Method and apparatus for establishing a security association

Details Method and apparatus for establishing a security association Method and apparatus for establishing a security association

H - Electricity

04

L

H04L 29/08 (2006.01) H04L 12/56 (2006.01) H04L 29/06 (2006.01)

Patent

CA 2624591

A method for establishing a security association between a client (UE) and a service node (NAF) for the purpose of pushing information from the service node to the client, where the client and a key server (BSF) share a base secret. The method comprises sending a request for generation and provision of a service key from the service node to a key server, the request identifying the client and the service node, generating a service key at the key server using the identities of the client and the service node, the base secret, and additional information, and sending the service key to the service node together with said additional information, forwarding said additional information from the service node to the client, and at the client, generating said service key using the received additional information and the base key. A similar approach may be used to provide p2p key management.

L'invention porte sur un procédé et sur un appareil permettant d'établir une association de sécurité entre un client et un noeud de service dans le but de pousser des informations du noeud de service vers le client, le client et un serveur clé partageant un secret de base. Le procédé consiste à envoyer une demande de génération et de fourniture d'une clé de service du noeud de service à un serveur clé; dans le procédé selon l'invention, la demande identifie le client et le noeud de service, génère une clé de service au niveau du serveur clé en utilisant les identités du client et du noeud de service, le secret de base et les informations additionnelles et envoie la clé de service au noeud de service avec lesdites informations additionnelles, transmet lesdites informations additionnelles du noeud de service au client, et au niveau de client, génère ladite clé de service en utilisant lesdites informations additionnelles reçues et la clé de base. Il est possible d'avoir recours au même type d'approche pour fournir une gestion de clé p2p.

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