Cryptanalysis of chaotic masking secure communication systems using an adaptive observer

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

10 Scopus Citations
View graph of relations


Related Research Unit(s)


Original languageEnglish
Pages (from-to)1183-1187
Journal / PublicationIEEE Transactions on Circuits and Systems II: Express Briefs
Issue number11
Publication statusPublished - 2008


This paper carries out a further cryptanalysis of two Lorenz-based masking secure communication systems, which have been recently attacked by a high-pass filter. As demonstrated with our simulations, high-pass filter attack works well only when the covered information signal is monotonic. However, with an adaptive observer, it is still possible to coarsely obtain the information signal and correctly identify the system user-defined parameters if a multitonic information signal is transmitted, making the security of these two systems questionable. © 2008 IEEE.

Research Area(s)

  • Adaptive observer, Adaptive synchronization, Cryptanalysis, Minimization algorithm, Secure communication