function md5cycle(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])}
function cmn(q,a,b,x,s,t){a=add32(add32(a,q),add32(x,t));return add32((a<<s)|(a>>>(32-s)),b)}
function ff(a,b,c,d,x,s,t){return cmn((b&c)|((~b)&d),a,b,x,s,t)}
function gg(a,b,c,d,x,s,t){return cmn((b&d)|(c&(~d)),a,b,x,s,t)}
function hh(a,b,c,d,x,s,t){return cmn(b^c^d,a,b,x,s,t)}
function ii(a,b,c,d,x,s,t){return cmn(c^(b|(~d)),a,b,x,s,t)}
function md51(s){txt='';var n=s.length,state=[1732584193,-271733879,-1732584194,271733878],i;for(i=64;i<=s.length;i+=64){md5cycle(state,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){md5cycle(state,tail);for(i=0;i<16;i++)tail[i]=0}
tail[14]=n*8;md5cycle(state,tail);return state}
function md5blk(s){var md5blks=[],i;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}
var hex_chr='0123456789abcdef'.split('');function rhex(n){var s='',j=0;for(;j<4;j++)
s+=hex_chr[(n>>(j*8+4))&0x0F]+hex_chr[(n>>(j*8))&0x0F];return s}
function hex(x){for(var i=0;i<x.length;i++)
x[i]=rhex(x[i]);return x.join('')}
function md5(s){return hex(md51(s))}
function add32(a,b){return(a+b)&0xFFFFFFFF}
if(md5('hello')!='5d41402abc4b2a76b9719d911017c592'){function add32(x,y){var lsw=(x&0xFFFF)+(y&0xFFFF),msw=(x>>16)+(y>>16)+(lsw>>16);return(msw<<16)|(lsw&0xFFFF)}}