Performance of encryption schemes in chaotic optical communication: A multifractal approach

Luciano Zunino, Miguel C. Soriano, Alejandra Figliola, Darío G. Pérez, Mario Garavaglia, Claudio R. Mirasso, Osvaldo A. Rosso

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


From the estimation of the Hurst exponent and the multifractality degree we discriminate the security levels of two typical encoding schemes usually applied in chaos-based communication systems. We also analyze the effects that the sampling period and the message amplitude have on the goodness of these techniques. We compare our results with those obtained by considering an information theory approach [O.A. Rosso, R. Vicente, C.R. Mirasso, Phys. Lett. A 372 (2007) 1018]. The Hurst exponent seems to be a sensitive and powerful tool for discriminating the presence of a message embedded in a chaotic carrier.

Original languageEnglish
Pages (from-to)4587-4594
Number of pages8
JournalOptics Communications
Issue number23
StatePublished - 1 Dec 2009


  • Chaos
  • Hurst exponent
  • Multifractal detrended fluctuation analysis
  • Multifractality degree
  • Semiconductor laser
  • Signal encryption


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