摘要
SIP正逐步取代H.323协议成为VoIP网络的核心信令控制协议。综述了SIP协议的功能、实体、消息结构,分析了SIP面临的主要安全问题,介绍了IPSec,TLS,HTTP摘要认证和S/MIME等目前流行的SIP安全机制,通过比较分析,指出各种安全措施的主要优缺点。最后对SIP安全问题进行了总结,并指出下一步解决SIP安全问题的研究方向。
Session Initial Protocol（SIP）is currently replacing H. 323 to be the promising signaling protocol for VolP network. In this paper, the function, structure and work flow of SIP protocol are reviewed. Then the security problems faced by SIP,the security mechanisms of SIP, such as IPSec,TLS, HTTP- Digest, S/MIME and so on are analysed and introduced, the virtues and shortcomings of all kinds of security mechanisms are pointed out by comparasion. At last,a conclusion of SIP security and security improvement direction for the future research work is given.
出处
《现代电子技术》
2009年第5期72-74,共3页
Modern Electronics Technique
基金
河南省杰出青年基金资助项目(512000400)
河南省教育厅自然科学研究计划资助项目(2008B120010)
