Vehicle-mounted self-organizing network pseudonym conversion method based on virtual user

Abstract

The invention discloses a vehicle-mounted self-organizing network pseudonym conversion method based on a virtual user and belongs to the information safety field. In the method, a vehicle vi which needs to convert a pseudonym requests to convert the pseudonym to a road-side unit; the road-side unit informs nearby vehicles and a group owner to cooperate with the vehicle so as to carry out pseudonym conversion; the road-side unit sends a temporary identity TIDi to the vi; and the group owner sends a group public key GPK and a group private key GSK to the vi. The vi uses the temporary identity to carry out pseudonym conversion request information broadcast in the group, and simultaneously uses the group public key to sent beacon information. The group owner is an authorized road-side unit. The group owner stores information of n virtual users and simulates a normal vehicle to respond to a message after a pseudonym conversion message is received. The vi selects a pseudonym to replace the old pseudonym in the received response message. Compared to an existing model, by using the method, flexibility is possessed and a problem of a vehicle density needed by the vehicle during a pseudonym conversion period is solved.

Description

technical field [0001] The invention relates to the field of information security, in particular to a pseudonym conversion method based on virtual users in the privacy protection of vehicle-mounted self-organizing networks. Background technique [0002] Road safety has now become one of the hot issues in society. More and more vehicle manufacturers choose to equip vehicles with wireless communication devices and intelligent computing devices, resulting in the Vehicular Ad-hoc Network (VANET). Vehicle ad hoc network is an ad hoc network composed of on-board unit (OBU: On Board Unit) and roadside unit (RSU: Road Side Unit). Among them, the on-board unit allows vehicle-to-vehicle and vehicle-to-roadside unit communication, and the roadside unit allows vehicle-to-vehicle communication with other basic service facilities. The establishment of the vehicle ad hoc network enables the vehicles on the road to form an intelligent transportation network, which improves road safety and ...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a method for using virtual users to complete pseudonym transformation in vehicle ad hoc network privacy protection to solve the problem of vehicle density in traditional pseudonym transformation methods

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