A Lattice-Based Location Privacy Preservation Method
A privacy protection and location service technology, applied in the field of location privacy protection research, can solve the problems of high computing cost and inapplicability, and achieve the effects of high security, efficient online feedback, and broad market prospects
Active Publication Date: 2018-11-13
SUZHOU UNIV
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Although this method achieves the above goals and provides users with location information services on the premise of protecting the privacy of users and location information service providers, the two special encryption schemes used in this method, in order to provide a sufficient degree of information security, The Pailiier encryption scheme and the Rabin encryption scheme need to consume a lot of calculation costs, which makes the scheme unsuitable for practical use.
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[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0035] see figure 1 , the embodiment of the present invention includes:
[0036] A lattice-based location privacy protection method, the steps of which include:
[0037]1) Set the location service provider end to LS, set the query user end to User, and POI is information point information; the location service provider end includes a POI database, and the location service provider end provides the location to the query user end based on the POI database Information service; the POI database contains ρ POI records, ...
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The invention discloses a grid-based location privacy protection method, which includes the following steps: (1) In the preprocessing stage, the LS end constructs an index structure according to the POI database; (2) the User end uses the OT Extension protocol to access the grid P; (3) The User accesses the grid Q by using the OT Extension protocol. Through the above method, the grid-based location privacy protection method of the present invention is safe and efficient, and can guarantee second-level feedback of user queries on millions of data points. The wide application of location-based services makes the lattice-based location privacy protection method of the present invention have broad market prospects. At the same time, the lattice-based location privacy protection method of the present invention is of great significance to the further promotion and research of location privacy protection.
Description
technical field [0001] The invention relates to the research field of location privacy protection, in particular to a lattice-based location privacy protection method. Background technique [0002] With the development of mobile devices and positioning technology, a large number of services based on location information have been produced. Usually, a location service provider receives a request from a user and feeds back relevant location service information to the requesting user. For example, by submitting personal location information, the location service provider can provide the user with information such as "the nearest restaurant or shopping mall". Application services based on location information have brought great convenience to life, but at the same time, they have also brought a series of security risks. Offensive reasoning aimed at user location information may lead to the exposure of private information such as personal hobbies, behavior patterns, and social h...
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IPC IPC(8): H04L29/08H04L29/06
CPCH04L63/0428H04L67/51H04L67/52
Inventor 刘安刘曙曙李直旭刘冠峰
Owner SUZHOU UNIV