Temat: chaotic functions - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Least Significant Bit Steganography using Hitzl-Zele Chaotic Map
Autorzy:: Kordov, K.
Stoyanov, B.
Powiązania:: https://bibliotekanauki.pl/articles/226663.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: steganography
steganalysis
chaotic functions
pseudorandom number generator
Opis:: We propose a novel least significant bit steganography algorithm based on a Hitzl-Zele chaotic function. On the first step a pseudorandom generator is constructed for chaotic pixel selection for hiding the secret message. Exact study has been provided on the novel scheme using visual inspection, peak signal-to-noise ratio, and histogram analysis. The experimental data show excellent performance of the novel stego technique.
Źródło:: International Journal of Electronics and Telecommunications; 2017, 63, 4; 417-422
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: SHAH : Hash Function Based on Irregularly Decimated Chaotic Map
Autorzy:: Todorova, M.
Stoyanov, B.
Szczypiorski, K.
Kordov, K.
Powiązania:: https://bibliotekanauki.pl/articles/227160.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: hash function
chaotic functions
Shrinking decimation rule
Pseudorandom number generator
Opis:: We present a new hash function based on irregularly decimated chaotic map, in this article. The hash algorithm called SHAH is based on two Tinkerbell maps filtered with irregular decimation rule. We evaluated the novel function using distribution analysis, sensitivity analysis, static analysis of diffusion, static analysis of confusion, and collision analysis. The experimental data show that SHAH satisfied valuable level of computer security.
Źródło:: International Journal of Electronics and Telecommunications; 2018, 64, 4; 457-465
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Pointwise multiplication operators on weighted Banach spaces of analytic functions
Autorzy:: Bonet, J.
Domański, P.
Lindström, M.
Powiązania:: https://bibliotekanauki.pl/articles/1216221.pdf
Data publikacji:: 1999
Wydawca:: Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:: weighted Banach spaces of analytic functions
pointwise multiplication operator
essential norm, closed range
approximative point spectrum
maximal ideal space of $H^∞$
Shilov boundary
Gleason part
hypercyclic operator
chaotic operator
Opis:: For a wide class of weights we find the approximative point spectrum and the essential spectrum of the pointwise multiplication operator $M_φ$, $M_φ(f)=φf$, on the weighted Banach spaces of analytic functions on the disc with the sup-norm. Thus we characterize when $M'_φ$ is Fredholm or is an into isomorphism. We also study cyclic phenomena for the adjoint map $M'_φ$.
Źródło:: Studia Mathematica; 1999, 137, 2; 177-194
0039-3223
Pojawia się w:: Studia Mathematica
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja