A method and apparatus for securing the interface between a Universal Integrated Circuit Card (UICC) and a Terminal in wireless communications is disclosed. The security of Authentication and Key Agreement (AKA) and application level generic bootstrapping architecture (GBA) with UICC-based enhancements (GBA_U) procedures is improved. A secure shared session key is used to encrypt communications between the UICC and the Terminal. The secure shared session key generated using authenticating or non-authenticating procedures.
