Physical Unclonable Function (PUF)-Based Security in Internet of Things (IoT): Key Challenges and Solutions

Security protocols play a pivotal role in transmitting the sensitive application data through packet switched and circuit switched data communication. State-of-the-art research comes up with the constrained IoT design to provide the connectivity in between things without any human intervention. Hence, IoT becomes a promising solution to provide the end-to-end connectivity through constrained network resources. Physical Unclonable Function (PUF) is a digital logic design that is incorporated in Integrated Circuit (IC). It is lightweight, unclonable, and simple to implement. Security mechanisms based on PUF can be an efficient way to provide security for resource-constrained IoT networks. This chapter describes different security aspects/scenarios of IoT that can use PUF-based mechanisms.