| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.shiro.crypto.hash; |
| |
| import org.apache.shiro.util.ByteSource; |
| |
| /** |
| * A Cryptographic {@code Hash} represents a one-way conversion algorithm that transforms an input source to an |
| * underlying byte array. Hex and Base64-encoding output of the hashed bytes are automatically supported by the |
| * inherited {@link #toHex() toHex()} and {@link #toBase64() toBase64()} methods. |
| * <p/> |
| * The bytes returned by the parent interface's {@link #getBytes() getBytes()} are the hashed value of the |
| * original input source, also known as the 'checksum' or 'digest'. |
| * |
| * @see Md2Hash |
| * @see Md5Hash |
| * @see Sha1Hash |
| * @see Sha256Hash |
| * @see Sha384Hash |
| * @see Sha512Hash |
| * @since 0.9 |
| */ |
| public interface Hash extends ByteSource { |
| |
| /** |
| * Returns the name of the algorithm used to hash the input source, for example, {@code SHA-256}, {@code MD5}, etc. |
| * <p/> |
| * The name is expected to be a {@link java.security.MessageDigest MessageDigest} algorithm name. |
| * |
| * @return the the name of the algorithm used to hash the input source, for example, {@code SHA-256}, {@code MD5}, etc. |
| * @since 1.1 |
| */ |
| String getAlgorithmName(); |
| |
| /** |
| * Returns a salt used to compute the hash or {@code null} if no salt was used. |
| * |
| * @return a salt used to compute the hash or {@code null} if no salt was used. |
| * @since 1.2 |
| */ |
| ByteSource getSalt(); |
| |
| /** |
| * Returns the number of hash iterations used to compute the hash. |
| * |
| * @return the number of hash iterations used to compute the hash. |
| * @since 1.2 |
| */ |
| int getIterations(); |
| |
| } |