Cracking chaos-based encryption systems ruled by nonlinear time delay differential equations

We report that signal encoding with high-dimensional chaos produced by delayed feedback systems with a strong nonlinearity can be broken. We describe the procedure and illustrate the method with chaotic waveforms obtained from a strongly nonlinear optical system that we used previously to demonstrat...

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Bibliographic Details
Published inPhysics letters. A Vol. 308; no. 1; pp. 54 - 60
Main Authors Udaltsov, Vladimir S., Goedgebuer, Jean-Pierre, Larger, Laurent, Cuenot, Jean-Baptiste, Levy, Pascal, Rhodes, William T.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 17.02.2003
Elsevier
Subjects
Chaos
Chaotic cryptoanalysis
Engineering Sciences
Hyperchaos
Nonlinear dynamical forecasting
Other
Chaos
Hyperchaos
Chaotic cryptoanalysis
Nonlinear dynamical forecasting
05.45.-a
SYNCHRONIZATION
SCHEME
INFORMATION
SIGNALS
HYPERCHAOS
UNMASKING
FEEDBACK-SYSTEMS
COMMUNICATION
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Summary:We report that signal encoding with high-dimensional chaos produced by delayed feedback systems with a strong nonlinearity can be broken. We describe the procedure and illustrate the method with chaotic waveforms obtained from a strongly nonlinear optical system that we used previously to demonstrate signal encryption/decryption with chaos in wavelength. The method can be extended to any systems ruled by nonlinear time-delayed differential equations.
ISSN:0375-9601
1873-2429
DOI:10.1016/S0375-9601(02)01776-0