001/** 002 * 003 * Copyright © 2014 Florian Schmaus 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * 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 */ 017package org.jivesoftware.smack.util; 018 019import java.security.MessageDigest; 020import java.security.NoSuchAlgorithmException; 021 022public class SHA1 { 023 024 /** 025 * Used by the hash method. 026 */ 027 private static MessageDigest SHA1_DIGEST; 028 029 static { 030 try { 031 SHA1_DIGEST = MessageDigest.getInstance(StringUtils.SHA1); 032 } 033 catch (NoSuchAlgorithmException e) { 034 // Smack wont be able to function normally if this exception is thrown, wrap it into 035 // an ISE and make the user aware of the problem. 036 throw new IllegalStateException(e); 037 } 038 } 039 040 public static synchronized byte[] bytes(byte[] bytes) { 041 SHA1_DIGEST.update(bytes); 042 return SHA1_DIGEST.digest(); 043 } 044 045 public static byte[] bytes(String string) { 046 return bytes(StringUtils.toBytes(string)); 047 } 048 049 public static String hex(byte[] bytes) { 050 return StringUtils.encodeHex(bytes(bytes)); 051 } 052 053 public static String hex(String string) { 054 return hex(StringUtils.toBytes(string)); 055 } 056 057}