摘要
会话初始协议(SIP)是以软交换为基础的下一代网络的核心信令控制协议,被广泛应用于基于IP的实时多媒体会话的控制与管理;Retargeting是SIP呼叫过程中普遍存在的一种路由模式。Retargeting呼叫模式下的响应身份问题是SIP安全研究领域的一个难点。该文首先阐述了该问题的产生机理,然后提出了一种基于逆向通告的响应身份鉴别机制,最后对其安全性能进行了概要分析。
The Session Initiation Protocol （SIP） which is widely applied to the control and management of the IP-based real multimedia session is the core signaling control protocol of the Next Generation Network （NGN） based on softswitch; Retargeting is a ubiquitous routing pattern in the course of the SIP call process. Response Identity Problem with Retargeting （RIPR） is a difficulty spot in the security research area of SIP.This paper firstly expatiates on cause and effect of the RIPR,then it proposes a Response Identity Authentication Mechanism based on Backwards-Direction Notification and makes a brief analysis of its security at the end.
出处
《计算机安全》
2008年第10期24-28,共5页
Network & Computer Security
关键词
会话初始协议
目标重定
逆向通告
事件包
响应身份鉴别
Session Initiation Protocol
Retargeting
Backwards-Direction Notification
Event Package
Response Identity Authentication
