Design of Low-Power 6T Adiabatic PUF Circuit

The adiabatic based Physical Unclonable Functions (PUF) is a circuit that utilizes adiabatic technology and the variations in the CMOS manufacturing process to achieve low energy dissipation and enhance device security. In this paper, we propose a low-power 6T adiabatic PUF and simulated using 0.18 $\mu \mathrm{m}$ CMOS process technology. The simulation results show that the proposed PUF achieves an average reliability of $98.51 \%$ against variations of temperature and supply voltage, with a uniqueness of $49.75 \%$ and consumes $15.92 \mathrm{fJ} / \mathrm{Cb}-\mathrm{cycle}$ per bit. To validate the functionality of the proposed PUF, a 4-bit Low-Power 6T PUF chip is fabricated using $0.18 \mu \mathrm{~m}$ standard CMOS process. Measurement results show that the proposed PUF has normal PUF functionality and has an average reliability of $96.92 \%$ at room temperature.