基于PSTN固网与IMS互通的身份认证  

Research on Identity Authentication Based on PSTN Fixed Network Interworking with IMS

作　　者：李翔鹰 LI Xiangying(Unit 91917, PLA, Beijing 100841, China)

机构地区：[1]中国人民解放军91917部队

出　　处：《计算机与网络》2019年第10期59-61,共3页Computer & Network

摘　　要：在IMS大范围部署及PSTN固网与IMS网络互通的背景下,根据PSTN固网与IMS互通的安全需求,分析并扩展了MGCF,BGCF以及I-CSCF核心网元的功能实现,分别在MGCF与I-CSCF之间,以及BGCF与MGCF之间实现HTTP双向摘要认证。结合MGCF信令转换功能,以MGCF为核心,按照PSTN固网与IMS互通的去话、来话呼叫流程,给出MGCF与相关网元完成双向摘要认证以及SIP与ISUP信令转换的工作流程,有效避免了网元间的假冒服务器攻击和假冒客户端攻击。With the large-scale deployment of IMS, the PSTN Fixed Network is interworking with IMS gradually. Under this background, the functions of core network elements such as MGCF, BGCF and I-CSCF are analyzed and expanded according to the security requirement of PSTN fixed network interworking with IMS.And HTTP two-way digest authentication is realized between MGCF and I-CSCF, and between BGCF and MGCF respectively. The process of HTTP two-way digest authentication with MGCF and related network elements is given by call process based on incoming and outgoing calls between PSTN Fixed Network and IMS as well as the workflow of SIP and ISUP signaling conversion,which effectively avoids the counterfeit server attack and the counterfeit client attack among network elements.

关 键 词：IMS MGCF 身份认证 SIP PSTN固网 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]