An identity-based security mechanism for P2P VoIP

According to P2P VoIP signaling protocol security and its distributed features, an authenticated key agreement scheme is proposed by using identity-based cryptography, security, efficiency and key escrow problems are analyzed. According to P2P VoIP media stream security, a secure media stream scheme is proposed and the application problems are discussed. Authentication and privacy are provided for P2P VoIP, security standard-setting is promoted for P2PSIP, while the disadvantages of Public Key Infrastructure are overcome.