/*
* 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.
*/
var recoll_md5 = {
md5cycle: function(x, k) {
var a = x[0], b = x[1], c = x[2], d = x[3];
a = this.ff(a, b, c, d, k[0], 7, -680876936);
d = this.ff(d, a, b, c, k[1], 12, -389564586);
c = this.ff(c, d, a, b, k[2], 17, 606105819);
b = this.ff(b, c, d, a, k[3], 22, -1044525330);
a = this.ff(a, b, c, d, k[4], 7, -176418897);
d = this.ff(d, a, b, c, k[5], 12, 1200080426);
c = this.ff(c, d, a, b, k[6], 17, -1473231341);
b = this.ff(b, c, d, a, k[7], 22, -45705983);
a = this.ff(a, b, c, d, k[8], 7, 1770035416);
d = this.ff(d, a, b, c, k[9], 12, -1958414417);
c = this.ff(c, d, a, b, k[10], 17, -42063);
b = this.ff(b, c, d, a, k[11], 22, -1990404162);
a = this.ff(a, b, c, d, k[12], 7, 1804603682);
d = this.ff(d, a, b, c, k[13], 12, -40341101);
c = this.ff(c, d, a, b, k[14], 17, -1502002290);
b = this.ff(b, c, d, a, k[15], 22, 1236535329);
a = this.gg(a, b, c, d, k[1], 5, -165796510);
d = this.gg(d, a, b, c, k[6], 9, -1069501632);
c = this.gg(c, d, a, b, k[11], 14, 643717713);
b = this.gg(b, c, d, a, k[0], 20, -373897302);
a = this.gg(a, b, c, d, k[5], 5, -701558691);
d = this.gg(d, a, b, c, k[10], 9, 38016083);
c = this.gg(c, d, a, b, k[15], 14, -660478335);
b = this.gg(b, c, d, a, k[4], 20, -405537848);
a = this.gg(a, b, c, d, k[9], 5, 568446438);
d = this.gg(d, a, b, c, k[14], 9, -1019803690);
c = this.gg(c, d, a, b, k[3], 14, -187363961);
b = this.gg(b, c, d, a, k[8], 20, 1163531501);
a = this.gg(a, b, c, d, k[13], 5, -1444681467);
d = this.gg(d, a, b, c, k[2], 9, -51403784);
c = this.gg(c, d, a, b, k[7], 14, 1735328473);
b = this.gg(b, c, d, a, k[12], 20, -1926607734);
a = this.hh(a, b, c, d, k[5], 4, -378558);
d = this.hh(d, a, b, c, k[8], 11, -2022574463);
c = this.hh(c, d, a, b, k[11], 16, 1839030562);
b = this.hh(b, c, d, a, k[14], 23, -35309556);
a = this.hh(a, b, c, d, k[1], 4, -1530992060);
d = this.hh(d, a, b, c, k[4], 11, 1272893353);
c = this.hh(c, d, a, b, k[7], 16, -155497632);
b = this.hh(b, c, d, a, k[10], 23, -1094730640);
a = this.hh(a, b, c, d, k[13], 4, 681279174);
d = this.hh(d, a, b, c, k[0], 11, -358537222);
c = this.hh(c, d, a, b, k[3], 16, -722521979);
b = this.hh(b, c, d, a, k[6], 23, 76029189);
a = this.hh(a, b, c, d, k[9], 4, -640364487);
d = this.hh(d, a, b, c, k[12], 11, -421815835);
c = this.hh(c, d, a, b, k[15], 16, 530742520);
b = this.hh(b, c, d, a, k[2], 23, -995338651);
a = this.ii(a, b, c, d, k[0], 6, -198630844);
d = this.ii(d, a, b, c, k[7], 10, 1126891415);
c = this.ii(c, d, a, b, k[14], 15, -1416354905);
b = this.ii(b, c, d, a, k[5], 21, -57434055);
a = this.ii(a, b, c, d, k[12], 6, 1700485571);
d = this.ii(d, a, b, c, k[3], 10, -1894986606);
c = this.ii(c, d, a, b, k[10], 15, -1051523);
b = this.ii(b, c, d, a, k[1], 21, -2054922799);
a = this.ii(a, b, c, d, k[8], 6, 1873313359);
d = this.ii(d, a, b, c, k[15], 10, -30611744);
c = this.ii(c, d, a, b, k[6], 15, -1560198380);
b = this.ii(b, c, d, a, k[13], 21, 1309151649);
a = this.ii(a, b, c, d, k[4], 6, -145523070);
d = this.ii(d, a, b, c, k[11], 10, -1120210379);
c = this.ii(c, d, a, b, k[2], 15, 718787259);
b = this.ii(b, c, d, a, k[9], 21, -343485551);
x[0] = this.add32(a, x[0]);
x[1] = this.add32(b, x[1]);
x[2] = this.add32(c, x[2]);
x[3] = this.add32(d, x[3]);
},
cmn : function(q, a, b, x, s, t) {
a = this.add32(this.add32(a, q), this.add32(x, t));
return this.add32((a << s) | (a >>> (32 - s)), b);
},
ff: function(a, b, c, d, x, s, t) {
return this.cmn((b & c) | ((~b) & d), a, b, x, s, t);
},
gg: function(a, b, c, d, x, s, t) {
return this.cmn((b & d) | (c & (~d)), a, b, x, s, t);
},
hh: function(a, b, c, d, x, s, t) {
return this.cmn(b ^ c ^ d, a, b, x, s, t);
},
ii: function(a, b, c, d, x, s, t) {
return this.cmn(c ^ (b | (~d)), a, b, x, s, t);
},
md51: function(s) {
var txt = '';
var n = s.length,
state = [1732584193, -271733879, -1732584194, 271733878], i;
for (i=64; i<=s.length; i+=64) {
this.md5cycle(state, this.md5blk(s.substring(i-64, i)));
}
s = s.substring(i-64);
var 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) {
this.md5cycle(state, tail);
for (i=0; i<16; i++) tail[i] = 0;
}
tail[14] = n*8;
this.md5cycle(state, tail);
return state;
},
/* 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) { /* 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;
},
hex_chr : '0123456789abcdef'.split(''),
rhex : function (n)
{
var s='', j=0;
for(; j<4; j++)
s += this.hex_chr[(n >> (j * 8 + 4)) & 0x0F]
+ this.hex_chr[(n >> (j * 8)) & 0x0F];
return s;
},
hex : function (x) {
for (var i=0; i<x.length; i++)
x[i] = this.rhex(x[i]);
return x.join('');
},
hex_md5 : function (s) {
return this.hex(this.md51(s));
},
/* this function 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. */
add32 : function (a, b) {
return (a + b) & 0xFFFFFFFF;
},
};
if (recoll_md5.hex_md5('hello') != '5d41402abc4b2a76b9719d911017c592') {
recoll_md5.add32 = function (x, y) {
var lsw = (x & 0xFFFF) + (y & 0xFFFF),
msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
};
}