Halide perovskite memristors as flexible and reconfigurable physical unclonable functions

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Rohit Abraham John
  • Nimesh Shah
  • Sujaya Kumar Vishwanath
  • Si En Ng
  • Benny Febriansyah
  • Metikoti Jagadeeswararao
  • Chip-Hong Chang
  • Nripan Mathews

Detail(s)

Original languageEnglish
Article number3681
Journal / PublicationNature Communications
Volume12
Online published17 Jun 2021
Publication statusPublished - 2021
Externally publishedYes

Link(s)

Abstract

Physical Unclonable Functions (PUFs) address the inherent limitations of conventional hardware security solutions in edge-computing devices. Despite impressive demonstrations with silicon circuits and crossbars of oxide memristors, realizing efficient roots of trust for resource-constrained hardware remains a significant challenge. Hybrid organic electronic materials with a rich reservoir of exotic switching physics offer an attractive, inexpensive alternative to design efficient cryptographic hardware, but have not been investigated till date. Here, we report a breakthrough security primitive exploiting the switching physics of one dimensional halide perovskite memristors as excellent sources of entropy for secure key generation and device authentication. Measurements of a prototypical 1 kb propyl pyridinium lead iodide (PrPyr[PbI3]) weak memristor PUF with a differential write-back strategy reveals near ideal uniformity, uniqueness and reliability without additional area and power overheads. Cycle-to-cycle write variability enables reconfigurability, while in-memory computing empowers a strong recurrent PUF construction to thwart machine learning attacks.

Research Area(s)

Citation Format(s)

Halide perovskite memristors as flexible and reconfigurable physical unclonable functions. / John, Rohit Abraham; Shah, Nimesh; Vishwanath, Sujaya Kumar et al.
In: Nature Communications, Vol. 12, 3681, 2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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