A CHAOTIC CONFUSION-DIFFUSION IMAGE
ENCRYPTION BASED ON HENON MAP
Ashraf Afifi
Department of Computer Engineering, | Computers and Information Technology College,
Taif University, Al-Hawiya 21974, Kingdom of Saudi Arabia
ABSTRACT
This paper suggests chaotic confusion-diffusion image encryption based on the Henon map. The proposed
chaotic confusion-diffusion image encryption utilizes image confusion and pixel diffusion in two levels. In
the first level, the plainimage is scrambled by a modified Henon map for n rounds. In the second level, the
scrambled image is diffused using Henon chaotic map. Comparison between the logistic map and modified
Henon map is established to investigate the effectiveness of the suggested chaotic confusion-diffusion
image encryption scheme. Experimental results showed that the suggested chaotic confusion-diffusion
image encryption scheme can successfully encrypt/decrypt images using the same secret keys. Simulation
results confirmed that the ciphered images have good entropy information and low correlation between
coefficients. Besides the distribution of the gray values in the ciphered image has random-like behavior.
KEYWORDS
Chaos, Encryptions, Henon map, Shuffle, Confusion, Diffusion.
ORIGINAL SOURCE URL : http://aircconline.com/ijnsa/V11N4/11419ijnsa01.pdf
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