Public-channel cryptography based on mutual chaos pass filters
<|reference_start|>Public-channel cryptography based on mutual chaos pass filters: 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.<|reference_end|>
@article{klein2006public-channel,
    title={Public-channel cryptography based on mutual chaos pass filters},
    author={Einat Klein, Noam Gross, Evi Kopelowitz, Michael Rosenbluh, Lev
  Khaykovich, Wolfgang Kinzel, Ido Kanter},
    journal={arXiv preprint arXiv:cond-mat/0604569},
    year={2006},
    doi={10.1103/PhysRevE.74.046201},
    archivePrefix={arXiv},
    eprint={cond-mat/0604569},
    primaryClass={cond-mat.stat-mech cs.CR}
}