Data query method and system, and readable storage medium

Abstract

A data query method and system, and a readable storage medium, the method comprises: sending a query request to a queryee to a queryee, and encrypting data to be queried by using a first encryption and decryption key; the queryee uses a second encryption The decryption key encrypts at least a part of the data in the database to obtain primary encrypted database data; the query party uses the first encryption and decryption key to perform secondary encryption on the received primary encrypted database data; The querying party uses the second encryption and decryption key to decrypt the secondary encrypted database data to obtain primary decrypted database data, and then calculates the intersection between the primary decrypted database data and the querying party's encrypted data data; the query party uses the first encryption / decryption key to perform secondary decryption on the intersection data to obtain a query result. The present invention can comprehensively and effectively protect the privacy information of both parties, and reduces the query cost.

Description

technical field [0001] The present invention relates to the field of computer technology, and in particular, to a data query method and system, and a readable storage medium. Background technique [0002] With the rapid development of Internet technology, the scale of data in all walks of life is showing an explosive growth trend, and the commercial value of data is also rising. However, limited by commercial interests or laws and regulations, it is currently difficult for most industrial units and institutions to conduct effective data exchanges, especially in related business exchanges involving user privacy information inquiries, the inquiring party is out of consideration for data security. The query content cannot be directly displayed to the queried party, and the queried party cannot display data unrelated to the query content to the queried party. [0003] For example, when a securities company provides services for new customers, it is often difficult for the compa...

AI Technical Summary

Problems solved by technology

However, limited by commercial interests or laws and regulations, it is currently difficult for most industrial units and institutions to conduct effective data exchange, especially in related business exchanges involving user privacy information inquiries, the inquiring party is out of consideration for data security It is impossible to directly display the query content to the queried party, and the queried party cannot display data unrelated to the query content to the querying party

[0003] For example, when a securities company provides services to new customers, it is often difficult for the company to judge the potential risks of providing a certain service due to the lack of past transaction information and records of the customer. It is often necessary to provide specific customer identity information, causing the company to leak customer privacy data

[0004] However, in the prior art, when it comes to user privacy information query, the privacy protection is poor and the query cost is high

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