Security associations management (SAM) model for IP multimedia system (IMS)

In this paper we propose Security Associations Management (SAM) model which consists of seven security associations & managements based on different technical specifications of Third Generation Partnership Project (3GPP) [1] to develop Secure Service Provisioning Framework (SSPF) [2] for IP Multimedia System (IMS) at IMS Playground within Third Generation beyond (3Gb) Testbed [3] at Fokus, Fraunhofer. The objective of this enhanced security management model is to combine all security associations into single article that deal with the mutual authentication of user and network; to provide security across different interfaces like Ut interface (for HTTP services), Gm interface (air contact) between IMS client and IMS Core, Cx and Dx interfaces (between Home Subscriber Server HSS and IMS core network). It also deals with security when the user is roaming or in home network and security considerations for access networks. The main emphasis of SAM is to propose complete security protection model for IMS network and to the user, therefore only brief description of each security association is provided to understand the architecture and conceptual security model.