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Data transaction and right confirmation method based on block chain

A blockchain and data technology, applied in digital data protection, data processing applications, buying and selling/lease transactions, etc., can solve problems such as right confirmation and data privacy, and achieve the effect of alleviating the risk of single point of failure

Active Publication Date: 2021-06-25
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although data transactions have accelerated the sharing and circulation of data to a certain extent, there are still issues of data privacy, confirmation of rights, and trust between both parties in the process of data transactions.

Method used

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  • Data transaction and right confirmation method based on block chain
  • Data transaction and right confirmation method based on block chain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: as figure 1 As shown, a blockchain-based data transaction and a method for confirming rights, the specific steps of the method are as follows:

[0034] Step1: The data seller chooses to sell the right to use the data. Use the digital watermarking technology to add an invisible watermark to the data. The digital watermark contains the information of the data seller, the scope of data usage, etc., and then uses the SM3 algorithm to hash the data to obtain the hash Hash value, the data seller chooses to sell the ownership right of the data and uses the SM3 algorithm to hash the original data to obtain the hash value. Then use the SM4 algorithm to encrypt the data to be sold to obtain the first ciphertext, upload the first ciphertext to the IPFS file system, and the data seller obtains the storage address of the first ciphertext in the IPFS file system.

[0035] Step2: Data sellers and data buyers publish transaction requirements to the blockchain data transa...

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Abstract

The invention relates to a data transaction and right confirmation method based on a block chain, and belongs to the technical field of block chains. The invention provides a data transaction and right confirmation method realized by using a block chain technology and a digital watermarking technology; a data buyer and a data seller publish transaction demands to a block chain platform, and a system performs transaction recommendation on the data buyer and the data seller according to the demands published by the data buyer and the data seller; when the two transaction parties conclude the transaction intention, asset transfer is completed through an intelligent contract; in order to better determine the ownership of the data, the data is marked by using a digital watermarking technology, and when a data dispute occurs, the mark of the data can be extracted and the transaction record can be traced to make right confirmation. Compared with the prior art, the scheme of carrying out data transaction by utilizing the block chain technology is provided, the problem of single-point attack of a centralized platform is relieved, the characteristics of non-tampering and traceability of data transaction information are realized, and meanwhile, the digital watermarking technology is introduced, so that right confirmation of dispute data is facilitated.

Description

technical field [0001] The invention relates to a block chain-based data transaction and a method for confirming rights, and belongs to the technical field of block chains. Background technique [0002] In the current big data era, the ability to process and use big data is crucial. By analyzing massive data and extracting key information, it can provide decision-making support for individual enterprises. The value of big data has been widely recognized. In order to conduct better data analysis, it is necessary to obtain data support from more fields, so big data transactions have begun to develop rapidly. Although data transactions have accelerated the sharing and circulation of data to a certain extent, there are still issues of data privacy, confirmation of rights, and trust between both parties in the process of data transactions. [0003] Blockchain is a chain structure in which blocks are connected sequentially in chronological order. It uses cryptography to ensure th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q20/12G06Q30/06G06F21/16G06F21/62G06F21/64G06F21/60G06F16/182
CPCG06Q20/1235G06Q30/0631G06Q30/0635G06F21/16G06F21/6218G06F21/602G06F21/64G06F16/1837G06F2221/2107G06F21/1063
Inventor 沈韬葛纪红柏粉花刘英莉
Owner KUNMING UNIV OF SCI & TECH
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