private static final String[] ALGORITHM_ARR = {
"deS", "DesEDE"
};
public static void main(String argv[]) throws Exception {
TestKGParity test = new TestKGParity();
test.run();
}
private void run() throws Exception {
Provider[] providers = Security.getProviders();
for (Provider p : providers) {
String prvName = p.getName();
if ((System.getProperty("test.provider.name") != null &&
prvName.equals(System.getProperty("test.provider.name"))) ||
(System.getProperty("test.provider.name") == null &&
(prvName.startsWith("SunJCE") || prvName.startsWith("SunPKCS11-")))) {
for (String algorithm : ALGORITHM_ARR) {
if (!runTest(p, algorithm)) {
throw new RuntimeException(
"Test failed with provider/algorithm:"
+ p.getName() + "/" + algorithm);
} else {
out.println("Test passed with provider/algorithm:"
+ p.getName() + "/" + algorithm);
}
}
}
}
}
public boolean runTest(Provider p, String algo) throws Exception {
byte[] keyValue = null;
try {
// Initialization
SecureRandom sRdm = new SecureRandom();
KeyGenerator kg = KeyGenerator.getInstance(algo, p);
kg.init(sRdm);
// Generate a SecretKey and retrieve its value
keyValue = kg.generateKey().getEncoded();
// Verify its parity in the unit of byte
for (int i = 0; i < keyValue.length; i++) {
if (!checkParity(keyValue[i])) {
out.println("Testing: "
+ p.getName()
+ "/"
+ algo
+ " failed when verify its parity in the unit of byte:"
+ TestUtility.hexDump(keyValue, i));
return false;
}
}
return true;
} catch (Exception ex) {
out.println("Testing: " + p.getName() + "/" + algo
+ " failed with unexpected exception");
ex.printStackTrace();
throw ex;
}
}
private boolean checkParity(byte keyByte) {
boolean even = false;
byte[] PARITY_BIT_MASK = {
(byte) 0x40, (byte) 0x20, (byte) 0x10, (byte) 0x08,
(byte) 0x04, (byte) 0x02, (byte) 0x01
};
for (int i = 0; i < 7; i++) {
if ((keyByte & PARITY_BIT_MASK[i]) > 0) {
even = !even;
}
}
if (keyByte < 0) {
even = !even;
}
return even;
}
}
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