Research On Replica Node Detection Method Based On Key Distribution In WSN

Wireless sensor network(WSN)is a kind of new custom communication network,which is composed of a large number of low power consumption,perceived ability,fast calculation speed and low cost of the sensor nodes with self organization form.Because the nodes in the wireless sensor network are relatively independent,there is no support for the relevant hardware equipment,at the same time,the environment of the wireless sensor network is often worse.If the damaged or captured nodes reach a certain amount,it will affect the normal communication of the whole network,a serious threat to the security of the network.Therefore,it is necessary to strengthen the research on the security of wireless sensor networks.This paper is directed against the key distribution scheme using the elliptic curve encryption algorithm in the wireless sensor network can not realize the problem of bidirectional authentication between nodes and the problem of high node storage cost and low detection rate in the node detection,proposed a node replication detection scheme based on key distribution.The detailed design content of the project,mainly divided into the following aspects.Firstly,propose a lightweight key distribution scheme based on public election.This scheme improves the shortcomings of traditional elliptic curve encryption algorithm(ECC)that can not be verified by both sides.At the same time,in the CPK mechanism to introduce the concept of the public to achieve the system master key to determine,and then use the master key to complete the cluster head node signature verification of ordinary nodes.After the cluster head node was verify the common node,the mutual authentication between the common nodes is realized by using the node signature,which solves the problem of the computation cost and communication cost in the process of authentication between nodes.Secondly,propose a partition replication node detection scheme based on position information.The scheme is based on the premise of the key distribution,the use of node location information partition,limiting the attack node attack area.At the same time,the concept of auxiliary witness node is proposed,which can effectively reduce the storage consumption of nodes and further improve the efficiency of replication node detection.Finally,the proposed scheme in this paper is verified by OPNET simulation software.The experimental results show that proposed the scheme of replica node detection based on key distribution in this paper is effective in improving the detection rate,security and communication cost.