CAJ | 학술논문

SIP以其灵活的部署特性,为多媒体会话带来了便利。但由于协议本身对安全机制的考量较少,其面临的安全威胁也很多样。本文着重研究了SIP身份认证的安全方案,结合现有的公钥认证体制,提出了一种基于（2,2）秘密共享加密方案的SIP身份认证方案,实现了通信双方的双向身份认证,同时也实现了会话密钥的分发。
SIP이기령활적부서특성,위다매체회화대래료편리。단유우협의본신대안전궤제적고량교소,기면림적안전위협야흔다양。본문착중연구료SIP신빈인증적안전방안,결합현유적공약인증체제,제출료일충기우（2,2）비밀공향가밀방안적SIP신빈인증방안,실현료통신쌍방적쌍향신빈인증,동시야실현료회화밀약적분발。
SIP brings so much convenience to the Multimedia session with its fexible deployment features.But a lack of powerful security mechanism,lead it to face many security threats.In this paper,research the SIP authentication scheme which existed and analysis there security problems.In order to solve the problems in SIP authentication,proposed a new method about authentication based on Secret Sharing and public key authentication system.This scheme provides bidirectional identity authentication and at the same time realizes the session key distribution.