东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2004, Vol. 25 ›› Issue (11): 1042-1045.DOI: -

• 论著 • 上一篇    下一篇

软交换中的一种安全策略

林娜;王赜;王光兴   

  1. 东北大学信息科学与工程学院;东北大学信息科学与工程学院;东北大学信息科学与工程学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2004-11-15 发布日期:2013-06-24
  • 通讯作者: Lin, N.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(863 701 2 4;863 708 5 4)

Security strategy in softswitch

Lin, Na (1); Wang, Ze (1); Wang, Guang-Xing (1)   

  1. (1) Sch. of Info. Sci. and Eng., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2004-11-15 Published:2013-06-24
  • Contact: Lin, N.
  • About author:-
  • Supported by:
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摘要： 针对软交换中的SIP协议没有定义自身的安全机制,提出了一个可行的解决方案·简单叙述了软交换中的SIP协议的功能,特点和工作机制,并指出SIP协议中存在的安全性问题,详细分析原本为电子邮件明文的加密和签名设计的加密方法PGP(PrettyGoodPrivacy)的安全策略,加密过程,安全强度及其性能等·提出了将应用广泛、安全性高的安全策略PGP引入SIP协议中,以满足SIP消息传输中的安全要求·具体阐述了PGP在SIP协议中应用的实现方法,列举了经PGP加密的SIP邀请消息格式和用PGP数字签名的SIP消息格式·

关键词: 软交换, SIP, 安全策略, PGP, 加密

Abstract: A feasible solution is proposed to the security problem of SIP protocol in softswitch since no security strategy has been defined by SIP itself. The function characters and working mechanism of SIP protocol in softswitch, especially its existing security problem are described briefly. Then the security strategy, encryption process, security and performance of PGP (Pretty Good Privacy) which is originally designed for encryption and signature of e-mail are analyzed in detail. The widely-used highly secure PGP security strategy is thus introduced into SIP protocol to meet the security requirements of SIP message transmission. Expatiates the implementation of PGP in SIP protocol is expatiated and the formats of SIP INVITE message with PGP encryption and with digital PGP signature is examplified.

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