STT-DPSA: Digital PUF-Based Secure AuthenticationUsing STT-MRAM for the Internet of Things.

Physical unclonable function (PUF), a hardware-efficient approach, has drawn a lot ofattention in the security research community for exploiting the inevitable manufacturing variabilityof integrated circuits (IC) as the unique fingerprint of each IC. However, analog PUF is notrobust and resistant to environmental conditions. In this paper, we propose a digital PUF-basedsecure authentication model using the emergent spin-transfer torque magnetic random-accessmemory (STT-MRAM) PUF (called STT-DPSA for short).