Innovative Authentication Method for IoT Devices
Daniel-Ciprian Vasile, Paul Mugur Svasta · 2019
This work provides an innovative method for a very important cryptographic function used in securing the communications in an IoT network: authenticating a device based on the identity obtained from a unique physical characteristic. An authentication procedure requires a secret key that is usually protected by an anti-tamper mechanism. IoT devices can use tamper detection circuits to protect secret data involved in cryptographic functions as: encryption, decryption, authentication, key exchange, etc. These functions are implemented in electronic security circuits. The tamper detection circuit is independently powered by a battery in order to permanently protect the secret data, even if the equipment is not supplied with power. This paper presents a solution to obtain a unique key from the probing process of the conductive mesh that protects the electronic security circuit.