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SAIEE Africa Research Journal

On-line version ISSN 1991-1696
Print version ISSN 0038-2221


HILMI, Asmaa; MEZROUI, Soufiane  and  EL OUALKADI, Ahmed. An Image Encryption Based on Confusion-Diffusion Using Two Chaotic Maps and Frobenius Endomorphism. SAIEE ARJ [online]. 2023, vol.114, n.4, pp.98-105. ISSN 1991-1696.

The chaotic map including 2D-Henon and Tent maps, have been widely used in modern cryptography, due to its high level of security and low cost of computation, compared to traditional algorithms. This study suggests a method for sharing images that are dependent on both confusion and diffusion for securing a gray-scale image. First, a new perturbation method of pixels based on Henon map to generate the permutation matrix for scrambling the plain image is proposed. The confused image should be encrypted, in which we combine the Frobenius endomorphism and Tent chaotic map to generate a key encryption. Using the eXclusive-OR operation, the substitution process is realized between the key encryption and confused image. The simulation results of the proposed scheme maintain a lossless encryption quality, and the security analysis, which includes differential attack, entropy, correlation coefficient, and histogram analysis illustrate that the proposed approach reveals a high performance.

Keywords : 2D-Henon map; Chaotic cryptography; Frobenius endomorphism; Image encryption; Tent map.

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