Block chain data sharing method and device

A data sharing and blockchain technology, applied in the field of financial technology, can solve the problems of inability to recover ciphertext, inability to share data, control the authority of data sharing, etc., to achieve the effect of data sharing, effective user privacy, and reducing storage pressure.

Active Publication Date: 2019-09-10
WEBANK (CHINA)
View PDF5 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the data in the above scheme is not really stored on the blockchain, and it is impossible to share data and control the authority of data sharing on the blockchain, but only store the verification data; it is impossible to restore the ciphertext from the blockchain to plaintext

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Block chain data sharing method and device
  • Block chain data sharing method and device
  • Block chain data sharing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0069] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than 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.

[0070] figure 1 It exemplarily shows a system architecture applicable to the embodiment of the present invention, and the system architecture may include multiple sharing institutions 100 and a blockchain system 200 . The blockchain system 200 is a consortium chain built by multiple sharing institutions 100, and the consortium chain may include one or more blockchain nodes, so that the data within the institution can be more active.

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the field of financial technology. The invention further discloses a block chain data sharing method and device. The method comprises the steps that a sharing mechanism obtains a first file, determines a hash value of the first file, determines an exchange public key corresponding to the first file, and the exchange public keys of the plurality of first sharing mechanismsare obtained, an encryption key is determined according to the exchange public key corresponding to the first file and the exchange public keys of the plurality of first sharing mechanisms, the firstfile is encrypted by using the encryption key to obtain an encrypted ciphertext of the first file, and the encrypted ciphertext is sent to the data sharing smart contract of the block chain. Due to the fact that the exchange public key corresponding to the first file is obtained through the private key and the index number of the sharing mechanism, different exchange keys can be generated for different files under the condition that the private key of the sharing mechanism is not changed, and user privacy can be protected flexibly, conveniently, safely and effectively. And the encrypted file is sent to the block chain, so that real chaining of the encrypted file is realized, and real data sharing is realized.

Description

technical field [0001] Embodiments of the present invention relate to the field of financial technology (Fintech), and in particular to a blockchain (BlockChain) data sharing method and device. Background technique [0002] With the development of computer technology, more and more technologies are applied in the financial field. The traditional financial industry is gradually transforming into financial technology (Finteh), and blockchain technology is no exception. However, due to the security and real-time requirements of the financial industry , but also higher requirements for technology. [0003] The existing blockchain system does not directly send encrypted data to the blockchain, but only uploads the Hash (hash) result of the plaintext data to the chain to achieve a certain tamper-proof and verifiable effect; the specific process is as follows : Encrypt the plaintext data using the Hash algorithm (commonly used but not limited to the SHA-2 algorithm), store the has...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/06H04L29/06H04L29/08
CPCH04L9/0643H04L63/0442H04L67/1097
Inventor 毛嘉宇范瑞彬张开翔张龙
Owner WEBANK (CHINA)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap