Nonlinear Sciences – Chaotic Dynamics
Scientific paper
2000-11-03
Nonlinear Sciences
Chaotic Dynamics
15 pages, RevTeX, 6 eps figures, To appear in Int. J. Bifurcation and Chaos (July 2001)
Scientific paper
The idea of secure communication of digital signals via chaos synchronization has been plagued by the possibility of attractor reconstruction by eavesdroppers as pointed out by Perez and Cerdeira. In this Letter, we wish to present a very simple mechanism by which this problem can be overcome, wherein the signal is transmitted via a multistep parameter modulation combined with alternative driving of different transmitter variables, which makes the attractor reconstruction impossible. The method is illustrated by means of the Lorenz system and Chua's circuit as examples.
Lakshmanan Meenakshi
Palaniyandi P.
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