Feasibility study of emerging non-volatilememory based physical unclonable functions

The feasibility and quality of Memory-based Physical Unclonable Functions (MemPUFs) based on emerging Non-Volatile Memory (eNVM) technologies (Spin-Transfer Torque Magnetic Random Access Memory, Phase Change RAM, and Resistive RAM) are studied in this paper. MemPUFs using the three technologies were evaluated in terms of reliability, uniqueness and randomness using different sensing modes and under varying operating conditions. Our results show that eNVM based MemPUFs with differential sensing mode exhibit good randomness and reliability. As compared to conventional MemPUFs, eNVM based MemPUFs are better in terms of area cost.