High efficient reconfigurable PUF through spin hall-induced coupled-oscillators

In recent decades, hardware security has played a more and more important role. Among various types of hardware, the Physical Unclonable Function (PUF) has been considered as security primitives to generating keys in order to keep systems safe, authentic, informative, and identified. Recently, leveraging the physics of emerging devices to implement on PUF has long been envisioned. However, current emerging devices based PUF are unreliable due to environmental variations. In this paper, we propose High Efficient Reconfigurable PUF using Spin Hall-Induced Coupled-Oscillators, which embraces and exploits spin oscillation of spintronic devices instead of diminishing or circumventing them. Compared with conventional emerging devices based on PUF, our proposed PUF can generate more delay pairs, can be more reliable to environmental variations, faster, and low power. Comprehensive results demonstrate that the proposed PUF can sufficiently support our conclusion.