Location privacy protection method based on the cloud server

A cloud server and privacy protection technology, applied in location-based services, digital data protection, electrical components, etc., to protect data privacy, reduce communication costs, and protect location privacy

Active Publication Date: 2017-11-14
ANHUI UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In the era of big data, the excessive storage of data se

Method used

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  • Location privacy protection method based on the cloud server
  • Location privacy protection method based on the cloud server
  • Location privacy protection method based on the cloud server

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Experimental program
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Embodiment Construction

[0034] The technical solution of the present invention will be described in detail below with reference to the drawings and embodiments, but the protection scope of the present invention is not limited to the embodiments.

[0035] Such as figure 1 As shown, in this embodiment, a cloud server-based location privacy protection method is applied to a distributed network environment composed of several mobile users, a data service provider, and a cloud server, and the network environment is located on the same map In the area, its specific physical model is as figure 1Shown: ① mobile user U. The characteristic is that the service can be obtained according to the location and can be moved; ② data service provider SP. The entire system is initialized, and as the data owner, it can provide mobile users with diversified services based on location. The organization is semi-trusted. ③Cloud server CS. The data service provider SP stores data on the CS through payment or delivery, and...

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Abstract

The invention discloses a location privacy protection method based on a cloud server. The method is characterized in that a cloud server, a data service provider and a number of mobile users exist; the data service provider defines a data format uniformly, carries out data segmentation and encryption, stores data into the cloud server, and secretly stores a decryption key; a user obtains an encrypted data block from the cloud server at a position of the user, the data service provider transmits the decryption key to the user according to an oblivious transfer protocol, and finally the user carries out decryption to obtain plaintext block data. The position information of the user is not exposed in a whole process, and thus the protection of position privacy is realized. According to the method, a problem of data privacy and position privacy protection based on position service can be effectively solved, at the same time, the storage cost, calculation cost and communication cost of the data service provider are reduced, and thus the system overhead is reduced while the user privacy is protected.

Description

technical field [0001] The invention relates to the technical field of data encryption and location privacy protection, in particular to a privacy protection method suitable for protecting mobile user location privacy and data confidentiality in a mobile network. Background technique [0002] In location-based data services, users request services based on their location. Users hope to obtain services without disclosing sensitive private information, such as location information. Location-based services (Location-based Services, LBS for short) privacy protection technologies mainly include: location anonymity technology, data encryption technology, and the like. [0003] Location anonymity technology focuses on separating the user's private information, such as location information, from the user's real information. Common location anonymization techniques include pseudonym anonymity, location k anonymity, space anonymity, etc. (1) Pseudonym anonymity refers to hiding the ...

Claims

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Application Information

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IPC IPC(8): H04L29/08G06F21/60G06F21/62H04L29/06H04W4/02
Inventor 石润华邓云霞李莉张顺
Owner ANHUI UNIVERSITY
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