Novel chaotic image cryptosystem using dynamic DNA coding

Shuang Zhou, Yi Wei, Yingqian Zhang and Lin Teng
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Shuang Zhou: ��School of Mathematical Sciences, Chongqing Normal University, Chongqing 401331, P. R. China
Yi Wei: ��School of Department of Basic, Southwest Jiaotong University Hope College, Jintang 610400, P. R. China
Yingqian Zhang: ��School of Electrical Engineering and Artificial Intelligence, Xiamen University Malaysia, Sepang 43900, Malaysia
Lin Teng: �School of Information Science and Technology, Dalian Maritime University, Dalian 116026, P. R. China

International Journal of Modern Physics C (IJMPC), 2024, vol. 35, issue 06, 1-21

Abstract: This study aims to solve the problem of small key space in image cryptosystems based on logistic mapping. First, a new one-dimensional (1D) chaotic system, with a wide continuous chaotic interval, a large Lyapunov exponent and obvious chaotic characteristics are presented. Subsequently, a novel image encryption algorithm based on the new 1D chaotic system and dynamic DNA encoding is designed. Compared with other DNA coding methods, the proposed image encryption algorithm encodes chaotic sequences and ensures that the sequence elements at different positions correspond to different DNA coding schemes. This will help to overcome the fixity of DNA coding and make the proposed dynamic DNA coding easy to operate and implement. Finally, the cipher image is obtained by scrambling and bit XOR operation based on the chaotic sequences. The fixed DNA coding method is compared with other chaotic image encryption schemes, and the experimental results indicate that the image encryption algorithm has higher security and can resist common attacks.

Keywords: Chaotic system; DNA coding; image encryption; chaos (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1142/S0129183124500682

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