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A framework for public-channel cryptography using chaotic lasers

Noam Gross·Einat Klein·Michael Rosenbluh·Wolfgang Kinzel·Lev Khaykovich·Ido Kanter
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Abstract

Two mutually coupled chaotic diode lasers with individual external feedback, are shown to establish chaos synchronization in the low-frequency fluctuations regime. A third laser with identical external feedback but coupled unidirectionally to one of the pair does not synchronize. Both experiments and simulations reveal the existence of a window of parameters for which synchronization by mutual coupling is possible but synchronization by unidirectional coupling is not. This parameter space forms the basis of a proposed public-channel cryptographic scheme and is robust to various possible attacks.

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Noam Gross, Einat Klein, Michael Rosenbluh, Wolfgang Kinzel, Lev Khaykovich, Ido Kanter. 2005-07-24. A framework for public-channel cryptography using chaotic lasers. https://arxiv.org/abs/cond-mat/0507554

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