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Data management method and device applied to block chain

A data management and blockchain technology, applied in the computer field, can solve problems such as the inability to guarantee the correctness of data and the lack of fairness in the transaction process.

Active Publication Date: 2020-07-10
CCB FINTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the embodiment of the present invention provides a data management method and device applied to the blockchain, which can at least solve the problems in the prior art that the correctness of data cannot be guaranteed and the transaction process lacks fairness

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  • Data management method and device applied to block chain
  • Data management method and device applied to block chain
  • Data management method and device applied to block chain

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Embodiment Construction

[0080] Exemplary embodiments of the present invention are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present invention to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

[0081] For the words involved in the present invention, explain as follows:

[0082] Blockchain: From a technical point of view, it involves many scientific and technical issues such as mathematics, cryptography, the Internet and computer programming. From the perspective of application, it is a distributed shared ledger and database, which has the characteristics of dece...

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PUM

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Abstract

The invention discloses a data management method and device applied to a block chain, and relates to the technical field of computers. A specific embodiment of the method comprises the steps of receiving a hash value transmitted by a first client through a smart contract; receiving a purchase request for the target data transmitted by the second client, obtaining the public key of the second client and transmitting the public key to the first client, and then receiving a ciphertext fed back by the first client; and transmitting the ciphertext and the hash value to the second client so as to perform preset corresponding operation based on a comparison result fed back by the second client after the second client performs data decryption and comparison. According to the embodiment of the invention, a set of complete thought of carrying out data fair transaction through the blockchain is provided; ans through an asymmetric encryption technology and a constraint mechanism adopted for two transaction parties, the problem that data correctness and data privacy cannot be guaranteed during data transaction (exchange) in a blockchain is successfully solved, and reasonable rights and interests of the two data transaction parties are guaranteed.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a data management method and device applied to blockchain. Background technique [0002] In the blockchain network, users (blockchain participants) can exchange data and communication (equity) through smart contracts. This exchange is essentially data buying and selling. The buyer pays for the token, the seller provides the data to the buyer, and the buyer obtains the corresponding token after obtaining the data. [0003] Currently on the market, buyers and sellers usually complete data interaction and token deduction by calling relevant smart contracts. The traded data is directly stored on the blockchain by the provider, and the buyer also directly obtains the sales data from the blockchain. The transaction content on the blockchain is stored in the block and is visible to all participants. As long as the buyer receives the data, the tokens of both buyers and seller...

Claims

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Application Information

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IPC IPC(8): G06Q20/38H04L9/06H04L9/08G06F16/27G06F21/60
CPCG06Q20/3827G06Q20/3829G06F21/602H04L9/0825H04L9/0643G06F16/27
Inventor 洪蜀宁黄发培熊潇刘俊杰胡伟雷刚余昌龙邹浩李诗寰彭聪庄磊王雪钱程尹涛
Owner CCB FINTECH CO LTD
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