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- /**
- * http://www.myersdaily.org/joseph/javascript/md5-text.html
- * http://pajhome.org.uk/crypt/md5
- * https://github.com/wbond/md5-js
- */
- function md5cycle(x, k) {
- var a = x[0], b = x[1], c = x[2], d = x[3];
- a = ff(a, b, c, d, k[0], 7, -680876936);
- d = ff(d, a, b, c, k[1], 12, -389564586);
- c = ff(c, d, a, b, k[2], 17, 606105819);
- b = ff(b, c, d, a, k[3], 22, -1044525330);
- a = ff(a, b, c, d, k[4], 7, -176418897);
- d = ff(d, a, b, c, k[5], 12, 1200080426);
- c = ff(c, d, a, b, k[6], 17, -1473231341);
- b = ff(b, c, d, a, k[7], 22, -45705983);
- a = ff(a, b, c, d, k[8], 7, 1770035416);
- d = ff(d, a, b, c, k[9], 12, -1958414417);
- c = ff(c, d, a, b, k[10], 17, -42063);
- b = ff(b, c, d, a, k[11], 22, -1990404162);
- a = ff(a, b, c, d, k[12], 7, 1804603682);
- d = ff(d, a, b, c, k[13], 12, -40341101);
- c = ff(c, d, a, b, k[14], 17, -1502002290);
- b = ff(b, c, d, a, k[15], 22, 1236535329);
- a = gg(a, b, c, d, k[1], 5, -165796510);
- d = gg(d, a, b, c, k[6], 9, -1069501632);
- c = gg(c, d, a, b, k[11], 14, 643717713);
- b = gg(b, c, d, a, k[0], 20, -373897302);
- a = gg(a, b, c, d, k[5], 5, -701558691);
- d = gg(d, a, b, c, k[10], 9, 38016083);
- c = gg(c, d, a, b, k[15], 14, -660478335);
- b = gg(b, c, d, a, k[4], 20, -405537848);
- a = gg(a, b, c, d, k[9], 5, 568446438);
- d = gg(d, a, b, c, k[14], 9, -1019803690);
- c = gg(c, d, a, b, k[3], 14, -187363961);
- b = gg(b, c, d, a, k[8], 20, 1163531501);
- a = gg(a, b, c, d, k[13], 5, -1444681467);
- d = gg(d, a, b, c, k[2], 9, -51403784);
- c = gg(c, d, a, b, k[7], 14, 1735328473);
- b = gg(b, c, d, a, k[12], 20, -1926607734);
- a = hh(a, b, c, d, k[5], 4, -378558);
- d = hh(d, a, b, c, k[8], 11, -2022574463);
- c = hh(c, d, a, b, k[11], 16, 1839030562);
- b = hh(b, c, d, a, k[14], 23, -35309556);
- a = hh(a, b, c, d, k[1], 4, -1530992060);
- d = hh(d, a, b, c, k[4], 11, 1272893353);
- c = hh(c, d, a, b, k[7], 16, -155497632);
- b = hh(b, c, d, a, k[10], 23, -1094730640);
- a = hh(a, b, c, d, k[13], 4, 681279174);
- d = hh(d, a, b, c, k[0], 11, -358537222);
- c = hh(c, d, a, b, k[3], 16, -722521979);
- b = hh(b, c, d, a, k[6], 23, 76029189);
- a = hh(a, b, c, d, k[9], 4, -640364487);
- d = hh(d, a, b, c, k[12], 11, -421815835);
- c = hh(c, d, a, b, k[15], 16, 530742520);
- b = hh(b, c, d, a, k[2], 23, -995338651);
- a = ii(a, b, c, d, k[0], 6, -198630844);
- d = ii(d, a, b, c, k[7], 10, 1126891415);
- c = ii(c, d, a, b, k[14], 15, -1416354905);
- b = ii(b, c, d, a, k[5], 21, -57434055);
- a = ii(a, b, c, d, k[12], 6, 1700485571);
- d = ii(d, a, b, c, k[3], 10, -1894986606);
- c = ii(c, d, a, b, k[10], 15, -1051523);
- b = ii(b, c, d, a, k[1], 21, -2054922799);
- a = ii(a, b, c, d, k[8], 6, 1873313359);
- d = ii(d, a, b, c, k[15], 10, -30611744);
