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// https://github.com/jbt/js-crypto
md5 = function(sixteen){
var k = [],i=0;
for(;i<64;){
k[i] = 0|(Math.abs(Math.sin(++i)) * 4294967296);
}
function add(x, y){
return (((x>>1)+(y>>1))<<1)+(x&1)+(y&1) ;
//var msw = (x >> sixteen) + (y >> sixteen) + ((y=(x & ffff) + (y & ffff)) >> sixteen);
//return (msw << sixteen) | (y & ffff);
}
var calcMD5 = function(str){
var b,c,d,j,
x = [],
str2 = unescape(encodeURI(str)),
a = str2.length,
h = [b=1732584193,c=-271733879,~b,~c],
i=0;
for(;i<=a;) x[i >> 2] |= (str2.charCodeAt(i)||128) << 8*(i++ % 4);
x[str=(a+8 >> 6)*sixteen+14] = a * 8;
i = 0;
for(; i < str; i += sixteen){
a = h,j=0;
for(;j<64;){
a = [
d = a[3],
add(
b = a[1] ,
(d = add(
add(
a[0],
[
b&(c=a[2]) | ~b&d,
d&b | ~d&c,
b^c^d,
c^(b|~d)
][a=j>>4]
),
add(
k[j],
x[[
j,
5*j+1,
3*j+5,
7*j
][a]%sixteen+i]
)
)) << (a =[
7, 12, 17, 22,
5, 9, 14, 20,
4, 11, sixteen, 23,
6, 10, 15, 21
][4*a+j++%4]) | d >>> 32-a
),
b,
c
];
}
for(j=4;j;) h[--j] = add(h[j], a[j]);
}
str = '';
for(;j<32;) str += ((h[j>>3] >> ((1^j++&7)*4)) & 15).toString(sixteen);
return str;
};
return calcMD5;
}(16);
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