Efficient privacy-preserving authentication for V2G networks

Abstract

Vehicle-to-grid (V2G) networks, as a crucial subsystem of smart grid, can potentially help the grid to improve stability, save generation cost and reduce energy consumption. However, how to ensure the security and privacy of V2G networks, especially to realize secure communication between electric vehicles (EVs) and the grid, is extremely challenging. In order to overcome the challenge, we design an efficient privacy-preserving authentication scheme for V2G networks. In the proposed scheme, EV can securely access services provided by smart grid using an authenticated key agreement protocol established between them, which can support mutual authentication and generate a secure common session key for further communication. Security analysis and performance evaluation show that the proposed scheme not only protects the privacy of EV, but also reduces the computation cost of charging station and EV. Experimental results demonstrate that our scheme is fit for the application of V2G networks.