Encryption test of pseudo-aleatory messages embedded on chaotic laser signals: an information theory approach

Title: Encryption test of pseudo-aleatory messages embedded on chaotic laser signals: an information theory approach
Creator: Rosso, O. A.; Vicente, R.; Mirasso, C. R.
Relation: Physics Letters A Vol. 372, Issue 7, p. 1018-1023
Publisher Link: http://dx.doi.org/10.1016/j.physleta.2007.08.063
Publisher: Elsevier BV
Resource Type: journal article
Date: 2008
Description: 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. Martin, A. Plastino, O.A. Rosso, Phys. Lett. A 311 (2003) 126, P.W. Lamberti, M.T. Martin, 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.
Subject: signal encryption; chaos; semiconductor laser; entropy; statistical complexity
Identifier: http://hdl.handle.net/1959.13/43157
Identifier: uon:5284
Identifier: ISSN:0375-9601
Language: eng
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