| /* |
| * 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.ki.crypto.hash; |
| |
| import org.apache.ki.codec.Base64; |
| import org.apache.ki.codec.Hex; |
| |
| /** |
| * Generates an SHA-256 Hash from a given input <tt>source</tt> with an optional <tt>salt</tt> and hash iterations. |
| * |
| * <p>See the {@link AbstractHash AbstractHash} parent class JavaDoc for a detailed explanation of Hashing |
| * techniques and how the overloaded constructors function. |
| * |
| * <p><b>JDK Version Note</b> - Attempting to instantiate this class on JREs prior to version 1.4.0 will throw |
| * an {@link IllegalStateException IllegalStateException} |
| * |
| * @author Les Hazlewood |
| * @since 0.9 |
| */ |
| public class Sha256Hash extends AbstractHash { |
| |
| //TODO - complete JavaDoc |
| |
| public static final String ALGORITHM_NAME = "SHA-256"; |
| |
| public Sha256Hash() { |
| } |
| |
| public Sha256Hash(Object source) { |
| super(source); |
| } |
| |
| public Sha256Hash(Object source, Object salt) { |
| super(source, salt); |
| } |
| |
| public Sha256Hash(Object source, Object salt, int hashIterations) { |
| super(source, salt, hashIterations); |
| } |
| |
| protected String getAlgorithmName() { |
| return ALGORITHM_NAME; |
| } |
| |
| public static Sha256Hash fromHexString(String hex) { |
| Sha256Hash hash = new Sha256Hash(); |
| hash.setBytes(Hex.decode(hex)); |
| return hash; |
| } |
| |
| public static Sha256Hash fromBase64String(String base64) { |
| Sha256Hash hash = new Sha256Hash(); |
| hash.setBytes(Base64.decode(base64)); |
| return hash; |
| } |
| |
| |
| } |