GDL

Journal from gdlhub / 2018-05-30 14:40:10
Oleh : Hao Ruibin, Min Lequan, Zang Hongyan, Telkomnika
Dibuat : 2018-05-30, dengan 1 file

Keyword : chaotic map; pseudorandom number generator; randomness test; avalanche encryption scheme;
Url : http://journal.uad.ac.id/index.php/TELKOMNIKA/article/view/8507
Sumber pengambilan dokumen : WEB

Recently chaos-based encryption has been obtained more and more attention. Chaotic systems without equilibria may be suitable to be used to design pseudorandom number generators (PRNGs) because there does not exist corresponding chaos criterion theorem on such systems. This paper proposes two propositions on 4-dimensional systems without equilibria. Using one of the propositions introduces a chaotic system without equilibria. Using this system and the generalized chaos synchronization (GCS) theorem constructs an 8-dimensional discrete generalized chaos synchronization (8DBDGCS) system. Using the 8DBDGCS system designs a 216-word chaotic PRNG. Simulation results show that there are no significant correlations between the key stream and the perturbed key streams generated via the 216-word chaotic PRNG. The key space of the chaotic PRNG is larger than 21275. As an application, the chaotic PRNG is used with an avalanche-encryption scheme to encrypt an RGB image. The results demonstrate that the chaotic PRNG is able to generate the avalanche effects which are similar to those generated via ideal chaotic PRNGs.

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