Research On Security Authentication Based On Privacy-preservation For Internet Of Vehicles

The Internet of Vehicles is considered to be an effective solution to the current public transportation problems.Sensor technology allows the vehicle to perceive the state of the vehicle itself through sensors such as pressure,speed,and temperature,and the state of the vehicle’s surrounding environment through cameras,radar,and positioning systems.Vehicles can communicate with each other based on wireless communication technology.From a wider range of vehicle’s perception,drivers have more information to decide what to do next.However,due to the complexity of the Internet of Vehicles communication environment,the IoV’s cyber security and user’s privacy security are facing huge risks.The research on the security of IoV communication focuses on the authentication scheme based on the privacy protection strategy.The authentication scheme should secure the security and privacy of vehicles,and be efficient and practicable at the same time.It is difficult to achieve a balance between security,privacy and efficiency by applying only one single authentication scheme in the entire IoV.Therefore,it is practical to propose different privacy-preservation schemes for different IoV scenarios to achieve better performance.It is of great significance to promote the further development of IoV.The main research and innovation contents of this paper are as follows.(1)A privacy-preserving security authentication scheme based on group signature is proposed for highway scenarios.The scheme is based on the group signature authentication mechanism,so the vehicles can only communicate with the vehicles in the same Road Side Unit group range.The sender uses the group key to generate the MAC of safety message and other members within the same RSU group range can use the same key for authentication.The scheme has lower computational overhead and communication overhead and can meet the requirements of the IoV communication.In addition,dynamically adjusting the RSU group members according to traffic density can reduce the pressure of authentication communication overhead.(2)A certificateless privacy-preserving authentication scheme based on elliptic curve is proposed for crossroad scenarios.By using certificateless scheme,there is no difficulties of certificate management and insecurity of key escrow.In addition,because bilinear pairing operation is not been used,the proposed scheme has less computational overhead and communication overhead.In the security analysis,the scheme is proofed to resistant forgery attacks based on the difficulty of the Elliptic Curve Discrete Logarithm Problem.On the other hand,TA issues pseudonyms for the vehicle to ensure the anonymity of the vehicle.And in the event of dispute,the TA can trace the real identity of the malicious vehicle.