/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Alexander Y. Kleymenov
* @version $Revision$
*/
package org.apache.harmony.crypto.tests.javax.crypto.spec;
import java.lang.NullPointerException;
import java.security.InvalidKeyException;
import java.util.Arrays;
import javax.crypto.spec.DESKeySpec;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
*/
public class DESKeySpecTest extends TestCase {
// DES weak and semi-weak keys
// Got from:
// FIP PUB 74
// FEDERAL INFORMATION PROCESSING STANDARDS PUBLICATION 1981
// GUIDELINES FOR IMPLEMENTING AND USING THE NBS DATA ENCRYPTION STANDARD
// http://www.dice.ucl.ac.be/crypto/standards/fips/fip74/fip74-1.pdf
private static final byte[][] semiweaks = {
{(byte) 0xE0, (byte) 0x01, (byte) 0xE0, (byte) 0x01,
(byte) 0xF1, (byte) 0x01, (byte) 0xF1, (byte) 0x01},
{(byte) 0x01, (byte) 0xE0, (byte) 0x01, (byte) 0xE0,
(byte) 0x01, (byte) 0xF1, (byte) 0x01, (byte) 0xF1},
{(byte) 0xFE, (byte) 0x1F, (byte) 0xFE, (byte) 0x1F,
(byte) 0xFE, (byte) 0x0E, (byte) 0xFE, (byte) 0x0E},
{(byte) 0x1F, (byte) 0xFE, (byte) 0x1F, (byte) 0xFE,
(byte) 0x0E, (byte) 0xFE, (byte) 0x0E, (byte) 0xFE},
{(byte) 0xE0, (byte) 0x1F, (byte) 0xE0, (byte) 0x1F,
(byte) 0xF1, (byte) 0x0E, (byte) 0xF1, (byte) 0x0E},
{(byte) 0x1F, (byte) 0xE0, (byte) 0x1F, (byte) 0xE0,
(byte) 0x0E, (byte) 0xF1, (byte) 0x0E, (byte) 0xF1},
{(byte) 0x01, (byte) 0xFE, (byte) 0x01, (byte) 0xFE,
(byte) 0x01, (byte) 0xFE, (byte) 0x01, (byte) 0xFE},
{(byte) 0xFE, (byte) 0x01, (byte) 0xFE, (byte) 0x01,
(byte) 0xFE, (byte) 0x01, (byte) 0xFE, (byte) 0x01},
{(byte) 0x01, (byte) 0x1F, (byte) 0x01, (byte) 0x1F,
(byte) 0x01, (byte) 0x0E, (byte) 0x01, (byte) 0x0E},
{(byte) 0x1F, (byte) 0x01, (byte) 0x1F, (byte) 0x01,
(byte) 0x0E, (byte) 0x01, (byte) 0x0E, (byte) 0x01},
{(byte) 0xE0, (byte) 0xFE, (byte) 0xE0, (byte) 0xFE,
(byte) 0xF1, (byte) 0xFE, (byte) 0xF1, (byte) 0xFE},
{(byte) 0xFE, (byte) 0xE0, (byte) 0xFE, (byte) 0xE0,
(byte) 0xFE, (byte) 0xF1, (byte) 0xFE, (byte) 0xF1},
{(byte) 0x01, (byte) 0x01, (byte) 0x01, (byte) 0x01,
(byte) 0x01, (byte) 0x01, (byte) 0x01, (byte) 0x01},
{(byte) 0xFE, (byte) 0xFE, (byte) 0xFE, (byte) 0xFE,
(byte) 0xFE, (byte) 0xFE, (byte) 0xFE, (byte) 0xFE},
{(byte) 0xE0, (byte) 0xE0, (byte) 0xE0, (byte) 0xE0,
(byte) 0xF1, (byte) 0xF1, (byte) 0xF1, (byte) 0xF1},
{(byte) 0x1F, (byte) 0x1F, (byte) 0x1F, (byte) 0x1F,
(byte) 0x0E, (byte) 0x0E, (byte) 0x0E, (byte) 0x0E},
};
/* DES not weak or semi-weak keys */
private static final byte[][] notsemiweaks = {
{(byte) 0x1f, (byte) 0x1f, (byte) 0x1f, (byte) 0x1f,
(byte) 0x1f, (byte) 0x1f, (byte) 0x1f, (byte) 0x1f},
{(byte) 0xe0, (byte) 0xe0, (byte) 0xe0, (byte) 0xe0,
(byte) 0xe0, (byte) 0xe0, (byte) 0xe0, (byte) 0xe0}
};
/**
* Constructors testing. Tests behavior of each of two constructors
* in the cases of: null array, short array, normal array.
