摘要
低地球轨道(LEO)卫星网络的路由是当前卫星通信领域的研究热点,其安全问题也日益受到研究人员的重视。本文通过分析LEO卫星网络按需路由协议面临的安全威胁,使用基于身份的签密方案,提出了一种适合卫星网络拓扑特性的安全的按需路由协议。针对协议的密码算法处理时间开销较大的特点,设计了自适应的概率性延迟验证机制,能够降低协议的平均路由建立时间。安全性分析和仿真实验结果表明,该协议能够抵抗多种外部攻击行为,以有限的路由建立时间和路由开销为代价,保证了稳定的包传输率。
Research on routing in Low Earth Orbit Satellite Networks is a hotspot in areas of satellite communications, and how to secure routing algorithms has been attached increasing importance. After a terse analysis of security threats faced by on-demand routing protocols for satellite networks, a secure an-demand muting protocol is presented, which is on the basis of identity-based signcryption schemes and fit for the features of satellite network topology. According to the protocol＇ s characteristic of heavy time overhead in processing crypto algorithms, a mechanism called delayed verification with adaptive probability is designed for decreasing route discovery time. Security analysis and simulation experiments show that the proposed protocol can resist typical outside attacks and guarantee steady packet delivery ratio at the cost of finite increase in route discovery time and route overhead.
出处
《信号处理》
CSCD
北大核心
2010年第3期337-346,共10页
Journal of Signal Processing
基金
国家863计划项目(2008AA7010305)
关键词
LEO卫星网络
按需路由协议
安全路由
基于身份签密
LEO satellite networks
on-demand routing protocol
secure muting
identity-based signcryption
