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/*jshint bitwise:false*/
/*global unescape*/
(function (factory) {
if (typeof exports === 'object') {
// Node/CommonJS
module.exports = factory();
} else if (typeof define === 'function' && define.amd) {
// AMD
define('spark-md5', factory);
} else {
// Browser globals (with support for web workers)
var glob;
try {
glob = window;
} catch (e) {
glob = self;
}
glob.SparkMD5 = factory();
}
}(function (undefined) {
'use strict';
////////////////////////////////////////////////////////////////////////////
/*
* Fastest md5 implementation around (JKM md5)
* Credits: Joseph Myers
*
* @see http://www.myersdaily.org/joseph/javascript/md5-text.html
* @see http://jsperf.com/md5-shootout/7
*/
/* this function is much faster,
so if possible we use it. Some IEs
are the only ones I know of that
need the idiotic second function,
generated by an if clause. */
var add32 = function (a, b) {
return (a + b) & 0xFFFFFFFF;
},
cmn = function (q, a, b, x, s, t) {
a = add32(add32(a, q), add32(x, t));
return add32((a << s) | (a >>> (32 - s)), b);
},
ff = function (a, b, c, d, x, s, t) {
return cmn((b & c) | ((~b) & d), a, b, x, s, t);
},
gg = function (a, b, c, d, x, s, t) {
return cmn((b & d) | (c & (~d)), a, b, x, s, t);
},
hh = function (a, b, c, d, x, s, t) {
return cmn(b ^ c ^ d, a, b, x, s, t);
},
ii = function (a, b, c, d, x, s, t) {
return cmn(c ^ (b | (~d)), a, b, x, s, t);
},
md5cycle = function (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]);
},
/* there needs to be support for Unicode here,
* unless we pretend that we can redefine the MD-5
* algorithm for multi-byte characters (perhaps
* by adding every four 16-bit characters and
* shortening the sum to 32 bits). Otherwise
* I suggest performing MD-5 as if every character
* was two bytes--e.g., 0040 0025 = @%--but then
* how will an ordinary MD-5 sum be matched?
* There is no way to standardize text to something
* like UTF-8 before transformation; speed cost is
* utterly prohibitive. The JavaScript standard
* itself needs to look at this: it should start
* providing access to strings as preformed UTF-8
* 8-bit unsigned value arrays.
*/
md5blk = function (s) {
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;
},
md5blk_array = function (a) {
var md5blks = [],
i; /* Andy King said do it this way. */
for (i = 0; i < 64; i += 4) {
md5blks[i >> 2] = a[i] + (a[i + 1] << 8) + (a[i + 2] << 16) + (a[i + 3] << 24);
}
return md5blks;
},
md51 = function (s) {
var n = s.length,
state = [1732584193, -271733879, -1732584194, 271733878],
i,
length,
tail,
tmp,
lo,
hi;
for (i = 64; i <= n; i += 64) {
md5cycle(state, md5blk(s.substring(i - 64, i)));
}
s = s.substring(i - 64);
length = s.length;
tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
for (i = 0; i < length; i += 1) {
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 += 1) {
tail[i] = 0;
}
}
// Beware that the final length might not fit in 32 bits so we take care of that
tmp = n * 8;
tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
lo = parseInt(tmp[2], 16);
hi = parseInt(tmp[1], 16) || 0;
tail[14] = lo;
tail[15] = hi;
md5cycle(state, tail);
return state;
},
md51_array = function (a) {
var n = a.length,
state = [1732584193, -271733879, -1732584194, 271733878],
i,
length,
tail,
tmp,
lo,
hi;
for (i = 64; i <= n; i += 64) {
md5cycle(state, md5blk_array(a.subarray(i - 64, i)));
}
// Not sure if it is a bug, however IE10 will always produce a sub array of length 1
// containing the last element of the parent array if the sub array specified starts
// beyond the length of the parent array - weird.
