An Efficient Physically Unclonable Function based Authentication Scheme for V2G Network

With the advancement of ICT, the Electrical vehicles (EVs) are connected to the smart grid and this type of network known as Vehicle to Grid (V2G). During the Energy trading process, EV consumers also receives an economic benefit where they buy energy at low cost during slack hours and sell same to grid during higher traffic. However, the V2G network faces various security challenges like hardware security, integrity, identity preservation, mutual authentication, etc. Since EVs and CSs (charging stations) are generally unmanned hence physical security is also an important concern. In this paper, we proposed a secure, lightweight, and hardware-based key agreement scheme using Physical Unclonable Function (PUF). The proposed scheme uses the PUF concept to perform mutual authentication (MA) among EV, CS, and the GS. The formal security analysis has been performed using AVISPA tool. Further, the performance evaluation results show that overhead costs in communication and computation are less compared to the existing schemes.