Consortium chain permission control method based on digital certificates and CA authentication system

Abstract

The invention discloses a consortium chain permission control method based on digital certificates and a CA authentication system. In a consortium chain, the enrollment control and automatic authorization of the consortium chain are realized through a layered digital certificate issuance system. The method of the invention pre-defines three kinds of permission mechanisms for respectively controlling enrollment permissions between consortium chain nodes, role permissions of the consortium chain nodes and access permissions of blockchain users. Three kinds of digital certificates including the enrollment certificate, role certificate and transaction certificate are used for respectively controlling the three permissions of node enrollment, role identification and client enrollment. An internationally accepted elliptic curve digital signature algorithm or a national crypto digital signature algorithm is used for achieving the generation of the digital certificates and secure message signature and validation, the defects of being large in permission granularity of a traditional blockchain or even having no enrollment functions and the like are overcome, the blockchain users are provided with anonymous transaction features, the security of blockchain transactions is improved, and the privacy needs of the users are met.

Description

technical field [0001] The present invention relates to a decentralized blockchain ledger technology and an authority control method, in particular to an alliance chain authority control method based on a digital certificate and a CA certification system. Background technique [0002] Blockchain technology, blockchain is a new type of decentralized protocol that can safely store digital currency transactions or other data, information cannot be forged and tampered with, and transaction confirmation on the blockchain is shared by all nodes on the blockchain Completed, the consistency is guaranteed by the consensus algorithm. A public ledger is maintained on the blockchain to store the balance of all users on the blockchain network. The public ledger is visible to any node on the storage block, thereby ensuring that it cannot be forged and tamper. [0003] On the traditional blockchain, all users are anonymous and have no access control. Anyone can join or exit. In the specia...

AI Technical Summary

Problems solved by technology

The internationally accepted elliptic curve digital signature algorithm or national secret digital signature algorithm is used to realize the generation of digital certificates and the signature and verification of security messages, which solves the defects of traditional block chains such as large granularity of authority or even no access function, and provides a new foundation for the district. Blockchain users provide anonymous transaction features, which improves the security of blockchain transactions and meets the privacy needs of users

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