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Data query method and device based on block chain network, and electronic equipment

A technology of data query and block chain, which is applied in the field of electronic equipment, data query method and device based on block chain network, can solve problems such as inability to guarantee data security, and achieve the effect of strengthening data security

Pending Publication Date: 2022-08-09
INDUSTRIAL AND COMMERCIAL BANK OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a data query method, device, and electronic equipment based on a blockchain network, so as to at least solve the technical problem in related technologies that financial institutions cannot guarantee data security when querying customer information

Method used

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  • Data query method and device based on block chain network, and electronic equipment
  • Data query method and device based on block chain network, and electronic equipment
  • Data query method and device based on block chain network, and electronic equipment

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0056] According to an embodiment of the present invention, an embodiment of a data query method based on a blockchain network is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings may be implemented in a computer system such as a set of computer-executable instructions. and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that herein.

[0057] The embodiment of the present invention provides a data query method based on a blockchain network, which is applied to a data blockchain node in a blockchain network, and a link relationship has been established between the data blockchain node and the query end node in advance.

[0058] The data blockchain node involved in this embodiment may be a blockchain node loaded with an offline preload component, that is, a data blockchain node in a blockchain network is deployed with an offline preload compon...

Embodiment 2

[0148] The embodiment of the present invention provides a data query method based on a blockchain network, which is applied to a data blockchain node in a blockchain network, and a link relationship has been established between the data blockchain node and the query end node in advance.

[0149] The data blockchain nodes involved in this embodiment may be blockchain nodes loaded with online preload components, that is, the data blockchain nodes in the blockchain network are deployed with online preload components, and the online preload components are connected to each other. The second privacy database of the data server.

[0150] The second privacy database in the embodiment of the present invention stores the off-chain privacy data, including the queryable privacy data of the service party, the query preloaded privacy data of the query party, the encryption key, and the like. This part of the data is private domain isolated data, inaccessible to the outside world, and monit...

Embodiment 3

[0176] This embodiment provides a data query device based on a blockchain network, and each implementation unit included in the data query device corresponds to each implementation step in the above-mentioned first embodiment.

[0177] A data query device based on a blockchain network provided in this embodiment is applied to a data blockchain node in a blockchain network, and a link relationship has been established between the data blockchain node and the query end node in advance.

[0178] The data blockchain node involved in this embodiment may be a blockchain node loaded with an offline preload component, that is, a data blockchain node in a blockchain network is deployed with an offline preload component, and the offline preload component is docked The first privacy database of the data server.

[0179] The privacy database in the embodiment of the present invention mainly stores off-chain privacy data, including queryable privacy data of the service party, query preload...

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Abstract

The invention discloses a block chain network-based data query method and apparatus, and an electronic device. The method comprises the following steps: receiving a data query request initiated by a query end node; in response to the data query request, obtaining target data from a privacy database of a data server, and performing statistical calculation on the target data to be queried by adopting a contract code in a pre-configured hidden trace query smart contract to obtain a data statistical result, data stored in the privacy database being private domain isolation data; encrypting the data statistical result by adopting a public key of the query end node, and synchronizing the encrypted data statistical result to the query end node; and under the condition of confirming that all the data statistical results are synchronized to the query end node, cleaning the data statistical results in the data block chain node. The technical problem that the data security cannot be ensured when a financial institution inquires customer information in the related technology is solved.

Description

technical field [0001] The present invention relates to the technical field of blockchain, in particular, to a data query method and device based on a blockchain network, and electronic equipment. Background technique [0002] In related technologies, when financial institutions inquire about rating information, credit information, product sales information, and actual resource usage information (for example, actual electricity consumption statistics) of corporate financing customers, most of the query techniques used are based on inadvertent transmission, through MD5 ha. Technologies such as bucketing or data obfuscation enhance the security of anonymous queries. At the same time, in order to solve the problem of large data volume queries, optimization methods of 2 / 4 / 8 server will be adopted. [0003] In addition, the existing query methods can only perform queries, but cannot perform statistical calculations on query results. To perform statistical calculations on query re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/2457G06F16/2458G06F16/27G06F21/60G06F21/62
CPCG06F16/24573G06F16/2462G06F16/27G06F21/602G06F21/6245Y02D10/00
Inventor 陈晓蕊苏恒林嘉文刘彦平
Owner INDUSTRIAL AND COMMERCIAL BANK OF CHINA