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10 December 2018 Guessing probability under unlimited known-plaintext attack on secret keys for Y00 quantum stream cipher by quantum multiple hypotheses testing
Takehisa Iwakoshi
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Optical Engineering, Vol. 57, Issue 12, 126103 (December 2018). https://doi.org/10.1117/1.OE.57.12.126103
Abstract
Although quantum key distribution is regarded as promising secure communication, security of Y00 protocol proposed by Yuen in 2000 for the affinity to conventional optical communication is not well-understood yet; its security has been evaluated only by the eavesdropper’s error probabilities of detecting individual signals or masking size, the number of hidden signal levels under quantum and classical noise. Our study is the first challenge of evaluating the guessing probabilities on shared secret keys for pseudorandom number generators in a simplified Y00 communication system based on quantum multiple hypotheses testing theory. The result is that even unlimitedly long known-plaintext attack only lets the eavesdropper guess the shared secret keys of limited lengths with a probability strictly <1. This study will give some insights for detailed future works on this quantum communication protocol.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Takehisa Iwakoshi "Guessing probability under unlimited known-plaintext attack on secret keys for Y00 quantum stream cipher by quantum multiple hypotheses testing," Optical Engineering 57(12), 126103 (10 December 2018). https://doi.org/10.1117/1.OE.57.12.126103
Received: 4 September 2018; Accepted: 14 November 2018; Published: 10 December 2018
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Cited by 12 scholarly publications.
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KEYWORDS
Signal detection
Probability theory
Quantum communications
Quantum physics
Interference (communication)
Information security
Optical communications
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