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18 September 2018 Experimental investigation of security parameter of Y-00 quantum stream cipher transceiver with randomization technique: part II
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Abstract
As a security parameter of Y-00 quantum stream cipher, a guessing probability by an eavesdropper for a secret key of legitimate users is discussed. Assuming that Eve employs the direct detection and Gaussian intensity distribution of each intensity level of Y-00 cipher signals are same, an analytic solution of probability of correct guessing of the secret key in a case of the ciphertext-only attack is derived. The solution is applied to experimentally measure the probabilities of our Y-00 quantum stream cipher transceiver. A very low probability of the Y-00 cipher transceiver is experimentally confirmed.
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Fumio Futami, Ken Tanizawa, Kentaro Kato, and Osamu Hirota "Experimental investigation of security parameter of Y-00 quantum stream cipher transceiver with randomization technique: part II", Proc. SPIE 10771, Quantum Communications and Quantum Imaging XVI, 1077114 (18 September 2018); https://doi.org/10.1117/12.2320820
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