md5-js
Version:
md5 library and cli tools
300 lines (263 loc) • 9.85 kB
JavaScript
/*!
* md5-js v0.0.2
* (c) 2016 hapjs
* Released under the MIT License.
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global.md5 = factory());
}(this, function () { 'use strict';
/*
http://www.npmjs.org/packages/crypt
*/
var base64map
= 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
var crypt = {
// Bit-wise rotation left
rotl: function(n, b) {
return (n << b) | (n >>> (32 - b));
},
// Bit-wise rotation right
rotr: function(n, b) {
return (n << (32 - b)) | (n >>> b);
},
// Swap big-endian to little-endian and vice versa
endian: function(n) {
// If number given, swap endian
if (n.constructor == Number) {
return crypt.rotl(n, 8) & 0x00FF00FF | crypt.rotl(n, 24) & 0xFF00FF00;
}
// Else, assume array and swap all items
for (var i = 0; i < n.length; i++)
n[i] = crypt.endian(n[i]);
return n;
},
// Generate an array of any length of random bytes
randomBytes: function(n) {
for (var bytes = []; n > 0; n--)
bytes.push(Math.floor(Math.random() * 256));
return bytes;
},
// Convert a byte array to big-endian 32-bit words
bytesToWords: function(bytes) {
for (var words = [], i = 0, b = 0; i < bytes.length; i++, b += 8)
words[b >>> 5] |= bytes[i] << (24 - b % 32);
return words;
},
// Convert big-endian 32-bit words to a byte array
wordsToBytes: function(words) {
for (var bytes = [], b = 0; b < words.length * 32; b += 8)
bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
return bytes;
},
// Convert a byte array to a hex string
bytesToHex: function(bytes) {
for (var hex = [], i = 0; i < bytes.length; i++) {
hex.push((bytes[i] >>> 4).toString(16));
hex.push((bytes[i] & 0xF).toString(16));
}
return hex.join('');
},
// Convert a hex string to a byte array
hexToBytes: function(hex) {
for (var bytes = [], c = 0; c < hex.length; c += 2)
bytes.push(parseInt(hex.substr(c, 2), 16));
return bytes;
},
// Convert a byte array to a base-64 string
bytesToBase64: function(bytes) {
for (var base64 = [], i = 0; i < bytes.length; i += 3) {
var triplet = (bytes[i] << 16) | (bytes[i + 1] << 8) | bytes[i + 2];
for (var j = 0; j < 4; j++)
if (i * 8 + j * 6 <= bytes.length * 8)
base64.push(base64map.charAt((triplet >>> 6 * (3 - j)) & 0x3F));
else
base64.push('=');
}
return base64.join('');
},
// Convert a base-64 string to a byte array
base64ToBytes: function(base64) {
// Remove non-base-64 characters
base64 = base64.replace(/[^A-Z0-9+\/]/ig, '');
for (var bytes = [], i = 0, imod4 = 0; i < base64.length;
imod4 = ++i % 4) {
if (imod4 == 0) continue;
bytes.push(((base64map.indexOf(base64.charAt(i - 1))
& (Math.pow(2, -2 * imod4 + 8) - 1)) << (imod4 * 2))
| (base64map.indexOf(base64.charAt(i)) >>> (6 - imod4 * 2)));
}
return bytes;
}
};
/*
http://www.npmjs.org/packages/charenc
*/
// UTF-8 encoding
var utf8 = {
// Convert a string to a byte array
stringToBytes: function(str) {
return bin.stringToBytes(unescape(encodeURIComponent(str)));
},
// Convert a byte array to a string
bytesToString: function(bytes) {
return decodeURIComponent(escape(bin.bytesToString(bytes)));
}
}
// Binary encoding
var bin = {
// Convert a string to a byte array
stringToBytes: function(str) {
for (var bytes = [], i = 0; i < str.length; i++)
bytes.push(str.charCodeAt(i) & 0xFF);
return bytes;
},
// Convert a byte array to a string
bytesToString: function(bytes) {
for (var str = [], i = 0; i < bytes.length; i++)
str.push(String.fromCharCode(bytes[i]));
return str.join('');
}
}
var md5;
/*
http://www.npmjs.org/packages/md5
*/
md5 = function (message, options) {
// Convert to byte array
if (message.constructor == String)
if (options && options.encoding === 'binary')
message = bin.stringToBytes(message);
else
message = utf8.stringToBytes(message);
else if (message.constructor === Buffer)
message = Array.prototype.slice.call(message, 0);
else if (!Array.isArray(message))
message = message.toString();
// else, assume byte array already
var m = crypt.bytesToWords(message),
l = message.length * 8,
a = 1732584193,
b = -271733879,
c = -1732584194,
d = 271733878;
// Swap endian
for (var i = 0; i < m.length; i++) {
m[i] = ((m[i] << 8) | (m[i] >>> 24)) & 0x00FF00FF |
