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Data assessing control method based on blockchain

An access control and blockchain technology, applied in digital data protection, electrical digital data processing, special data processing applications, etc., can solve problems such as poor data access controllability and large blocks

Inactive Publication Date: 2017-08-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above-mentioned prior art, the purpose of the present invention is to provide a data access control method based on blockchain, which solves the problem of poor controllability of data access and block access caused by the limitations of control authority design and block data storage structure in the prior art. Huge and other technical issues

Method used

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  • Data assessing control method based on blockchain

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Embodiment 1

[0059] 1. User registration. After the user registers successfully, generate the public key PUKu, private key PRKu, shared key SKu and predefined access rights list Alu; agent generation generates public key PUKa, private key PRKa, shared key SKa and predefined access rights list Ala; other After the institution or user registers successfully, generate public key PUKo, private key PRKo, shared key SKo and predefined access authority list ALo. Users exchange public keys and shared secrets with agents; organizations exchange public keys and shared secrets with agents.

[0060] 2. Consensus and processing nodes process user registration information. The agent calculates according to its own information PUKa, Ala user registration information PUKu, Alu, institution registration information PUKo, Alo,

[0061] Take the hash value of (PUKu, PUKa) as the index Iu of the storage tuple (PUKu, PUKa, ALu, Pu) (P represents the hash value of encrypted user data, which is empty at this t...

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Abstract

The invention discloses a data assessing control method based on a blockchain, and relates to the technical field of management and control of data of blockchains. According to the technical scheme, the technical problem in the prior art that the controllability in data assessing is poor and a block is large due to design boundedness of control authorities and storage structures of block data is solved. The data assessing control method based on the blockchain mainly comprises the steps that data of all users can be only accessed through users and agents, any third party who wants to access user data must send requests to the agents so that the third party can conduct accessing as the identity of the agents; all access logs of the user data can only be accessed by the agents and the users, any third party who wants to access logs must send requests through the agents so that the third party can conduct accessing as the identity of the agents. The data assessing control method based on the blockchain is used for designing a data sharing and accessing control system based on a large data environment.

Description

technical field [0001] The invention relates to the technical field of block chain data management and control, in particular to a data access control method based on block chain. Background technique [0002] The era of big data puts forward higher requirements for data sharing and data security. In the traditional mode, there are basically no accompanying protection measures because of sharing, or the data is too tightly managed to limit sharing. In addition, there is redundancy in the blockchain data of the prior art. Contents of the invention [0003] In view of the above prior art, the purpose of the present invention is to provide a data access control method based on block chain, which solves the problem of poor controllability of data access and block Huge and other technical issues. [0004] In order to achieve the above object, the technical scheme adopted in the present invention is as follows: [0005] Blockchain-based user data access control methods, inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/62G06F17/30H04L29/06
CPCG06F21/6227G06F16/2255H04L63/061H04L63/10
Inventor 张小松陈永丰夏琦黄可陈瑞东
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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