ABSTRACT
This chapter provides an overview of the critical factors of physical unclonable functions (PUF) composition and how these features vary from devices to architectures. It highlights some of the state-of-the-art nanoelectronic logic and memory devices and their promising properties that can facilitate the design of unique and robust PUFs. The chapter also highlights the composition of PUFs in emerging nanoelectronic memory domains and analyze how different devices and designs offer lucrative security opportunities. It is crucial that a PUF maintains its qualities, such as uniqueness, randomness, and robustness/reliability, as close as possible to the ideal ones throughout its lifetime. Strong PUFs are capable of producing an exponential number of challenge–response pairs, making it extremely suitable for authentication and identification-oriented protocols. The process variation and programming sensitivity of phase change memory (PCM) can be exploited to implement PCM-based PUF. Researchers have proposed several techniques to strengthen the modeling attack resiliency of the traditional arbiter PUF by introducing nonlinearity into the architecture.
