javascript 实现MD5加密,sha1加密,crc32加密
md5
1 md5.js 2 3 /* 4 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message 5 * Digest Algorithm, as defined in RFC 1321. 6 * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002. 7 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet 8 * Distributed under the BSD License 9 * See http://pajhome.org.uk/crypt/md5 for more info. 10 */ 11 12 /* 13 * Configurable variables. You may need to tweak these to be compatible with 14 * the server-side, but the defaults work in most cases. 15 */ 16 var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */ 17 var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */ 18 var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */ 19 20 /* 21 * These are the functions you'll usually want to call 22 * They take string arguments and return either hex or base-64 encoded strings 23 */ 24 function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));} 25 function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));} 26 function str_md5(s){ return binl2str(core_md5(str2binl(s), s.length * chrsz));} 27 function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); } 28 function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); } 29 function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data)); } 30 31 /* 32 * Perform a simple self-test to see if the VM is working 33 */ 34 function md5_vm_test() 35 { 36 return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72"; 37 } 38 39 /* 40 * Calculate the MD5 of an array of little-endian words, and a bit length 41 */ 42 function core_md5(x, len) 43 { 44 /* append padding */ 45 x[len >> 5] |= 0x80 << ((len) % 32); 46 x[(((len + 64) >>> 9) << 4) + 14] = len; 47 48 var a = 1732584193; 49 var b = -271733879; 50 var c = -1732584194; 51 var d = 271733878; 52 53 for(var i = 0; i < x.length; i += 16) 54 { 55 var olda = a; 56 var oldb = b; 57 var oldc = c; 58 var oldd = d; 59 60 a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936); 61 d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586); 62 c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819); 63 b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330); 64 a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897); 65 d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426); 66 c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341); 67 b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983); 68 a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416); 69 d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417); 70 c = md5_ff(c, d, a, b, x[i+10], 17, -42063); 71 b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162); 72 a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682); 73 d = md5_ff(d, a, b, c, x[i+13], 12, -40341101); 74 c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290); 75 b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329); 76 77 a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510); 78 d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632); 79 c = md5_gg(c, d, a, b, x[i+11], 14, 643717713); 80 b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302); 81 a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691); 82 d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083); 83 c = md5_gg(c, d, a, b, x[i+15], 14, -660478335); 84 b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848); 85 a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438); 86 d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690); 87 c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961); 88 b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501); 89 a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467); 90 d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784); 91 c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473); 92 b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734); 93 94 a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558); 95 d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463); 96 c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562); 97 b = md5_hh(b, c, d, a, x[i+14], 23, -35309556); 98 a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060); 99 d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353); 100 c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632); 101 b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640); 102 a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174); 103 d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222); 104 c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979); 105 b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189); 106 a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487); 107 d = md5_hh(d, a, b, c, x[i+12], 11, -421815835); 108 c = md5_hh(c, d, a, b, x[i+15], 16, 530742520); 109 b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651); 110 111 a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844); 112 d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415); 113 c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905); 114 b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055); 115 a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571); 116 d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606); 117 c = md5_ii(c, d, a, b, x[i+10], 15, -1051523); 118 