1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.directory.server.kerberos.shared.crypto.checksum;
21
22
23 import java.security.MessageDigest;
24 import java.security.NoSuchAlgorithmException;
25
26 import org.apache.directory.server.kerberos.shared.crypto.encryption.KeyUsage;
27 import org.apache.directory.shared.ldap.constants.LdapSecurityConstants;
28
29
30 /**
31 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
32 * @version $Rev: 602574 $, $Date: 2007-12-09 00:10:21 +0100 (So, 09 Dez 2007) $
33 */
34 class RsaMd5Checksum implements ChecksumEngine
35 {
36 public ChecksumType checksumType()
37 {
38 return ChecksumType.RSA_MD5;
39 }
40
41
42 public byte[] calculateChecksum( byte[] data, byte[] key, KeyUsage usage )
43 {
44 try
45 {
46 MessageDigest digester = MessageDigest.getInstance( LdapSecurityConstants.HASH_METHOD_MD5.getName() );
47 return digester.digest( data );
48 }
49 catch ( NoSuchAlgorithmException nsae )
50 {
51 return null;
52 }
53 }
54 }