Research Of Wireless Sensor Network Security Routing

The wireless sensor network(WSN)is composed of various sensor nodes that can perceive the surrounding environment,and is a multi-hop self-organizing wireless communication network.As one of the contemporary social hotpot technologies,it has been widely used in military,environmental monitoring and protection,green agriculture,industrial monitoring,smart home,intelligent transportation,tele-medicine and other fields.Wireless sensor nodes adopt power-supply mode,the hardware storage and calculation of the nodes are limited,at the same time,the network topology changes dynamically,so it is a important direction of the research to design efficient routing algorithm.Since WSN is exposed to the monitoring field,and the transmission channel is vulnerable to the hacking and attack,the security of information transmission need a better solution.This dissertation is mainly summarized as follows:1.Aiming at the difficulty of WSN nodes energy resource limitation and how to realize the efficient utilization of energy,this paper proposes a hierarchical security routing algorithm,which is evenly clustered.Firstly,the monitoring region is divided uniformly by using the hexagonal grid clustering method.Than a cluster head selection and maintenance mechanism and a data fusion strategy are designed reasonably.In order to establish the efficient routing route to transmit data,The optimized hierarchical routing policy and automatical search routing strategy are designed;Finally,the use of precoding approach to ensure the safe transmission of data.Simulation results show that,compared with GRID algorithm,the proposed algorithm can effectively save node energy,balance network load,adapt to large-scale network,extend life cycle.2.In view of the fact that the design of the routing algorithm use precoding approach of network coding,and that the data transmission security mechanisms in network coding exist the defect of inter-generation pollution attacks and the large computing cost,a kind of homomorphic signature authentication scheme is put forward to resist inter-generation and intra-generation pollution attacks.Generation identifiers are used to design signature and verification algorithm without replacing system public and secret key.Under intra-generation and inter-generation pollution attacks,The security of the signature scheme is proved by theoretical analysis.And the performance of the scheme is analyzed in the two aspects:communication cost and computational cost.Results show that the scheme can effectively detect any intra-generation and inter-generation pollution attacks by altering generation identifiers,and can realize the independent authentication of multiple generation source information with a small communication and computational cost,efficient and safe.