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Quantum enigma cipher as a generalization of the quantum stream cipher
Author(s): Kentaro Kato
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Paper Abstract

Various types of randomizations for the quantum stream cipher by Y00 protocol have been developed so far. In particular, it must be noted that the analysis of immunity against correlation attacks with a new type of randomization by Hirota and Kurosawa prompted a new look at the quantum stream cipher by Y00 protocol (Quant. Inform. Process. 6(2) 2007). From the preceding study on the quantum stream cipher, we recognized that the quantum stream cipher by Y00 protocol would be able to be generalized to a new type of physical cipher that has potential to exceed the Shannon limit by installing additional randomization mechanisms, in accordance with the law of quantum mechanics. We call this new type of physical random cipher the quantum enigma cipher. In this article, we introduce the recent developments for the quantum stream cipher by Y00 protocol and future plans toward the quantum enigma cipher.

Paper Details

Date Published: 13 September 2016
PDF: 11 pages
Proc. SPIE 9980, Quantum Communications and Quantum Imaging XIV, 998005 (13 September 2016); doi: 10.1117/12.2237570
Show Author Affiliations
Kentaro Kato, Tamagawa Univ. (Japan)


Published in SPIE Proceedings Vol. 9980:
Quantum Communications and Quantum Imaging XIV
Ronald E. Meyers; Yanhua Shih; Keith S. Deacon, Editor(s)

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Quantum enigma cipher as a generalization of the quantum stream cipher



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