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L. Gunn, On the role of propagation delays in the Kish key distribution system – 21st May, 2015.

  Abstract: The Kish key distribution system has been proposed as a classical alternative to quantum key distribution, making use of temperature-matched thermal noise. Previous analyses assume instant propagation of signals along the line connecting the two users. We describe an attack that takes advantage of propagation delays. At the start of each bit period, […]

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Research Seminar 25th September, Mr. L. Gunn – The Kish Key Distribution System: A classical alternative to quantum key distribution

  Abstract: Public key cryptography has raised cryptography from a curiosity, mainly useful to governments, to its status as a pillar for modern communications. But above this magnificent throne hangs a sword of Damocles in the form of quantum computing, motivating the development of new approaches. Some have turned to physics, developing systems with security […]

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Research Seminar 31st October – Physical-layer encryption on the public internet: a stochastic approach to the Kish-Sethuraman cipher

Abstract: While information-theoretic security is often associated with the one-time pad and quantum key distribution, noisy transport media leave room for classical techniques and even covert operation. Transit times across the public internet exhibit a degree of randomness, and cannot be determined noiselessly by an eavesdropper. We demonstrate the use of these measurements for information-theoretically […]

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