Stochastic Insulator-to-Metal Phase Transition-Based True Random Number Generator

An oscillator-based true random number generator (TRNG) is experimentally demonstrated by exploiting inherently stochastic threshold switching in the insulator-to-metal transition (IMT) in vanadium dioxide. Through experimentation and modeling, we show that the origin of stochasticity arises from sm...

Full description

Saved in:
Bibliographic Details
Published inIEEE electron device letters Vol. 39; no. 1; pp. 139 - 142
Main Authors Jerry, Matthew, Kai Ni, Parihar, Abhinav, Raychowdhury, Arijit, Datta, Suman
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2018
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Clocks
Electric potential
Experimentation
Fluctuations
Generators
insulator-to-metal transition
Numbers
Oscillators
Phase transitions
phase-transition
Positive feedback
Random numbers
Randomness
Stochastic processes
Switches
Timing jitter
Truly random number generator
Vanadium dioxide
Vibration
Online AccessGet full text

Cover

More Information
Summary:An oscillator-based true random number generator (TRNG) is experimentally demonstrated by exploiting inherently stochastic threshold switching in the insulator-to-metal transition (IMT) in vanadium dioxide. Through experimentation and modeling, we show that the origin of stochasticity arises from small perturbations in the nanoscale domain structure, which are then subsequently amplified through a positive feedback process. Within a 1T1R oscillator, the stochastic cycle-to-cycle variations in the IMT trigger voltage result in random timing jitter, which is harnessed for a TRNG. The randomness of the IMT TRNG output is validated using the NIST SP800-22 statistical test.
ISSN:0741-3106
1558-0563
DOI:10.1109/LED.2017.2771812