Bistable Josephson Junction-Based True Random Number Generator Without Inductors

True random number generators are essential for many applications including security and statistical simulations. A novel superconductive true random number generator is proposed based on inductor-less bistable Josephson junction circuits. The recently proposed design methodology, based on all-Josep...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2023-04, Vol.70 (4), p.1615-1619
Main Authors: Elmitwalli, Eslam, Kose, Selcuk
Format: Article
Language:English
Subjects:
Circuit design
Circuits
Electronic circuits
Generators
Hardware security
Inductors
Integrated circuit modeling
Josephson junctions
Junctions
Random numbers
Randomness
security primitive
Statistical tests
superconductive circuits
Superconductivity
Superconductors
Switches
Thermal noise
true random number generator
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Summary:True random number generators are essential for many applications including security and statistical simulations. A novel superconductive true random number generator is proposed based on inductor-less bistable Josephson junction circuits. The recently proposed design methodology, based on all-Josephson junctions, promises higher area efficiency and simpler circuit design. In this brief, this methodology is extended to a superconductive circuit design that extracts randomness from thermal noise present in electronic circuits. A high throughput of 16 GHz is achieved using the proposed design, with no bias or correlation in the output sequence. The quality of the generated randomness is assessed using NIST SP 800-22 statistical tests. A 100 Mb binary sequence is demonstrated to pass all 15 statistical tests using recommended parameters as per NIST guidelines. The simulation methodology, described in detail, is based on the MIT-LL SFQ5EE 10 kA/cm2 Nb standard process and open source Verilog-A model.
ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2022.3226166