Group Authentication Key-based Authentication and Key Agreement for Inter- network RoamingMaster's Thesis • July 17th, 2007
Contract Type FiledJuly 17th, 2007This thesis presents a Group Key-based Authentication and Key Agreement (GK-AKA) mechanism to reduce the number of authentication messages exchanged between a serving network (SN) and the home network (HN) of a mobile station (MS). Current Authentication and Key Agreement (AKA) protocols are designed for an SN to authen- ticate each individual MS in wireless environments. Therefore, when multiple MSs from the same network visit an SN, the SN needs to ask the HN of the MSs to authenti- cate each MS and return the MS’s authentication data individually. Each of these au- thentications will cause a number of authentication messages exchanged between the SN and HN of the MSs, and lengthen the handover latency, which may degrade the quality of real-time services.