_config['hash_method']) { case '' : return $str; case 'md5': return md5($str); default: return hash_hmac($this->_config['hash_method'], $str, $this->_config['hash_key']); } } // Override Kohana logged_in() - if we can get the user, we are logged in. public function logged_in($role = NULL, $all_required = TRUE) { return FALSE !== $this->get_user(); } } ?>