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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.commons.codec.digest;
19  
20  import java.security.MessageDigest;
21  
22  /**
23   * Standard {@link MessageDigest} algorithm names from the <cite>Java Cryptography Architecture Standard Algorithm Name
24   * Documentation</cite>.
25   * <p>
26   * This class is immutable and thread-safe.
27   *
28   * @see <a href="http://docs.oracle.com/javase/6/docs/technotes/guides/security/StandardNames.html">Java Cryptography
29   *      Architecture Standard Algorithm Name Documentation</a>
30   * @since 1.7
31   * @version $Id: MessageDigestAlgorithms.java 1465850 2013-04-09 00:46:31Z sebb $
32   */
33  public class MessageDigestAlgorithms {
34  
35      private MessageDigestAlgorithms() {
36          // cannot be instantiated.
37      }
38  
39      /**
40       * The MD2 message digest algorithm defined in RFC 1319.
41       */
42      public static final String MD2 = "MD2";
43  
44      /**
45       * The MD5 message digest algorithm defined in RFC 1321.
46       */
47      public static final String MD5 = "MD5";
48  
49      /**
50       * The SHA-1 hash algorithm defined in the FIPS PUB 180-2.
51       */
52      public static final String SHA_1 = "SHA-1";
53  
54      /**
55       * The SHA-256 hash algorithm defined in the FIPS PUB 180-2.
56       */
57      public static final String SHA_256 = "SHA-256";
58  
59      /**
60       * The SHA-384 hash algorithm defined in the FIPS PUB 180-2.
61       */
62      public static final String SHA_384 = "SHA-384";
63  
64      /**
65       * The SHA-512 hash algorithm defined in the FIPS PUB 180-2.
66       */
67      public static final String SHA_512 = "SHA-512";
68  
69  }