基于口令应答的协作式WSNs移动复制节点检测方法研究

摘要

目前，针对无线传感器网络复制节点攻击研究主要集中在对静态网络中复制节点的检测。WSNs的应用中，节点部署在一定区域形成静态网络并采集信息，为了减少节点间通信量、降低能耗，若干个节点形成一个簇，簇内选举簇头节点作为簇间通信人。静态网络采集的信息通常由汇聚节点回收，为了方便，汇聚节点通常采用移动形式加入网络，收集完后离开。如果这类在移动中收集信息的节点是复制节点，对整个WSNs的威胁比静态网络中的复制节点威胁更大。在借鉴已有的移动网络检测方案的基础上，针对静态网络分簇和移动节点位置经常变换的特点，提出了基于口令应答的协作式WSN移动复制节点检测方法CRCDS（Challenge/Response and Collaborative Detection Scheme），有效利用静态网络的存储空间，采取静态网络和移动节点相互协作的方式，规避因移动节点位置变化对检测结果的影响，并从理论和实验上分析了该检测方法的安全性和可行性。%At present,the research of replication nodes attacks in wireless sensor networks mainly focus on the de⁃tection of replication nodes in static network.In ordinarily WSNs applications,nodes deployed in a certain area form⁃ing a static network to gather information,in order to reduce inter-node communications,so as to reduce energy con⁃sumption,a few of nodes form a cluster,each cluster elect cluster head node as an out-cluster communication. When information collecting task is completed,the sink node collect its cluster information. Sink node in the pro⁃cess of collecting information can act as mobile node and joins to the network. If the mobile information collecting nodes is replication nodes,it would be more dangerous than the replication nodes in the static network,so the re⁃search of mobile replication nodes detection is necessary. On the basis of analysis existing mobile network detection method,full consideration of static network clustering feature and mobile node position constantly changing,a mo⁃bile replication nodes detection method based on Challenge/Response and Collaborative Detection Scheme (CRCDS)is proposed in this study,in which effective use the static network storage space,take a strategy of static networks and mobile replication nodes mutual cooperation,to avoid the affect of detection probability due to posi⁃tion changes of the mobile nodes,the theoretical analysis and the experimental results show its safety and feasibility.