| Because wireless sensor network(WSN)is widely used in many fields,its working environment is unstable and there are many uncontrollable factors.Therefore,the security of wireless sensor networks has become the focus of academia.At present,the security technologies that mainly focus on encryption and authentication,key management,secure routing and intrusion detection improve the security of wireless sensor networks to a certain extent,but these protection technologies are still based on static and fixed Web environment.After the network configuration is completed,the various configuration information in the network will not change during the operation of the network,thereby giving the attacker enough time to detect the network information,discovering the defects of the network configuration,and actively launching the effective Attack,thus greatly reducing the effectiveness of security technology.Focusing on the security problems faced by WSN,the moving target defense(MTD)technology in WSN are deeply studied.According to the idea of MTD and game theory,a cross-layer MTD scheme of WSN based on stochastic game model is designed for a typical ZigBee wireless sensor network.The scheme can realize the randomization of the encryption configuration and the network topology,strengthen the confidentiality of the network communication data and the security of the network topology information.At the same time,this paper designs a MTD model based on stochastic game,uses stochastic transfer strategy algorithm based on stochastic game model to generate stochastic transfer strategy,which can effectively reduce the performance loss caused by the MTD mechanism and the availability of the MTD scheme are improved,realized an efficient randomized MTD for the WSN.Based on the above MTD scheme,a WSN system with MTD is designed and implemented.The system is deployed and tested in a real sensor network environment,and the effectiveness of the system is verified. |
PDF Full Text Request