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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/12869
Title: Encryption test of pseudo-aleatory messages embedded on chaotic laser signals: An information theory approach
Authors: Rosso, Osvaldo A.; Vicente, Raúl; Mirasso, Claudio R.
Keywords: Signal encryption
Semiconductor laser
Statistical complexity
Issue Date: 11-Feb-2008
Publisher: Elsevier
Citation: Physics Letters A 372(7): 1018-1023 (2008)
Abstract: In this Letter, we make use of two information-theory based indicators to measure the goodness of two encryption schemes commonly used within the context of chaotic communications. In particular, we have shown that the computation of the normalized Shannon entropy and the MPR-Statistical Complexity measure [M.T. Martín, A. Plastino, O.A. Rosso, Phys. Lett. A 311 (2003) 126, P.W. Lamberti, M.T. Martín, A. Plastino, O.A. Rosso, Physica A 334 (2004) 119] for different chaotic laser signals can lead to statistically significant criteria to assess the quality of several encryption techniques. The proposed measures allow, in some cases, to detect the presence of a message embedded within a chaotic carrier. They also reveal that the Chaos Modulation scheme is more reliable from the statistical point of view, when compared with the Chaos Shift Keying.
Description: 6 pages, 2 figures, 1 table.-- PACS nrs.: 42.55.Px; 42.65.Sf; 89.70.+c.-- Available online Sep 12, 2007.
Full-text paper available Open Access at: http://www.ifisc.uib.es/publications/downfile.php?fid=3740
Publisher version (URL): http://dx.doi.org/10.1016/j.physleta.2007.08.063
URI: http://hdl.handle.net/10261/12869
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2007.08.063
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