You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
215 lines
6.7 KiB
215 lines
6.7 KiB
/* |
|
* Browser-compatible JavaScript MD5 |
|
* |
|
* Modification of JavaScript MD5 |
|
* https://github.com/blueimp/JavaScript-MD5 |
|
* |
|
* Copyright 2011, Sebastian Tschan |
|
* https://blueimp.net |
|
* |
|
* Licensed under the MIT license: |
|
* https://opensource.org/licenses/MIT |
|
* |
|
* Based on |
|
* A JavaScript implementation of the RSA Data Security, Inc. MD5 Message |
|
* Digest Algorithm, as defined in RFC 1321. |
|
* Version 2.2 Copyright (C) Paul Johnston 1999 - 2009 |
|
* 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(bytes) { |
|
if (typeof bytes === 'string') { |
|
var msg = unescape(encodeURIComponent(bytes)); // UTF8 escape |
|
|
|
bytes = new Uint8Array(msg.length); |
|
|
|
for (var i = 0; i < msg.length; ++i) { |
|
bytes[i] = msg.charCodeAt(i); |
|
} |
|
} |
|
|
|
return md5ToHexEncodedArray(wordsToMd5(bytesToWords(bytes), bytes.length * 8)); |
|
} |
|
/* |
|
* Convert an array of little-endian words to an array of bytes |
|
*/ |
|
|
|
|
|
function md5ToHexEncodedArray(input) { |
|
var output = []; |
|
var length32 = input.length * 32; |
|
var hexTab = '0123456789abcdef'; |
|
|
|
for (var i = 0; i < length32; i += 8) { |
|
var x = input[i >> 5] >>> i % 32 & 0xff; |
|
var hex = parseInt(hexTab.charAt(x >>> 4 & 0x0f) + hexTab.charAt(x & 0x0f), 16); |
|
output.push(hex); |
|
} |
|
|
|
return output; |
|
} |
|
/** |
|
* Calculate output length with padding and bit length |
|
*/ |
|
|
|
|
|
function getOutputLength(inputLength8) { |
|
return (inputLength8 + 64 >>> 9 << 4) + 14 + 1; |
|
} |
|
/* |
|
* Calculate the MD5 of an array of little-endian words, and a bit length. |
|
*/ |
|
|
|
|
|
function wordsToMd5(x, len) { |
|
/* append padding */ |
|
x[len >> 5] |= 0x80 << len % 32; |
|
x[getOutputLength(len) - 1] = 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 = md5ff(a, b, c, d, x[i], 7, -680876936); |
|
d = md5ff(d, a, b, c, x[i + 1], 12, -389564586); |
|
c = md5ff(c, d, a, b, x[i + 2], 17, 606105819); |
|
b = md5ff(b, c, d, a, x[i + 3], 22, -1044525330); |
|
a = md5ff(a, b, c, d, x[i + 4], 7, -176418897); |
|
d = md5ff(d, a, b, c, x[i + 5], 12, 1200080426); |
|
c = md5ff(c, d, a, b, x[i + 6], 17, -1473231341); |
|
b = md5ff(b, c, d, a, x[i + 7], 22, -45705983); |
|
a = md5ff(a, b, c, d, x[i + 8], 7, 1770035416); |
|
d = md5ff(d, a, b, c, x[i + 9], 12, -1958414417); |
|
c = md5ff(c, d, a, b, x[i + 10], 17, -42063); |
|
b = md5ff(b, c, d, a, x[i + 11], 22, -1990404162); |
|
a = md5ff(a, b, c, d, x[i + 12], 7, 1804603682); |
|
d = md5ff(d, a, b, c, x[i + 13], 12, -40341101); |
|
c = md5ff(c, d, a, b, x[i + 14], 17, -1502002290); |
|
b = md5ff(b, c, d, a, x[i + 15], 22, 1236535329); |
|
a = md5gg(a, b, c, d, x[i + 1], 5, -165796510); |
|
d = md5gg(d, a, b, c, x[i + 6], 9, -1069501632); |
|
c = md5gg(c, d, a, b, x[i + 11], 14, 643717713); |
|
b = md5gg(b, c, d, a, x[i], 20, -373897302); |
|
a = md5gg(a, b, c, d, x[i + 5], 5, -701558691); |
|
d = md5gg(d, a, b, c, x[i + 10], 9, 38016083); |
|
c = md5gg(c, d, a, b, x[i + 15], 14, -660478335); |
|
b = md5gg(b, c, d, a, x[i + 4], 20, -405537848); |
|
a = md5gg(a, b, c, d, x[i + 9], 5, 568446438); |
|
d = md5gg(d, a, b, c, x[i + 14], 9, -1019803690); |
|
c = md5gg(c, d, a, b, x[i + 3], 14, -187363961); |
|
b = md5gg(b, c, d, a, x[i + 8], 20, 1163531501); |
|
a = md5gg(a, b, c, d, x[i + 13], 5, -1444681467); |
|
d = md5gg(d, a, b, c, x[i + 2], 9, -51403784); |
|
