The novel PUF design proposed is unlike previous studies which typically require additional hardware to count the oscillation frequency. This design employs SR-FF to construct low-cost PUF and reuses the SR-FF already present by varying channel length and temperature to account for intra– and inter-chip variations. The SR-FF PUF responses can be potentially unique during a transient noise based simulation. Furthermore, the responses can be evaluated for resilience against adversarial machine learning attacks. The technology can be implemented in integrated circuits and in applications that require high security, specifically cryptography.
Cross-Coupled NAND-Based Set-Reset Flip-Flop Construction