by Ernest Northman
Using PUFs to secure and protect ICs.
Physically unclonable functions (PUFs) are emerging as a novel way to protect a variety of ICs. In today’s world of cyber threats, vulnerabilities, insecure networks and hardware, and intrusions, it is finding a renewed interest.
The technology on which it is based has been around since the mid-1990s in its present form and the term PUF was cloned in the early 2000s.
PUFs find their ancestry in the disordered systems realm. Disordered systems, also called chaotic systems, rely on the phenomena of small variations in the initial conditions will result in unpredictable variation at the output.
PUFs are edge-of-the-envelope security techniques, but they need both market acceptance and market drivers.