| Abstrakt: |
This paper presents a new image encryption algorithm based on hyper-chaotic system, three-dimensional (3D) orthogonal Latin cube transformation and RNA diffusion, which is so-called HCLRNA. The HCLRNA consists of three main steps. First, a 6D hyper-chaotic system is utilized to produce two chaotic matrices for scrambling and diffusion. Second, the plaintext image is transformed into cubes for 3D orthogonal Latin cubes transformation scrambling. Finally, the scrambled pixel values are converted into RNA codons and diffused over two rounds to obtain the cipher image. Experiments and simulations were conducted on images of sizes 256 × 256 × 3 and 512 × 512 × 3 to evaluate key space, key sensitivity, histogram, etc. The results indicate that the proposed HCLRNA satisfies the requirements of different evaluation indicators, which proves that HCLRNA can resist common attacks effectively. Moreover, compared with other studies, the HCLRNA performs significantly better in resisting differential attacks. [ABSTRACT FROM AUTHOR] |
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