Quantum stream cipher based on optical communications

Osamu Hirota; Kentaro Kato; Masaki Sohma; Tsuyoshi Sasaki Usuda; Katsuyoshi Harasawa

doi:10.1117/12.561778

19 October 2004 Quantum stream cipher based on optical communications

Osamu Hirota, Kentaro Kato, Masaki Sohma, Tsuyoshi Sasaki Usuda, Katsuyoshi Harasawa

Proceedings Volume 5551, Quantum Communications and Quantum Imaging II; (2004) https://doi.org/10.1117/12.561778
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

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)<

Citation Download Citation

Osamu Hirota, Kentaro Kato, Masaki Sohma, Tsuyoshi Sasaki Usuda, and Katsuyoshi Harasawa "Quantum stream cipher based on optical communications", Proc. SPIE 5551, Quantum Communications and Quantum Imaging II, (19 October 2004); https://doi.org/10.1117/12.561778

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