methods for authenticating a communication device, participating in authenticating a communication device, and being authenticated by a first network node, computer program, computer program product, first and second network nodes, and communication device .

摘要

A method and arrangements for enabling authentication of a communication device are suggested, wherein a network node capable of operating as an authentication server need not store all relevant state-related information for a round trip of a authentication session. Instead of storing all this information, at least part of it is provided to the authenticator or the communication unit for later retrieval in a subsequent response. Based on the state-related information provided in the response, the network node is capable of reproducing a state associated with a respective round trip. By repeating said process for a required number of round trips, an authentication session may be performed, wherein less state-related information needs to be stored on said network node.