Construction of Trusted Group in Distributed Internet of Things

How to build trusted group is a key problem to be solved in the IOT environment. In this paper, a trusted measurement scheme suitable for distributed networking is proposed. Its measurement methods mainly include environmental trusted measurement, direct trusted measurement, indirect trusted measurement, and the final comprehensive trusted measurement. In the node trusted measurement, the indirect trusted measurement of multiple nodes in the group is added, and the trust evaluation value of each node in the group is comprehensively considered. During the trusted individual joining, build a trusted group with similar group characteristics. In the security environment maintenance, a relatively optimal relay node selection mechanism is given to avoid the load imbalance. At the same time, the nodes in the trusted group exclude malicious nodes according to the voting method to maintain the safe and reliable operation of the network. 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.