Integrating Privacy into the Electric Vehicle Charging Architecture

Authors: Dustin Kern (Darmstadt University of Applied Sciences), Timm Lauser (Darmstadt University of Applied Sciences), Christoph Krauß (Darmstadt University of Applied Sciences)

Volume: 2022
Issue: 3
Pages: 140–158
DOI: https://doi.org/10.56553/popets-2022-0066

artifact

Download PDF

Abstract: The Electric Vehicle (EV) charging architecture consists of several actors which communicate with different protocols. A serious issue is the lack of adequate privacy-preserving measures that enables the generation of movement profiles or inferring consumer habits by all of the involved actors. In this paper, we propose an extension of a Trusted Platform Module (TPM)-based Direct Anonymous Attestation (DAA) scheme to enable privacy-preserving charging authorization and billing. Our implementation shows that our solution can be easily integrated into existing protocols of the Plug-and-Charge (PnC) EV charging architecture and introduces only minor overhead. The formal analysis using the Tamarin prover shows the security and privacy of our protocol extension.

Keywords: Electric Vehicle, Privacy, Direct Anonymous Attestation, Trusted Platform Module

Copyright in PoPETs articles are held by their authors. This article is published under a Creative Commons Attribution-NonCommercial-NoDerivs license.