A Lightweight Secure SIP Model for End-to-End Communication

摘要

Session Initiation Protocol (SIP) is a signaling standard approved by IETF for real-time multimedia session establishment. Wide deployment brings much concern on SIP security. Current solutions for end-to-end signaling security either require user-side powerful performance support for heterogeneous security mechanisms, or assume that trust relationship is transitive and static. Yet no solution is suitable for weak terminals with inherent limitations. It is necessary to consider a reasonable combination of security could be provided by the weak terminals and that provided by the network servers. This paper presents a novel model, combining hop-by-hop and end-to-end security, that network servers help users to make end-to-end communication secure with lightweight load.