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Private information retrieval method and device, equipment and storage medium

A technology for private information and data retrieval, which is applied in the security field and can solve the problems of low efficiency of private information retrieval

Pending Publication Date: 2021-09-10
招商局金融科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a private information retrieval method, device, equipment and storage medium, the main purpose of which is to solve the problem of low efficiency of private information retrieval

Method used

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  • Private information retrieval method and device, equipment and storage medium
  • Private information retrieval method and device, equipment and storage medium
  • Private information retrieval method and device, equipment and storage medium

Examples

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Embodiment Construction

[0042] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0043] An embodiment of the present application provides a private information retrieval method. The execution subject of the private information retrieval method includes but is not limited to at least one of electronic devices such as a server and a terminal that can be configured to execute the method provided by the embodiment of the present application. In other words, the private information retrieval method can be executed by software or hardware installed on the terminal device or server device, and the software can be a block chain platform. The server includes, but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, and the like.

[0044] refer to figure 1 As shown, it is a schematic flowchart of the private information retrieval method provided by the first meth...

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Abstract

The invention relates to the technical field of security, and discloses a private information retrieval method, which comprises the steps of establishing secret communication with a server side, negotiating a query data block with the server side when the secret communication is successfully established, performing request segmentation on a data query request triggered by a user based on a secret sharing protocol of the secret communication, and obtaining a data query vector, sending the data query vector to the server side, receiving target retrieval data retrieved from the query data block by the server side based on the data query vector, and performing data recovery on the target retrieval data by using the secret sharing protocol to obtain query data. The invention further provides a private information retrieval device, electronic equipment and a computer readable storage medium. The problem that the private information retrieval efficiency is low can be solved.

Description

technical field [0001] The present invention relates to the field of security technology, in particular to a private information retrieval method, device, electronic equipment and computer-readable storage medium. Background technique [0002] Private Information Retrieval (PIR) means that when users search the database, they hide their identity information from the database server, so as to protect the user's private information from being leaked. As an important branch of secure multi-party computation, the problem of private information retrieval has been widely used in many fields such as business competition and military cooperation (patent database query, stock database query, online transaction of digital products, cloud computing, etc.). [0003] In the prior art, the PIR protocol or the PIR model is widely used for private information retrieval, but both require the server and the client to have strong computing power to complete the information retrieval, resulting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/62G06F21/60G06F16/25
CPCG06F21/6245G06F21/6227G06F21/606G06F16/256G06F2221/2107
Inventor 戴露萍晏存陈海涛李福宇高宏
Owner 招商局金融科技有限公司
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