On-demand serving network authentication

摘要

A method, an apparatus, and a computer program product for wireless communication are provided. A method includes transmitting a request to a serving network with a nonce and a signature request directed to a network function of the serving network, receiving a response to the request from the serving network, and authenticating the serving network based on the signature of the network function. The nonce may provide replay protection. The response may include a signature of the network function. The request sent to the serving network may include a radio resource control (RRC) message or a tracking area update (TAU) request. The serving network may be authenticated using a trusted third party to verify a certificate associated with the serving network.