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Proceedings Paper

Quantum stream cipher based on optical communications
Author(s): Osamu Hirota; Kentaro Kato; Masaki Sohma; Tsuyoshi Sasaki Usuda; Katsuyoshi Harasawa
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Paper Abstract

In 2000, an attractive new quantum cryptography was discovered by H.P.Yuen based on quantum communication theory. It is applicable to direct encryption, for example quantum stream cipher based on Yuen protocol(Y-00), with high speeds and for long distance by sophisticated optical devices which can work under the average photon number per signal light pulse: <n> = 1000 ~ 10000. In addition, it may provide information-theoretic security against known/chosen plaintext attack, which has no classical analogue. That is, one can provide secure communication, even the system has H(K)<

Paper Details

Date Published: 19 October 2004
PDF: 14 pages
Proc. SPIE 5551, Quantum Communications and Quantum Imaging II, (19 October 2004); doi: 10.1117/12.561778
Show Author Affiliations
Osamu Hirota, Tamagawa Univ. (Japan)
Chuo Univ. (Japan)
Kentaro Kato, Chuo Univ. (Japan)
Masaki Sohma, Tamagawa Univ. (Japan)
Tsuyoshi Sasaki Usuda, Sichi Prefectural Univ. (Japan)
Katsuyoshi Harasawa, Hitachi Hybrid Network Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 5551:
Quantum Communications and Quantum Imaging II
Ronald E. Meyers; Yanhua Shih, Editor(s)

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