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