Alliance block chain system for data privacy protection

A privacy protection, data-oriented technology, applied in digital data protection, data processing applications, structured data retrieval, etc., can solve the problem of data privacy protection, save storage space, improve efficiency, and be easy to implement.

Active Publication Date: 2021-01-19
HUAZHONG AGRI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the technical problems existing in the prior art, the present invention provides a data privacy pro

Method used

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  • Alliance block chain system for data privacy protection
  • Alliance block chain system for data privacy protection
  • Alliance block chain system for data privacy protection

Examples

Experimental program
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Embodiment 1

[0048] Embodiment 1 provided by the present invention is an embodiment of a data privacy protection-oriented consortium blockchain system provided by the present invention. The embodiment of the consortium blockchain system includes: certification nodes, verification nodes and blockchain ledger modules . Proof nodes and verification nodes contain smart contracts, and smart contracts include scope management contracts and proof contracts.

[0049] In the specific implementation process, in the first step, the alliance blockchain system is initialized. First, the blockchain network is established, and three kinds of smart contracts are instantiated on all nodes, and the verification node invokes the specified scope of the scope management contract; the second step is to prove that The node calls the proof contract to preprocess its private data; the third step is to generate a range proof and upload it to the blockchain; the fourth step is to verify that the node checks the rang...

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Abstract

The invention relates to an alliance block chain system for data privacy protection. The alliance block chain system comprises a proof node, a verification node and a block chain account book module.The intelligent contract comprises a range management contract and an attestation contract; the certification node preprocesses the private data read from the client to generate parameters, calls a range management contract to download a range at a specified position from the blockchain account book module, and the attestation contract generates a zero-knowledge certification according to the parameters and the range and uploads the zero-knowledge certification to the blockchain account book module; and the verification node calls an attestation contract to determine a zero-knowledge attestation, calls a range management contract to determine a range according to the zero-knowledge attestation, and verifies the private data based on the range. The latest non-interactive zero-knowledge-range proving technology is combined with the alliance block chain in a weak coupling mode, generation and verification of zero-knowledge-range proving in a standard range and any range are supported, andthe system can be used for privacy protection data auditing scenes under cross-organization supervision and management.

Description

technical field [0001] The invention relates to the technical field of computer information security, in particular to an alliance block chain system oriented to data privacy protection. Background technique [0002] Consortium blockchain has been widely used in different scenarios and has become a major solution across companies and organizations. As a distributed ledger, consortium blockchain has significant advantages, such as better security (especially data integrity), higher transparency, stronger traceability, etc. Given the inherent characteristics of transparency and traceability, the confidentiality and privacy of data on consortium blockchains are easily violated when deploying and operating blockchain systems. Additionally, many applications on consortium blockchains require auditing of the data they upload without exposing the data itself. In the scenario of cross-organizational supervision and management, the demand for consortium blockchain is extremely stro...

Claims

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Application Information

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IPC IPC(8): G06F16/27G06F21/62G06Q40/04
CPCG06F21/6245G06Q40/04G06F16/27
Inventor 徐士伟蔡晓雯童言杜乐赵逸之池红梅李国亮
Owner HUAZHONG AGRI UNIV
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