Method and apparatus for enhanced security in a broadband...

H - Electricity – 04 – L

Patent

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Details

H04L 29/06 (2006.01) H04L 12/64 (2006.01) H04M 7/00 (2006.01) H04M 3/20 (2006.01) H04M 7/12 (2006.01)

Patent

CA 2371811

The broadband telephony interface is provisioned by receiving information authenticating a provisioning server, establishing a communication channel between the user and the provisioning server over which is transmitted authorization information from the user to the provisioning server, and encrypting and transmitting a cryptographic key associated with the user to the provisioning server. The cryptographic key can be a symmetric key or a public key corresponding to a private key stored in the broadband telephony interface. The cryptographic key can be utilized to generate other keys which are utilized to secure communication channels for the telephony service. The broadband telephony interface advantageously can be implemented as untrusted hardware or software that is installed by a customer.

L'interface téléphonique large bande est alimentée par réception d'informations authentifiant un serveur d'alimentation, par établissement d'une voie de communication entre l'abonné et le serveur d'alimentation sur lequel les informations d'autorisation sont transmises de l'abonné vers ledit serveur, par cryptage et par transmission d'une clé cryptographique associée à l'abonné vers le serveur d'alimentation. La clé cryptographique peut être une clé symétrique ou une clé publique correspondant à une clé privée stockée dans l'interface téléphonique large bande. Cette clé cryptographique peut être utilisée pour produire d'autres clés servant à sécuriser les voies de communication pour le service téléphonique. L'interface téléphonique large bande peut avantageusement être mise en oeuvre sous forme d'un matériel ou d'un logiciel non sécurisé installé par l'abonné.

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