| // Copyright 2019 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| /* |
| * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message |
| * Digest Algorithm, as defined in RFC 1321. |
| * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002. |
| * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet |
| * Distributed under the BSD License |
| * See http://pajhome.org.uk/crypt/md5 for more info. |
| */ |
| function md5(s) { |
| return binl2hex(core_md5(str2binl(s), s.length * 8)); |
| } |
| |
| function core_md5(x, len) { |
| /* append padding */ |
| x[len >> 5] |= 0x80 << ((len) % 32); |
| x[(((len + 64) >>> 9) << 4) + 14] = len; |
| |
| var a = 1732584193; |
| var b = -271733879; |
| var c = -1732584194; |
| var d = 271733878; |
| |
| for (var i = 0; i < x.length; i += 16) { |
| var olda = a; |
| var oldb = b; |
| var oldc = c; |
| var oldd = d; |
| |
| a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936); |
| d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586); |
| c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819); |
| b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330); |
| a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897); |
| d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426); |
| c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341); |
| b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983); |
| a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416); |
| d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417); |
| c = md5_ff(c, d, a, b, x[i + 10], 17, -42063); |
| b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162); |
| a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682); |
| d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101); |
| c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290); |
| b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329); |
| |
| a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510); |
| d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632); |
| c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713); |
| b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302); |
| a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691); |
| d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083); |
| c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335); |
| b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848); |
| a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438); |
| d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690); |
| c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961); |
| b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501); |
| a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467); |
| d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784); |
| c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473); |
| b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734); |
| |
| a = md5_hh(a, b, c, d, x[i + 5], 4, -378558); |
| d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463); |
| c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562); |
| b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556); |
| a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060); |
| d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353); |
| c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632); |
| b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640); |
| a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174); |
| d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222); |
| c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979); |
| b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189); |
| a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487); |
| d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835); |
| c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520); |
| b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651); |
| |
| a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844); |
| d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415); |
| c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905); |
| b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055); |
| a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571); |
| d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606); |
| c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523); |
| b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799); |
| a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359); |
| d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744); |
| c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380); |
| b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649); |
| a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070); |
| d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379); |
| c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259); |
| b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551); |
| |
| a = safe_add(a, olda); |
| b = safe_add(b, oldb); |
| c = safe_add(c, oldc); |
| d = safe_add(d, oldd); |
| } |
| return Array(a, b, c, d); |
| } |
| |
| function md5_cmn(q, a, b, x, s, t) { |
| return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b); |
| } |
| |
| function md5_ff(a, b, c, d, x, s, t) { |
| return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t); |
| } |
| |
| function md5_gg(a, b, c, d, x, s, t) { |
| return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t); |
| } |
| |
| function md5_hh(a, b, c, d, x, s, t) { |
| return md5_cmn(b ^ c ^ d, a, b, x, s, t); |
| } |
| |
| function md5_ii(a, b, c, d, x, s, t) { |
| return md5_cmn(c ^ (b | (~d)), a, b, x, s, t); |
| } |
| |
| function safe_add(x, y) { |
| var lsw = (x & 0xFFFF) + (y & 0xFFFF); |
| var msw = (x >> 16) + (y >> 16) + (lsw >> 16); |
| return (msw << 16) | (lsw & 0xFFFF); |
| } |
| |
| function bit_rol(num, cnt) { |
| return (num << cnt) | (num >>> (32 - cnt)); |
| } |
| |
| function str2binl(str) { |
| var bin = Array(); |
| var mask = (1 << 8) - 1; |
| for (var i = 0; i < str.length * 8; i += 8) |
| bin[i >> 5] |= (str.charCodeAt(i / 8) & mask) << (i % 32); |
| return bin; |
| } |
| |
| function binl2hex(binarray) { |
| var hex_tab = '0123456789abcdef'; |
| var str = ''; |
| for (var i = 0; i < binarray.length * 4; i++) { |
| str += hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8 + 4)) & 0xF) + |
| hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8)) & 0xF); |
| } |
| return str; |
| } |
| |
| module.exports = md5; |