Physical Unclonable Function Based Authentication Protocol for Unit IoT and Ubiquitous IoT

Unit and Ubiquitous IoT (U2IoT) is a typical IoT architecture for achieving comprehensive interactions of ubiquitous things. In U2IoT, security becomes a challenging issue due to objects' complicated interactive phases. The object in different phases of being mapped from the physical space to the cyber space has different security requirements. In this work, a concept of Object Life Cycle (OLC) is first proposed to describe the security requirements for the objects' physical access, cyberentity, and physical extinction phase in U2IoT. Meanwhile, considering the variety of objects and related diversity resources, Physical Unclonable Function (PUF) is introduced to design a lightweight mutual authentication protocol for a smart home scenario. The design correctness and formal security are proved based on the BAN-logic. It indicates that the proposed protocol satisfies the main security requirements for the object during the physical access phase.