The introduction of edge computing technology provides low-latency and efficient computing services for industrial field devices,and the problem of long distance and high latency of cloud computing data transmission has been solved.However,compared with traditional internet,industrial edge computing networks face more threats.As the defense within the edge network security system,authentication is the key to ensure the trusted access of industrial edge computing nodes.An identity authentication mechanism based on the consortium blockchain for edge computing nodes is proposed for industrial edge computing application scenarios.In this mechanism,the summary of identity information is written as a transaction in the consortium blockchain ledger.Transactions are associated with distributed storage systems.The edge node reputation evaluation mechanism has been introduced,which the node with high reputation value is selected as the consensus node.The test results have clearly shown that the proposed method can provide efficient,secure,and distributed authentication services for edge computing nodes at a relatively low cost.
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