Access control scheme on blockchain and decentralized attributed-based algorithm with identity
Zening Chen, Liang Zhang, Shuangjun Zhang, Haibin Kan · Scientia Sinica Informationis · 2021
The identity system on Blockchain is defective. There is a challenge of how to verify users identities and ensure the endorsements realities on Blockchain. The decentralized public key infrastructure running on Blockchain can solve the above problems to some extent, but we can provide an identity-model closer to the real society with the combination of the attribute-based algorithm and Blockchain. This paper proposes an access control scheme based on Blockchain and decentralized the attribute-based algorithm with the identity. It uses mutual authorization between users and organizations to get endorsements of identitys attributes for trust-cost links, and uses the attribute-based algorithm to control and share data on the chain for fine-grained access control and privacy protection. By designing a multi-user collaborative attribute-based algorithm, it offers endorsement capabilities for organizations in the identity-model. Through experimental simulation and comparative analysis, the solution meets the requirements of the current universal Blockchain in terms of security and performance, and provides a universal identity-model.