US Patent 11665162 Method for authenticating a user with an authentication server

A method performs a strong authentication using a mobile terminal and the capability of the user, as proof of an identity. The mobile terminal allows an authentication to be established by communicating with a proxy authentication server and a notification server. These communications are initiated by an authentication server, used for the authentication. Throughout the authentication, the authentication server remains masked by the proxy authentication server. The only interface between the authentication server and the rest of the world is the proxy authentication server.