A novel geometry based MRAM PUF

摘要

In this paper we have proposed a novel MRAM based physically unclonable function (PUF) using the uncontrollable geometric variation in MRAM cells. The geometric variations generate a preferred ground state in every MRAM cell that we have used for the novel PUF. We have also analyzed the security properties of this PUF using a combination of simulation and fabrication methods. Results show an intra-distance of 0.0225 and an inter-distance of 0.47 for this PUF.