Trusted Access Mechanism of Field Device in Industrial Edge Computing Environment

With the increasing access of field devices into industrial networks, establishing a trusted access mechanism has become a critical precondition for the deployment of industrial networks. In order to ensure the trustworthiness of field devices in industrial edge computing environments, the reputation mechanism should be solved, which can be achieved through the trusted access mechanism in proposed. The mechanism outlined in this paper incorporates two methods. The first method involves field device authentication based on reputation value, and the second method focuses on trust evaluation based on comprehensive evaluation. Distinguished from the traditional PBFT and RBFT where all nodes participate in the consensus, high-scoring nodes are selected to participate in the consensus based on their reputation values, dynamically updating the reputation values. A test platform has been developed for validating this mechanism, with results indicating that the time of authentication and consensus have been reduced, the detection rate of the proposed trust evaluation mechanism has been improved, confirming the stable feasibility and good reliability of the proposed trusted access mechanism.