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Posted by md5 on July Tue 22nd 12:03 AM - Never Expires
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  1. function utf8_encode ( str_data ) {
  2.     // http://kevin.vanzonneveld.net
  3.     // +   original by: Webtoolkit.info (http://www.webtoolkit.info/)
  4.     // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)        
  5.     // *     example 1: utf8_encode('Kevin van Zonneveld');
  6.     // *     returns 1: 'Kevin van Zonneveld'
  7.  
  8.     str_data = str_data.replace(/\r\n/g,"\n");
  9.     var tmp_arr = [], ac = 0;
  10.  
  11.     for (var n = 0; n < str_data.length; n++) {
  12.         var c = str_data.charCodeAt(n);
  13.         if (c < 128) {
  14.             tmp_arr[ac++] = String.fromCharCode(c);
  15.         } else if((c > 127) && (c < 2048)) {
  16.             tmp_arr[ac++] = String.fromCharCode((c >> 6) | 192);
  17.             tmp_arr[ac++] = String.fromCharCode((c & 63) | 128);
  18.         } else {
  19.             tmp_arr[ac++] = String.fromCharCode((c >> 12) | 224);
  20.             tmp_arr[ac++] = String.fromCharCode(((c >> 6) & 63) | 128);
  21.             tmp_arr[ac++] = String.fromCharCode((c & 63) | 128);
  22.         }
  23.     }
  24.    
  25.     return tmp_arr.join('');
  26. }
  27.  
  28. function md5 ( str ) {
  29.     // http://kevin.vanzonneveld.net
  30.     // +   original by: Webtoolkit.info (http://www.webtoolkit.info/)
  31.     // + namespaced by: Michael White (http://crestidg.com)
  32.     // -    depends on: utf8_encode
  33.     // *     example 1: md5('Kevin van Zonneveld');
  34.     // *     returns 1: '6e658d4bfcb59cc13f96c14450ac40b9'
  35.  
  36.     var RotateLeft = function(lValue, iShiftBits) {
  37.             return (lValue<<iShiftBits) | (lValue>>>(32-iShiftBits));
  38.         };
  39.  
  40.     var AddUnsigned = function(lX,lY) {
  41.             var lX4,lY4,lX8,lY8,lResult;
  42.             lX8 = (lX & 0x80000000);
  43.             lY8 = (lY & 0x80000000);
  44.             lX4 = (lX & 0x40000000);
  45.             lY4 = (lY & 0x40000000);
  46.             lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF);
  47.             if (lX4 & lY4) {
  48.                 return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
  49.             }
  50.             if (lX4 | lY4) {
  51.                 if (lResult & 0x40000000) {
  52.                     return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
  53.                 } else {
  54.                     return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
  55.                 }
  56.             } else {
  57.                 return (lResult ^ lX8 ^ lY8);
  58.             }
  59.         };
  60.  
  61.     var F = function(x,y,z) { return (x & y) | ((~x) & z); };
  62.     var G = function(x,y,z) { return (x & z) | (y & (~z)); };
  63.     var H = function(x,y,z) { return (x ^ y ^ z); };
  64.     var I = function(x,y,z) { return (y ^ (x | (~z))); };
  65.  
  66.     var FF = function(a,b,c,d,x,s,ac) {
  67.             a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac));
  68.             return AddUnsigned(RotateLeft(a, s), b);
  69.         };
  70.  
  71.     var GG = function(a,b,c,d,x,s,ac) {
  72.             a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac));
  73.             return AddUnsigned(RotateLeft(a, s), b);
  74.         };
  75.  
  76.     var HH = function(a,b,c,d,x,s,ac) {
  77.             a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac));
  78.             return AddUnsigned(RotateLeft(a, s), b);
  79.         };
  80.  
  81.     var II = function(a,b,c,d,x,s,ac) {
  82.             a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac));
  83.             return AddUnsigned(RotateLeft(a, s), b);
  84.         };
  85.  
