Abstract
In this paper, a color image encryption algorithm based on the fractional-order multi-scroll Chen chaotic system and DNA mutation principle is proposed. The dynamical performances of the fractional-order multi-scroll Chen chaotic system are analyzed by phase diagram, Lyapunov exponential spectrum and bifurcation diagram. Meanwhile, we realized the hardware circuit simulation of the chaotic system on the DSP platform. Based on comprehensive analysis, an image encryption algorithm is designed. In particular, a DNA algorithm with mutation effect has been introduced into the encryption algorithm. Finally, the performances of the designed encryption scheme are analyzed by key space, correlation coefficients, information entropy, histogram, differential attacks and robustness analysis. The experimental results prove that the algorithm has strong encryption capabilities and can withstand multiple decryption methods. The new color image encryption scheme proposed in this paper can realize the secure communication of digital images.
Highlights
With the rapid development of computer technology and network communication technology, a new platform is provided for us to achieve a more secure color image encryption algorithm design
A color image encryption algorithm with better performance is proposed, which is based on the chaotic sequence generated by the fractional-order laser chaotic system, the principle of DNA mutation is added to it
A novel color image encryption algorithm based on multi-scroll Chen chaotic system and DNA mutation principle has been proposed in this paper
Summary
With the rapid development of computer technology and network communication technology, a new platform is provided for us to achieve a more secure color image encryption algorithm design. This paper proposes a new multi-scroll Chen chaotic system and analyzes its dynamical characteristics. The image encryption scheme is designed based on the fractional-order multi-scroll Chen chaotic system. The catastrophe theory in this work can more radically change the value of pixels, thereby resisting various cracking attacks, and provides a new encryption idea For these reasons, A color image encryption algorithm with better performance is proposed, which is based on the chaotic sequence generated by the fractional-order laser chaotic system, the principle of DNA mutation is added to it.
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