AKA and Authorization Scheme for 4G Mobile Networks Based on Trusted Mobile Platform

Future 4G mobile communication networks are expected to provide all IP-based services for heterogeneous wireless access technologies. Security service for mobile user as a major challenge in developing such 4G networks becomes more complicated to handle. Since the mobile equipment (ME) becomes ever more powerful but still remain open to possible attacks, the neglect of the security of ME in developing traditional security scheme for mobile networks will remain many risks in the coming 4G systems. In this paper we associate trusted computing (TC) with PKI to provide a considerable robust platform for user´s access to sensitive service and data in the scenario of 4G systems. Then over the trusted mobile platform (TMP) we present an hybrid AKA (authentication and key agreement) and authorization scheme, in which password is in combination with fingerprint as well as public key to achieve mutual authentication among user/ME/USIM (universal subscriber identity module) and that among user/AN (accessed network)/HE (home environment). Compared with other AKA for future mobile networks and 3G AKA, our scheme with well scalability and acceptable efficiency is more robust and secure to resist potential attacks on/from ME and attacks in heterogeneous network infrastructure