【摘要】 为保证机密信息在可信的Ad hoc网络路径中传输,需要在存在弱信任关系的Ad hoc网络节点间建立安全可靠的路由.根据Ad hoc网络的独有特性,提出一种安全按需路由策略,按这种策略建立起来的路径可以确保消息可靠传输.由分布式CA认证网络中节点的身份,运用Hash函数完成数据的单向生成,根据Diffie-Hellman密钥交换算法生成节点间的对话密钥.安全按需路由的生成由路由请求和路由响应两阶段完成.通过安全按需路由策略在Ad hoc网络中建立起节点间的安全通信路径,策略中关键节点的身份被隐藏,只有最优路径上的节点能获得完整路由信息.一个公开的单向哈希函数可以认证形成的路由信息,并使用高效安全的密钥交换算法进行秘密信息交换.安全路径建立起来后在其上就可以实现信息的可靠传输.安全按需路由策略的提出是建立在原来成熟的按需路由策略上的,引入的各种技术手段易与本策略结合,所以本安全按需路由策略具有可行性,能保证信息安全传输.更多还原

【Abstract】 Considering the infirmness trust relation between nodes in Ad hoc network,we need to found authentic route and ensure secret information to be transmitted on it.According to the specialities of dynamic Ad hoc network,a safe on-demand routing strategy is presented,so that secret information could be thanfmitted safely.In the strategy,we employ distributing CA to authenticate node’s ID,a one-way hash function to compute data used in the strategy and Diffie-Hellman key exchange algorithm to create the communication key.The strategy is composed of route requiring and route answerring two phases.By using of safe on-demand routing strategy,we could found an authentic route to transmit information.The IDs of critical nodes are hidden and the integrity routing information only be given to the nodes on the optical route which be selected by the destination node in the routing phase.A public one-way hash function is used to authenticate route information and an efficient key exchange algorithm to be used to exchange secret imformation.The new strategy is based on original on-demand routing strategy and made of many techniquie means.It has feasibility and security.Considering the infirmness trust relation between nodes,we employ distribution CA to authenticate node’s ID.According to dynamic topology structure of Ad hoc network,a safe on-demand routing strategy is presented.In the strategy,distributing CA has the responsibility to authenticate nodes’s ID.更多还原