Study of Wireless Network Information Trust Evaluation Model in Industrial Control System

Information security of industrial wireless network of Industrial Control System (ICS), which is at a stage of rapid development, has gradually become a hot research. Through the analysis of typical framework of industrial wireless network and factors of network node trust transmission, the corresponding relationship of encourage factor, trust value and current cooperation frequency is proposed in this paper and a trust evaluation model is designed, which takes the abnormal behaviors of nodes, historical trust information and trust information of neighbor nodes into comprehensive consideration. This model avoids the limitation of trust judgment merely through abnormal behaviors of nodes and further ensures the fairness and accuracy of network trust evaluation.