public function __construct($closure = 'md5', $characters = null, $flag = Cryptography::TYPE_COMBINATION)
{
if (is_null($characters)) {
$characters = Cryptography::getAllCharacters();
}
parent::__construct($characters, $flag);
$this->setClosure($closure);
}
/**
* Shortcut or `ROT13`
*
* @param $str
* @return mixed|string
*/
public static function rot13($str)
{
$_this = new self(Cryptography::getAllCharacters(), 13);
return $_this->crypt($str);
}