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Block chain-based transaction data privacy protection system

A privacy protection system and transaction data technology, applied in digital data protection, transmission systems, electronic digital data processing, etc., can solve the problems of high cost, lack of universality, and inconvenience, and achieve low cost and high matching efficiency. Effect

Active Publication Date: 2021-12-24
湖南宸瀚科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this system requires a separate storage node for users to store private data, which is not convenient enough, the cost is too high, and only members can enjoy it, so it is not universal

Method used

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  • Block chain-based transaction data privacy protection system
  • Block chain-based transaction data privacy protection system
  • Block chain-based transaction data privacy protection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a privacy protection system for transaction data based on block chain, combining figure 1 , including a verification service center and a fuzzy module, the fuzzy module is used to fuzzy the transaction data that needs to be recorded in the block chain, and the verification service center is used to help the transaction seller user and the buyer user The fuzzy transaction data in the process is restored to the original transaction data;

[0032] The process of the fuzzy processing is:

[0033] The seller’s user information in the transaction information is used as the first text, the buyer’s user information is used as the second text, and the remaining transaction information is used as the third text. The user's private key is processed to obtain a second key, processed according to the first key and the second key to obtain a third key, and the third key is used to encrypt the third text to obtain ciphertext, The ciphertext is recorded in th...

Embodiment 2

[0047] This embodiment includes all the content of Embodiment 1, combined with figure 2 , the system uses the seller user in the transaction information as the first text, the buyer user as the second text, and the remaining transaction information as the third text, and the first text is encrypted with the seller’s private key to obtain the first key, so The second text is encrypted with the buyer's private key to obtain a second key, the first key and the second key are encrypted with a fuzzy public key to obtain a third key, and the third key is used to pair the Encrypt the third text to obtain the transaction ciphertext, and record the ciphertext and the third key together in the block chain, and the ciphertext and the third key can be obtained by any user;

[0048] combine image 3 , after the seller user obtains the ciphertext and the third key, the ciphertext, the third key and the first key are sent to the verification service center, and the verification service cen...

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Abstract

The invention provides a blockchain-based transaction data privacy protection system, which comprises a verification service center and a fuzzy module, and is characterized in that the fuzzy module is used for carrying out fuzzy processing on transaction data needing to be recorded in a blockchain; the verification service center is used for helping a seller user and a buyer user of the transaction to restore the fuzzified transaction data in the block chain into original transaction data, the seller user provides a first key, the buyer user provides a second key, the first key and the second key are processed to obtain a third key, and the third key is sent to the server; processing the transaction data by using a third key to obtain a ciphertext, and submitting the first key or the second key to the verification service center by the seller user and the buyer user to obtain original information; the system can better protect transaction data from being looked up by the outside in the block chain, and has better privacy protection.

Description

technical field [0001] The present disclosure generally relates to the technical field of blockchain, and more specifically relates to a privacy protection system for transaction data based on blockchain. Background technique [0002] The blockchain realizes the decentralization of the ledger by recording the transaction data in the block. In the transaction data, the addresses are used to replace the accounts of both parties. The corresponding account is known, but the public can still know all the transaction data of a certain address by viewing the blockchain information, which does not have a protective effect on the specific amount and other information in the transaction issuance. The present invention blurs the transaction data to better protect privacy; [0003] Many blockchain protection systems have been developed. After a lot of searching and reference, we found that the existing protection systems are like the systems disclosed by the public numbers KR100950744B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/62G06F21/60H04L29/06H04L29/08
CPCG06F21/6245G06F21/602H04L63/0442H04L67/1097
Inventor 曹源汪大明邓罡来飞付宗波周忠宝曹宇陈磊曹恒曲波谢超良唐奕易江义陈军戴俨炯
Owner 湖南宸瀚科技有限公司
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