b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799); 119 a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359); 120 d = md5_ii(d, a, b, c, x[i+15], 10, -30611744); 121 c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380); 122 b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649); 123 a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070); 124 d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379); 125 c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259); 126 b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551); 127 128 a = safe_add(a, olda); 129 b = safe_add(b, oldb); 130 c = safe_add(c, oldc); 131 d = safe_add(d, oldd); 132 } 133 return Array(a, b, c, d); 134 135 } 136 137 /* 138 * These functions implement the four basic operations the algorithm uses. 139 */ 140 function md5_cmn(q, a, b, x, s, t) 141 { 142 return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b); 143 } 144 function md5_ff(a, b, c, d, x, s, t) 145 { 146 return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t); 147 } 148 function md5_gg(a, b, c, d, x, s, t) 149 { 150 return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t); 151 } 152 function md5_hh(a, b, c, d, x, s, t) 153 { 154 return md5_cmn(b ^ c ^ d, a, b, x, s, t); 155 } 156 function md5_ii(a, b, c, d, x, s, t) 157 { 158 return md5_cmn(c ^ (b | (~d)), a, b, x, s, t); 159 } 160 161 /* 162 * Calculate the HMAC-MD5, of a key and some data 163 */ 164 function core_hmac_md5(key, data) 165 { 166 var bkey = str2binl(key); 167 if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz); 168 169 var ipad = Array(16), opad = Array(16); 170 for(var i = 0; i < 16; i++) 171 { 172 ipad[i] = bkey[i] ^ 0x36363636; 173 opad[i] = bkey[i] ^ 0x5C5C5C5C; 174 } 175 176 var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz); 177 return core_md5(opad.concat(hash), 512 + 128); 178 } 179 180 /* 181 * Add integers, wrapping at 2^32. This uses 16-bit operations internally 182 * to work around bugs in some JS interpreters. 183 */ 184 function safe_add(x, y) 185 { 186 var lsw = (x & 0xFFFF) + (y & 0xFFFF); 187 var msw = (x >> 16) + (y >> 16) + (lsw >> 16); 188 return (msw << 16) | (lsw & 0xFFFF); 189 } 190 191 /* 192 * Bitwise rotate a 32-bit number to the left. 193 */ 194 function bit_rol(num, cnt) 195 { 196 return (num << cnt) | (num >>> (32 - cnt)); 197 } 198 199 /* 200 * Convert a string to an array of little-endian words 201 * If chrsz is ASCII, characters >255 have their hi-byte silently ignored. 202 */ 203 function str2binl(str) 204 { 205 var bin = Array(); 206 var mask = (1 << chrsz) - 1; 207 for(var i = 0; i < str.length * chrsz; i += chrsz) 208 bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32); 209 return bin; 210 } 211 212 /* 213 * Convert an array of little-endian words to a string 214 */ 215 function binl2str(bin) 216 { 217 var str = ""; 218 var mask = (1 << chrsz) - 1; 219 for(var i = 0; i < bin.length * 32; i += chrsz) 220 str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask); 221 return str; 222 } 223 224 /* 225 * Convert an array of little-endian words to a hex string. 226 */ 227 function binl2hex(binarray) 228 { 229 var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef"; 230 var str = ""; 231 for(var i = 0; i < binarray.length * 4; i++) 232 { 233 str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) + 234 hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF); 235 } 236 return str; 237 } 238 239 /* 240 * Convert an array of little-endian words to a base-64 string 241 */ 242 function binl2b64(binarray) 243 { 244 var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; 245 var str = ""; 246 for(var i = 0; i < binarray.length * 4; i += 3) 247 { 248 var triplet = (((binarray[i >> 2] >> 8 * ( i %4)) & 0xFF) << 16) 249 | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 ) 250 | ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF); 251 for(var j = 0; j < 4; j++) 252 { 253 if(i * 8 + j * 6 > binarray.length * 32) str += b64pad; 254 else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F); 255 } 256 } 257 return str; 258 } 259 260 使用方法: 261 262 <script type="text/javascript" src="md5.js"></script> 263 <script> 264 if(hex_md5(document.form.old.value)!=oldpass){ 265 alert("原密码不正确"); 266 document.form.old.value=""; 267 document.form.old.focus(); 268 return false; 269 }</script>
sha1
1 /*sha1 2 * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined 3 * in FIPS PUB 180-1 4 * Version 2.1a Copyright Paul Johnston 2000 - 2002. 5 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet 6 * Distributed under the BSD License 7 * See http://pajhome.org.uk/crypt/md5 for details. 8 */ 9 10 /* 11 * Configurable variables. You may need to tweak these to be compatible with 12 * the server-side, but the defaults work in most cases. 