Layered consensus mechanism of comprehensive value based on primary-secondary chain in industrial edge computing environment

In the open industrial network environment, in order to ensure the safety and reliability of the accessed industrial devices, blockchain technology is introduced into the identity authentication mechanism in the industrial edge computing environment, which realizes the trusted authentication of the industrial devices through decentralization and consensus. With the proliferation of the number of accessed devices, the authentication process will cause a large amount of communication consumption and computational load, which seriously affects the availability of authentication. Therefore, how to safely and efficiently realize the consensus communication and storage consumption is large is the current problem that needs to be solved urgently. In order to solve the above problems, this paper designs a hierarchical PBFT consensus mechanism based on master-slave chain with integrated value to elect consensus nodes. For the problem of large PBFT consensus communication and storage consumption under the master-slave chain structure, the reputation value and performance value of the edge nodes are considered comprehensively in this mechanism, and the comprehensive value is calculated by using the triangular fuzzy hierarchical analysis method, and the high-scoring edge nodes are selected as the consensus nodes. Finally, the mechanism is verified and analyzed by the constructed test system. The results verify that the proposed consensus mechanism can reduce the communication consumption of the consensus process.