A Lightweight Privacy-Preserving Authentication Scheme for Vehicle-to-Grid

In the Vehicle-to-Grid (V2G) network, electric vehicles (EVs) transmit vehicle identity, battery details, battery state of charge, and current location to the charging piles. Due to wireless communication, a malicious adversary can eavesdrop on, modify, and interrupt the transmitted messages between electric vehicles (EVs) and charging piles. Therefore, privacy concerns for EVs arise. To address the challenge of privacy leakage, a privacy-preserving authentication mechanism is essential for charging between EVs and charging piles. Currently, numerous studies have explored anonymous authentication and privacy preservation for EVs charging. But existing performance is inefficient in computational costs. Therefore, we propose a lightweight privacy-preserving authentication (LPPA) scheme based on elliptic curve signcryption for EVs charging in this article. The experiment analyses demonstrate that our scheme requires fewer computational costs than the comparison schemes.