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Blockchain data sharing method, system and device and medium

A data sharing and blockchain technology, applied in the blockchain field, can solve problems such as inability to restore original data and low storage pressure, and achieve the effects of shielding underlying details, simplifying models, and reducing access costs

Pending Publication Date: 2021-01-05
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This method can better protect the privacy of the original data, has less storage pressure, and can also achieve certain auditing and supervision functions, but the original data cannot be restored after the event.

Method used

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  • Blockchain data sharing method, system and device and medium
  • Blockchain data sharing method, system and device and medium

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Embodiment Construction

[0053]The present invention will be further explained and described below in conjunction with the accompanying drawings and specific embodiments of the description. For the step numbers in the embodiment of the present invention, it is only set for the convenience of explanation and description, and there is no limitation on the order of the steps. The execution order of each step in the embodiment can be carried out according to the understanding of those skilled in the art Adaptive adjustment.

[0054] Aiming at the problems existing in the prior art, the present invention provides an application system based on blockchain technology to realize data sharing and privacy protection, which uses cryptography technology to protect data privacy, uses distributed ledgers to promote data sharing, and improves operating efficiency.

[0055] see figure 1 , the data sharing method of the present invention includes 6 steps, namely organization registration, node initialization, data so...

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Abstract

The invention discloses a blockchain data sharing method, a system and a device and a medium. The method comprises the following steps: creating member institutions in a blockchain; according to the member institutions, carrying out initialization processing on blockchain nodes, and creating a data chain, a rule chain and an application chain in an alliance chain; standardizing a data source of the data institution, and auditing and registering a standardized processing result through the supervision institution; issuing metainformation and authority rules of a target data source to the blockchain through a first data institution, and adopting the supervision institution to confirm the target data source and then issues the target data source to the data chain; adopting a secret key encryption method to initiate a data request to the target data source by a second data institution, and obtaining the target data source; and determining evaluation information of the target data source bythe second data institution, and storing the evaluation information in the application chain. Data privacy can be protected, data sharing efficiency can be improved, and the method can be widely applied to the technical field of block chains.

Description

technical field [0001] The present invention relates to the field of block chain technology, in particular to a block chain data sharing method, system, device and medium. Background technique [0002] With the rapid development of Internet applications, information data is also growing explosively. User behavior data on the Internet implies a lot of privacy and is easy to be stolen and used for illegal commercial activities. In recent years, there have been frequent incidents of user data leakage. occurred, causing serious harm to individual users and society; on the other hand, modern enterprises and governments are increasingly aware of the value and importance of data, so they are more cautious in data storage, transmission, and sharing, and the openness of the system is weakened , resulting in a large number of isolated islands of information and reducing the efficiency of social operations. In general, on the one hand, it is necessary to protect the privacy of users, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/176G06F16/27G06F21/60G06F21/64
CPCG06F16/176G06F16/27G06F21/602G06F21/64
Inventor 余向阳张鑫
Owner SUN YAT SEN UNIV
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