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Position privacy protection method combining k-anonymity and cloud end

A privacy protection and combination technology, applied in the field of location-based services and security privacy, can solve problems such as user privacy threats, protect location privacy, reduce the accuracy of publishing location messages, and achieve simple effects

Active Publication Date: 2015-06-17
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improper use of location data will pose a serious threat to the privacy of users in all aspects

Method used

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  • Position privacy protection method combining k-anonymity and cloud end
  • Position privacy protection method combining k-anonymity and cloud end
  • Position privacy protection method combining k-anonymity and cloud end

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] We use the six-tuple form q=(id, loc, time, qry, k, s) to represent the user's request message, where id is the id of the requesting user; loc is in the form of (x, y), indicating that the user sent The position when querying, x indicates the longitude of the position, y indicates the latitude of the position; time is the time when the request is sent; qry is the query content of the request; k indicates the anonymous parameter specified by the user; s indicates the anonymous area specified by the user.

[0022] Step 1. Send a request,

[0023] User U id If you want to check which bars are...

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Abstract

The invention discloses a position privacy protection method combining k-anonymity and the cloud end. The method is based on position k-anonymity, the cloud end technology is adopted, and by means of a large number of data of the cloud end, it is guaranteed that the situation that anonymity of an anonymous server fails due to the fact that the k value is not reaches is avoided. The method is simple and easy to achieve, distribution position information precision does not need to be reduced while mobile user position privacy is protected, and a user obtains satisfying position service. Even if the anonymous server is attacked by an attacker, the attacker only obtains useless or false information stored at the cloud end and can not obtain real information of the user, and position privacy of the user is further protected.

Description

technical field [0001] The invention relates to the technical field of location-based services and security privacy, in particular to a location privacy protection method combining k-anonymity and cloud. Background technique [0002] Location-based service refers to the use of certain positioning technology to provide mobile users with personalized services related to their current location. It requires users to provide their own location information to the location-based server when making a service request to the location-based server. The LBS server processes the location-based query proposed by the user according to the location information provided by the user and returns the query result to the user. When a mobile user makes a service request to the server, the user obtains his location information through the positioning device and sends it to the LBS server, and the LBS server processes the user's service request according to the received location information. Since...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/06H04W4/02
CPCH04L63/0421H04W4/025
Inventor 黄海平秦宇翔吴敏沙超王汝传李艳宫天何杜建澎
Owner NANJING UNIV OF POSTS & TELECOMM
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