function Arcfour(){this.i=0;this.j=0;this.S=new Array()}function ARC4init(d){var c,a,b;for(c=0;c<256;++c){this.S[c]=c}a=0;for(c=0;c<256;++c){a=(a+this.S[c]+d[c%d.length])&255;b=this.S[c];this.S[c]=this.S[a];this.S[a]=b}this.i=0;this.j=0}function ARC4next(){var a;this.i=(this.i+1)&255;this.j=(this.j+this.S[this.i])&255;a=this.S[this.i];this.S[this.i]=this.S[this.j];this.S[this.j]=a;return this.S[(a+this.S[this.i])&255]}Arcfour.prototype.init=ARC4init;Arcfour.prototype.next=ARC4next;function prng_newstate(){return new Arcfour()}var rng_psize=256; |