/*
* 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.
*/

var md5={
hexcase:0,
b64pad:"",

hex_md5:function(s)    { return this.rstr2hex(this.rstr_md5(this.str2rstr_utf8(s))); },
b64_md5:function(s)    { return this.rstr2b64(this.rstr_md5(this.str2rstr_utf8(s))); },
any_md5:function(s, e) { return this.rstr2any(this.rstr_md5(this.str2rstr_utf8(s)), e); },
hex_hmac_md5:function(k, d)
{ return this.rstr2hex(this.rstr_hmac_md5(this.str2rstr_utf8(k), this.str2rstr_utf8(d))); },
b64_hmac_md5:function(k, d)
{ return this.rstr2b64(this.rstr_hmac_md5(this.str2rstr_utf8(k), this.str2rstr_utf8(d))); },

rstr_md5:function(s)
{
return this.binl2rstr(this.binl_md5(this.rstr2binl(s), s.length * 8));
},

rstr_hmac_md5:function(key, data)
{
var bkey = this.rstr2binl(key);
if(bkey.length > 16) bkey = this.binl_md5(bkey, key.lengthbit_rol * 8);

var ipad = Array(16), opad = Array(16);
for(var i = 0; i < 16; i++)
{
	ipad[i] = bkey[i] ^ 0x36363636;
	opad[i] = bkey[i] ^ 0x5C5C5C5C;
}

var hash = this.binl_md5(ipad.concat(this.rstr2binl(data)), 512 + data.length * 8);
return this.binl2rstr(this.binl_md5(opad.concat(hash), 512 + 128));
},


rstr2hex:function(input)
{
try { this.hexcase } catch(e) { this.hexcase=0; }
var hex_tab = this.hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var output = "";
var x;
for(var i = 0; i < input.length; i++)
{
	x = input.charCodeAt(i);
	output += hex_tab.charAt((x >>> 4) & 0x0F)
		+  hex_tab.charAt( x        & 0x0F);
}
return output;
},


rstr2b64:function(input)
{
try { this.b64pad } catch(e) { this.b64pad=''; }
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var output = "";
var len = input.length;
for(var i = 0; i < len; i += 3)
{
	var triplet = (input.charCodeAt(i) << 16)
				| (i + 1 < len ? input.charCodeAt(i+1) << 8 : 0)
				| (i + 2 < len ? input.charCodeAt(i+2)      : 0);
	for(var j = 0; j < 4; j++)
	{
	if(i * 8 + j * 6 > input.length * 8) output += this.b64pad;
	else output += tab.charAt((triplet >>> 6*(3-j)) & 0x3F);
	}
}
return output;
},



str2rstr_utf8:function(input)
{
var output = "";
var i = -1;
var x, y;

while(++i < input.length)
{
	x = input.charCodeAt(i);
	y = i + 1 < input.length ? input.charCodeAt(i + 1) : 0;
	if(0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF)
	{
	x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);
	i++;
	}

	/* Encode output as utf-8 */
	if(x <= 0x7F)
	output += String.fromCharCode(x);
	else if(x <= 0x7FF)
	output += String.fromCharCode(0xC0 | ((x >>> 6 ) & 0x1F),
									0x80 | ( x         & 0x3F));
	else if(x <= 0xFFFF)
	output += String.fromCharCode(0xE0 | ((x >>> 12) & 0x0F),
									0x80 | ((x >>> 6 ) & 0x3F),
									0x80 | ( x         & 0x3F));
	else if(x <= 0x1FFFFF)
	output += String.fromCharCode(0xF0 | ((x >>> 18) & 0x07),
									0x80 | ((x >>> 12) & 0x3F),
									0x80 | ((x >>> 6 ) & 0x3F),
									0x80 | ( x         & 0x3F));
}
return output;
},

rstr2binl:function(input)
{
var output = Array(input.length >> 2);
for(var i = 0; i < output.length; i++)
	output[i] = 0;
for(var i = 0; i < input.length * 8; i += 8)
	output[i>>5] |= (input.charCodeAt(i / 8) & 0xFF) << (i%32);
return output;
},

binl2rstr:function(input)
{
var output = "";
for(var i = 0; i < input.length * 32; i += 8)
	output += String.fromCharCode((input[i>>5] >>> (i % 32)) & 0xFF);
return output;
},

binl_md5:function(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 = this.md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
	d = this.md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
	c = this.md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);
	b = this.md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
	a = this.md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
	d = this.md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);
	c = this.md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
	b = this.md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
	a = this.md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
	d = this.md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
	c = this.md5_ff(c, d, a, b, x[i+10], 17, -42063);
	b = this.md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
	a = this.md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);
	d = this.md5_ff(d, a, b, c, x[i+13], 12, -40341101);
	c = this.md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
	b = this.md5_ff(b, c, d, a, x[i+15], 22,  1236535329);

	a = this.md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
	d = this.md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
	c = this.md5_gg(c, d, a, b, x[i+11], 14,  643717713);
	b = this.md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
	a = this.md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
	d = this.md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);
	c = this.md5_gg(c, d, a, b, x[i+15], 14, -660478335);
	b = this.md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
	a = this.md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
	d = this.md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
	c = this.md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
	b = this.md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);
	a = this.md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
	d = this.md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
	c = this.md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);
	b = this.md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

	a = this.md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
	d = this.md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
	c = this.md5_hh(c, d, a, b, x[i+11], 16,  1839030562);
	b = this.md5_hh(b, c, d, a, x[i+14], 23, -35309556);
	a = this.md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
	d = this.md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);
	c = this.md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
	b = this.md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
	a = this.md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);
	d = this.md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
	c = this.md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
	b = this.md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);
	a = this.md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
	d = this.md5_hh(d, a, b, c, x[i+12], 11, -421815835);
	c = this.md5_hh(c, d, a, b, x[i+15], 16,  530742520);
	b = this.md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);

	a = this.md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
	d = this.md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);
	c = this.md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
	b = this.md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
	a = this.md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);
	d = this.md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
	c = this.md5_ii(c, d, a, b, x[i+10], 15, -1051523);
	b = this.md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
	a = this.md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
	d = this.md5_ii(d, a, b, c, x[i+15], 10, -30611744);
	c = this.md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
	b = this.md5_ii(b, c, d, a, x[i+13], 21,  1309151649);
	a = this.md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
	d = this.md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
	c = this.md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);
	b = this.md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);

	a = this.safe_add(a, olda);
	b = this.safe_add(b, oldb);
	c = this.safe_add(c, oldc);
	d = this.safe_add(d, oldd);
}
return Array(a, b, c, d);
},


md5_cmn:function(q, a, b, x, s, t)
{return this.safe_add(this.bit_rol(this.safe_add(this.safe_add(a, q), this.safe_add(x, t)), s),b);},
md5_ff:function(a, b, c, d, x, s, t)
{return this.md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);},
md5_gg:function(a, b, c, d, x, s, t)
{return this.md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);},
md5_hh:function(a, b, c, d, x, s, t)
{return this.md5_cmn(b ^ c ^ d, a, b, x, s, t);},
md5_ii:function(a, b, c, d, x, s, t)
{return this.md5_cmn(c ^ (b | (~d)), a, b, x, s, t);},

safe_add:function(x, y)
{
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
},

bit_rol:function(num, cnt)
{return (num << cnt) | (num >>> (32 - cnt));},

};