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Paper Abstract and Keywords
Presentation 2022-06-17 15:20
A Study on Secret Key Sharing and Randomizing Method Based on Channel State Information and Chaos Theory
Takumi Abe, Keisuke Asano, Kenta Kato, Eiji Okamoto (Nagoya Institute of Technology), Tetsuya Yamamoto (Panasonic) RCS2022-66
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, with the commercialization of the fifth generation mobile communications system (5G), there has been a growing interest in wireless communications security. This has led to a flurry of research on physical layer security (PLS), which is not encrypted in current wireless systems. In PLS technologies, secret key sharing using channel state information (CSI), which depends on the user's time and location, has attracted much attention because it is information-theoretically secure because it uses a wireless channel that is difficult to predict. However, because CSIs are autocorrelated and time-varying, the randomness of the key deteriorates when the secret key sharing time is shortened in conventional CSI-based key sharing schemes. Therefore, in this paper, we propose a new secret key sharing method using chaos theory that does not degrade the randomness of the key even when the sharing time is shortened, in which the chaos theory exhibits unpredictable and complex behavior when generating the secret key. It is shown through numerical simulations that the proposed method passes the National Institute of Standards and Technology (NIST) randomness evaluation test even when the sharing time is shortened.
Keyword (in Japanese) (See Japanese page) 
(in English) physical layer security / channel state information / secret key sharing / chaos theory / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 73, RCS2022-66, pp. 247-252, June 2022.
Paper # RCS2022-66 
Date of Issue 2022-06-08 (RCS) 
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 RCS  
Conference Date 2022-06-15 - 2022-06-17 
Place (in Japanese) (See Japanese page) 
Place (in English) University of the Ryukyus, Senbaru Campus and online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Resource Control, Scheduling, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2022-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Secret Key Sharing and Randomizing Method Based on Channel State Information and Chaos Theory 
Sub Title (in English)  
Keyword(1) physical layer security  
Keyword(2) channel state information  
Keyword(3) secret key sharing  
Keyword(4) chaos theory  
1st Author's Name Takumi Abe  
1st Author's Affiliation Nagoya Institute of Technology (Nagoya Institute of Technology)
2nd Author's Name Keisuke Asano  
2nd Author's Affiliation Nagoya Institute of Technology (Nagoya Institute of Technology)
3rd Author's Name Kenta Kato  
3rd Author's Affiliation Nagoya Institute of Technology (Nagoya Institute of Technology)
4th Author's Name Eiji Okamoto  
4th Author's Affiliation Nagoya Institute of Technology (Nagoya Institute of Technology)
5th Author's Name Tetsuya Yamamoto  
5th Author's Affiliation Panasonic Corporation (Panasonic)
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Speaker Author-1 
Date Time 2022-06-17 15:20:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2022-66 
Volume (vol) vol.122 
Number (no) no.73 
Page pp.247-252 
Date of Issue 2022-06-08 (RCS) 

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