一种基于自证明公钥的P2PSIP可认证密钥协商方案

P2PSIP Authenticated Key Agreement Scheme Based on Self-certified Public Key

在使用P2P网络代替SIP服务器实现SIP功能的系统中,如何有效认证无可信中心的网络中,用户身份及用户间的密钥交换的问题必须得到解决以提供安全通信。本文分析了P2PSIP结构中的安全威胁,针对基于SIP的P2P通信提出了一种基于自证明公钥的可认证密钥协商方案,并分析了该方案的正确性和安全性。

In the system accomplishing the functions of SIP by applying P2 P network in place of SIP server,the problems of how to certify the user identity and how to exchange secret key between users in a network without trusted center must be solved in order to provide secure communication. The security threats in P2 PSIP structure are analyzed and a key agreement scheme based on self- certified public key for P2 P communication is proposed. The analysis of the correctness and security of the scheme is also discussed.