13 */ 14 var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */ 15 var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */ 16 var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */ 17 18 /* 19 * These are the functions you'll usually want to call 20 * They take string arguments and return either hex or base-64 encoded strings 21 */ 22 function hex_sha1(s){return binb2hex(core_sha1(str2binb(s),s.length * chrsz));} 23 function b64_sha1(s){return binb2b64(core_sha1(str2binb(s),s.length * chrsz));} 24 function str_sha1(s){return binb2str(core_sha1(str2binb(s),s.length * chrsz));} 25 function hex_hmac_sha1(key, data){ return binb2hex(core_hmac_sha1(key, data));} 26 function b64_hmac_sha1(key, data){ return binb2b64(core_hmac_sha1(key, data));} 27 function str_hmac_sha1(key, data){ return binb2str(core_hmac_sha1(key, data));} 28 29 /* 30 * Perform a simple self-test to see if the VM is working 31 */ 32 function sha1_vm_test() 33 { 34 return hex_sha1("abc") == "a9993e364706816aba3e25717850c26c9cd0d89d"; 35 } 36 37 /* 38 * Calculate the SHA-1 of an array of big-endian words, and a bit length 39 */ 40 function core_sha1(x, len) 41 { 42 /* append padding */ 43 x[len >> 5] |= 0x80 << (24 - len % 32); 44 x[((len + 64 >> 9) << 4) + 15] = len; 45 46 var w = Array(80); 47 var a = 1732584193; 48 var b = -271733879; 49 var c = -1732584194; 50 var d = 271733878; 51 var e = -1009589776; 52 53 for(var i = 0; i < x.length; i += 16) 54 { 55 var olda = a; 56 var oldb = b; 57 var oldc = c; 58 var oldd = d; 59 var olde = e; 60 61 for(var j = 0; j < 80; j++) 62 { 63 if(j < 16) w[j] = x[i + j]; 64 else w[j] = rol(w[j-3] ^ w[j-8] ^ w[j-14] ^ w[j-16], 1); 65 var t = safe_add(safe_add(rol(a, 5), sha1_ft(j, b, c, d)), 66 safe_add(safe_add(e, w[j]), sha1_kt(j))); 67 e = d; 68 d = c; 69 c = rol(b, 30); 70 b = a; 71 a = t; 72 } 73 74 a = safe_add(a, olda); 75 b = safe_add(b, oldb); 76 c = safe_add(c, oldc); 77 d = safe_add(d, oldd); 78 e = safe_add(e, olde); 79 } 80 return Array(a, b, c, d, e); 81 82 } 83 84 /* 85 * Perform the appropriate triplet combination function for the current 86 * iteration 87 */ 88 function sha1_ft(t, b, c, d) 89 { 90 if(t < 20) return (b & c) | ((~b) & d); 91 if(t < 40) return b ^ c ^ d; 92 if(t < 60) return (b & c) | (b & d) | (c & d); 93 return b ^ c ^ d; 94 } 95 96 /* 97 * Determine the appropriate additive constant for the current iteration 98 */ 99 function sha1_kt(t) 100 { 101 return (t < 20) ? 1518500249 : (t < 40) ? 1859775393 : 102 (t < 60) ? -1894007588 : -899497514; 103 } 104 105 /* 106 * Calculate the HMAC-SHA1 of a key and some data 107 */ 108 function core_hmac_sha1(key, data) 109 { 110 var bkey = str2binb(key); 111 if(bkey.length > 16) bkey = core_sha1(bkey, key.length * chrsz); 112 113 var ipad = Array(16), opad = Array(16); 114 for(var i = 0; i < 16; i++) 115 { 116 ipad[i] = bkey[i] ^ 0x36363636; 117 opad[i] = bkey[i] ^ 0x5C5C5C5C; 118 } 119 120 var hash = core_sha1(ipad.concat(str2binb(data)), 512 + data.length * chrsz); 121 return core_sha1(opad.concat(hash), 512 + 160); 122 } 123 124 /* 125 * Add integers, wrapping at 2^32. This uses 16-bit operations internally 126 * to work around bugs in some JS interpreters. 127 */ 128 function safe_add(x, y) 129 { 130 var lsw = (x & 0xFFFF) + (y & 0xFFFF); 131 var msw = (x >> 16) + (y >> 16) + (lsw >> 16); 132 return (msw << 16) | (lsw & 0xFFFF); 133 } 134 135 /* 136 * Bitwise rotate a 32-bit number to the left. 137 */ 138 function rol(num, cnt) 139 { 140 return (num << cnt) | (num >>> (32 - cnt)); 141 } 142 143 /* 144 * Convert an 8-bit or 16-bit string to an array of big-endian words 145 * In 8-bit function, characters >255 have their hi-byte silently ignored. 146 */ 147 function str2binb(str) 148 { 149 var bin = Array(); 150 var mask = (1 << chrsz) - 1; 151 for(var i = 0; i < str.length * chrsz; i += chrsz) 152 bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (32 - chrsz - i%32); 153 return bin; 154 } 155 156 /* 157 * Convert an array of big-endian words to a string 158 */ 159 function binb2str(bin) 160 { 161 var str = ""; 162 var mask = (1 << chrsz) - 1; 163 for(var i = 0; i < bin.length * 32; i += chrsz) 164 str += String.fromCharCode((bin[i>>5] >>> (32 - chrsz - i%32)) & mask); 165 return str; 166 } 167 168 /* 169 * Convert an array of big-endian words to a hex string. 170 */ 171 function binb2hex(binarray) 172 { 173 var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef"; 174 var str = ""; 175 for(var i = 0; i < binarray.length * 4; i++) 176 { 177 str += hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8+4)) & 0xF) + 178 hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8 )) & 0xF); 179 } 180 return str; 181 } 182 183 /* 184 * Convert an array of big-endian words to a base-64 string 185 */ 186 function binb2b64(binarray) 187 { 188 var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; 189 var str = ""; 190 for(var i = 0; i < binarray.length * 4; i += 3) 191 { 192 var triplet = (((binarray[i >> 2] >> 8 * (3 - i %4)) & 0xFF) << 16) 193 | (((binarray[i+1 >> 2] >> 8 * (3 - (i+1)%4)) & 0xFF) << 8 ) 194 | ((binarray[i+2 >> 2] >> 8 * (3 - (i+2)%4)) & 0xFF); 195 for(var j = 0; j < 4; j++) 196 { 197 if(i * 8 + j * 6 > binarray.length * 32) str += b64pad; 198 else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F); 199 } 200 } 201 return str; 202 }
crc32
1 function crc32(Instr) 2 { 3 if(typeof(window.Crc32Table)!="undefined")return; 4 window.Crc32Table=new Array(256); 5 var i,j; 6 var Crc; 7 for(i=0; i<256; i++) 8 { 9 Crc=i; 10 for(j=0; j<8; j++) 11 { 12 if(Crc & 1) 13 Crc=((Crc >> 1)& 0x7FFFFFFF) ^ 0xEDB88320; 14 else 15 Crc=((Crc >> 1)& 0x7FFFFFFF); 16 } 17 Crc32Table[i]=Crc; 18 } 19 if (typeof Instr != "string") Instr = "" + Instr; 20 Crc=0xFFFFFFFF; 21 for(i=0; i<Instr.length; i++) 22 Crc=((Crc >> 8)&0x00FFFFFF) ^ Crc32Table[(Crc & 0xFF)^ Instr.charCodeAt(i)]; 23 Crc ^=0xFFFFFFFF; 24 return Crc; 25 }
