Method and arrangement for authentication procedures in a communication network

摘要

The present invention is related to an authentication method and arrangements in a communication system including a Subscriber (50) with a terminal (51), an Operator Node (52) and a Service Provider Node (53), which authentication method is based on an SLA agreement between the Operator (OP) and the Service Provider (SP). The method includes that the Subscriber (50) with terminal (51) performs (5) strong authentication with the Operator Node (52) acting as Registration Authority OP(RA). After the strong authentication is performed by the Operator Node (52) a Mobile Strong Authentication Assertion MSAA is generated (6) and transmitted to the Service Provider Node (53) for validation. By this method the authentication is being delegated from the Service Provider to the Mobile Operator.