''Public channel cryptography based on a mutual chaos pass filter procedure''

E Klein, N Gross, E Kopelovitch, M Rosenbluh, W Kinzel, L. Khaykovich, I Kanter

Research output: Contribution to journalArticlepeer-review


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.
Original languageAmerican English
JournalPhysical Review E (Statistical, Nonlinear, and Soft Matter Physics)
Issue number4
StatePublished - 2006


Dive into the research topics of '''Public channel cryptography based on a mutual chaos pass filter procedure'''. Together they form a unique fingerprint.

Cite this