Distributed CA certificate management system based on block chain

By building a blockchain distributed CA certificate management system and adopting a public cross-trust list and cross-chain trust structure, the mutual recognition problem of the traditional CA system in a multi-chain environment is solved, the unified and automated management of cross-chain identity authentication is achieved, and the scalability and security of the system are improved.

CN120768558AActive Publication Date: 2025-10-10GUANGXI DIGITAL CERTIFICATION CO LTD
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Patent Information

Application Number
CN202511025464.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-24
Publication Date
2025-10-10
Estimated Expiration
2045-07-24

AI Technical Summary

Technical Problem

Traditional CA systems do not recognize each other in a multi-chain environment, resulting in a lack of a unified identity authentication mechanism for cross-chain operations. The multi-level CA structure in traditional PKI is complex, the trust chain verification cost is high, and the management efficiency is low, making it difficult to meet the needs of efficient and trusted identity authentication in a distributed environment.

Method used

Build a distributed CA certificate management system based on blockchain, adopt a public cross-trust list and cross-chain trust structure, introduce a state transition system, design a hierarchical CA structure, and combine smart contracts to realize automatic management and verification of certificates.

Benefits of technology

It realizes the CA mutual recognition mechanism between different blockchain systems, improves the interoperability of cross-chain operations and the uniformity of identity authentication, reduces the complexity and cost of trust chain verification, ensures the security and reliability of identity authentication, and adapts to complex multi-chain heterogeneous environments.

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Abstract

The invention relates to the technical field of digital certificate management, in particular to a block chain-based distributed CA certificate management system, which comprises a certificate generation module, a block chain module, an authority control module, an intelligent contract module and an identity authentication module, according to the scheme, by constructing the public cross trust list and the cross-chain trust structure, a CA mutual recognition mechanism between different block chain systems is realized, so that the interoperability of cross-chain operation and the uniformity of identity authentication are effectively improved; a state transition system is introduced to dynamically manage a public cross trust list, flexible joining of new CA nodes and participants is supported, and the method can adapt to a complex multi-chain heterogeneous environment; a hierarchical CA structure design is adopted, a complete certificate chain is constructed, a traceable identity trust path is formed, and the security and reliability of an identity authentication process are ensured in combination with the non-tampering characteristic of a block chain technology and the automatic execution capability of an intelligent contract.
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