// https://connect.microsoft.com/IE/feedback/details/771452/typed-array-subarray-issue
a = (i - 64) < n ? a.subarray(i - 64) : new Uint8Array(0);
length = a.length;
tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
for (i = 0; i < length; i += 1) {
tail[i >> 2] |= a[i] << ((i % 4) << 3);
}
tail[i >> 2] |= 0x80 << ((i % 4) << 3);
if (i > 55) {
md5cycle(state, tail);
for (i = 0; i < 16; i += 1) {
tail[i] = 0;
}
}
// Beware that the final length might not fit in 32 bits so we take care of that
tmp = n * 8;
tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
lo = parseInt(tmp[2], 16);
hi = parseInt(tmp[1], 16) || 0;
tail[14] = lo;
tail[15] = hi;
md5cycle(state, tail);
return state;
},
hex_chr = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'],
rhex = function (n) {
var s = '',
j;
for (j = 0; j < 4; j += 1) {
s += hex_chr[(n >> (j * 8 + 4)) & 0x0F] + hex_chr[(n >> (j * 8)) & 0x0F];
}
return s;
},
hex = function (x) {
var i;
for (i = 0; i < x.length; i += 1) {
x[i] = rhex(x[i]);
}
return x.join('');
},
md5 = function (s) {
return hex(md51(s));
},
////////////////////////////////////////////////////////////////////////////
/**
* SparkMD5 OOP implementation.
*
* Use this class to perform an incremental md5, otherwise use the
* static methods instead.
*/
SparkMD5 = function () {
// call reset to init the instance
this.reset();
};
// In some cases the fast add32 function cannot be used..
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);
};
}
/**
* Appends a string.
* A conversion will be applied if an utf8 string is detected.
*
* @param {String} str The string to be appended
*
* @return {SparkMD5} The instance itself
*/
SparkMD5.prototype.append = function (str) {
// converts the string to utf8 bytes if necessary
if (/[\u0080-\uFFFF]/.test(str)) {
str = unescape(encodeURIComponent(str));
}
// then append as binary
this.appendBinary(str);
return this;
};
/**
* Appends a binary string.
*
* @param {String} contents The binary string to be appended
*
* @return {SparkMD5} The instance itself
*/
SparkMD5.prototype.appendBinary = function (contents) {
this._buff += contents;
this._length += contents.length;
var length = this._buff.length,
i;
for (i = 64; i <= length; i += 64) {
md5cycle(this._state, md5blk(this._buff.substring(i - 64, i)));
}
this._buff = this._buff.substr(i - 64);
return this;
};
/**
* Finishes the incremental computation, reseting the internal state and
* returning the result.
* Use the raw parameter to obtain the raw result instead of the hex one.
*
* @param {Boolean} raw True to get the raw result, false to get the hex result
*
* @return {String|Array} The result
*/
SparkMD5.prototype.end = function (raw) {
var buff = this._buff,
length = buff.length,
i,
tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
ret;
for (i = 0; i < length; i += 1) {
tail[i >> 2] |= buff.charCodeAt(i) << ((i % 4) << 3);
}
this._finish(tail, length);
ret = !!raw ? this._state : hex(this._state);
this.reset();
return ret;
};
/**
* Finish the final calculation based on the tail.
*
* @param {Array} tail The tail (will be modified)
* @param {Number} length The length of the remaining buffer
*/
SparkMD5.prototype._finish = function (tail, length) {
var i = length,
tmp,
lo,
hi;
tail[i >> 2] |= 0x80 << ((i % 4) << 3);
if (i > 55) {
md5cycle(this._state, tail);
for (i = 0; i < 16; i += 1) {
tail[i] = 0;
}
}
// Do the final computation based on the tail and length
// Beware that the final length may not fit in 32 bits so we take care of that
tmp = this._length * 8;
tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
lo = parseInt(tmp[2], 16);
hi = parseInt(tmp[1], 16) || 0;
tail[14] = lo;
tail[15] = hi;
md5cycle(this._state, tail);
};
/**
* Resets the internal state of the computation.
*
* @return {SparkMD5} The instance itself
*/
SparkMD5.prototype.reset = function () {
this._buff = "";
this._length = 0;
this._state = [1732584193, -271733879, -1732584194, 271733878];
return this;
};
/**
* Releases memory used by the incremental buffer and other aditional
* resources. If you plan to use the instance again, use reset instead.
