public function getPassword(UserEntity $user)
 {
     if ($user->getAuthentification() == UserModel::AUTHENTIFICATION_BY_PASSWORD) {
         $password = new PasswordEntity($user);
         return $password->getPassword();
     }
     return false;
 }
 public function getByUser(UserEntity $user)
 {
     $db = new Database();
     $result = $db->execute("SELECT * FROM passwords WHERE account = ?", array($user->getId()))->fetch();
     if ($result) {
         $password = new PasswordEntity();
         $password->setId($result['id']);
         $password->setUser($result['account']);
         $password->setPassword($result['password']);
         return $password;
     }
     return null;
 }