Internet-of-vehicles location privacy protection method based on pseudonym exchange

Abstract

The invention discloses an Internet-of-vehicles location privacy protection method based on pseudonym exchange. An existing method is high in communication overhead and cannot well resist pseudonym association attacks based on semantics. According to the method, beacon information and a vehicle position speed change rule are utilized, the position privacy of the vehicle can be effectively protected, and the specific process comprises the steps that the vehicle searches for a target vehicle and requests a public key of the target vehicle from an RSU, then negotiates with the target vehicle to achieve a pseudonym exchange agreement, and finally cooperates with each other to complete pseudonym exchange. The searching of the target vehicle is completed by using predefined overtaking conditions, so that smooth transition of the state of the vehicle can be realized by temporarily broadcasting false beacon information, and an attacker is prevented from carrying out pseudonym association through semantics. The method is simple to operate and easy to implement; only communication with the target vehicle is needed, so that communication overhead is reduced; and by temporarily broadcasting the false beacon information, the pseudonym association attack is effectively resisted, and the influence on the security application is reduced.

Description

technical field [0001] The invention belongs to the technical field of the Internet of Vehicles, relates to a location-based service-based privacy protection technology, and in particular to a method for protecting privacy of a location in the Internet of Vehicles based on pseudonym exchange. Background technique [0002] There are vehicles, roadside units (Road-Side Unit, RSU) and certificate authority (Certificate Authority, CA) in the Internet of Vehicles. Vehicles periodically broadcast beacon information so that other vehicles can understand the status of the entire network and take corresponding measures to avoid traffic jams and accidents. The beacon information contains the status information of the vehicle, and the vehicle broadcasts the beacon information in plain text every 100ms to 1s. When the vehicle is driving on the road, it can only drive along the road in a certain direction under the premise of complying with relevant traffic laws, and the trajectory is p...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the communication cost is too high and the location privacy cannot be effectively protected in the existing method, and to provide a method for protecting the location privacy of the Internet of Vehicles based on pseudonym exchange, which can effectively protect the location privacy of the vehicle

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