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Title:
通信装置、光伝送装置、光伝送方法、および通信システム
Document Type and Number:
Japanese Patent JP7067338
Kind Code:
B2
Abstract:
A communication device includes: a counter, a pseudo-random number generator, a symbol generator, a modulator, and a controller. The counter counts symbols transmitted to a correspondent device. The pseudo-random number generator generates a pseudo-random number corresponding to a count value of the counter. The symbol generator generates a transmission symbol from a transmission signal and the pseudo-random number. The modulator generates a modulated signal from the transmission symbol. When a disruption of a communication with the correspondent device is detected, the controller selects, from among a plurality of restoring times determined in advance, a restoring time for resuming the communication, and gives the counter a count value assigned in advance to the selected restoring time. The counter resumes a counting operation from the count value given from the controller when the communication device resumes a communication with the correspondent device.

Inventors:
Shoichiro Oda
Yoshida Setsu
Application Number:
JP2018139014A
Publication Date:
May 16, 2022
Filing Date:
July 25, 2018
Export Citation:
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Assignee:
富士通株式会社
International Classes:
H04K1/02; H04B10/85
Domestic Patent References:
JP2001285277A
JP2007116659A
JP1212041A
JP2012531778A
Other References:
古澤 佐登志 ほか,光のゆらぎ効果を利用した高セキュア光伝送技術の開発,松下テクニカルジャーナル,日本,2006年10月,Vol.52,No.5,p.82-86,http://panasonic.co.jp/ptj/v5205/pdf/p0501.pdf,<検索日:平成21年10月2日>
今福 健太郎 ほか,Y-00プロトコルが古典的なストリーム暗号と等価であることについて,電子情報通信学会技術研究報告,日本,社団法人電子情報通信学会,2005年07月15日,Vol.105,No.194,p.81-87
Geraldo A. Barbosa et al.,“Secure communication using mesoscopic coherent states”,Quantum Physics,[online],2003年04月21日,http://arxiv.org/PS_cache/quant-ph/pdf/0212/0212018v2.pdf,[検索日:平成21年10月2日]、インターネット
Attorney, Agent or Firm:
Yoshiyuki Osuge
Hiroyoshi Aoki
Masayuki Amada