Block chain data sharing encryption and decryption method and system

A data sharing and blockchain technology, applied in the blockchain field, can solve problems such as user privacy leakage and theft of assets

Inactive Publication Date: 2021-02-09
汪秀英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But mixing services may steal assets by not transferring assets to recipients of cluster analysis
In order to complete the routing transaction, the hybrid server will save the log records within a certain period of time, so the user's privacy may be at risk of leakage

Method used

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  • Block chain data sharing encryption and decryption method and system
  • Block chain data sharing encryption and decryption method and system
  • Block chain data sharing encryption and decryption method and system

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Embodiment Construction

[0069] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0070] By using the new data exploration algorithm to explore new data in the data to be encrypted, and convert the data to be encrypted into a data vector to be encrypted, and construct a keyword index structure of the data to store the data vector to be encrypted, using the improved Byzantine fault tolerance algorithm The blockchain encrypts the keyword index structure, and at the same time uses the group signature algorithm to realize the sharing of encrypted data and the decryption of encrypted data. refer to figure 1 As shown, it is a schematic diagram of a block chain data sharing encryption and decryption method provided by an embodiment of the present invention.

[0071] In this embodiment, the blockchain data sharing encryption and decryption methods include:

[0072] S1. Obtain the data to be encrypted, us...

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Abstract

The invention relates to the technical field of block chains, and discloses a block chain data sharing encryption and decryption method, which comprises the steps of obtaining to-be-encrypted data, exploring new data in the to-be-encrypted data by utilizing a new data exploration algorithm, and converting the to-be-encrypted data into a to-be-encrypted data vector; constructing a keyword index structure of to-be-encrypted data, and storing the to-be-encrypted data vector in the keyword index structure; encrypting the keyword index structure by using a block chain based on an improved Byzantinefault-tolerant algorithm to obtain encrypted data; sharing the encrypted data and decrypting the encrypted data by using a group signature algorithm; and packaging the transaction proposal of which data decryption is completed by using a transaction sorting-based block packaging algorithm, and submitting a packaging result to a block chain account book. The invention further provides a block chain data sharing encryption and decryption system. According to the invention, encryption and decryption of the blockchain data are realized.

Description

technical field [0001] The present invention relates to the technical field of block chains, in particular to a block chain data sharing encryption and decryption method and system. Background technique [0002] With the development of electronic information technology, the contradiction between the demand for data sharing and data security has become more and more prominent. How to realize data sharing under the premise of ensuring that the data is not tampered with or leaked is called an urgent problem to be solved. [0003] The data on the traditional blockchain is open to the nodes of the entire network, and the update operation of the data records is also transparent, which may lead to the leakage of user information. In the blockchain, there is a link between the sender and receiver of the transaction, so by analyzing the public content, some private content can be inferred. One of the solutions used to mitigate this attack is to introduce hybrid services, which allow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/62G06F21/64G06F16/176G06F40/284G06Q40/04
CPCG06F21/6227G06F21/64G06F2221/2107G06Q40/04G06F16/176G06F40/284
Inventor 汪秀英
Owner 汪秀英
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