1 Jek.newPackage('Jek.algorithm'); 2 /** 3 * Calculate the md5 hash of a string. 4 * 5 * @param {String}string 6 */ 7 Jek.algorithm.md5 = function(string) { 8 function rotateLeft(val, shift) { 9 return (val << shift) | (val >>> (32 - shift)); 10 } 11 function addUnsig(lX, lY) { 12 var lX4, lY4, lX8, lY8, lRes; 13 lX8 = (lX & 0x80000000); 14 lY8 = (lY & 0x80000000); 15 lX4 = (lX & 0x40000000); 16 lY4 = (lY & 0x40000000); 17 lRes = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF); 18 if (lX4 & lY4) { 19 return (lRes ^ 0x80000000 ^ lX8 ^ lY8); 20 } 21 if (lX4 | lY4) { 22 if (lRes & 0x40000000) { 23 return (lRes ^ 0xC0000000 ^ lX8 ^ lY8); 24 } else { 25 return (lRes ^ 0x40000000 ^ lX8 ^ lY8); 26 } 27 } else { 28 return (lRes ^ lX8 ^ lY8); 29 } 30 } 31 function F(x, y, z) { 32 return (x & y) | ((~x) & z); 33 } 34 function G(x, y, z) { 35 return (x & z) | (y & (~z)); 36 } 37 function H(x, y, z) { 38 return (x ^ y ^ z); 39 } 40 function I(x, y, z) { 41 return (y ^ (x | (~z))); 42 } 43 function FF(a, b, c, d, x, s, ac) { 44 a = addUnsig(a, addUnsig(addUnsig(F(b, c, d), x), ac)); 45 return addUnsig(rotateLeft(a, s), b); 46 } 47 function GG(a, b, c, d, x, s, ac) { 48 a = addUnsig(a, addUnsig(addUnsig(G(b, c, d), x), ac)); 49 return addUnsig(rotateLeft(a, s), b); 50 } 51 function HH(a, b, c, d, x, s, ac) { 52 a = addUnsig(a, addUnsig(addUnsig(H(b, c, d), x), ac)); 53 return addUnsig(rotateLeft(a, s), b); 54 } 55 function II(a, b, c, d, x, s, ac) { 56 a = addUnsig(a, addUnsig(addUnsig(I(b, c, d), x), ac)); 57 return addUnsig(rotateLeft(a, s), b); 58 } 59 function convertToWordArray(string) { 60 var lWordCount; 61 var lMessageLength = string.length; 62 var lNumberOfWords_temp1 = lMessageLength + 8; 63 var lNumberOfWords_temp2 = (lNumberOfWords_temp1 - (lNumberOfWords_temp1 % 64)) / 64; 64 var lNumberOfWords = (lNumberOfWords_temp2 + 1) * 16; 65 var lWordArray = Array(lNumberOfWords - 1); 66 var lBytePosition = 0; 67 var lByteCount = 0; 68 while (lByteCount < lMessageLength) { 69 lWordCount = (lByteCount - (lByteCount % 4)) / 4; 70 lBytePosition = (lByteCount % 4) * 8; 71 lWordArray[lWordCount] = (lWordArray[lWordCount] | (string 72 .charCodeAt(lByteCount) << lBytePosition)); 73 lByteCount++; 74 } 75 lWordCount = (lByteCount - (lByteCount % 4)) / 4; 76 lBytePosition = (lByteCount % 4) * 8; 77 lWordArray[lWordCount] = lWordArray[lWordCount] 78 | (0x80 << lBytePosition); 79 lWordArray[lNumberOfWords - 2] = lMessageLength << 3; 80 lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29; 81 return lWordArray; 82 } 83 function wordToHex(lValue) { 84 var wordToHexValue = "", wordToHexValue_temp = "", lByte, lCount; 85 for (lCount = 0; lCount <= 3; lCount++) { 86 lByte = (lValue >>> (lCount * 8)) & 255; 87 wordToHexValue_temp = "0" + lByte.toString(16); 88 wordToHexValue = wordToHexValue 89 + wordToHexValue_temp.substr( 90 wordToHexValue_temp.length - 2, 2); 91 } 92 return wordToHexValue; 93 } 94 var x = Array(); 95 var k, AA, BB, CC, DD, a, b, c, d; 96 var S11 = 7, S12 = 12, S13 = 17, S14 = 22; 97 var S21 = 5, S22 = 9, S23 = 14, S24 = 20; 98 var S31 = 4, S32 = 11, S33 = 16, S34 = 23; 99 var S41 = 6, S42 = 10, S43 = 15, S44 = 21; 100 string = Jek.conversion.utf8Encode(string); 101 x = convertToWordArray(string); 102 a = 0x67452301; 103 b = 0xEFCDAB89; 104 c = 0x98BADCFE; 105 d = 0x10325476; 106 for (k = 0; k < x.length; k += 16) { 107 AA = a; 108 BB = b; 109 CC = c; 110 DD = d; 111 a = FF(a, b, c, d, x[k + 0], S11, 0xD76AA478); 112 d = FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756); 113 c = FF(c, d, a, b, x[k + 2], S13, 0x242070DB); 114 b = FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE); 115 a = FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF); 