Efficient Privacy‐Preserving and Secure Authentication for Electric‐Vehicle‐to‐Electric‐Vehicle‐Charging System Based on ECQV

Abstract

The use of Electric Vehicles (EVs) is almost inevitable in the near future for the sake of the environment and our plant’s long‐term sustainability. The availability of an Electric‐Vehicle‐Charg-ing Station (EVCS) is the key challenge that owners are worried about. Therefore, we suggest bene-fiting from individual EVs that have excess energy and are willing to share it with other EVs in order to maximize the availability of EVCSs without the need to rely on the existing charging infra-structure. The Internet of Electric Vehicles (IoEV) is gradually gaining traction, allowing for a more efficient and intelligent transportation system by leveraging these capabilities between EVs. How-ever, the IoEV is considered a trustless environment, with untrustworthy trading partners such as data sellers, buyers, and brokers. Data exchanged between the EV and the Energy AGgregator (EAG) or EV/EV can be used to analyze users’ behavior and compromise their privacy. Thus, a Vehicle‐to‐ Vehicle (V2V)‐charging system that is both secure and private must be established. Several V2V-charging systems with security and privacy features have been proposed. However, even if the trans-mitted communications are entirely anonymous, anonymity alone will not prevent the tracking ad-versary from reconstructing the target vehicle’s route. These systems frequently fail to find a balance between privacy concerns (e.g., trade traceability to achieve anonymity, and so on) and security measures. In this paper, we propose an efficient privacy‐preserving and secure authentication based on Elliptic Curve Qu–Vanstone (ECQV) for a V2V‐charging system that fulfils the essential require-ments and re‐authentication protocol in order to reduce the overhead of future authentication pro-cesses. The proposed scheme utilizes the ECQV implicit‐certificate mechanism to create credentials and authenticate EVs. The proposed protocols provide efficient security and privacy to EVs, as well as an 88% reduction in computational time through re‐authentication, as compared to earlier efforts.