P2PSIP安全认证机制研究.pdf

Study on Security Authentication Mechanism for P2P-SIP Min Shen, Jing Cai, He Haipeng He College munications and Information Engineering,C hongqing University of Posts and munications,Chongqing 400065,China Email : shenmin@, cj1985119@, hehaipeng1985@ Abtract: Session Initiation Protocol (SIP) is an important protocol adopted by the 3rd Generation Partnership Project(3GPP) for the IP Multimedia Subsystem (IMS) an d pare with the traditional C/S model SIP communication bining VoIP w ith Peer-to-Peer technology is definitely a new attempt. Facing the complex and open environmen t,the integration of P2P and SIP has brought new security risks,the se- curity of P2P-SIP needs to be improved and enhanced. This paper analyzded the both threats of Registration Hijacking and Tearing Down Sessions to P2P-SIP at fist,and then provided the security solution aimed to the both this paper, the solutions about the both threats are presented in detail:the one is the security mechanism based Layer Model to check the status of to determine whether the Attacker attack exist in , the anther is registration process based on TLS that faced to security services of the Transport Layer. Key Words: P2P-SIP; TLS (Transport Layer Security ); RTP(Real Time Transport Protocol) P2P-SIP 安全认证机制研究申 敏,蔡 菁,何海鹏重庆邮电大学,通信与信息工程学院,重庆 400065 Email: shenmin@, cj1985119@, hehaipeng1985@