116 d = FF(d, a, b, c, x[k + 5], S12, 0x4787C62A); 117 c = FF(c, d, a, b, x[k + 6], S13, 0xA8304613); 118 b = FF(b, c, d, a, x[k + 7], S14, 0xFD469501); 119 a = FF(a, b, c, d, x[k + 8], S11, 0x698098D8); 120 d = FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF); 121 c = FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1); 122 b = FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE); 123 a = FF(a, b, c, d, x[k + 12], S11, 0x6B901122); 124 d = FF(d, a, b, c, x[k + 13], S12, 0xFD987193); 125 c = FF(c, d, a, b, x[k + 14], S13, 0xA679438E); 126 b = FF(b, c, d, a, x[k + 15], S14, 0x49B40821); 127 a = GG(a, b, c, d, x[k + 1], S21, 0xF61E2562); 128 d = GG(d, a, b, c, x[k + 6], S22, 0xC040B340); 129 c = GG(c, d, a, b, x[k + 11], S23, 0x265E5A51); 130 b = GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA); 131 a = GG(a, b, c, d, x[k + 5], S21, 0xD62F105D); 132 d = GG(d, a, b, c, x[k + 10], S22, 0x2441453); 133 c = GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681); 134 b = GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8); 135 a = GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6); 136 d = GG(d, a, b, c, x[k + 14], S22, 0xC33707D6); 137 c = GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87); 138 b = GG(b, c, d, a, x[k + 8], S24, 0x455A14ED); 139 a = GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905); 140 d = GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8); 141 c = GG(c, d, a, b, x[k + 7], S23, 0x676F02D9); 142 b = GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A); 143 a = HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942); 144 d = HH(d, a, b, c, x[k + 8], S32, 0x8771F681); 145 c = HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122); 146 b = HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C); 147 a = HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44); 148 d = HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9); 149 c = HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60); 150 b = HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70); 151 a = HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6); 152 d = HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA); 153 c = HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085); 154 b = HH(b, c, d, a, x[k + 6], S34, 0x4881D05); 155 a = HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039); 156 d = HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5); 157 c = HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8); 158 b = HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665); 159 a = II(a, b, c, d, x[k + 0], S41, 0xF4292244); 160 d = II(d, a, b, c, x[k + 7], S42, 0x432AFF97); 161 c = II(c, d, a, b, x[k + 14], S43, 0xAB9423A7); 162 b = II(b, c, d, a, x[k + 5], S44, 0xFC93A039); 163 a = II(a, b, c, d, x[k + 12], S41, 0x655B59C3); 164 d = II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92); 165 c = II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D); 166 b = II(b, c, d, a, x[k + 1], S44, 0x85845DD1); 167 a = II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F); 168 d = II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0); 169 c = II(c, d, a, b, x[k + 6], S43, 0xA3014314); 170 b = II(b, c, d, a, x[k + 13], S44, 0x4E0811A1); 171 a = II(a, b, c, d, x[k + 4], S41, 0xF7537E82); 172 d = II(d, a, b, c, x[k + 11], S42, 0xBD3AF235); 173 c = II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB); 174 b = II(b, c, d, a, x[k + 9], S44, 0xEB86D391); 175 a = addUnsig(a, AA); 176 b = addUnsig(b, BB); 177 c = addUnsig(c, CC); 178 d = addUnsig(d, DD); 179 } 180 var res = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d); 181 return res.toLowerCase(); 182 };