Research On Secure Routing Mechanism Of Wireless Sensor Networks Based On Trust Perception

With the progress of science and technology and the rapid growth of the human demand for information services,the application of wireless sensor network(WSN)has expanded rapidly in recent years.WSN is an efficient,dynamic,survivableis wireless network which is established by many intelligent wireless nodes or terminals through wireless communication,whose communication depends on mutual cooperation between nodes,not rely on any fixed infrastructure.Due to the flexibility of networking and the openness of information,the problem of information security transmission has been paid more and more attention.Trust sensing routing protocol is an effective way to improve the security of wireless sensor networks,which was one of the most popular network technologies for smart cities.However,the trust overhead of the evaluation process has affected the communication performance of the network seriously in the traditional trust sensing routing protocol.At the same time,because the WSN is often deployed in unattended or hostile environment,the security of the network will also have a great impact on data transmission,which will also greatly reduce use the value of WSN.Aiming at the serious impact of the typical network attacks caused by the limited energy and the poor deployment environment of WSN on data transmission,a trust sensing based secure routing mechanism(TSSRM)with the lightweight characteristics and the ability to resist many common attacks simultaneously is proposed in this paper.Based on the analysis of the characteristics of network attack,the trust degree calculation model is constructed by combining node's behavior with energy,at the same time the security route selection algorithm is also designed and deeply optimized by taking trust degree and QoS metrics into account.Performance analysis and simulation results show that TSSRM can achieve the security and effectiveness of WSN.