    001    /*
    002     * Licensed to the Apache Software Foundation (ASF) under one or more
    003     * contributor license agreements.  See the NOTICE file distributed with
    004     * this work for additional information regarding copyright ownership.
    005     * The ASF licenses this file to You under the Apache License, Version 2.0
    006     * (the "License"); you may not use this file except in compliance with
    007     * the License.  You may obtain a copy of the License at
    008     *
    009     *      http://www.apache.org/licenses/LICENSE-2.0
    010     *
    011     * Unless required by applicable law or agreed to in writing, software
    012     * distributed under the License is distributed on an "AS IS" BASIS,
    013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014     * See the License for the specific language governing permissions and
    015     * limitations under the License.
    016     */
    017
    018    package org.apache.commons.codec.digest;
    019
    020    import java.security.MessageDigest;
    021
    022    /**
    023     * Standard {@link MessageDigest} algorithm names from the <cite>Java Cryptography Architecture Standard Algorithm Name
    024     * Documentation</cite>.
    025     * <p>
    026     * This class is immutable and thread-safe.
    027     *
    028     * @see <a href="http://docs.oracle.com/javase/6/docs/technotes/guides/security/StandardNames.html">Java Cryptography
    029     *      Architecture Standard Algorithm Name Documentation</a>
    030     * @since 1.7
    031     * @version $Id: MessageDigestAlgorithms.java 1465850 2013-04-09 00:46:31Z sebb $
    032     */
    033    public class MessageDigestAlgorithms {
    034
    035        private MessageDigestAlgorithms() {
    036            // cannot be instantiated.
    037        }
    038
    039        /**
    040         * The MD2 message digest algorithm defined in RFC 1319.
    041         */
    042        public static final String MD2 = "MD2";
    043
    044        /**
    045         * The MD5 message digest algorithm defined in RFC 1321.
    046         */
    047        public static final String MD5 = "MD5";
    048
    049        /**
    050         * The SHA-1 hash algorithm defined in the FIPS PUB 180-2.
    051         */
    052        public static final String SHA_1 = "SHA-1";
    053
    054        /**
    055         * The SHA-256 hash algorithm defined in the FIPS PUB 180-2.
    056         */
    057        public static final String SHA_256 = "SHA-256";
    058
    059        /**
    060         * The SHA-384 hash algorithm defined in the FIPS PUB 180-2.
    061         */
    062        public static final String SHA_384 = "SHA-384";
    063
    064        /**
    065         * The SHA-512 hash algorithm defined in the FIPS PUB 180-2.
    066         */
    067        public static final String SHA_512 = "SHA-512";
    068
    069    }