A RGB image encryption algorithm based on DNA sequence operation and hyper-chaotic system
نویسندگان
چکیده
The proposed encryption algorithm is composed of two parts, permutation and diffusion. we firstly separate the RGB image into R, G, B components, and Generate three chaotic sequences by chaotic maps to encryption. Then, transform the R, G, B components and the chaotic sequences into DNA code, and get DNA sequences matrix. Secondly, DNA matrices of the RGB image is permutated under the Chen’s hyper chaos system. Thirdly, apply DNA sequence XOR operation to XOR the DNA sequences matrices. Then, get three gray images through decoding. Finally, combine R, G, B components to get encrypted RGB images. Simulation result shows that the proposed algorithm has a large secret key space and strong secret key sensitivity, which can effectively protect the security of the encrypted image. Keywords-hyper – chaos; image encryption; Deoxyribonucleic acid (DNA)
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