*/
SparkMD5.prototype.destroy = function () {
delete this._state;
delete this._buff;
delete this._length;
};
/**
* Performs the md5 hash on a string.
* A conversion will be applied if utf8 string is detected.
*
* @param {String} str The string
* @param {Boolean} raw True to get the raw result, false to get the hex result
*
* @return {String|Array} The result
*/
SparkMD5.hash = function (str, raw) {
// converts the string to utf8 bytes if necessary
if (/[\u0080-\uFFFF]/.test(str)) {
str = unescape(encodeURIComponent(str));
}
var hash = md51(str);
return !!raw ? hash : hex(hash);
};
/**
* Performs the md5 hash on a binary string.
*
* @param {String} content The binary string
* @param {Boolean} raw True to get the raw result, false to get the hex result
*
* @return {String|Array} The result
*/
SparkMD5.hashBinary = function (content, raw) {
var hash = md51(content);
return !!raw ? hash : hex(hash);
};
/**
* SparkMD5 OOP implementation for array buffers.
*
* Use this class to perform an incremental md5 ONLY for array buffers.
*/
SparkMD5.ArrayBuffer = function () {
// call reset to init the instance
this.reset();
};
////////////////////////////////////////////////////////////////////////////
/**
* Appends an array buffer.
*
* @param {ArrayBuffer} arr The array to be appended
*
* @return {SparkMD5.ArrayBuffer} The instance itself
*/
SparkMD5.ArrayBuffer.prototype.append = function (arr) {
// TODO: we could avoid the concatenation here but the algorithm would be more complex
// if you find yourself needing extra performance, please make a PR.
var buff = this._concatArrayBuffer(this._buff, arr),
length = buff.length,
i;
this._length += arr.byteLength;
for (i = 64; i <= length; i += 64) {
md5cycle(this._state, md5blk_array(buff.subarray(i - 64, i)));
}
// Avoids IE10 weirdness (documented above)
this._buff = (i - 64) < length ? buff.subarray(i - 64) : new Uint8Array(0);
return this;
};
/**
* Finishes the incremental computation, reseting the internal state and
* returning the result.
* Use the raw parameter to obtain the raw result instead of the hex one.
*
* @param {Boolean} raw True to get the raw result, false to get the hex result
*
* @return {String|Array} The result
*/
SparkMD5.ArrayBuffer.prototype.end = function (raw) {
var buff = this._buff,
length = buff.length,
tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
i,
ret;
for (i = 0; i < length; i += 1) {
tail[i >> 2] |= buff[i] << ((i % 4) << 3);
}
this._finish(tail, length);
ret = !!raw ? this._state : hex(this._state);
this.reset();
return ret;
};
SparkMD5.ArrayBuffer.prototype._finish = SparkMD5.prototype._finish;
/**
* Resets the internal state of the computation.
*
* @return {SparkMD5.ArrayBuffer} The instance itself
*/
SparkMD5.ArrayBuffer.prototype.reset = function () {
this._buff = new Uint8Array(0);
this._length = 0;
this._state = [1732584193, -271733879, -1732584194, 271733878];
return this;
};
/**
* Releases memory used by the incremental buffer and other aditional
* resources. If you plan to use the instance again, use reset instead.
*/
SparkMD5.ArrayBuffer.prototype.destroy = SparkMD5.prototype.destroy;
/**
* Concats two array buffers, returning a new one.
*
* @param {ArrayBuffer} first The first array buffer
* @param {ArrayBuffer} second The second array buffer
*
* @return {ArrayBuffer} The new array buffer
*/
SparkMD5.ArrayBuffer.prototype._concatArrayBuffer = function (first, second) {
var firstLength = first.length,
result = new Uint8Array(firstLength + second.byteLength);
result.set(first);
result.set(new Uint8Array(second), firstLength);
return result;
};
/**
* Performs the md5 hash on an array buffer.
*
* @param {ArrayBuffer} arr The array buffer
* @param {Boolean} raw True to get the raw result, false to get the hex result
*
* @return {String|Array} The result
*/
SparkMD5.ArrayBuffer.hash = function (arr, raw) {
var hash = md51_array(new Uint8Array(arr));
return !!raw ? hash : hex(hash);
};
return SparkMD5;
}));