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Multi-service provider private data sharing system and method based on block chain

A privacy data and sharing system technology, applied in the field of multi-service provider privacy data sharing system, can solve the problem of inability to protect user privacy and joint search, and achieve the effect of ensuring reliability

Pending Publication Date: 2022-02-11
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a blockchain-based multi-service provider privacy data sharing system and method to solve the current technical problem that each service provider system is isolated from each other and cannot protect user privacy and jointly search

Method used

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  • Multi-service provider private data sharing system and method based on block chain
  • Multi-service provider private data sharing system and method based on block chain
  • Multi-service provider private data sharing system and method based on block chain

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Embodiment Construction

[0035] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] The present invention will be further explained below in combination with specific embodiments.

[0037] Such as figure 1 As shown, an overview of the architecture diagram of the system provided in this embodiment. As can be seen from the figure, the system includes three roles: key management agency, data user, and service provider.

[0038] Data users include information publishers and information retrievers. Since information publishers can also be data retrievers and data retrievers can also be in...

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Abstract

The invention provides a multi-service provider data sharing system with privacy protection based on a block chain. By introducing the block chain, the problem that different service providers need to depend on a trusted third party to share data is solved, a decentralized, reliable and safe trusted system is provided for the different service providers, and the different service providers can share own data onto the block chain trustingly. Meanwhile, a proxy re-encryption technology and bilinear mapping cryptography meta-language are deeply fused, a matchable data encryption algorithm supporting multiple users and multiple service providers and an on-chain protocol matched with data are constructed, and content matching in a ciphertext domain is achieved. The proxy re-encryption algorithm is improved, and the improved algorithm solves the problem of data security caused by the proxy re-encryption method.

Description

technical field [0001] The invention relates to the field of data encryption sharing and retrieval based on block chains, in particular to a multi-service provider privacy data sharing system with privacy data protection. Background technique [0002] At present, with the development of the Internet, various service providers such as real estate, crowdsourcing, and social networking provide bridges for Internet users, allowing users from all over the world to establish a huge network of relationships. To find matching resources, you often have to search for resources on multiple service provider systems, which causes a waste of resources. In addition, when users are looking for matching resources, they often involve private information, such as house location, task reward, age and other information, which users are unwilling to disclose, but in order to complete resource matching, users have to provide these information to service provider. At the same time, the protection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/27G06F21/60G06F21/62G06F16/2453
CPCG06F16/27G06F21/602G06F21/6245G06F16/2453
Inventor 李春晓郭宇谢宏程王胜灵王慎玲
Owner BEIJING NORMAL UNIVERSITY
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