Attached is a write-up of some research I've been doing since November last year. The research covers the digital protocols used from an electric vehicle -> charger (ISO-15118) and the protocols used to manage the charger from a central management system (OCPP). I also cover some of the equipment I've used to do the research.
tl;dr - Your vehicle charger port or EVSE charger cable is functionally a network interface utilizing powerline communication over the control pilot pin. Using a development kit for electric vehicle and charger research, I showed how SSH can be configured to listen on the charger cable accidentally, allowing a vehicle to initiate the network and authenticate to the SSH server over the charger cable. I also demonstrate two separate issues affecting open source CSMS implementations, one a full denial of service, the other partial DoS. You can also find this HTML file here: https://ocpp.us/howto.html I hope this helps others. Thanks.
