Abstract
An architecture and implementation of a Physically Unclonable Function
(PUF) based on Static Random-Access Memory (SRAM) is developed to
accommodate stochastic processing of PUF Response. An 8T-PUF cell is
built to eliminate data retention and maximise physical mismatch. The
power gating method is used to perform measurement on a subset of PUF
cells repeatedly at a high rate. Two-phase power gating is applied
selectively to parts of PUF matrix and is designed for minimising EMI
and crosstalk amongst the cells during metastability resolution whilst
maintaining high performance. The design is meant to serve as a platform
for extraction of a variety of stochastic metrics for subsequent
inclusion into PUF Responses, which comprises the novelty of the
approach.