A Lightweight and Robust Dynamic Authentication System for Smarthome

Summary

The advent of smarthomes improves the comfort in the homes. In this work, we are interested in automatic opening of gate at the arrival of legitimate vehicles in order to avoid that the occupants have to wait at the door. Indeed, due to the rise of insecurity in our cities, cases of aggressions in front of the doors are regularly reported. Also, the noise pollution necessary to be noticed at the door disturb the neighborhood. The major challenge of the gate automation is security. Most of the proposed solutions do not sufficiently take into account the robustness of the vehicle authentication mechanisms. We propose a security enhancement for vehicle access control with a sensor node on board at a gate that also has a sensor node. Our mutual authentication protocol between the two sensor nodes takes into account the resource limitations of the used objects. It is based on dynamic one-time passwords. We exploit random number generation and processing functions, Elliptic Curve Diffie Hellman Ephemeral (ECDHE) key exchange principle and HMAC-SHA256 hash function. The lightweight system with only one message exchanged in total offers a very low reaction time for the gate. Its dynamic nature allows it to resist to cryptanalysis and spooking attacks.