An Identity-based Mechanism for Enhancing SIP Security

摘要

Session Initiation Protocol is widely used for establishing VoIP calls in wireless packet networks. According to shortages of SIP and relevant security mechanisms, a secure identity-based mechanism was proposed in this paper. The scheme realizes point-topoint mutual authentication by employing identitybased signature, and achieves end-to-end identity authentication and key agreement between cross-domain user agents by message integrity checking and OiffleHellman mechanism. Compared to a trans-domain mechanism for SIP communication, our method has the advantage of more lightweight computation.