Location privacy protection method based on dynamic pseudonym exchange area

Abstract

The invention discloses a location privacy protection method based on a dynamic pseudonym exchange area, and belongs to the field of location privacy protection of the Internet of vehicles. The methodcomprises the steps that a vehicle in the vehicular ad hoc network registers and generates a dynamic pseudonym in the driving process and periodically updates the pseudonym, then the vehicle dynamically establishes a pseudonym exchange area, carries out pseudonym exchange to enhance the location privacy, embeds an improved Diffie-Hellman key exchange protocol in the pseudonym exchange process atthe same time to protect the pseudonym exchange process, the vehicle initiating the pseudonym exchange uploads a pseudonym exchange log to a certification authority (CA) of the area after the completion of the pseudonym exchange, the CA re-establishes the relationship between a real ID and the pseudonym of the vehicle through analyzing the pseudonym exchange log so as to enable the CA to perform identity tracking and violation processing. The location privacy protection method solves a problem of location privacy of the vehicle in the driving process, and is an effective location privacy protection method which adapts to the communication environment of the Internet of vehicles and can claim the responsibility of violation vehicles.

Description

technical field [0001] The invention relates to a location privacy protection method based on a dynamic pseudonym exchange area, and belongs to the field of location privacy security protection of the Internet of Vehicles. Background technique [0002] In the Internet of Vehicles, according to the DSRC protocol, the vehicle broadcasts its own traffic status information, such as speed, direction, and road conditions, every 100-300ms during driving. Using this information, vehicles, RSUs and traffic control application centers can implement collision avoidance and road optimization, thereby improving road safety and traffic efficiency. At the same time, eavesdroppers can also use this kind of information to use multi-target tracking (MTT) technology to reconstruct the trajectory of the vehicle to a certain extent. In order to protect the location privacy of vehicles, the usual practice is that each vehicle needs a large number of pseudonyms and regularly update the pseudonyms...

AI Technical Summary

Problems solved by technology

However, these schemes require vehicles to be equipped with a large number of anonymous certificates in advance, resulting in a complex problem of storage and management of anonymous certificates, which makes these schemes not suitable for IoV

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