Impact of the Flicker Noise on the Ring Oscillator-based TRNGs
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21240%2F24%3A00383008" target="_blank" >RIV/68407700:21240/24:00383008 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.46586/tches.v2024.i2.870-889" target="_blank" >https://doi.org/10.46586/tches.v2024.i2.870-889</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.46586/tches.v2024.i2.870-889" target="_blank" >10.46586/tches.v2024.i2.870-889</a>
Alternative languages
Result language
angličtina
Original language name
Impact of the Flicker Noise on the Ring Oscillator-based TRNGs
Original language description
Ring Oscillators (RO) are often used in true random number generators (TRNG). Their jittered clock signal, used as randomness source, originates from thermal and flicker noises. While thermal noise jitter is generally used as the main source of randomness, flicker noise jitter is not due to its autocorrelation. This work aims at qualitatively settling the issue of the influence of flicker noise in TRNGs, as its impact increases in newer technology nodes. For this, we built a RO behavioural model, which generates time series equivalent to a jittered RO signal. It is then used to generate the output of an elementary RO-TRNG. Despite general expectations, the autocorrelation inside the output bit stream is reduced when the amplitude of flicker noise increases. The model shows that this effect is caused by the sampling of the jittered signal by the second oscillator, which hides the behaviour of the absolute jitter, causes resetting of the perceived phase, and suppresses any memory effect. The inclusion of flicker noise as a legitimate noise source can increase the TRNG output bit rate by a factor of four for the same output entropy rate. This observation opens new perspectives towards more efficient stochastic models of the RO-TRNGs. 2024, Ruhr-University of Bochum. All rights reserved.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
IACR Transactions on Cryptographic Hardware and Embedded Systems
ISSN
2569-2925
e-ISSN
2569-2925
Volume of the periodical
2024
Issue of the periodical within the volume
2
Country of publishing house
DE - GERMANY
Number of pages
20
Pages from-to
870-889
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85187787571