ASCH-PUF: A "Zero" Bit Error Rate CMOS Physically Unclonable Function with Dual-Mode Low-Cost Stabilization. (arXiv:2307.04344v2 [cs.CR] UPDATED)

Physically unclonable functions (PUFs) are increasingly adopted for low-cost
and secure secret key and chip ID generations for embedded and IoT devices.
Achieving 100% reproducible keys across wide temperature and voltage variations
over the lifetime of a device is critical and conventionally requires large
masking or Error Correction Code (ECC) overhead to guarantee. This paper
presents an Automatic Self Checking and Healing (ASCH) stabilization technique
for a state-of-the-art PUF cell design based on sub-threshold inverter chains.
The ASCH system successfully …

chip cmos cost critical device devices embedded error function functions iot iot devices key keys lifetime low mode puf rate secret secret key temperature