Method and system for key distribution and authentication in...

H - Electricity – 04 – L

Patent

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H04L 9/08 (2006.01) H04L 9/32 (2006.01) H04L 12/22 (2006.01)

Patent

CA 2130396

This invention deals with a safe key distribution and authentication in a data communication network (e.g. wireless LAN type of network). The network includes a network manager to which are connected, via a LAN wired circuit, one or more base stations. Individual remote stations are, in turn, wirelessly connected to an installed base station. One essential function for achieving security in such a network, is a mechanism to reliably authenticate the exchanges of data between communicating parties. This involves the establishment of session keys, which keys need to be distributed safely to the network components. An original and safe method is provided with this invention for key distribution and authentication during network installation, said method including using the first installed base station for generating a network key and a backbone key, and then using said first installed base station for subsequent remote station or additional base station installations while avoiding communicating said network key.

Distribution de clés et authentification de sécurité dans un réseau de transmission de données (p. ex. réseau local sans fils). Le réseau comprend un gestionnaire de réseau auquel sont connectées une ou plusieurs stations de base par l'intermédiaire d'un circuit câblé de réseau local. Des stations de base isolées sont reliées sans fil à une station de base installée. Dans un tel réseau, un mécanisme d'authentification fiable des échanges de données entre les parties communicantes est essentiel à la sécurité. € cette fin sont établies des clés de session, qui doivent être distribuées en toute sécurité aux composantes du réseau. La présente invention offre une méthode originale et sécuritaire de distribution de clés et d'authentification lors de l'installation du réseau. Cette méthode comprend l'utilisation de la première station de base installée pour la production d'une clé de réseau et d'une clé de réseau principal, puis pour l'installation des autres stations isolées ou de base tout en évitant de communiquer ladite clé de réseau.

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