*/
public void testDESKeySpec() {
try {
new DESKeySpec((byte []) null);
fail("Should raise an NullPointerException "
+ "in case of null byte array.");
} catch (NullPointerException e) {
} catch (InvalidKeyException e) {
fail("Should raise an NullPointerException "
+ "in case of null byte array.");
}
try {
new DESKeySpec(new byte [] {1, 2, 3});
fail("Should raise an InvalidKeyException on a short byte array.");
} catch (NullPointerException e) {
fail("Unexpected NullPointerException was thrown.");
} catch (InvalidKeyException e) {
}
try {
new DESKeySpec(new byte[] {1, 2, 3, 4, 5, 6, 7, 8});
} catch (NullPointerException e) {
fail("Unexpected NullPointerException was thrown.");
} catch (InvalidKeyException e) {
fail("Unexpected InvalidKeyException was thrown.");
}
try {
new DESKeySpec((byte []) null, 1);
fail("Should raise an NullPointerException "
+ "in case of null byte array.");
} catch (NullPointerException e) {
} catch (InvalidKeyException e) {
fail("Should raise an NullPointerException "
+ "in case of null byte array.");
}
try {
new DESKeySpec(new byte [] {1, 2, 3, 4, 5, 6, 7, 8}, 1);
fail("Should raise an InvalidKeyException on a short byte array.");
} catch (NullPointerException e) {
fail("Unexpected NullPointerException was thrown.");
} catch (InvalidKeyException e) {
}
try {
new DESKeySpec(new byte[] {1, 2, 3, 4, 5, 6, 7, 8, 9}, 1);
} catch (NullPointerException e) {
fail("Unexpected NullPointerException was thrown.");
} catch (InvalidKeyException e) {
fail("Unexpected InvalidKeyException was thrown.");
}
}
/**
* getKey() method testing. Checks that modification of returned key
* does not affect the internal key. Also test check an equality of
* the key with the key specified in the constructor. The object under
* the test is created by different constructors.
*/
public void testGetKey() {
byte[] key = {1, 2, 3, 4, 5, 6, 7, 8};
DESKeySpec ks;
try {
ks = new DESKeySpec(key);
} catch (InvalidKeyException e) {
fail("InvalidKeyException should not be thrown.");
return;
}
byte[] res = ks.getKey();
assertTrue("The returned array should be equal to the specified "
+ "in constructor.", Arrays.equals(key, res));
res[0] += 1;
assertFalse("The modification of returned key should not affect"
+ "the underlying key.", key[0] == res[0]);
byte[] key1 = {1, 2, 3, 4, 5, 6, 7, 8, 9, 0};
try {
ks = new DESKeySpec(key1, 2);
} catch (InvalidKeyException e) {
fail("InvalidKeyException should not be thrown.");
return;
}
res = ks.getKey();
assertNotSame("The returned array should not be the same object "
+ "as specified in a constructor.", key1, res);
byte[] exp = new byte[8];
System.arraycopy(key1, 2, exp, 0, 8);
assertTrue("The returned array should be equal to the specified "
+ "in constructor.", Arrays.equals(exp, res));
}
/**
* isParityAdjusted(byte[] key, offset) method testing. Tests if the
* method throws appropriate exceptions on incorrect byte array, if
* it returns false on the key which is not parity adjusted, and if
* it returns true on parity adjusted key.
*/
public void testIsParityAdjusted() {
try {
DESKeySpec.isParityAdjusted(null, 1);
fail("Should raise an InvalidKeyException "
+ "in case of null byte array.");
} catch (NullPointerException e) {
fail("Unexpected NullPointerException was thrown.");
} catch (InvalidKeyException e) {
}
byte[] key = {1, 2, 3, 4, 5, 6, 7, 8};
try {
DESKeySpec.isParityAdjusted(key, 1);
fail("Should raise an InvalidKeyException "
+ "in case of short byte array.");
} catch (NullPointerException e) {
fail("Unexpected NullPointerException was thrown.");
} catch (InvalidKeyException e) {
}
byte[] key_not_pa = {1, 2, 3, 4, 5, 6, 7, 8};
try {
assertFalse("Method returns true when false is expected.",
DESKeySpec.isParityAdjusted(key_not_pa, 0));
} catch (NullPointerException e) {
fail("Unexpected NullPointerException was thrown.");
} catch (InvalidKeyException e) {
fail("Unexpected InvalidKeyException was thrown.");
}
byte[] key_pa = {(byte) 128, (byte) 131, (byte) 133, (byte) 134,
(byte) 137, (byte) 138, (byte) 140, (byte) 143};
try {
assertTrue("Method returns false when true is expected.",
DESKeySpec.isParityAdjusted(key_pa, 0));
} catch (NullPointerException e) {
fail("Unexpected NullPointerException was thrown.");
} catch (InvalidKeyException e) {
fail("Unexpected InvalidKeyException was thrown.");
}
}
/**
* isWeak(byte[] key, int offset) method testing. Tests if the
* method throws appropriate exceptions on incorrect byte array, if
* it returns true on weak or semi-weak keys, and if it returns
* false on other keys.
*/
public void testIsWeak() {
try {
DESKeySpec.isWeak(null, 1);
fail("Should raise an InvalidKeyException "
+ "in case of null byte array.");
} catch (NullPointerException e) {
fail("Unexpected NullPointerException was thrown.");
} catch (InvalidKeyException e) {
}
byte[] key = {1, 2, 3, 4, 5, 6, 7, 8};
try {
DESKeySpec.isWeak(key, 1);
fail("Should raise an InvalidKeyException "
+ "in case of short byte array.");
} catch (NullPointerException e) {
fail("Unexpected NullPointerException was thrown.");
} catch (InvalidKeyException e) {
}
for (int i=0; i<semiweaks.length; i++) {
try {
assertTrue("Method returns false when true is expected",
DESKeySpec.isWeak(semiweaks[i], 0));
} catch (InvalidKeyException e) {
fail("Unexpected InvalidKeyException was thrown.");
}
}
for (int i=0; i<notsemiweaks.length; i++) {
try {
assertFalse("Method returns true when false is expected",
DESKeySpec.isWeak(notsemiweaks[i], 0));
} catch (InvalidKeyException e) {
fail("Unexpected InvalidKeyException was thrown.");
}
}
}
public static Test suite() {
return new TestSuite(DESKeySpecTest.class);
}
}