Research On Anonymous Authentication Scheme For Internet Of Vehicle

With the proposal of intelligent transportation system,Vehicular Ad-hoc Networks technology has been widely concerned and developed.Vehicular Ad-hoc Networks(VANETs),also known as the Internet of Vehicles,are recognized as a major innovation in the Internet of Things technology.It can collect and analyze traffic data uploaded by vehicles through the network,monitor vehicle status in real time,provide better driving routes and real-time traffic decisions for vehicles,and improve the overall level of intelligent driving of vehicles.Traffic management departments can also use the Internet of Vehicles to grasp the traffic situation in various regions in real time,and use the cloud server to control traffic flow,avoid traffic congestion and improve travel efficiency.Internet of Vehicles is deployed in an open environment,and its messages are transmitted in unencrypted wireless channels.It is very important to protect its network security and user privacy.Authentication scheme can provide a variety of security features such as legitimate authentication,encrypted transmission and so on,which is a key step to ensure the safety and reliability of Internet of Vehicles.In networked intelligent driving,vehicles need to make traffic decisions quickly,so low delay is equally important.Aiming at the problems of poor security,imperfect function and large calculation time consumption in the security authentication scheme under the scenario of vehicle networking,it is of great research value to design a safe and efficient authentication scheme for vehicle networking.The main research results of this paper are as follows :(1)In order to make the vehicle quickly join the Internet of Vehicles through the authentication of identity legitimacy,and take into account the security and authentication efficiency in the authentication process,and further reduce the consumption of computation and communication,We design a bidirectional anonymous authentication and key agreement scheme based on elliptic curve for the Internet of Vehicles system.The ECCDH problem is used to ensure the security,and we use elliptic curve signature algorithm which is more lightweight than traditional PKI and bilinear paired signature algorithm to design authentication scheme..In our authentication scheme,after the vehicle completes the initial authentication with RSU in the expected driving line,the subsequent authentication can become simpler and lighter on the basis of the initial authentication.We also analyzes the security of the scheme.Using BAN logic analysis and Proverif simulation to verify the security of the scheme,and finally proving the superiority of the scheme through performance analysis.(2)In order to reduce the workload of RSU in the case of high density traffic,speed up the processing speed of message authentication,and solve the problems of large computational overhead caused by the use of double-line cryptography in the current message batch authentication scheme and long time of message passing authentication,a hybrid message authentication scheme based on edge node assistance is proposed.Based on the identity signature technology constructed by elliptic curve cryptography,the scheme performs two identity-based message authentication.One is the batch authentication of vehicle messages by edge nodes with idle resources,and the other is the authentication of edge node messages by RSU.The computing burden and message authentication time of RSU are reduced by using the resources of edge nodes,so as to improve the authentication efficiency of the system for messages.Through the security analysis and performance analysis of the scheme,in addition to protecting the privacy of user identity,it also proves the multiple security attributes and efficiency of the authentication scheme.