METHOD AND SYSTEM FOR AUTHENTICATING THE NODES OF A NETWORK

摘要

A system and a method are provided for authenticating the nodes of a communication network in order to access the services of a service provider, and includes a collective authentication of the nodes, performed in a single exchange between the nodes of the network declared in a group and an authentication server. Depending on the result of the authentication, the service provider is provided with cryptographic material in order to implement individualized controlled access to the resources or to the services offered for each node.

主权项

1. A method for authenticating a group of nodes from a plurality of nodes of a communication network, the method comprising the steps of:
identifying, out of the plurality of the nodes, a group of nodes to be authenticated; generating a challenge for the group of nodes; sending the challenge from an authentication server to a first node of the plurality of nodes; broadcasting the challenge from the first node to all of the nodes of the group of nodes according to a multicast routing tree; aggregating, at the first node according to a multicast routing tree that is the reverse of the multicast routing tree, the responses to the challenge from the nodes of the group; sending the aggregate of the responses to the authentication server; checking the aggregate of the responses; and generating a success message for the group of nodes if the collective check is successful.