  86.     var ConvertToWordArray = function(str) {
  87.             var lWordCount;
  88.             var lMessageLength = str.length;
  89.             var lNumberOfWords_temp1=lMessageLength + 8;
  90.             var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64;
  91.             var lNumberOfWords = (lNumberOfWords_temp2+1)*16;
  92.             var lWordArray=Array(lNumberOfWords-1);
  93.             var lBytePosition = 0;
  94.             var lByteCount = 0;
  95.             while ( lByteCount < lMessageLength ) {
  96.                 lWordCount = (lByteCount-(lByteCount % 4))/4;
  97.                 lBytePosition = (lByteCount % 4)*8;
  98.                 lWordArray[lWordCount] = (lWordArray[lWordCount] | (str.charCodeAt(lByteCount)<<lBytePosition));
  99.                 lByteCount++;
  100.             }
  101.             lWordCount = (lByteCount-(lByteCount % 4))/4;
  102.             lBytePosition = (lByteCount % 4)*8;
  103.             lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80<<lBytePosition);
  104.             lWordArray[lNumberOfWords-2] = lMessageLength<<3;
  105.             lWordArray[lNumberOfWords-1] = lMessageLength>>>29;
  106.             return lWordArray;
  107.         };
  108.  
  109.     var WordToHex = function(lValue) {
  110.             var WordToHexValue="",WordToHexValue_temp="",lByte,lCount;
  111.             for (lCount = 0;lCount<=3;lCount++) {
  112.                 lByte = (lValue>>>(lCount*8)) & 255;
  113.                 WordToHexValue_temp = "0" + lByte.toString(16);
  114.                 WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2);
  115.             }
  116.             return WordToHexValue;
  117.         };
  118.  
  119.     var x=Array();
  120.     var k,AA,BB,CC,DD,a,b,c,d;
  121.     var S11=7, S12=12, S13=17, S14=22;
  122.     var S21=5, S22=9 , S23=14, S24=20;
  123.     var S31=4, S32=11, S33=16, S34=23;
  124.     var S41=6, S42=10, S43=15, S44=21;
  125.  
  126.     str = utf8_encode(str);
  127.     x = ConvertToWordArray(str);
  128.     a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476;
  129.  
  130.     for (k=0;k<x.length;k+=16) {
  131.         AA=a; BB=b; CC=c; DD=d;
  132.         a=FF(a,b,c,d,x[k+0], S11,0xD76AA478);
  133.         d=FF(d,a,b,c,x[k+1], S12,0xE8C7B756);
  134.         c=FF(c,d,a,b,x[k+2], S13,0x242070DB);
  135.         b=FF(b,c,d,a,x[k+3], S14,0xC1BDCEEE);
  136.         a=FF(a,b,c,d,x[k+4], S11,0xF57C0FAF);
  137.         d=FF(d,a,b,c,x[k+5], S12,0x4787C62A);
  138.         c=FF(c,d,a,b,x[k+6], S13,0xA8304613);
  139.         b=FF(b,c,d,a,x[k+7], S14,0xFD469501);
  140.         a=FF(a,b,c,d,x[k+8], S11,0x698098D8);
  141.         d=FF(d,a,b,c,x[k+9], S12,0x8B44F7AF);
  142.         c=FF(c,d,a,b,x[k+10],S13,0xFFFF5BB1);
  143.         b=FF(b,c,d,a,x[k+11],S14,0x895CD7BE);
  144.         a=FF(a,b,c,d,x[k+12],S11,0x6B901122);
  145.         d=FF(d,a,b,c,x[k+13],S12,0xFD987193);
