Construction of Trusted Group for Centralized IOT

How to build trusted group is a key problem to be solved in the IOT environment. For centralized networking, this paper proposes a trusted group construction mechanism based on trusted measurement, analyzes the network characteristics of centralized networking, and gives a simple network topology. Adopt hierarchical management to Trusted measurement of the perceived nodes of the IOT. On this basis, build a trusted group, determine whether the trusted individuals join or not, periodically replace the domain management nodes, and detect and eliminate malicious nodes, so as to maintain the dynamic and trusted operation of the group. Simulation results show the credibility measurement results in this mechanism can well reflect the real state of the perceived nodes of the IOT, and can timely identify and eliminate malicious nodes, it also has a good performance in group energy consumption.