c = md5gg(c, d, a, b, x[i + 7], 14, 1735328473); |
|
b = md5gg(b, c, d, a, x[i + 12], 20, -1926607734); |
|
a = md5hh(a, b, c, d, x[i + 5], 4, -378558); |
|
d = md5hh(d, a, b, c, x[i + 8], 11, -2022574463); |
|
c = md5hh(c, d, a, b, x[i + 11], 16, 1839030562); |
|
b = md5hh(b, c, d, a, x[i + 14], 23, -35309556); |
|
a = md5hh(a, b, c, d, x[i + 1], 4, -1530992060); |
|
d = md5hh(d, a, b, c, x[i + 4], 11, 1272893353); |
|
c = md5hh(c, d, a, b, x[i + 7], 16, -155497632); |
|
b = md5hh(b, c, d, a, x[i + 10], 23, -1094730640); |
|
a = md5hh(a, b, c, d, x[i + 13], 4, 681279174); |
|
d = md5hh(d, a, b, c, x[i], 11, -358537222); |
|
c = md5hh(c, d, a, b, x[i + 3], 16, -722521979); |
|
b = md5hh(b, c, d, a, x[i + 6], 23, 76029189); |
|
a = md5hh(a, b, c, d, x[i + 9], 4, -640364487); |
|
d = md5hh(d, a, b, c, x[i + 12], 11, -421815835); |
|
c = md5hh(c, d, a, b, x[i + 15], 16, 530742520); |
|
b = md5hh(b, c, d, a, x[i + 2], 23, -995338651); |
|
a = md5ii(a, b, c, d, x[i], 6, -198630844); |
|
d = md5ii(d, a, b, c, x[i + 7], 10, 1126891415); |
|
c = md5ii(c, d, a, b, x[i + 14], 15, -1416354905); |
|
b = md5ii(b, c, d, a, x[i + 5], 21, -57434055); |
|
a = md5ii(a, b, c, d, x[i + 12], 6, 1700485571); |
|
d = md5ii(d, a, b, c, x[i + 3], 10, -1894986606); |
|
c = md5ii(c, d, a, b, x[i + 10], 15, -1051523); |
|
b = md5ii(b, c, d, a, x[i + 1], 21, -2054922799); |
|
a = md5ii(a, b, c, d, x[i + 8], 6, 1873313359); |
|
d = md5ii(d, a, b, c, x[i + 15], 10, -30611744); |
|
c = md5ii(c, d, a, b, x[i + 6], 15, -1560198380); |
|
b = md5ii(b, c, d, a, x[i + 13], 21, 1309151649); |
|
a = md5ii(a, b, c, d, x[i + 4], 6, -145523070); |
|
d = md5ii(d, a, b, c, x[i + 11], 10, -1120210379); |
|
c = md5ii(c, d, a, b, x[i + 2], 15, 718787259); |
|
b = md5ii(b, c, d, a, x[i + 9], 21, -343485551); |
|
a = safeAdd(a, olda); |
|
b = safeAdd(b, oldb); |
|
c = safeAdd(c, oldc); |
|
d = safeAdd(d, oldd); |
|
} |
|
|
|
return [a, b, c, d]; |
|
} |
|
/* |
|
* Convert an array bytes to an array of little-endian words |
|
* Characters >255 have their high-byte silently ignored. |
|
*/ |
|
|
|
|
|
function bytesToWords(input) { |
|
if (input.length === 0) { |
|
return []; |
|
} |
|
|
|
var length8 = input.length * 8; |
|
var output = new Uint32Array(getOutputLength(length8)); |
|
|
|
for (var i = 0; i < length8; i += 8) { |
|
output[i >> 5] |= (input[i / 8] & 0xff) << i % 32; |
|
} |
|
|
|
return output; |
|
} |
|
/* |
|
* Add integers, wrapping at 2^32. This uses 16-bit operations internally |
|
* to work around bugs in some JS interpreters. |
|
*/ |
|
|
|
|
|
function safeAdd(x, y) { |
|
var lsw = (x & 0xffff) + (y & 0xffff); |
|
var msw = (x >> 16) + (y >> 16) + (lsw >> 16); |
|
return msw << 16 | lsw & 0xffff; |
|
} |
|
/* |
|
* Bitwise rotate a 32-bit number to the left. |
|
*/ |
|
|
|
|
|
function bitRotateLeft(num, cnt) { |
|
return num << cnt | num >>> 32 - cnt; |
|
} |
|
/* |
|
* These functions implement the four basic operations the algorithm uses. |
|
*/ |
|
|
|
|
|
function md5cmn(q, a, b, x, s, t) { |
|
return safeAdd(bitRotateLeft(safeAdd(safeAdd(a, q), safeAdd(x, t)), s), b); |
|
} |
|
|
|
function md5ff(a, b, c, d, x, s, t) { |
|
return md5cmn(b & c | ~b & d, a, b, x, s, t); |
|
} |
|
|
|
function md5gg(a, b, c, d, x, s, t) { |
|
return md5cmn(b & d | c & ~d, a, b, x, s, t); |
|
} |
|
|
|
function md5hh(a, b, c, d, x, s, t) { |
|
return md5cmn(b ^ c ^ d, a, b, x, s, t); |
|
} |
|
|
|
function md5ii(a, b, c, d, x, s, t) { |
|
return md5cmn(c ^ (b | ~d), a, b, x, s, t); |
|
} |
|
|
|
export default md5; |