Review and evaluation of OTP-Based authentication schemes in the metering systems of smart grids

Metering systems in smart grids are the components that store, transmit and process critical data about customers and their energy use. These systems communicate with users’ devices, technicians, and utility control systems, namely MDMS, substations… Consequently, smart meters are a tempting target for intrusion and falsification attacks that may have devastating consequences on the electrical grid and user’s private life. In order to tackle eventual vulnerabilities, the One-Time-Password (OTP) is a promising technique to ensure privacy and access control to smart meters as it is claimed to have better results on safeguarding access. In this paper, we highlight the current existing OTP-based authentication approaches in the metering systems. First, we investigate the privacy issues that are related to smart meters. Additionally, we highlight significant attacks and security parameters that we will include in our evaluation. Furthermore, we will analyze the selected schemes and propose some recommendations. Finally, we will discuss limitations, challenges, and future scopes of the analyzed schemes to help future researchers use the OTP technique securely and efficiently.