Hardware-intrinsic security primitives enabled by analogue state and nonlinear conductance variation
Author: ["Hussein Nili","Gina C. Adam","Brian Hoskins","Mirko Prezioso","Jeeson Kim","M. Reza Mahmoodi","Farnood Merrikh Bayat","Omid Kavehei","Dmitri B. Strukov"]
Publication: Nature Electronics
CITE.CC academic search helps you expand the influence of your papers.
Abstract
Hardware-intrinsic security primitives employ instance-specific and process-induced variations in electronic hardware as a source of cryptographic data. Among various emerging technologies, memristors offer unique opportunities in such security applications due to their underlying stochastic operation. Here we show that the analogue tuning and nonlinear conductance variations of memristors can be used to build a basic building block for implementing physically unclonable functions that are resilient, dense, fast and energy-efficient. Using two vertically integrated 10 × 10 metal-oxide memristive crossbar circuits, we experimentally demonstrate a security primitive that offers a near ideal 50% average uniformity and diffuseness, as well as a minimum bit error rate of around 1.5 ± 1%. Readjustment of the conductances of the devices allows nearly unique security instances to be implemented with the same crossbar circuit. By exploiting the nonlinear and analogue tuning properties of memristors, robust security primitives can be fabricated using integrated memristive crossbar circuits.
Cite this article
Nili, H., Adam, G.C., Hoskins, B. et al. Hardware-intrinsic security primitives enabled by analogue state and nonlinear conductance variations in integrated memristors. Nat Electron 1, 197–202 (2018). https://doi.org/10.1038/s41928-018-0039-7
