A Mechanism of Authentication for P2P-SIP Overlays

This paper proposes a new authentication mechanism to meet the demand of security for P2P-SIP network. Based on an improved certificateless signature, it achieves mutual authentication through signal interaction between end to end users. From the analysis, this scheme has high performance for defending fabricating identity, tampering and counterfeiting message. It is efficient to hold back replay attack, man in the middle attack and unauthorized data access.