Abstract

In order to solve the problems of single point of failure and lack of dynamic permission management in traditional centralized access control methods of Internet of Things, an Internet of Things access control method based on Hyperledger Fabric blockchain framework was proposed. The method on the basis of attribute-based access control, using the blockchain technology realize the decentralization of Internet equipment, automation and fine-grained access control. At the same time, the trust value is used as an additional attribute to evaluate the trust relationship between different domains and nodes, and the trust value is updated after each interaction to assign different access permissions to different nodes, so as to realize dynamic permission management. The results of theoretical analysis and experimental simulation shows that the scheme can maintain high throughput in a large number of requests while ensuring fine-grained and dynamic access control.

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