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Personalized position privacy protection method based on position k-anonymization

A privacy protection and privacy technology, applied in the privacy protection field of network information security, can solve the problems of inability to achieve k-anonymity, vulnerable to reverse attacks, etc., achieve powerful computing and storage capabilities, improve security, and improve the effect of service quality

Active Publication Date: 2018-09-28
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

If only the anonymous area with the largest information entropy is selected, once the attacker obtains the historical access probability data, it is vulnerable to reverse attacks, so the attacker can exclude some irrelevant user locations in the anonymous area based on the obtained data, and cannot achieve an effective k- anonymous

Method used

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  • Personalized position privacy protection method based on position k-anonymization
  • Personalized position privacy protection method based on position k-anonymization
  • Personalized position privacy protection method based on position k-anonymization

Examples

Experimental program
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Embodiment

[0041] The present invention adopts a system framework of multiple anonymous servers to cooperate, solves the semi-trusted problem of third-party anonymous servers, realizes the security protection of user location privacy and improves service quality, and uses the specific implementation method to describe the specific process of the present invention in detail below.

[0042] Please refer to figure 1 and figure 2 , a personalized location privacy protection method based on location k-anonymity, including the following steps:

[0043]S1. System initialization. The LBS server grids the map space to form grid units of the same size. Each grid unit has at least one location point that is less sensitive to the user's real location.

[0044] S2. Generate a user query request Q according to the user's privacy requirements u ,

[0045] The specific process includes the following sub-steps:

[0046] S2-1. Query users First, generate the privacy requirements of the user's locatio...

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Abstract

The invention provides a personalized position privacy protection method based on the position k-anonymization. The method comprises the following steps: initializing a system; generating a user inquiry request Qu according to the privacy requirements of a user; dividing the Qu into a plurality of data segments, and sending the data segments and the position identification data of the user to a plurality of anonymous servers respectively; randomly selecting one anonymous server to obtain data segments located in other anonymous servers according to the position identification data of the userso as to obtain complete data Qu, and then generating an anonymous inquiry request according to the Qu; sending the anonymous inquiry request to an LBS service provider by the selected anonymous server; searching to obtain an inquiry result by the LBS service provider and sending the result to the selected anonymous server; sending an accurate result by the selected anonymous server and returningthe accurate result to the inquiry user according to the real position of the user. According to the method, a system framework cooperating with a plurality of anonymous servers is adopted, and the problem that a third-party anonymous server is semi-trusted in the prior art is solved. The safety of user position privacy and the service quality of the user position inquiry are greatly improved.

Description

technical field [0001] The invention relates to the technical field of privacy protection of network information security, in particular to a personalized location privacy protection method based on location k-anonymity. Background technique [0002] Due to the rapid development of mobile communications and the popularity of smart products such as mobile phones and tablet computers, location-based services (LBS location-based Service) are becoming more and more popular in social networks. The location-based service means that the mobile terminal obtains its current location by using various positioning technologies, and obtains services related to the user's location. While location service brings great convenience to life, it also brings potential danger to users' personal privacy. The LBS server has all the information of the user, including the user's location information and query content. The location information includes location coordinates, social semantics, health ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04W4/02H04W4/021
CPCH04W4/021H04W4/025H04L67/1001H04L67/52
Inventor 凌捷李灵利谢锐柳毅
Owner GUANGDONG UNIV OF TECH
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