Presentation 2021-06-23
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, Tetsuya Yamamoto,
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Abstract(in Japanese) (See Japanese page)
Abstract(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)
Keyword(in English) IoT / channel state information / secret key sharing / physical layer security / chaos modulation
Paper # RCS2021-35
Date of Issue 2021-06-16 (RCS)

Conference Information
Committee RCS
Conference Date 2021/6/23(3days)
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.
Chair Eiji Okamoto(Nagoya Inst. of Tech.)
Vice Chair Fumihide Kojima(NICT) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba)
Secretary Fumihide Kojima(Panasonic) / Toshihiko Nishimura(NEC) / Tomoya Tandai
Assistant Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO)

Paper Information
Registration To Technical Committee on Radio Communication Systems
Language JPN
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)
Date 2021-06-23
Paper # RCS2021-35
Volume (vol) vol.121
Number (no) RCS-72
Page pp.pp.37-42(RCS),
#Pages 6
Date of Issue 2021-06-16 (RCS)