  146.         c=FF(c,d,a,b,x[k+14],S13,0xA679438E);
  147.         b=FF(b,c,d,a,x[k+15],S14,0x49B40821);
  148.         a=GG(a,b,c,d,x[k+1], S21,0xF61E2562);
  149.         d=GG(d,a,b,c,x[k+6], S22,0xC040B340);
  150.         c=GG(c,d,a,b,x[k+11],S23,0x265E5A51);
  151.         b=GG(b,c,d,a,x[k+0], S24,0xE9B6C7AA);
  152.         a=GG(a,b,c,d,x[k+5], S21,0xD62F105D);
  153.         d=GG(d,a,b,c,x[k+10],S22,0x2441453);
  154.         c=GG(c,d,a,b,x[k+15],S23,0xD8A1E681);
  155.         b=GG(b,c,d,a,x[k+4], S24,0xE7D3FBC8);
  156.         a=GG(a,b,c,d,x[k+9], S21,0x21E1CDE6);
  157.         d=GG(d,a,b,c,x[k+14],S22,0xC33707D6);
  158.         c=GG(c,d,a,b,x[k+3], S23,0xF4D50D87);
  159.         b=GG(b,c,d,a,x[k+8], S24,0x455A14ED);
  160.         a=GG(a,b,c,d,x[k+13],S21,0xA9E3E905);
  161.         d=GG(d,a,b,c,x[k+2], S22,0xFCEFA3F8);
  162.         c=GG(c,d,a,b,x[k+7], S23,0x676F02D9);
  163.         b=GG(b,c,d,a,x[k+12],S24,0x8D2A4C8A);
  164.         a=HH(a,b,c,d,x[k+5], S31,0xFFFA3942);
  165.         d=HH(d,a,b,c,x[k+8], S32,0x8771F681);
  166.         c=HH(c,d,a,b,x[k+11],S33,0x6D9D6122);
  167.         b=HH(b,c,d,a,x[k+14],S34,0xFDE5380C);
  168.         a=HH(a,b,c,d,x[k+1], S31,0xA4BEEA44);
  169.         d=HH(d,a,b,c,x[k+4], S32,0x4BDECFA9);
  170.         c=HH(c,d,a,b,x[k+7], S33,0xF6BB4B60);
  171.         b=HH(b,c,d,a,x[k+10],S34,0xBEBFBC70);
  172.         a=HH(a,b,c,d,x[k+13],S31,0x289B7EC6);
  173.         d=HH(d,a,b,c,x[k+0], S32,0xEAA127FA);
  174.         c=HH(c,d,a,b,x[k+3], S33,0xD4EF3085);
  175.         b=HH(b,c,d,a,x[k+6], S34,0x4881D05);
  176.         a=HH(a,b,c,d,x[k+9], S31,0xD9D4D039);
  177.         d=HH(d,a,b,c,x[k+12],S32,0xE6DB99E5);
  178.         c=HH(c,d,a,b,x[k+15],S33,0x1FA27CF8);
  179.         b=HH(b,c,d,a,x[k+2], S34,0xC4AC5665);
  180.         a=II(a,b,c,d,x[k+0], S41,0xF4292244);
  181.         d=II(d,a,b,c,x[k+7], S42,0x432AFF97);
  182.         c=II(c,d,a,b,x[k+14],S43,0xAB9423A7);
  183.         b=II(b,c,d,a,x[k+5], S44,0xFC93A039);
  184.         a=II(a,b,c,d,x[k+12],S41,0x655B59C3);
  185.         d=II(d,a,b,c,x[k+3], S42,0x8F0CCC92);
  186.         c=II(c,d,a,b,x[k+10],S43,0xFFEFF47D);
  187.         b=II(b,c,d,a,x[k+1], S44,0x85845DD1);
  188.         a=II(a,b,c,d,x[k+8], S41,0x6FA87E4F);
  189.         d=II(d,a,b,c,x[k+15],S42,0xFE2CE6E0);
  190.         c=II(c,d,a,b,x[k+6], S43,0xA3014314);
  191.         b=II(b,c,d,a,x[k+13],S44,0x4E0811A1);
  192.         a=II(a,b,c,d,x[k+4], S41,0xF7537E82);
  193.         d=II(d,a,b,c,x[k+11],S42,0xBD3AF235);
  194.         c=II(c,d,a,b,x[k+2], S43,0x2AD7D2BB);
  195.         b=II(b,c,d,a,x[k+9], S44,0xEB86D391);
  196.         a=AddUnsigned(a,AA);
  197.         b=AddUnsigned(b,BB);
  198.         c=AddUnsigned(c,CC);
  199.         d=AddUnsigned(d,DD);
  200.     }
  201.  
  202.     var temp = WordToHex(a)+WordToHex(b)+WordToHex(c)+WordToHex(d);
  203.  
  204.     return temp.toLowerCase();
  205. }

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