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Anonymous area construction method based on query scope

A Constructing Method, Querying Scope Technology

Active Publication Date: 2019-12-10
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for constructing an anonymous area based on a query range, aiming to solve the problem that the existing K-anonymous method has too large an anonymous area and lower service quality

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  • Anonymous area construction method based on query scope
  • Anonymous area construction method based on query scope
  • Anonymous area construction method based on query scope

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Embodiment Construction

[0028] In order to make the purpose, technical method and advantages of the present invention clearer, the present invention will be further described in detail below.

[0029] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] refer to figure 1 , the use scenario of the present invention is a K-anonymous centralized system, including three parts of user, anonymous server and service provider LSP, which is mainly used for location-based service LBS, and the working principle of the system is as follows:

[0031] Assuming that there is a secure communication channel between the user and the anonymous server, when the user queries nearby POIs, the query request q= will be passed through the secure channel first. Channels are sent to trusted anonymous servers. Among them, ID represents the identity of the user; L (x, y) represents the position coordinates of the user; r represents the quer...

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Abstract

The invention discloses a method for constructing an anonymous area based on a query range, which mainly solves the problem that the existing K-anonymous technology has an excessively large anonymous area in location-based services, resulting in a decrease in service quality. The process is as follows: 1) through The anonymous server generates a sub-anonymous area set CS that meets the user's privacy protection requirements; 2) Update the sub-anonymous area set CS based on the query area of ​​the service provider; 3) Repeat step 2 until the sub-anonymous area set CS is not satisfied The update conditions of , and finally construct the anonymous area CS'. The invention can meet the user's privacy requirements. Experiments show that the query area of ​​the service provider is reduced, the time delay for the user to obtain the service is reduced, the service quality is improved, and the invention can be used to protect the user's location privacy in the location-based service.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to a method for constructing an anonymous area, which can be used to protect user location privacy in location-based services. Background technique [0002] With the popularity of mobile devices and the development of positioning technology, location-based services (LBS) have been widely used. It means that users obtain information query and entertainment services related to their designated location through mobile devices, such as Google Maps and Sifang.com. However, while the location service provider (LSP) provides convenient services for users, it may also collect and abuse the user's service information, thereby illegally obtaining the user's private information, such as: home address, work unit, health status, etc. Therefore, location privacy protection in LBS has received extensive attention from researchers. [0003] K-anonymity is the most commonl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/08H04W4/02H04W4/021H04W12/00H04W12/02
CPCH04L63/0421H04W4/02H04W12/02H04L67/52
Inventor 李兴华裴卓雄刘海雷凯跃雒彬马建峰
Owner XIDIAN UNIV
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