Block-chain-based fair data transaction method

A transaction method and blockchain technology, applied in the field of blockchain-based fair data transactions, can solve the problem of inability to solve a large number of data fair transactions, efficiency and fairness issues, and high computational complexity, achieving low storage costs and improving Efficient and computationally efficient

Pending Publication Date: 2017-09-15
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing technology, micropayments based on the Bitcoin blockchain, such as micropayment channels, lottery micropayments and other technologies, can solve the problem of transaction fairness to a certain extent, but none of them are used for data transactions, and they have efficiency and Questions of fairness
In the prior art, the private information fair transaction scheme based on blockchain

Method used

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  • Block-chain-based fair data transaction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0046] Blockchain-based fair data transaction methods, such as figure 1 shown, including the following steps:

[0047] (1) Prepare data: set data seller (Data Seller) S to sell 1000 pieces of data, including m 1 、m 2 … m i … m 1000 ; The two parties negotiated that each piece of data is worth 0.10 yuan, and the details of 1000 pieces of data are shown in Table 1:

[0048] Table 1

[0049]

[0050]

[0051] Data seller S generates a master key (Master Key) mk=ead57e206cef37881a434be6096347490d144345a05b8f93849ba1a5747a677; data seller S generates a subkey for each piece of data, data m 1 ,m 2 … m i … m 1000 The corresponding subkeys are k 1 ,k 2 …k i …k 1000 ; k i =SHA256(mk,r i ). r i is a random number, you can use r i =SHA256(i), i=1,2,...,1000;

[0052] The data seller generates a pair of public and private keys (pk s ,sk s ), pk S Used to receive fees.

[0053] Data sellers use k i to m i (i=1,2,...,1000) is encrypted with AES encryption algor...

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Abstract

The invention relates to a block-chain-based fair data transaction method. The method comprises: step A, a data seller encrypts each piece of data by using different secret keys; step B, a data buyer buys one or more secret keys each time by using a Hash chain micro-payment technique to decrypt corresponding data and carry out verification, and repeated multi-times exchange is carried out until the transaction is completed; and step C, the data seller uses an obtained latest hash value to delock data purchasing expenses trusted at a block chain to obtain deserved data purchasing expenses and the remaining sum is returned to the data buyer in a forced manner. Therefore, on the basis of combination of block-chain-based encrypted currency with the hash chain micro payment technique, a fair data transaction is realized. Moreover, with the method, a problem that the lots of data bought by one time do not meet the requirement can be solved.

Description

technical field [0001] The invention relates to a blockchain-based fair data transaction method, and belongs to the technical field of blockchains. Background technique [0002] Thanks to the advancement of information and communication technology, data is generated at an unprecedented speed. After in-depth analysis and mining, a large amount of data is applied to finance, insurance, health care, e-commerce, government affairs management and other fields. The huge value of big data has been widely recognized. consensus. However, the value of data can only be realized if it is fully shared. At present, there is an "island dilemma" in big data. Government and enterprise data are not shared, big data platforms are isolated from each other, and users are reluctant to share data because of privacy concerns. At present, the government is vigorously promoting data sharing to solve the problem of data islands. [0003] Current data trading solutions are generally based on central...

Claims

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Application Information

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IPC IPC(8): G06Q20/38H04L9/08H04L9/28H04L9/32
CPCG06Q20/38215G06Q20/3829H04L9/0863H04L9/3236
Inventor 万志国
Owner SHANDONG UNIV
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