Electric Vehicle Charging: a Survey on the Security Issues and Challenges of the Open Charge Point Protocol (OCPP)
Z. Garofalaki, D. Kosmanos, S. Moschoyiannis, D. Kallergis, C., Douligeris

TL;DR
This survey reviews security issues and challenges in the Open Charge Point Protocol (OCPP) used for EV charging communication, highlighting vulnerabilities and proposing future research directions.
Contribution
It provides a comprehensive overview of security challenges in OCPP and discusses potential solutions and future research avenues for enhancing protocol security.
Findings
Identification of key security issues in OCPP
Analysis of threats faced by EV charging communication
Proposed future research directions for security improvements
Abstract
The increased use of smart Electric Vehicles (EVs) and Plug-in Electric Vehicles (PEV) opened a new area of research and development. The number of EV charging sites has considerably increased in residential as well as in public areas. Within these EV charging sites, various entities need to communicate in a secure and efficient way. The Open Charge Point Protocol (OCPP) offers a way to coordinate this communication and is already being used in many implementations. However, only the latest OCPP 2.0 version of the protocol includes certain security features. In this article, we present the entities that take part in an OCPP-based smart charging scenario, we identify security issues and threats and present solutions that have been proposed by scholars.We identify open security issues for OCPP and propose future research directions for the security enhancement of the protocol.
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