Social network information access sharing method based on block chain

A blockchain, access request technology, applied in the blockchain field, can solve problems such as the inability to achieve flexible and fine-grained access control

Pending Publication Date: 2022-06-07
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the traditional encryption mechanism can use encryption technology to protect the security of information, the traditional encryption mechanism can only perform one-to-one encryption, that is, information encrypted with a

Method used

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  • Social network information access sharing method based on block chain
  • Social network information access sharing method based on block chain
  • Social network information access sharing method based on block chain

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0042] Existing online social networks have led to privacy breaches, insecurity of user data access due to centralized data management mechanisms, and inefficiencies in access control and data availability of current distributed social networks.

[0043]In order to solve the problems in the above, in this method, an access control method based on hierarchical relationships and attributes is designed, such as Figure 1 as shown.

[0044] Using blockchain as the carrier of access control and on-chain data storage, the benefits of this method are:

[0045] The traceability of blockchain technology guarantees ownership of data.

[0046] The consensus algorithm and ledger features of the blockchain are used to reduce the malicious behavior of malicious nodes and improve the quality of data.

[0047] Leveraging the openness and transparency of blockchain provides a trusted trading environment.

[0048] The off-chain storage of IPFS greatly alleviates the pressure caused by on-chain stora...

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PUM

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Abstract

The invention discloses a social network information access sharing method based on a block chain, and solves the problems of privacy disclosure, unsafe user data access and low efficiency in the aspects of access control and data availability. The system generates a social relation graph SRG; the data owner encrypts and uploads the ciphertext; customizing an access control strategy; inputting an original request OAR, perfecting the OAR according to the information in the PIP, and generating an RAAR; performing strategy judgment, and returning a judgment result; and if the judgment result is' PERMIT ', the data visitor decrypts the ciphertext. Through the block chain technology, the information access process is open and transparent, and business faking and responsibility investigation are prevented. Hierarchical relationship access control is introduced on a traditional attribute-based access control model, and through the hierarchical relationship and attribute-based access control method, the social network information sharing process is optimized, the sharing efficiency is improved, secure sharing is realized, finer-grained authorized access is realized, and illegal use of data in the information sharing and access process is avoided.

Description

Technical field [0001] The present invention relates to the field of blockchain technology, in particular to a blockchain-based social network information access sharing method. Background [0002] With the rapid development of blockchain technology, the application of blockchain technology to all walks of life is the general trend. The traceability and non-repudiation of the blockchain can solve the problem of finding the source of the problem in the release of network information, realize the query of data sources and the accountability of false information; The decentralized blockchain does not require any trusted third party to realize direct transactions between the two parties to the transaction, realize data sharing between networks, and solve the problem of relying on centralized platforms in data sharing; Publish the information release and access process to the blockchain, so that the access release process is effectively supervised, open and transparent. [0003] In th...

Claims

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Application Information

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IPC IPC(8): G06F16/9536G06F21/60G06Q50/00H04L9/40
CPCG06F16/9536G06Q50/01G06F21/602G06F21/604H04L63/0442H04L63/10G06F2221/2141
Inventor 王冠帅聪
Owner BEIJING UNIV OF TECH
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