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Paper Abstract and Keywords
Presentation 2021-06-23 10:30
A Study on Secret Key Sharing Using Time-Division Duplex Channel Information in Radio-Wave Encrypted Modulation
Takumi Abe, Mamoru Okumura, Keisuke Asano, Eiji Okamoto (NIT), Tetsuya Yamamoto (Panasonic) RCS2021-35
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, cyber-attacks targeting Internet of things (IoT) terminals have been increasing. As a countermeasure, encryption methods such as public key cryptography are widely used. However, the increase in the number of IoT terminals has made it difficult to distribute and manage public keys. Therefore, a secret key sharing method in time-division duplex transmission systems using location and time-dependent channel state information (CSI) is attracting attention. On the other hand, we have proposed a chaos modulation scheme having channel coding effect and physical layer security based on common key cryptography. However, an advanced key sharing scheme was not considered in the previous studies. therefore, in this paper, we propose a secret key sharing method using CSI suitable for the chaos modulation. It is shown through numerical results that the proposed method achieves a key agreement rate close to 100% in high signal-to-noise ratio region, and that the coding gain is almost equivalent to that of the chaos modulation with perfect key sharing.
Keyword (in Japanese) (See Japanese page) 
(in English) IoT / channel state information / secret key sharing / physical layer security / chaos modulation / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 72, RCS2021-35, pp. 37-42, June 2021.
Paper # RCS2021-35 
Date of Issue 2021-06-16 (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)
Download PDF RCS2021-35

Conference Information
Committee RCS  
Conference Date 2021-06-23 - 2021-06-25 
Place (in Japanese) (See Japanese page) 
Place (in English) 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 2021-06-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 Using Time-Division Duplex Channel Information in Radio-Wave Encrypted Modulation 
Sub Title (in English)  
Keyword(1) IoT  
Keyword(2) channel state information  
Keyword(3) secret key sharing  
Keyword(4) physical layer security  
Keyword(5) chaos modulation  
1st Author's Name Takumi Abe  
1st Author's Affiliation Nagoya Institute of Technology (NIT)
2nd Author's Name Mamoru Okumura  
2nd Author's Affiliation Nagoya Institute of Technology (NIT)
3rd Author's Name Keisuke Asano  
3rd Author's Affiliation Nagoya Institute of Technology (NIT)
4th Author's Name Eiji Okamoto  
4th Author's Affiliation Nagoya Institute of Technology (NIT)
5th Author's Name Tetsuya Yamamoto  
5th Author's Affiliation Panasonic (Panasonic)
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Speaker Author-1 
Date Time 2021-06-23 10:30:00 
Presentation Time 10 minutes 
Registration for RCS 
Paper # RCS2021-35 
Volume (vol) vol.121 
Number (no) no.72 
Page pp.37-42 
Date of Issue 2021-06-16 (RCS) 

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