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 org.apache.directory.server.kerberos.shared.crypto.encryption.KeyUsage;
24
25
26 /**
27 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
28 * @version $Rev: 541572 $, $Date: 2007-05-25 09:16:04 +0200 (Fr, 25 Mai 2007) $
29 */
30 public interface ChecksumEngine
31 {
32 /**
33 * Returns the checksum type of this checksum engine.
34 *
35 * @return The checksum type.
36 */
37 public ChecksumType checksumType();
38
39
40 /**
41 * Calculate a checksum given raw bytes and an (optional) key.
42 *
43 * @param data
44 * @param key
45 * @param usage
46 * @return The checksum value.
47 */
48 public byte[] calculateChecksum( byte[] data, byte[] key, KeyUsage usage );
49 }