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A Chaos-based Image Encryption Scheme Using 3D Skew Tent Map and Coupled Map Lattice

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Author(s): Ruisong Ye | Wei Zhou

Journal: International Journal of Computer Network and Information Security
ISSN 2074-9090

Volume: 4;
Issue: 1;
Start page: 38;
Date: 2012;
Original page

Keywords: Chaotic system | Coupled map lattice | Ergodicity | 3D skew tent map | Image encryption scheme

ABSTRACT
This paper proposes a chaos-based image encryption scheme where one 3D skew tent map with three control parameters is utilized to generate chaotic orbits applied to scramble the pixel positions while one coupled map lattice is employed to yield random gray value sequences to change the gray values so as to enhance the security. Experimental results have been carried out with detailed analysis to demonstrate that the proposed image encryption scheme possesses large key space to resist brute-force attack and possesses good statistical properties to frustrate statistical analysis attacks. Experiments are also performed to illustrate the robustness against malicious attacks like cropping, noising, JPEG compression.
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