function long2str(v,w){var vl=v.length;var sl=v[vl-1]&0xffffffff;for(var i=0;i<vl;i++)
{v[i]=String.fromCharCode(v[i]&0xff,v[i]>>>8&0xff,v[i]>>>16&0xff,v[i]>>>24&0xff);}
if(w){return v.join('').substring(0,sl);}
else{return v.join('');}}
function str2long(s,w){var len=s.length;var v=[];for(var i=0;i<len;i+=4)
{v[i>>2]=s.charCodeAt(i)|s.charCodeAt(i+1)<<8|s.charCodeAt(i+2)<<16|s.charCodeAt(i+3)<<24;}
if(w){v[v.length]=len;}
return v;}
function xxtea_encrypt(str,key){if(str==""){return"";}
var v=str2long(str,true);var k=str2long(key,false);var n=v.length;var z=v[n-1],y=v[0],delta=0x9E3779B9;var mx,e,q=Math.floor(6+52/n),sum=0;while(q-->0){sum=sum+delta&0xffffffff;e=sum>>>2&3;for(var p=0;p<n-1;p++){y=v[p+1];mx=(z>>>5^y<<2)+(y>>>3^z<<4)^(sum^y)+(k[p&3^e]^z);z=v[p]=v[p]+mx&0xffffffff;}
y=v[0];mx=(z>>>5^y<<2)+(y>>>3^z<<4)^(sum^y)+(k[p&3^e]^z);z=v[n-1]=v[n-1]+mx&0xffffffff;}
return long2str(v,false);}
function xxtea_decrypt(str,key){if(str==""){return"";}
var v=str2long(str,false);var k=str2long(key,false);var n=v.length;var z=v[n-1],y=v[0],delta=0x9E3779B9;var mx,e,q=Math.floor(6+52/n),sum=q*delta&0xffffffff;while(sum!=0){e=sum>>>2&3;for(var p=n-1;p>0;p--){z=v[p-1];mx=(z>>>5^y<<2)+(y>>>3^z<<4)^(sum^y)+(k[p&3^e]^z);y=v[p]=v[p]-mx&0xffffffff;}
z=v[n-1];mx=(z>>>5^y<<2)+(y>>>3^z<<4)^(sum^y)+(k[p&3^e]^z);y=v[0]=v[0]-mx&0xffffffff;sum=sum-delta&0xffffffff;}
return long2str(v,true);}
