Efficient scheme for secure and privacy-preserving electric vehicle dynamic charging system

The dynamic charging technology will enable Electric Vehicles (EVs) to charge their batteries while moving. Special charging pads will be placed on the roads to charge the EVs through the magnetic induction. The dynamic charging system should communicate with the EVs to only charge authorized vehicles and ensure payment integrity. This communication should be secured and should not leak any private information of the EV drivers, especially location information. In this paper, we propose an efficient scheme to secure the dynamic charging system and preserve the privacy of the drivers. The scheme uses a combination of different cryptosystems to achieve security and privacy. Anonymous coins are used to ensure anonymous payment and authentication. We also developed a hierarchical authentication scheme that uses efficient cryptosystems like hashing and Exclusive-OR operations. In addition, the proposed scheme considers the characteristics of the dynamic charging system such as the large number of pads having limited computational resources and the short contact time between EVs and pads due to the high speed of EVs. Our analysis demonstrates that the proposed scheme is secure and can preserve privacy. In addition, our measurements confirm that the proposed scheme is efficient.