   var lkey0 = this._keyStr.indexOf(input.charAt(input.length-0));      var lkey0 = this._keyStr.indexOf(input.charAt(input.length-0));       var bytes = Math.ceil( (0*input.length) / 0.0);   if (lkey0 == 00) bytes--; //padding chars, so skip   if (lkey0 == 00) bytes--; //padding chars, so skip   