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A single inadvertent anti-link query system and method for encrypted data

A technology for encrypting data and data, applied in digital transmission systems, transmission systems, secure communication devices, etc., to achieve the effects of low-overhead communication, privacy protection, and low computing costs

Active Publication Date: 2022-03-22
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the shortcomings of the above-mentioned existing technologies, the present invention proposes a single inadvertent anti-link query system and method for encrypted data, in order to resist untrustworthy data cloud during the query process of encrypted data on the cloud. The security threat of the storage party, and solve the item exclusion problem, so as to protect the privacy of the data requester and ensure the life and property safety of the data requester

Method used

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  • A single inadvertent anti-link query system and method for encrypted data
  • A single inadvertent anti-link query system and method for encrypted data
  • A single inadvertent anti-link query system and method for encrypted data

Examples

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Embodiment Construction

[0042] In this embodiment, a typical secure K-nearest neighbor query processing is as follows figure 1 As shown, the data upload module encrypts data and calculates the security index and uploads it to the data cloud storage module, and the data request module sends a secure K-nearest neighbor query to the data cloud storage module and obtains the returned result;

[0043] In this embodiment, a single inadvertent link-resistant query system for encrypted data, such as figure 2 As shown, it includes multiple data upload modules, multiple data request modules and a data cloud storage module;

[0044] Taking the query processing of dense data on the cloud in a car-hailing service as an example, the data upload module is the driver who provides the car-hailing service, the data request module is the passenger who needs to use the car-hailing service, and the data cloud storage module is the third-party platform , the passenger submits his location to the third-party platform, an...

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Abstract

The invention discloses a single inadvertent link-resistant query system and method for encrypted data, which is applied in a network environment composed of multiple data upload modules, multiple data request modules and a data cloud storage module; The data upload module calculates the security index of the data, and uploads the encrypted data to the data cloud storage module and shares the key with some data upload modules; the data request module generates a query token, submits the token to the data cloud storage module, and waits for the data Decrypt the matching data after sending it back, otherwise wait for valid data; the data cloud storage module receives the security index and encrypted data from the data upload module, receives the token from the data request module, uses the token to search the security index and returns the query result, otherwise returns null value. The invention can protect the privacy of the data requesting party from infringement by untrustworthy data cloud storage parties.

Description

technical field [0001] The invention relates to a single inadvertent link-resistant query system and method for encrypted data, belonging to the technical fields of privacy protection, cloud service and encrypted data query. Background technique [0002] In the context that most smartphones are equipped with GPS devices, mobile applications on smartphones can provide location-based services by sending the current location and geospatial queries of data requesters to data cloud storage parties (such as cloud database servers). . The data cloud storage party searches its database according to the data submitted by the data uploader, and then returns the query results to the user. [0003] Data cloud storage parties often store their geospatial data in public cloud storage services to achieve lower maintenance costs, lower response delays, and greater flexibility. Privacy is a critical issue since public cloud storage services are not fully trusted. Therefore, it is critical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/40
CPCH04L63/1441H04L63/0428H04L63/0807
Inventor 李萌陈毅飞
Owner HEFEI UNIV OF TECH
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