- c = ii(c, d, a, b, k[6], 15, -1560198380);
- b = ii(b, c, d, a, k[13], 21, 1309151649);
- a = ii(a, b, c, d, k[4], 6, -145523070);
- d = ii(d, a, b, c, k[11], 10, -1120210379);
- c = ii(c, d, a, b, k[2], 15, 718787259);
- b = ii(b, c, d, a, k[9], 21, -343485551);
- x[0] = add32(a, x[0]);
- x[1] = add32(b, x[1]);
- x[2] = add32(c, x[2]);
- x[3] = add32(d, x[3]);
- }
- function cmn(q, a, b, x, s, t) {
- a = add32(add32(a, q), add32(x, t));
- return add32((a << s) | (a >>> (32 - s)), b);
- }
- function ff(a, b, c, d, x, s, t) {
- return cmn((b & c) | ((~b) & d), a, b, x, s, t);
- }
- function gg(a, b, c, d, x, s, t) {
- return cmn((b & d) | (c & (~d)), a, b, x, s, t);
- }
- function hh(a, b, c, d, x, s, t) {
- return cmn(b ^ c ^ d, a, b, x, s, t);
- }
- function ii(a, b, c, d, x, s, t) {
- return cmn(c ^ (b | (~d)), a, b, x, s, t);
- }
- function md5blk(s) { /* I figured global was faster. */
- var md5blks = [], i; /* Andy King said do it this way. */
- for (i = 0; i < 64; i += 4) {
- md5blks[i >> 2] = s.charCodeAt(i) +
- (s.charCodeAt(i + 1) << 8) +
- (s.charCodeAt(i + 2) << 16) +
- (s.charCodeAt(i + 3) << 24);
- }
- return md5blks;
- }
- var hex_chr = '0123456789abcdef'.split('');
- function rhex(n) {
- var s = '', j = 0;
- for (; j < 4; j++)
- s += hex_chr[(n >> (j * 8 + 4)) & 0x0F] +
- hex_chr[(n >> (j * 8)) & 0x0F];
- return s;
- }
- function hex(x) {
- for (var i = 0; i < x.length; i++)
- x[i] = rhex(x[i]);
- return x.join('');
- }
- var add32 = function (a, b) {
- return (a + b) & 0xFFFFFFFF;
- }
- function getCtx() {
- var ctx = {};
- ctx.state = [1732584193, -271733879, -1732584194, 271733878];
- ctx.tail = '';
- ctx.size = 0;
- ctx.update = function (s, isBinStr) {
- if (!isBinStr) s = unescape(encodeURIComponent(s));
- ctx.size += s.length;
- s = ctx.tail + s;
- var i, state = ctx.state;
- for (i = 64; i <= s.length; i += 64) {
- md5cycle(state, md5blk(s.substring(i - 64, i)));
- }
- ctx.tail = s.substring(i - 64);
- return ctx;
- };
- ctx.digest = function (encode) {
- var i,
- n = ctx.size,
- state = ctx.state,
- s = ctx.tail,
- tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
- for (i = 0; i < s.length; i++)
- tail[i >> 2] |= s.charCodeAt(i) << ((i % 4) << 3);
- tail[i >> 2] |= 0x80 << ((i % 4) << 3);
- if (i > 55) {
- md5cycle(state, tail);
- for (i = 0; i < 16; i++) tail[i] = 0;
- }
- tail[14] = n * 8;
- md5cycle(state, tail);
- return hex(state);
- };
- return ctx;
- }
- var md5 = function (s, isBinStr) {
- return getCtx().update(s, isBinStr).digest('hex');
- }
- if (md5('hello') !== '5d41402abc4b2a76b9719d911017c592') {
- add32 = function (x, y) {
- var lsw = (x & 0xFFFF) + (y & 0xFFFF),
- msw = (x >> 16) + (y >> 16) + (lsw >> 16);
- return (msw << 16) | (lsw & 0xFFFF);
- }
- }
- md5.getCtx = getCtx;
- module.exports = md5;
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