A cryptosystem based on a chameleon chaotic system and dynamic DNA coding. (February 2022)

• Record Type: Journal Article
• Authors: Folifack Signing, V.R.; Gakam Tegue, G.A.; Kountchou, M.; Njitacke, Z.T.; Tsafack, N.; Nkapkop, J.D.D.; Lessouga Etoundi, C.M.; Kengne, J.
• Is Part Of: Chaos, solitons and fractals. Volume 155(2022)
• Publication Date: 2022-02
• Subjects: Chaotic chameleon system -- Self-excited and hidden attractors -- DNA cryptography -- Image encryption; Chaotic behavior in systems -- Periodicals; Solitons -- Periodicals; Fractals -- Periodicals; Chaotic behavior in systems; Fractals; Solitons; Periodicals; 003.7
• DOI: 10.1016/j.chaos.2021.111777
• Languages: English
• ISSNs: 0960-0779

Abstract

Abstract: In this article, a chameleon cryptosystem, based not only on the properties of a chameleon chaotic system but also on the dynamic DNA coding is proposed. The chaotic chameleon system is studied as a whole to choose the chaotic sequence of each type of system. It emerges from this dynamic that, the chaotic system can produce self-excited attractors and three families of hidden attractors (no equilibrium, stable equilibrium, and line equilibrium). The proposed technique is used for image encryption and applies dynamic DNA coding (i.e. over all stages) to disrupt the pixel image distribution and tie it tightly to the chosen chaotic sequences. To further improve the security of the proposed chameleon cryptosystem, the confusion and diffusion operations are closely related to the chaotic sequences generated by the chaotic chameleon system. The experimental results and the security analysis have shown that the proposed chameleon cryptosystem has good performance and can withstand various typical and classical attacks.