A regulated identity management system based on blockchain platform

The objective of this study is to propose a new regulable blockchain trusted management identity system, which can solve the fundamental problem of blockchain node identity management with large gaps in application requirements, trust models, and regulatory compliance. To achieve this goal, firstly, a hierarchical CA system framework is established, using cross-domain nodes to store hash lists of certificate chains, and achieving node identity authentication and authority management through the division of certificate functions. Secondly, the certificate designed in this study is used for cross-domain authentication and interaction of business terminals. This study designs dynamic authority access of terminals and authority-based authentication mechanism to realize identity access and cross-domain authentication of terminal entities between domains. While ensuring security and certificate validity, it reduces the number of hash operations and verification signatures and improves the efficiency of cross-domain authentication compared with existing blockchain cross-domain authentication schemes. It provides a systematic solution for identity security and privacy protection when various facilities are connected to the blockchain system.