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Klein E, Gross N, Kopelowitz E, et al. Public-channel cryptography based on mutual chaos pass filters. Phys Rev E Stat Nonlin Soft Matter Phys. 2006;74(4):046201doi: 10.1103/PhysRevE.74.046201.
Klein, E., Gross, N., Kopelowitz, E., Rosenbluh, M., Khaykovich, L., Kinzel, W., & Kanter, I. (2006). Public-channel cryptography based on mutual chaos pass filters. Physical review. E, Statistical, nonlinear, and soft matter physics, 74(4), 046201. https://doi.org/10.1103/PhysRevE.74.046201
Klein, Einat, et al. "Public-channel cryptography based on mutual chaos pass filters." Physical review. E, Statistical, nonlinear, and soft matter physics vol. 74,4 (2006): 046201. doi: https://doi.org/10.1103/PhysRevE.74.046201
Klein E, Gross N, Kopelowitz E, Rosenbluh M, Khaykovich L, Kinzel W, Kanter I. Public-channel cryptography based on mutual chaos pass filters. Phys Rev E Stat Nonlin Soft Matter Phys. 2006 Oct;74(4):046201. doi: 10.1103/PhysRevE.74.046201. Epub 2006 Oct 02. PMID: 17155147.
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Phys Rev E Stat Nonlin Soft Matter Phys. 2006 Oct;74(4):046201. doi: 10.1103/PhysRevE.74.046201. Epub 2006 Oct 02.

Public-channel cryptography based on mutual chaos pass filters.

Physical review. E, Statistical, nonlinear, and soft matter physics

Einat Klein, Noam Gross, Evi Kopelowitz, Michael Rosenbluh, Lev Khaykovich, Wolfgang Kinzel, Ido Kanter

Affiliations

  1. Department of Physics, Bar-Ilan University, Ramat-Gan, 52900 Israel.

PMID: 17155147 DOI: 10.1103/PhysRevE.74.046201

Abstract

We study the mutual coupling of chaotic lasers and observe both experimentally and in numeric simulations that there exists a regime of parameters for which two mutually coupled chaotic lasers establish isochronal synchronization, while a third laser coupled unidirectionally to one of the pair does not synchronize. We then propose a cryptographic scheme, based on the advantage of mutual coupling over unidirectional coupling, where all the parameters of the system are public knowledge. We numerically demonstrate that in such a scheme the two communicating lasers can add a message signal (compressed binary message) to the transmitted coupling signal and recover the message in both directions with high fidelity by using a mutual chaos pass filter procedure. An attacker, however, fails to recover an errorless message even if he amplifies the coupling signal.

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