/*
* 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.
*
*/
package org.apache.directory.server.kerberos.shared.crypto.encryption;
import javax.security.auth.kerberos.KerberosKey;
import javax.security.auth.kerberos.KerberosPrincipal;
import org.apache.directory.server.kerberos.shared.messages.value.EncryptedData;
import org.apache.directory.server.kerberos.shared.messages.value.EncryptionKey;
import org.junit.Test;
import static org.junit.Assert.assertTrue;
/**
* Test case for the DES-CBC-CRC encryption type.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
* @version $Rev$, $Date$
*/
public class DesCbcCrcEncryptionTest
{
private static final char[] PASSWORD = "password".toCharArray();
/**
* Test successful encryption and decryption when the plaintext size is less than the block size.
*
* @throws Exception
*/
@Test
public void testPlainTextSizeLessThanBlockSize() throws Exception
{
KerberosKey key = new KerberosKey( new KerberosPrincipal( "hnelson@EXAMPLE.COM" ), PASSWORD, "DES" );
byte[] keyBytes = key.getEncoded();
EncryptionKey encryptionKey = new EncryptionKey( EncryptionType.DES_CBC_CRC, keyBytes );
byte[] plainText =
{ 1, 2, 3, 4, 5, 6, 7 };
DesCbcCrcEncryption encryption = new DesCbcCrcEncryption();
EncryptedData encryptedData = encryption.getEncryptedData( encryptionKey, plainText, null );
byte[] recoveredText = encryption.getDecryptedData( encryptionKey, encryptedData, null );
assertTrue( beginsWith( plainText, recoveredText ) );
}
/**
* Test successful encryption and decryption when the plaintext size equals the block size.
*
* @throws Exception
*/
@Test
public void testPlainTextSizeEqualsBlockSize() throws Exception
{
KerberosKey key = new KerberosKey( new KerberosPrincipal( "hnelson@EXAMPLE.COM" ), PASSWORD, "DES" );
byte[] keyBytes = key.getEncoded();
EncryptionKey encryptionKey = new EncryptionKey( EncryptionType.DES_CBC_CRC, keyBytes );
byte[] plainText =
{ 1, 2, 3, 4, 5, 6, 7, 8 };
DesCbcCrcEncryption encryption = new DesCbcCrcEncryption();
EncryptedData encryptedData = encryption.getEncryptedData( encryptionKey, plainText, null );
byte[] recoveredText = encryption.getDecryptedData( encryptionKey, encryptedData, null );
assertTrue( beginsWith( plainText, recoveredText ) );
}
/**
* Test successful encryption and decryption when the plaintext size is greater than the block size.
*
* @throws Exception
*/
@Test
public void testPlainTextSizeGreaterThanBlockSize() throws Exception
{
KerberosKey key = new KerberosKey( new KerberosPrincipal( "hnelson@EXAMPLE.COM" ), PASSWORD, "DES" );
byte[] keyBytes = key.getEncoded();
EncryptionKey encryptionKey = new EncryptionKey( EncryptionType.DES_CBC_CRC, keyBytes );
byte[] plainText =
{ 1, 2, 3, 4, 5, 6, 7, 8, 9 };
DesCbcCrcEncryption encryption = new DesCbcCrcEncryption();
EncryptedData encryptedData = encryption.getEncryptedData( encryptionKey, plainText, null );
byte[] recoveredText = encryption.getDecryptedData( encryptionKey, encryptedData, null );
assertTrue( beginsWith( plainText, recoveredText ) );
}
private boolean beginsWith( byte[] plainText, byte[] recoveredText )
{
for ( int i = 0; i < plainText.length; i++ )
{
if ( plainText[i] != recoveredText[i] )
{
return false;
}
}
return true;
}
}