    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
    018package org.apache.commons.codec.digest;
    019
    020import 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 * </p>
    028 * <ul>
    029 * <li>Java 8 and up: SHA-224.</li>
    030 * <li>Java 9 and up: SHA3-224, SHA3-256, SHA3-384, SHA3-512.</li>
    031 * </ul>
    032 *
    033 * @see <a href="https://docs.oracle.com/javase/8/docs/technotes/guides/security/StandardNames.html#MessageDigest">
    034 *      Java 8 Cryptography Architecture Standard Algorithm Name Documentation</a>
    035 * @see <a href="https://docs.oracle.com/en/java/javase/11/docs/specs/security/standard-names.html#messagedigest-algorithms">
    036 *      Java 11 Cryptography Architecture Standard Algorithm Name Documentation</a>
    037 * @see <a href="https://docs.oracle.com/en/java/javase/17/docs/specs/security/standard-names.html#messagedigest-algorithms">
    038 *      Java 17 Cryptography Architecture Standard Algorithm Name Documentation</a>
    039 * @see <a href="https://docs.oracle.com/en/java/javase/21/docs/specs/security/standard-names.html#messagedigest-algorithms">
    040 *      Java 21 Cryptography Architecture Standard Algorithm Name Documentation</a>
    041 *
    042 * @see <a href="https://dx.doi.org/10.6028/NIST.FIPS.180-4">FIPS PUB 180-4</a>
    043 * @see <a href="https://dx.doi.org/10.6028/NIST.FIPS.202">FIPS PUB 202</a>
    044 * @since 1.7
    045 */
    046public class MessageDigestAlgorithms {
    047
    048    /**
    049     * The MD2 message digest algorithm defined in RFC 1319.
    050     */
    051    public static final String MD2 = "MD2";
    052
    053    /**
    054     * The MD5 message digest algorithm defined in RFC 1321.
    055     */
    056    public static final String MD5 = "MD5";
    057
    058    /**
    059     * The SHA-1 hash algorithm defined in the FIPS PUB 180-2.
    060     */
    061    public static final String SHA_1 = "SHA-1";
    062
    063    /**
    064     * The SHA-224 hash algorithm defined in the FIPS PUB 180-3.
    065     * <p>
    066     * Present in Oracle Java 8.
    067     * </p>
    068     *
    069     * @since 1.11
    070     */
    071    public static final String SHA_224 = "SHA-224";
    072
    073    /**
    074     * The SHA-256 hash algorithm defined in the FIPS PUB 180-2.
    075     */
    076    public static final String SHA_256 = "SHA-256";
    077
    078    /**
    079     * The SHA-384 hash algorithm defined in the FIPS PUB 180-2.
    080     */
    081    public static final String SHA_384 = "SHA-384";
    082
    083    /**
    084     * The SHA-512 hash algorithm defined in the FIPS PUB 180-2.
    085     */
    086    public static final String SHA_512 = "SHA-512";
    087
    088    /**
    089     * The SHA-512 hash algorithm defined in the FIPS PUB 180-4.
    090     * <p>
    091     * Included starting in Oracle Java 9.
    092     * </p>
    093     *
    094     * @since 1.14
    095     */
    096    public static final String SHA_512_224 = "SHA-512/224";
    097
    098    /**
    099     * The SHA-512 hash algorithm defined in the FIPS PUB 180-4.
    100     * <p>
    101     * Included starting in Oracle Java 9.
    102     * </p>
    103     *
    104     * @since 1.14
    105     */
    106    public static final String SHA_512_256 = "SHA-512/256";
    107
    108    /**
    109     * The SHA3-224 hash algorithm defined in the FIPS PUB 202.
    110     * <p>
    111     * Included starting in Oracle Java 9.
    112     * </p>
    113     *
    114     * @since 1.11
    115     */
    116    public static final String SHA3_224 = "SHA3-224";
    117
    118    /**
    119     * The SHA3-256 hash algorithm defined in the FIPS PUB 202.
    120     * <p>
    121     * Included starting in Oracle Java 9.
    122     * </p>
    123     *
    124     * @since 1.11
    125     */
    126    public static final String SHA3_256 = "SHA3-256";
    127
    128    /**
    129     * The SHA3-384 hash algorithm defined in the FIPS PUB 202.
    130     * <p>
    131     * Included starting in Oracle Java 9.
    132     * </p>
    133     *
    134     * @since 1.11
    135     */
    136    public static final String SHA3_384 = "SHA3-384";
    137
    138    /**
    139     * The SHA3-512 hash algorithm defined in the FIPS PUB 202.
    140     * <p>
    141     * Included starting in Oracle Java 9.
    142     * </p>
    143     *
    144     * @since 1.11
    145     */
    146    public static final String SHA3_512 = "SHA3-512";
    147
    148    /**
    149     * Gets all constant values defined in this class.
    150     *
    151     * @return all constant values defined in this class.
    152     * @since 1.11
    153     */
    154    public static String[] values() {
    155        // Do not use a constant array here as that can be changed externally by accident or design
    156        return new String[] {
    157            MD2, MD5, SHA_1, SHA_224, SHA_256, SHA_384,
    158            SHA_512, SHA_512_224, SHA_512_256, SHA3_224, SHA3_256, SHA3_384, SHA3_512
    159        };
    160    }
    161
    162    private MessageDigestAlgorithms() {
    163        // cannot be instantiated.
    164    }
    165
    166}