001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019package lucee.commons.digest; 020 021import java.nio.charset.Charset; 022import java.security.MessageDigest; 023import java.security.NoSuchAlgorithmException; 024 025import lucee.commons.io.CharsetUtil; 026 027public class Hash { 028 029 public static final char[] ENCODING_HEX = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'}; 030 public static final char[] ENCODING_HEXUC = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'}; 031 //public static final char[] ENCODING_ASCII = "0123456789abcdefghijklmnopqrstuvwxyz".toCharArray(); 032 private static final byte[] DEL=new byte[]{58}; 033 034 035 public static final String ALGORITHM_MD5="MD5"; 036 public static final String ALGORITHM_SHA_256="SHA-256"; 037 public static final String ALGORITHM_SHA_384="SHA-384"; 038 public static final String ALGORITHM_SHA_512="SHA-512"; 039 public static final String ALGORITHM_SHA="SHA"; 040 041 // MD5 042 public static String md5(byte[] data) throws NoSuchAlgorithmException { 043 return hash(data, ALGORITHM_MD5,ENCODING_HEX); 044 } 045 046 public static String md5(String str) throws NoSuchAlgorithmException { 047 return hash(str, ALGORITHM_MD5,ENCODING_HEX,CharsetUtil.UTF8); 048 } 049 050 public static String md5(String str, Charset charset) throws NoSuchAlgorithmException { 051 return hash(str, ALGORITHM_MD5,ENCODING_HEX,charset); 052 } 053 054 // SHA 055 public static String sha(byte[] data) throws NoSuchAlgorithmException { 056 return hash(data, ALGORITHM_SHA,ENCODING_HEX); 057 } 058 059 public static String sha(String str) throws NoSuchAlgorithmException { 060 return hash(str, ALGORITHM_SHA,ENCODING_HEX,CharsetUtil.UTF8); 061 } 062 063 public static String sha(String str,Charset charset) throws NoSuchAlgorithmException { 064 return hash(str, ALGORITHM_SHA,ENCODING_HEX,charset); 065 } 066 067 068 // SHA256 069 public static String sha256(byte[] data) throws NoSuchAlgorithmException { 070 return hash(data, ALGORITHM_SHA_256,ENCODING_HEX); 071 } 072 073 public static String sha256(String str) throws NoSuchAlgorithmException { 074 return hash(str, ALGORITHM_SHA_256,ENCODING_HEX,CharsetUtil.UTF8); 075 } 076 077 public static String sha256(String str,Charset charset) throws NoSuchAlgorithmException { 078 return hash(str, ALGORITHM_SHA_256,ENCODING_HEX,charset); 079 } 080 081 082 // SHA384 083 public static String sha384(byte[] data) throws NoSuchAlgorithmException { 084 return hash(data, ALGORITHM_SHA_384,ENCODING_HEX); 085 } 086 087 public static String sha384(String str) throws NoSuchAlgorithmException { 088 return hash(str, ALGORITHM_SHA_384,ENCODING_HEX,CharsetUtil.UTF8); 089 } 090 091 public static String sha384(String str,Charset charset) throws NoSuchAlgorithmException { 092 return hash(str, ALGORITHM_SHA_384,ENCODING_HEX,charset); 093 } 094 095 096 // SHA384 097 public static String sha512(byte[] data) throws NoSuchAlgorithmException { 098 return hash(data, ALGORITHM_SHA_512,ENCODING_HEX); 099 } 100 101 public static String sha512(String str) throws NoSuchAlgorithmException { 102 return hash(str, ALGORITHM_SHA_512,ENCODING_HEX,CharsetUtil.UTF8); 103 } 104 105 public static String sha512(String str,Charset charset) throws NoSuchAlgorithmException { 106 return hash(str, ALGORITHM_SHA_512,ENCODING_HEX,charset); 107 } 108 109 110 public static String hash(String str, String nonce, String algorithm,char[] encoding) throws NoSuchAlgorithmException { 111 MessageDigest md=MessageDigest.getInstance(algorithm); 112 md.reset(); 113 md.update(toBytes(str, CharsetUtil.UTF8)); 114 md.update(DEL); 115 md.update(toBytes(nonce, CharsetUtil.UTF8)); 116 return new String( enc(md.digest(),encoding)); // no charset needed because all characters are below us-ascii (hex) 117 } 118 119 public static String hash(String input, String algorithm, int numIterations) throws NoSuchAlgorithmException { 120 return hash(input, algorithm, numIterations, ENCODING_HEXUC); 121 } 122 123 public static String hash(String str, String algorithm, int numIterations,char[] encoding) throws NoSuchAlgorithmException { 124 try { 125 MessageDigest md=MessageDigest.getInstance(algorithm),mdc; 126 for(int i=0;i<numIterations;i++){ 127 mdc=(MessageDigest) md.clone(); 128 mdc.reset(); 129 mdc.update(toBytes(str, CharsetUtil.UTF8)); 130 str=new String(enc(mdc.digest(),encoding)); 131 } 132 return str; 133 } 134 catch (CloneNotSupportedException e) {} 135 136 // if not possible to clone the MessageDigest create always a new instance 137 for(int i=0;i<numIterations;i++){ 138 str=hash(str, algorithm,encoding,CharsetUtil.UTF8); 139 } 140 return str; 141 } 142 143 144 145 public static String hash(String str, String algorithm,char[] encoding, Charset charset) throws NoSuchAlgorithmException { 146 return hash(toBytes(str, charset), algorithm,encoding); 147 } 148 149 public static String hash(byte[] data, String algorithm,char[] encoding) throws NoSuchAlgorithmException { 150 MessageDigest md=MessageDigest.getInstance(algorithm); 151 md.reset(); 152 md.update(data); 153 return new String( enc(md.digest(),encoding)); // no charset needed because all characters are below us-ascii (hex) 154 } 155 156 private static byte[] toBytes(String str, Charset charset) { 157 if (str==null) return null; 158 return str.getBytes(charset); 159 } 160 161 public static String toHexString(byte[] data, boolean upperCase) { 162 return new String(enc(data, upperCase?ENCODING_HEXUC:ENCODING_HEX)); 163 } 164 private static char[] enc(byte[] data,char[] enc) { 165 166 int len = data.length; 167 char[] out = new char[len << 1]; 168 // two characters form the hex value. 169 for (int i = 0, j = 0; i < len; i++) { 170 out[j++] = enc[(0xF0 & data[i]) >>> 4]; 171 out[j++] = enc[0x0F & data[i]]; 172 } 173 return out; 174 } 175}