Fast re-authentication with dynamic credentials

H - Electricity – 04 – L

Patent

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Details

H04L 12/28 (2006.01) H04L 29/06 (2006.01)

Patent

CA 2517474

A proxy server that is inserted between a plurality of network access servers, typically an access points, and an authentication server. When an original authentication request is received by an network access server, the network access server forwards the request to the proxy server which forwards the request to an authentication server. The authentication server then sends the session information to the proxy server which stores the keying material as a dynamic credentials. When the client re-authenticates with one of the plurality of access servers, the re-authentication request is handled by the proxy server using the dynamic credentials. The proxy server may re- authenticate the client using a different method than the method that was originally used. For example, the original authentication may be by Extensible Authentication Protocol - Transport Layer Security (EAP-TLS) and subsequent re- authentications may use Wi-Fi Protected Access (WPA).

l'invention concerne un serveur proxy inséré entre une pluralité de serveurs d'accès réseau, en général des points d'accès et un serveur d'authentification. Lorsqu'une demande d'authentification initiale est reçue par un serveur d'accès réseau, ledit serveur envoie la demande au serveur proxy qui envoie lui-même cette demande à un serveur d'authentification. Le serveur d'authentification envoie ensuite des informations de session au serveur proxy qui stocke le matériau de cryptage sous forme d'authentifiants dynamiques. Lorsqu'un client doit être ré-authentifié à l'aide de l'un des serveurs d'accès de la pluralité, la demande de ré-authentification est manipulée par le serveur proxy à l'aide des authentifiants dynamiques. Le serveur proxy permet de ré-authentifier le client à l'aide d'un procédé diffèrent de celui utilisé initialement. Par exemple, l'authentification initiale peut être peut être effectuée par le protocole d'authentification extensible protocole TSL (EAP-TLS) et les ré-authentifications ultérieures peuvent utiliser l'accès protégé Wi-Fi (WPA).

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