【摘要】 移动自组网是一种有特殊用途的对等式网络,具有无中心、自组织、可快速展开、可移动等特点,这些特点使得它在战场、救灾等特殊场合的应用日渐受到人们的重视.由于在移动自组网络中每节点既是主机又是路由器,所以容易遭受基于路由信息的攻击,而现今的路由协议基本没有考虑到该问题.本文在分析移动自组网络安全特性的基础上,综述了该方面的研究工作,建立了基于声誉机制评价体系,并给出了具体的评价方法和计算模型.在此基础上,提出了基于声誉机制的安全路由协议S DSR .仿真结果表明在存在攻击节点的情况下S DSR协议比DSR协议具有更好的包传输率、包丢失率等属性.更多还原

【Abstract】 Mobile Ad hoc network is a special peer-to-peer network that is infrastructureless,self-organizing,dynamically reconfiguration and mobile.And now people pay more attention to the using of ad hoc network in emergence area such as battle field and disaster rescue.Each node in mobile ad hoc network can be regarded as either a computer or a router,so it is very vulnerable to routing information attacks.However,little information about the security problem has been considered in the routing protocols that have been proposed.In this paper,an overview of the research about attacks against routing information is given firstly,and then we present that a security routing protocol S-DSR based on reputation systems can be used in ad hoc networks.The simulation environment and results is given and the simulation results show that S-DSR protocol can get better than DSR protocol while there exists attacking nodes.更多还原