A novel color image encryption algorithm based on the fractional order laser chaotic system and the DNA mutation principle

A novel color image encryption algorithm based on the fractional order laser chaotic system and DNA mutation principle is proposed in this paper. Using phase diagram, Lyapunov exponential spectrum, bifurcation diagram and C0 complexity, the dynamic characteristics of the fractional-order laser chaotic system are analyzed, and the hardware circuit simulation of the chaotic system is realized on the DSP platform. Based on the comprehensive analysis of the system, we have designed an image encryption algorithm. Firstly, the chaotic sequence and Arnold matrix are used to scramble the value of the image. Then, in the diffusion link, DNA diffusion algorithm and DNA mutation theory were used for the first time, which increased the randomness of the matrix. 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.