Multi-Device Authentication using Wearables and IoT

The paper presents a novel cryptographic authentication scheme that makes use of the presence of electronic devices around users. The scheme makes authentication more secure by involving devices that are usually worn by users (such as smart-watches, fitness bracelets and smart-cards) or are in their proximity (such as sensors, home appliances, etc.). In our scheme, the user private key is distributed over all personal devices thus cannot be compromised by breaking into only a single device. Furthermore, involving wearables and IoT devices makes it possible to use multiple authentication factors, such as user's position, his behavior and the state of the surrounding environment. We provide the full cryptographic specification of the protocol, its formal security analysis and the implementation results in this paper