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Blockchain transaction query method and system, computer equipment and storage medium

A query method and blockchain technology, applied in the fields of systems, blockchain transaction query methods, computer equipment and storage media, can solve problems such as privacy information leakage, and achieve the effect of strong privacy

Active Publication Date: 2020-12-15
HANGZHOU QULIAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For related technologies, there is no effective solution to the problem of disclosure of private information in transaction queries on the blockchain.

Method used

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  • Blockchain transaction query method and system, computer equipment and storage medium
  • Blockchain transaction query method and system, computer equipment and storage medium
  • Blockchain transaction query method and system, computer equipment and storage medium

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Embodiment Construction

[0042] In order to make the purpose, technical solutions and advantages of the application clearer, the application will be described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application. Based on the embodiments provided in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0043] Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application, and those skilled in the art can also apply the present application to other similar scenarios. In addition, it can also be understood that although such development efforts may be complex and lengthy, for those of ordinary skill in the art relevant to the co...

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PUM

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Abstract

The invention relates to a blockchain transaction query method and system, computer equipment and a storage medium. The method comprises the steps of encrypting an index value of each transaction in atransaction list according to a preset addition homomorphic random encryption algorithm, determining a query vector, setting the index value of a target query transaction to be non-zero and the indexvalues of other transactions to be zero, and after a query result is obtained, decrypting the query result by using a decryption algorithm corresponding to the addition homomorphic random encryptionalgorithm to obtain the transaction content of the target query transaction. By adopting the method, a blockchain platform party cannot deduce the query information, so that the privacy of the query information and the query result in the transaction query process on the blockchain is improved.

Description

technical field [0001] The present application relates to the technical field of blockchain, in particular to a blockchain transaction query method, system, computer equipment and storage medium. Background technique [0002] Transactions are the most basic data structure in the blockchain. The transaction list in the block is sorted by the consensus algorithm. The transaction and the content carried by the transaction contain a lot of valuable information, which constitutes the distributed structure of the blockchain. The content of the ledger and the query of transaction information are the most basic and commonly used operations in the blockchain. [0003] A chain built by multi-party business collaboration generally provides transaction query services. Users submit a query request to the query service provider to obtain a desired transaction, and the customer and the query service provider have no trust relationship. Privacy issues in this typical interaction scenario a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/08H04L9/08H04L9/00G06Q20/38G06Q40/04G06F21/64
CPCH04L63/04H04L9/008H04L9/0869H04L67/104G06Q20/3829G06Q40/04G06F21/64
Inventor 邱炜伟李伟蔡亮汪小益俞志斌
Owner HANGZHOU QULIAN TECH CO LTD