0446895 20240111140907.120150901235959.9 84940533198 000364247000035 10.1016/j.amc.2015.08.037 12 s. P cav_un_epca*02561600096-30032701 (2015)413-424Elsevier Hyperchaotic encryption Piecewise linear systems Stream cipher Pseudo-random bit generator Chaos theory Multi-scrollattractors cav_un_auth*0297166 García-Martínez M. MX cav_un_auth*0298053 Ontanon-García L.J. MX cav_un_auth*0295508 Campos-Cantón E. MX cav_un_auth*0101074 Teorie řízení Department of Control Theory TŘ TR Department of Control Theory Čelikovský Sergej UTIA-B Ústav teorie informace a automatizace AV ČR, v. v. i. textový dokument http://library.utia.cas.cz/separaty/2015/TR/celikovsky-0446895.pdf 3,21 MB cav_un_auth*0292613 GA13-20433S GA ČR A hyperchaotic multi-scroll piece wise linear system in R^4 is binarized to generate a pseudo-random sequence which encrypt a grayscale image via symmetric-key algorithm. The sequence is analyzed throughout statistical tests according to the National Institute of Standards and Technology (NIST)specifications. The scrolls of the system are the result of a switching law that changes between the saddle hyperbolic equilibria of piece wise linear systems with eigenvalues as follows: two negative real and one pair of complex conjugate eigenvalue swith positive realpart.Thus, the encryption quality is evaluated depending on the variation of the number of scrolls. BC 2016 4 RVO:67985556 http://hdl.handle.net/11104/0248861 S MATHEMATICS.APPLIED 1.436 0.305 6.1 0.04075 0.465 17704 0.950 Q2 1.087 1372 Q1 28.748 78.9 Q3 Q2 78.937 2015 84940533198 SCOPUS 000364247000035 WOS textový dokument 3,21 MB cav_un_epca*0256160 Applied Mathematics and Computation 0096-3003 1873-5649 Roč. 270 č. 1 2015 413 424 Elsevier