Location anonymization-based privacy protection method and apparatus

A privacy protection and privacy technology, applied in the field of privacy protection based on location anonymity, can solve problems such as improvement, impact on user experience, adjustment of location privacy protection strategy, etc., to meet different needs, improve service quality, and improve the effect of privacy protection

Active Publication Date: 2016-12-07
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing location privacy protection scheme does not support the regulation of users' individual needs, and it is difficult for

Method used

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  • Location anonymization-based privacy protection method and apparatus
  • Location anonymization-based privacy protection method and apparatus
  • Location anonymization-based privacy protection method and apparatus

Examples

Experimental program
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Embodiment Construction

[0042] According to an embodiment of the present invention, a secondary anonymous location privacy protection method based on privacy preference is provided, which supports user personalized privacy preference setting, and generates a k-anonymity set through the privacy level set by the user, so that k-anonymity is concentrated The location has the maximum probability similarity, and then increases the Laplacian distribution noise through differential privacy technology to obtain an anonymous location, which is used to replace the real location to obtain LBS services, taking into account user privacy preferences and LBS service quality.

[0043] figure 1 It shows the flow chart of the secondary anonymous location privacy protection method based on privacy preference in this embodiment, refer to figure 1 , the privacy protection method includes the following steps:

[0044] Step 100: Prompt the user to input their own privacy preference level. In this embodiment, the privacy ...

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Abstract

The invention provides a location anonymization-based privacy protection method. The method comprises the steps of 1) determining an anonymity degree k according to a currently queried privacy level, wherein the higher the privacy level is and the higher the anonymity degree k is; 2) creating a plurality of candidate anonymity sets with k elements by taking the anonymity degree k as the size of a currently queried anonymity set; 3) searching for one candidate anonymity set with a maximum query probability set entropy from the created candidate anonymity sets to serve as the anonymity set; 4) generating an upper bound and a lower bound of an anonymity distance according to the privacy level, wherein the higher the privacy level is, the larger the upper bound of the anonymity distance is, and the larger the lower bound of the anonymity distance is; and 5) generating an anonymous location used for replacing a currently queried real location according to the generated upper bound and lower bound of the anonymity distance in the range of the anonymity set. The invention furthermore provides a corresponding privacy protection apparatus. According to the method and the apparatus, the LBS (Location Based Service) quality is improved while the location privacy protection is realized, and different demands of different users on privacy protection can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of computer data mining and analysis, in particular, the invention relates to a privacy protection method and device based on location anonymity. Background technique [0002] Currently, Location Based Service (Location Based Service, LBS for short) has been widely used in the mobile Internet. The LBS acquires Point of Interest (POI for short) information through the location information of the user, and then provides services in various fields for the user based on the POI. However, while LBS brings convenience to users, it also threatens users' personal privacy. For example, attackers can derive personal sensitive information such as home addresses, living habits, or health conditions based on users' location information. In other words, the leakage of location information poses a serious threat to personal privacy, so the research on privacy protection based on location services has positive significance...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/08
CPCH04L63/0421H04L63/105H04L67/52
Inventor 梁英毕晓迪史红周
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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