/**
* Generates a secure key for the provided user
* @param zibo\library\security\model\User $user The user to get the key of
* @return string The secure key for the provided user
*/
protected function getUserKey(User $user)
{
$key = $user->getUserId();
$key .= '-' . $user->getUserName();
$key .= '-' . $user->getUserEmail();
return md5($key);
}
