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