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Paper Abstract and Keywords
Presentation 2022-11-04 14:45
True Random Number Sequences Generated by Utilizing Timing Jitters in Superconducting Integrated Circuits
Kenta Sato (UEC), Naonori Sega, Hiroshi Shimada, Mizugaki Yoshinao (UEC) SCE2022-10
Abstract (in Japanese) (See Japanese page) 
(in English) A Hardware Random Number Generator (HRNG), which generates true random number sequences, is studied. In superconducting Single Flux Quantum (SFQ) circuitry, HRNGs that utilized timing jitters in trigger signals have been demonstrated. In this research, we proposed an HRNG with two oscillators to enhance stability against variation of oscillator frequencies. We investigated the characteristics of random numbers generated by the proposed HRNG not only by numerical simulation but also by experiments using Nb test circuits. In numerical simulation, the probability of “1” in random number sequences had a local minimum at that fclk (the clock oscillator frequency) and fgate (the gate oscillator frequency) was approximately equal (fclk ≈ fgate) for fclk ≤ 60 GHz. Also, the pass rate of random number test FIPS 140-2 was little affected by variations of fclk at fgate = 69.2 GHz. In experimental measurements, 1 Mbits random number sequences generated by a test circuit were passed the random number test SP 800-22 at fclk = 48.79 GHz and fgate = 19.81 GHz.
Keyword (in Japanese) (See Japanese page) 
(in English) Superconducting integrated circuit / SFQ circuit / Hardware random number generator / True random number / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 240, SCE2022-10, pp. 6-10, Nov. 2022.
Paper # SCE2022-10 
Date of Issue 2022-10-28 (SCE) 
ISSN Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee SCE  
Conference Date 2022-11-04 - 2022-11-04 
Place (in Japanese) (See Japanese page) 
Place (in English) RIEC, Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Superconducting Electronics 
Paper Information
Registration To SCE 
Conference Code 2022-11-SCE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) True Random Number Sequences Generated by Utilizing Timing Jitters in Superconducting Integrated Circuits 
Sub Title (in English)  
Keyword(1) Superconducting integrated circuit  
Keyword(2) SFQ circuit  
Keyword(3) Hardware random number generator  
Keyword(4) True random number  
1st Author's Name Kenta Sato  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Naonori Sega  
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3rd Author's Name Hiroshi Shimada  
3rd Author's Affiliation The University of Electro-Communications (UEC)
4th Author's Name Mizugaki Yoshinao  
4th Author's Affiliation The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2022-11-04 14:45:00 
Presentation Time 25 minutes 
Registration for SCE 
Paper # SCE2022-10 
Volume (vol) vol.122 
Number (no) no.240 
Page pp.6-10 
Date of Issue 2022-10-28 (SCE) 

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