((m[i] << 24) | (m[i] >>> 8)) & 0xFF00FF00;
}
// Padding
m[l >>> 5] |= 0x80 << (l % 32);
m[(((l + 64) >>> 9) << 4) + 14] = l;
// Method shortcuts
var FF = md5._ff,
GG = md5._gg,
HH = md5._hh,
II = md5._ii;
for (var i = 0; i < m.length; i += 16) {
var aa = a,
bb = b,
cc = c,
dd = d;
a = FF(a, b, c, d, m[i+ 0], 7, -680876936);
d = FF(d, a, b, c, m[i+ 1], 12, -389564586);
c = FF(c, d, a, b, m[i+ 2], 17, 606105819);
b = FF(b, c, d, a, m[i+ 3], 22, -1044525330);
a = FF(a, b, c, d, m[i+ 4], 7, -176418897);
d = FF(d, a, b, c, m[i+ 5], 12, 1200080426);
c = FF(c, d, a, b, m[i+ 6], 17, -1473231341);
b = FF(b, c, d, a, m[i+ 7], 22, -45705983);
a = FF(a, b, c, d, m[i+ 8], 7, 1770035416);
d = FF(d, a, b, c, m[i+ 9], 12, -1958414417);
c = FF(c, d, a, b, m[i+10], 17, -42063);
b = FF(b, c, d, a, m[i+11], 22, -1990404162);
a = FF(a, b, c, d, m[i+12], 7, 1804603682);
d = FF(d, a, b, c, m[i+13], 12, -40341101);
c = FF(c, d, a, b, m[i+14], 17, -1502002290);
b = FF(b, c, d, a, m[i+15], 22, 1236535329);
a = GG(a, b, c, d, m[i+ 1], 5, -165796510);
d = GG(d, a, b, c, m[i+ 6], 9, -1069501632);
c = GG(c, d, a, b, m[i+11], 14, 643717713);
b = GG(b, c, d, a, m[i+ 0], 20, -373897302);
a = GG(a, b, c, d, m[i+ 5], 5, -701558691);
d = GG(d, a, b, c, m[i+10], 9, 38016083);
c = GG(c, d, a, b, m[i+15], 14, -660478335);
b = GG(b, c, d, a, m[i+ 4], 20, -405537848);
a = GG(a, b, c, d, m[i+ 9], 5, 568446438);
d = GG(d, a, b, c, m[i+14], 9, -1019803690);
c = GG(c, d, a, b, m[i+ 3], 14, -187363961);
b = GG(b, c, d, a, m[i+ 8], 20, 1163531501);
a = GG(a, b, c, d, m[i+13], 5, -1444681467);
d = GG(d, a, b, c, m[i+ 2], 9, -51403784);
c = GG(c, d, a, b, m[i+ 7], 14, 1735328473);
b = GG(b, c, d, a, m[i+12], 20, -1926607734);
a = HH(a, b, c, d, m[i+ 5], 4, -378558);
d = HH(d, a, b, c, m[i+ 8], 11, -2022574463);
c = HH(c, d, a, b, m[i+11], 16, 1839030562);
b = HH(b, c, d, a, m[i+14], 23, -35309556);
a = HH(a, b, c, d, m[i+ 1], 4, -1530992060);
d = HH(d, a, b, c, m[i+ 4], 11, 1272893353);
c = HH(c, d, a, b, m[i+ 7], 16, -155497632);
b = HH(b, c, d, a, m[i+10], 23, -1094730640);
a = HH(a, b, c, d, m[i+13], 4, 681279174);
d = HH(d, a, b, c, m[i+ 0], 11, -358537222);
c = HH(c, d, a, b, m[i+ 3], 16, -722521979);
b = HH(b, c, d, a, m[i+ 6], 23, 76029189);
a = HH(a, b, c, d, m[i+ 9], 4, -640364487);
d = HH(d, a, b, c, m[i+12], 11, -421815835);
c = HH(c, d, a, b, m[i+15], 16, 530742520);
b = HH(b, c, d, a, m[i+ 2], 23, -995338651);
a = II(a, b, c, d, m[i+ 0], 6, -198630844);
d = II(d, a, b, c, m[i+ 7], 10, 1126891415);
c = II(c, d, a, b, m[i+14], 15, -1416354905);
b = II(b, c, d, a, m[i+ 5], 21, -57434055);
a = II(a, b, c, d, m[i+12], 6, 1700485571);
d = II(d, a, b, c, m[i+ 3], 10, -1894986606);
c = II(c, d, a, b, m[i+10], 15, -1051523);
b = II(b, c, d, a, m[i+ 1], 21, -2054922799);
a = II(a, b, c, d, m[i+ 8], 6, 1873313359);
d = II(d, a, b, c, m[i+15], 10, -30611744);
c = II(c, d, a, b, m[i+ 6], 15, -1560198380);
b = II(b, c, d, a, m[i+13], 21, 1309151649);
a = II(a, b, c, d, m[i+ 4], 6, -145523070);
d = II(d, a, b, c, m[i+11], 10, -1120210379);
c = II(c, d, a, b, m[i+ 2], 15, 718787259);
b = II(b, c, d, a, m[i+ 9], 21, -343485551);
a = (a + aa) >>> 0;
b = (b + bb) >>> 0;
c = (c + cc) >>> 0;
d = (d + dd) >>> 0;
}
return crypt.endian([a, b, c, d]);
};
// Auxiliary functions
md5._ff = function (a, b, c, d, x, s, t) {
var n = a + (b & c | ~b & d) + (x >>> 0) + t;
return ((n << s) | (n >>> (32 - s))) + b;
};
md5._gg = function (a, b, c, d, x, s, t) {
var n = a + (b & d | c & ~d) + (x >>> 0) + t;
return ((n << s) | (n >>> (32 - s))) + b;
};
md5._hh = function (a, b, c, d, x, s, t) {
var n = a + (b ^ c ^ d) + (x >>> 0) + t;
return ((n << s) | (n >>> (32 - s))) + b;
};
md5._ii = function (a, b, c, d, x, s, t) {
var n = a + (c ^ (b | ~d)) + (x >>> 0) + t;
return ((n << s) | (n >>> (32 - s))) + b;
};
// Package private blocksize
md5._blocksize = 16;
md5._digestsize = 16;
function md5$1 (message, options) {
if(typeof message == 'undefined')
return;
var digestbytes = crypt.wordsToBytes(md5(message, options));
return options && options.asBytes ? digestbytes :
options && options.asString ? bin.bytesToString(digestbytes) :
crypt.bytesToHex(digestbytes);
};
return md5$1;
}));