Process for identity protection, devices, and produces corresponding computer program.

The invention relates to a method for authenticating a client terminal from an authentication server, said client terminal having a certificate authentification.Selon the invention, such a method comprises the steps of: - obtaining at least one encryption parameter by said client terminal; - encrypting said authentication certificate from said client terminal, from said at least one encryption parameter, outputting an encrypted authentication certificate; - said transmission of said encrypted authentication certificate server, - obtaining the at least one encryption parameter by said server, - decrypting said encrypted authentication certificate from said at least one encryption parameter; - authentication and grant an authentication assertion if authentication is positive.