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A dynamically adjustable k-anonymous location privacy protection method in vanet

A privacy protection and privacy technology, applied in the field of information security, can solve the problems of not taking into account the changes of user location privacy preferences, contextual scene changes, and low degree of location privacy protection, so as to improve the level of location privacy protection, improve query efficiency and increase area Effect

Active Publication Date: 2019-08-20
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a dynamically adjustable k-anonymous location privacy protection method in VANET. The three-party server does not take into account that the user's location privacy preference is affected by the change of the context scene

Method used

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  • A dynamically adjustable k-anonymous location privacy protection method in vanet
  • A dynamically adjustable k-anonymous location privacy protection method in vanet
  • A dynamically adjustable k-anonymous location privacy protection method in vanet

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0040] Such as figure 1 and figure 2 As shown, a dynamically adjustable k-anonymous location privacy protection method in VANET includes the following steps:

[0041] Step 1: Service request;

[0042] Build a user location privacy preference prediction model to obtain the user's privacy protection strength k value in different contexts; perform location anonymization on the user's real location and query radius based on the privacy protection strength k value, and send the anonymous result query service to the nearest Roadside unit RSU;

[0043] The construction process of the user location privacy preference prediction model is as follows:

[0044] (1) Establish the user's context k-anonymity matrix R;

[0045] Each element in the user's context k-anonymity matrix R represents the privacy protection strength k of a certain user u in a certain con...

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Abstract

The invention discloses a dynamically adjustable k-anonymous location privacy protection method in VANET. By mining the user's historical behavior data, the user's location privacy preference is discovered, and a location privacy preference model is established to predict the location of the target user in different contexts. Location privacy preference, so as to meet the different needs of users for service quality by dynamically adjusting the value of location privacy protection degree k; by analyzing the specific characteristics of VANET, that is, the user's vehicle can obtain the location information of neighbor vehicles through broadcast messages, and the traditional The trusted central server in the LBS architecture is removed to reduce communication costs, improve query efficiency, and avoid single-point attacks. At the same time, according to whether the location distribution of neighboring vehicles obtained by the user's vehicle through broadcast messages is dispersed, a hidden vehicle set that satisfies k-anonymity is obtained, and the area of ​​the anonymous region CR is increased, thereby improving the level of location privacy protection.

Description

technical field [0001] The invention belongs to the field of information security, in particular to a dynamically adjustable k-anonymous position privacy protection method in VANET. Background technique [0002] The present invention is a vehicle ad hoc network (Vehicular Ad hoc Network, VANET) oriented to urban areas, which is an ad hoc network composed of vehicles, roadside units (Road Side Unit, RSU) and service providers (such as gas stations, restaurants, etc.) The internet. RSU acts as a service registration center, the service provider registers with RSU, and the vehicle that sends a service request to RSU serves as a service requester. As a communication gateway, the roadside unit RSU communicates with vehicles through DSRC (Dedicated Short Range Communication) technology, and communicates with service providers through the Internet network. The vehicle node is equipped with central processing unit, memory, wireless communication module, GPS locator, sensor and oth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/08
CPCH04L63/0421H04L67/52
Inventor 罗娟钟涛张振燕胡瑾瑜
Owner HUNAN UNIV
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