ESAF: An Efficient and Secure Authentication Framework for V2G Network
Prarthana J. Mehta, Balu L. Parne, Sankita J. Patel · 2024
Electrical Vehicles (EVs) are integrated into the Smart Grid (SG) network to enhance energy flow and fulfill future energy demand using the Vehicle to Grid (V2G) technology. The V2G supports bidirectional information sharing among the power grid and EVs. The EVs can send a request to charge their batteries from the charging station and transfer excess energy to the power grid from their batteries. However, the communication is carried out over a public channel and that leads to several security and privacy concerns in the V2G network. Moreover, the IoT devices embedded in the EVs and charging stations are resource constrained in nature. So, there is a need to overcome the mentioned security and privacy issues with lightweight secure algorithms. In addition, EVs and charging stations are not protected by a human thus, it is necessary to protect them from physical attacks as well. To address these limitations, we propose Physically Unclonable Function (PUF) based an Efficient and Secure Authentication Framework (ESAF) to carry out secure communication in the V2G network. The ESAF is suitable for resource constrained networks as it uses lightweight basic concatenation, bitwise XoR, and one way hash operations. The correctness of the ESAF is validated through the security analysis using the BAN logic and AVISPA tool. In addition, the performance of the proposed ESAF illustrates that the computation and communication overheads are competitive with improved security.