| /* |
| * 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 static org.junit.Assert.assertTrue; |
| |
| import javax.security.auth.kerberos.KerberosKey; |
| import javax.security.auth.kerberos.KerberosPrincipal; |
| |
| import com.mycila.junit.concurrent.Concurrency; |
| import com.mycila.junit.concurrent.ConcurrentJunitRunner; |
| import org.apache.directory.shared.kerberos.components.EncryptedData; |
| import org.apache.directory.shared.kerberos.codec.types.EncryptionType; |
| import org.apache.directory.shared.kerberos.components.EncryptionKey; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| |
| /** |
| * Test case for the DES-CBC-MD5 encryption type. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| @RunWith(ConcurrentJunitRunner.class) |
| @Concurrency() |
| public class DesCbcMd5EncryptionTest |
| { |
| 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_MD5, keyBytes ); |
| |
| byte[] plainText = |
| { 1, 2, 3, 4, 5, 6, 7 }; |
| |
| DesCbcMd5Encryption encryption = new DesCbcMd5Encryption(); |
| 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_MD5, keyBytes ); |
| |
| byte[] plainText = |
| { 1, 2, 3, 4, 5, 6, 7, 8 }; |
| |
| DesCbcMd5Encryption encryption = new DesCbcMd5Encryption(); |
| 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_MD5, keyBytes ); |
| |
| byte[] plainText = |
| { 1, 2, 3, 4, 5, 6, 7, 8, 9 }; |
| |
| DesCbcMd5Encryption encryption = new DesCbcMd5Encryption(); |
| 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; |
| } |
| } |