function encrypt(c,e){if(null==e||0>=e.length)return null;for(var a="",b=0;bd)return null;for(var f=Math.round(1E9*Math.random())%1E8,a=a+f;10g?l+("0"+g.toString(16)):l+g.toString(16),a=(d*a+k)%h;for(f=f.toString(16);8>f.length;)f="0"+f;return l+f}function decrypt(c,e){if(!(null==c||8>c.length||null==e||0>=e.length)){for(var a="",b=0;b