자바스크립트로 md5구현

function md5(str) { // discuss at: http://phpjs.org/functions/md5/ // original by: Webtoolkit.info (http://www.webtoolkit.info/) // improved by: Michael White (http://getsprink.com) // improved by: Jack // improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net) // input by: Brett Zamir (http://brett-zamir.me) // bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net) // depends on: utf8_encode // example 1: md5('Kevin van Zonneveld'); // returns 1: '6e658d4bfcb59cc13f96c14450ac40b9' var xl; var rotateLeft = function(lValue, iShiftBits) { return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits)); }; var addUnsigned = function(lX, lY) { var lX4, lY4, lX8, lY8, lResult; lX8 = (lX & 0x80000000); lY8 = (lY & 0x80000000); lX4 = (lX & 0x40000000); lY4 = (lY & 0x40000000); lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF); if (lX4 & lY4) { return (lResult ^ 0x80000000 ^ lX8 ^ lY8); } if (lX4 | lY4) { if (lResult & 0x40000000) { return (lResult ^ 0xC0000000 ^ lX8 ^ lY8); } else { return (lResult ^ 0x40000000 ^ lX8 ^ lY8); } } else { return (lResult ^ lX8 ^ lY8); } }; var _F = function(x, y, z) { return (x & y) | ((~x) & z); }; var _G = function(x, y, z) { return (x & z) | (y & (~z)); }; var _H = function(x, y, z) { return (x ^ y ^ z); }; var _I = function(x, y, z) { return (y ^ (x | (~z))); }; var _FF = function(a, b, c, d, x, s, ac) { a = addUnsigned(a, addUnsigned(addUnsigned(_F(b, c, d), x), ac)); return addUnsigned(rotateLeft(a, s), b); }; var _GG = function(a, b, c, d, x, s, ac) { a = addUnsigned(a, addUnsigned(addUnsigned(_G(b, c, d), x), ac)); return addUnsigned(rotateLeft(a, s), b); }; var _HH = function(a, b, c, d, x, s, ac) { a = addUnsigned(a, addUnsigned(addUnsigned(_H(b, c, d), x), ac)); return addUnsigned(rotateLeft(a, s), b); }; var _II = function(a, b, c, d, x, s, ac) { a = addUnsigned(a, addUnsigned(addUnsigned(_I(b, c, d), x), ac)); return addUnsigned(rotateLeft(a, s), b); }; var convertToWordArray = function(str) { var lWordCount; var lMessageLength = str.length; var lNumberOfWords_temp1 = lMessageLength + 8; var lNumberOfWords_temp2 = (lNumberOfWords_temp1 - (lNumberOfWords_temp1 % 64)) / 64; var lNumberOfWords = (lNumberOfWords_temp2 + 1) * 16; var lWordArray = new Array(lNumberOfWords - 1); var lBytePosition = 0; var lByteCount = 0; while (lByteCount < lMessageLength) { lWordCount = (lByteCount - (lByteCount % 4)) / 4; lBytePosition = (lByteCount % 4) * 8; lWordArray[lWordCount] = (lWordArray[lWordCount] | (str.charCodeAt(lByteCount) << lBytePosition)); lByteCount++; } lWordCount = (lByteCount - (lByteCount % 4)) / 4; lBytePosition = (lByteCount % 4) * 8; lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition); lWordArray[lNumberOfWords - 2] = lMessageLength << 3; lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29; return lWordArray; }; var wordToHex = function(lValue) { var wordToHexValue = '', wordToHexValue_temp = '', lByte, lCount; for (lCount = 0; lCount <= 3; lCount++) { lByte = (lValue >>> (lCount * 8)) & 255; wordToHexValue_temp = '0' + lByte.toString(16); wordToHexValue = wordToHexValue + wordToHexValue_temp.substr(wordToHexValue_temp.length - 2, 2); } return wordToHexValue; }; var x = [], k, AA, BB, CC, DD, a, b, c, d, S11 = 7, S12 = 12, S13 = 17, S14 = 22, S21 = 5, S22 = 9, S23 = 14, S24 = 20, S31 = 4, S32 = 11, S33 = 16, S34 = 23, S41 = 6, S42 = 10, S43 = 15, S44 = 21; str = this.utf8_encode(str); x = convertToWordArray(str); a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476; xl = x.length; for (k = 0; k < xl; k += 16) { AA = a; BB = b; CC = c; DD = d; a = _FF(a, b, c, d, x[k + 0], S11, 0xD76AA478); d = _FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756); c = _FF(c, d, a, b, x[k + 2], S13, 0x242070DB); b = _FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE); a = _FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF); d = _FF(d, a, b, c, x[k + 5], S12, 0x4787C62A); c = _FF(c, d, a, b, x[k + 6], S13, 0xA8304613); b = _FF(b, c, d, a, x[k + 7], S14, 0xFD469501); a = _FF(a, b, c, d, x[k + 8], S11, 0x698098D8); d = _FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF); c = _FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1); b = _FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE); a = _FF(a, b, c, d, x[k + 12], S11, 0x6B901122); d = _FF(d, a, b, c, x[k + 13], S12, 0xFD987193); c = _FF(c, d, a, b, x[k + 14], S13, 0xA679438E); b = _FF(b, c, d, a, x[k + 15], S14, 0x49B40821); a = _GG(a, b, c, d, x[k + 1], S21, 0xF61E2562); d = _GG(d, a, b, c, x[k + 6], S22, 0xC040B340); c = _GG(c, d, a, b, x[k + 11], S23, 0x265E5A51); b = _GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA); a = _GG(a, b, c, d, x[k + 5], S21, 0xD62F105D); d = _GG(d, a, b, c, x[k + 10], S22, 0x2441453); c = _GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681); b = _GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8); a = _GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6); d = _GG(d, a, b, c, x[k + 14], S22, 0xC33707D6); c = _GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87); b = _GG(b, c, d, a, x[k + 8], S24, 0x455A14ED); a = _GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905); d = _GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8); c = _GG(c, d, a, b, x[k + 7], S23, 0x676F02D9); b = _GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A); a = _HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942); d = _HH(d, a, b, c, x[k + 8], S32, 0x8771F681); c = _HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122); b = _HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C); a = _HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44); d = _HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9); c = _HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60); b = _HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70); a = _HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6); d = _HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA); c = _HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085); b = _HH(b, c, d, a, x[k + 6], S34, 0x4881D05); a = _HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039); d = _HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5); c = _HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8); b = _HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665); a = _II(a, b, c, d, x[k + 0], S41, 0xF4292244); d = _II(d, a, b, c, x[k + 7], S42, 0x432AFF97); c = _II(c, d, a, b, x[k + 14], S43, 0xAB9423A7); b = _II(b, c, d, a, x[k + 5], S44, 0xFC93A039); a = _II(a, b, c, d, x[k + 12], S41, 0x655B59C3); d = _II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92); c = _II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D); b = _II(b, c, d, a, x[k + 1], S44, 0x85845DD1); a = _II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F); d = _II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0); c = _II(c, d, a, b, x[k + 6], S43, 0xA3014314); b = _II(b, c, d, a, x[k + 13], S44, 0x4E0811A1); a = _II(a, b, c, d, x[k + 4], S41, 0xF7537E82); d = _II(d, a, b, c, x[k + 11], S42, 0xBD3AF235); c = _II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB); b = _II(b, c, d, a, x[k + 9], S44, 0xEB86D391); a = addUnsigned(a, AA); b = addUnsigned(b, BB); c = addUnsigned(c, CC); d = addUnsigned(d, DD); } var temp = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d); return temp.toLowerCase(); }