Security Enhanced Authentication and Key Agreement Protocol for LTE/SAE Network

The 3rd Generation Partnership (3GPP) standard is developing System Architecture Evolution(SAE)/Long Term Evolution(LTE) architecture for the next generation mobile communication system. In the LTE/SAE architecture, EPS AKA(Evolved Packet System Authentication and Key Agreement) procedure is used to provide mutual authentication between the user and the network. However the EPS AKA has several vulnerabilities such as disclosure of user identity, man-in-middle attack, etc. Therefore, this paper analyzes the deficiencies of the EPS AKA, and proposes a Security Enhanced Authentication and Key agreement (SE-EPS AKA) based on Wireless Public Key Infrastructure (WPKI). Then, the new SE-EPS AKA has been proved with the formal verification method, and the proof result shows that the SE-EPS AKA can satisfy the security and efficiency properties in the LTE/SAE architecture.