Data access authority control method and system based on block chain

Through the blockchain-based layered permission module and dynamic permission adjustment module, combined with machine learning and hardware security units, the single point of failure and rigid permission management problems of traditional access control models are solved, and permission automation, fine-grained control and cross-organizational collaboration are realized, and the security and efficiency of data access are improved.

CN120389897APending Publication Date: 2025-07-29WUHAN SPARK ZHONGDA INFORMATION TECH CO LTD
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Patent Information

Application Number
CN202510633956.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-16
Publication Date
2025-07-29

AI Technical Summary

Technical Problem

In the digital era, the traditional role-based access control model has problems such as single point of failure risk, rigid authority management, low cross-organization collaboration efficiency, high security risks for centralized data storage, low authority granting efficiency and defects in audit traceability mechanisms.

Method used

The hierarchical permission module, dynamic permission adjustment module, multi-chain collaboration module and key management module are adopted to define the role access granularity through smart contracts, combine machine learning to analyze user behavior, introduce attribute encryption and zero-knowledge proof, and use hardware security units to generate true random number private keys to realize permission automation, fine-grained control and cross-chain verification.

Benefits of technology

It realizes transparent traceability of permission allocation records, reduces the risk of human tampering, improves permission management efficiency, supports cross-organizational collaboration, reduces the risk of data leakage, enhances the system's dynamic defense capabilities, and improves the security of data transmission channels.

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Abstract

The invention discloses a data access permission control method and system based on a block chain, and relates to the technical field of block chains, the system is composed of a plurality of function modules, and the system comprises a hierarchical permission module which adopts a role hierarchical strategy and defines the access granularity of a role through an intelligent contract; the dynamic permission adjustment module is used for dynamically adjusting the permission range by analyzing user behaviors in real time through machine learning according to the principle of following the minimum permission in the permission distribution process; attribute encryption and zero-knowledge proof are introduced, an access key is dynamically generated according to user attributes, and sensitive information is hidden in the verification process; the multi-chain collaboration module is used for coding an intelligent contract through an authority rule, automatically executing access request verification, storing encrypted data through a private chain, managing an index and an access strategy through an alliance chain, isolating a storage domain from an access domain, and carrying out process traceability on a data request through a cross-chain verification mechanism; and the key management module is used for generating a true random number private key by adopting a hardware security unit.
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