Lightweight Privacy-Preserving Authentication Scheme for V2G Networks in the Smart Grid

Vehicle-to-grid (V2G) is one of the future key technologies for the smart grid. Electric vehicles (EV) are potential power consumers that can play a crucial role by delivering the power back to the grid in order to meet the power demand. However, the V2G network has some crucial security and privacy challenges. Also the existing solutions generate a huge overhead cost and do not provide resistance against well known security attacks. In order to address the identified security and privacy challenges in the V2G smart grid network. We propose a scheme based on bilinear pairing technique with an accumulator that provides mutual authentication, and privacy preservation of EV's information such as identity, battery status, location, and charging/discharging selection and time duration. The proposed scheme defeats various security attacks, including man-in-the-middle attack, replay attack, impersonation attack, redirection attack, and repudiation attack while generating lower communication and computation overhead than existing privacypreserving V2G mutual authentication schemes.