Research on Distributed Network Authentication and Access Control Mechanism Based on Blockchain Technology

Blockchain technology, as a distributed system for establishing trust, especially the consensus-based federation chain architecture, fully meets the requirements of identity authentication under the conditions of multi-party collaboration in cyberspace. Therefore, in order to solve the limitations of centralized identity authentication technology, this paper researches the problem of distributed identity authentication and access control mechanism, and realizes the design of KP-ABE access control scheme with multi-manager collaboration by using blockchain-based technology, and tests the performance of the scheme. The test results show that the higher the privacy level of the data, the higher the amount of access control requests, the more complex the access control policy, and the longer the policy retrieval time and judgment time. Meanwhile, the increase of access control policies leads to a decrease in the rate of judgment success. Compared with the other two schemes, this paper’s scheme takes into account the communication volume on the basis of guaranteeing user anonymity, and the total computational overhead of requesting information is much smaller than the other two schemes. This shows that the distributed network authentication and access control scheme designed based on blockchain technology in this paper can meet the needs of cross-domain authentication and access control between users and information service entities in large-scale environments.