A directional wave measurement attack against the Kish key distribution system
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Date
2014
Authors
Gunn, L.
Allison, A.
Abbott, D.
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Journal article
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Scientific Reports, 2014; 4(1):6461-1-6461-6
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Lachlan J. Gunn, Andrew Allison & Derek Abbott
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Abstract
The Kish key distribution system has been proposed as a classical alternative to quantum key distribution. The idealized Kish scheme elegantly promises secure key distribution by exploiting thermal noise in a transmission line. However, we demonstrate that it is vulnerable to nonidealities in its components, such as the finite resistance of the transmission line connecting its endpoints. We introduce a novel attack against this nonideality using directional wave measurements, and experimentally demonstrate its efficacy.
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