Research On Data Dissemination And Node Clone Attacks Detection In Wireless Sensor Networks

Wireless Sensor Networks(WSNs)are distributed networks composed of tiny sensor devices to monitor natural events or human activities in the deployment environment.In order to uniformly manage the deployed sensor nodes,it is often necessary to send management messages from the base station or Sink node to the sensor nodes.Such data transmission in the opposite direction of data collection is called data dissemination.Data dissemination is an important data transmission mode in WSNs,and a good data dissemination protocol has strict requirements on reliability,transmission efficiency and scalability.In addition,there is the problem of unbalanced energy consumption in different areas in process of data dissemination,and there is little research on attacks in process of data dissemination.This thesis studies the above two problems,and the main work is summarized as follows:(1)Aiming at the problem of unbalanced energy consumption in data dissemination,this thesis proposes a data dissemination algorithm called SPIN-SS(Sensor Protocol for Information via Negotiation based on Sleep Scheduling,SPIN-SS).The algorithm studies the problem of unbalanced energy consumption caused by the different data intensity of nodes in different regions in process of data dissemination.Additional nodes are placed in the communication range of the Sink node,and sleep scheduling is performed for Sink neighbor nodes and additional nodes.Additional nodes are deployed to undertake the distribution task of sleeping nodes,forcing the nodes with high energy consumption to enter the sleeping state to save energy,so as to balance the energy consumption of nodes in the Sink neighborhood and other nodes in WSNs in process of data dissemination.Simulation results prove that the proposed SPIN-SS scheme can achieve better energy consumption balance and improve the performance of data dissemination simultaneously.(2)Aiming at the problem of node clone attacks in the process of data dissemination,a detection scheme based on Single Round Zero Knowledge Proof(SR-ZKP)is proposed.Firstly,the superimposed disjunct code is constructed by using node neighborhood environment information about the node deployment location and unique identification code to generate digital fingerprint of each legal node.the relevant information of the deployment environment of the node and the unique identification code are used to construct a destructuring-separation code,and thus generate a digital fingerprint exclusive to each legal node.Secondly,the digital fingerprint of the node is verified in the zero-knowledge proof scheme based on elliptic curve discrete logarithm,and the clone node without the correct digital fingerprint can be detected.Finally,the SR-ZKP is applied in the SPIN dissemination algorithm for simulation,and the simulation results show that the proposed scheme can ensure high reliability of WSNs in the data distribution process,while low network energy consumption.