Private data comparison method and system

A technology of private data and comparison results, applied in the field of data comparison, can solve the problems of data privacy leakage, data opacity, etc., and achieve the effect of privacy protection

Pending Publication Date: 2021-04-30
北京链飞未来科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of party data privacy leakage and data comparison process opacity during data comparison, this application provides a private data comparison method and system

Method used

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  • Private data comparison method and system
  • Private data comparison method and system
  • Private data comparison method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0062] refer to figure 1 , as an implementation of a private data comparison method, a private data comparison method deploys the same blockchain node for each participant, and different blockchain nodes form a blockchain network; each of the The blockchain nodes include ledgers and smart contracts based on blockchain storage; each participant stores the first public key, the second vector, and the comparison result into the ledger by calling the smart contract corresponding to the blockchain node Or query the first public key, the second vector and the comparison result on the chain from the account book, so that the blockchain nodes of each participant are completely consistent. The method applied to a participant terminal or a participant server comprises the following steps:

[0063] Step S100, each participant calculates the first public key according to the private key, and stores the first public key on chain into the ledger by calling the first public key chaining met...

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Abstract

The invention relates to a private data comparison method and system, and the system comprises a server comprising participants, and a blockchain node correspondingly deployed for each participant, wherein different blockchain nodes form a blockchain network; each blockchain node comprises an account book and an intelligent contract which are stored based on a blockchain; the server of each participant uplinks the first public key, the second vector and the comparison result into an account book corresponding to the blockchain by calling the intelligent contract corresponding to the blockchain node, and broadcasts hash values of uplink transactions to the servers of the other participants; or queries the first public key, the second vector and the comparison result on the account book query chain corresponding to the blockchain. Private data privacy of two comparison parties can be protected, the intermediate process and the comparison result can be inquired according to the uplink hash, and the process is more transparent.

Description

technical field [0001] The present application relates to the field of data comparison technology, in particular to a private data comparison method and system. Background technique [0002] At present, there are many occasions for data size comparison; the commonly used data comparison schemes include that both parties of the data comparison hand over the data to a third party recognized by both parties, and the third party performs the data comparison; or, the two parties of the data comparison first encrypt the data, Then the data comparison parties exchange data to complete the comparison. However, these data comparison schemes have the following disadvantages: [0003] (1) The private data of the data comparison party cannot be protected by privacy, and there is a great risk of data leakage; the receiver has the encrypted data private key, and the plaintext of the private data of the data comparison party will be seen by other parties except itself. The risk of plaint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q20/38G06F21/60G06F21/62G06F21/64
CPCG06F21/602G06F21/6245G06F21/64G06Q20/3827G06Q20/3829
Inventor 石显锋
Owner 北京链飞未来科技有限公司
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