A security architecture for communication between smart meters and HAN devices

ECHONET Lite is recognized as a promising HAN protocol in Japan to be used as the standard interface for HEMS. On the other hand, detailed security architecture for HEMS based on ECHONET Lite has been missing. We propose and evaluate a security architecture for communications between HAN devices and smart meters. The proposed security architecture integrates HAN device registration and enrollment processes into a single network access authentication procedure using a tunneling EAP method. As a result of the evaluation, our security architecture is realized with less implementation effort to smart meters.