A fast image encryption algorithm based on chaotic map

作者：Liu, Wenhao; Sun, Kehui^*; Zhu, Congxu

来源：Optics and Lasers in Engineering, 2016, 84: 26-36.

DOI：10.1016/j.optlaseng.2016.03.019

• Chaos
• Image encryption
• Close-loop modulation coupling model
• Chaotic shift transform

Derived from Sine map and iterative chaotic map with infinite collapse (ICMIC), a new two-dimensional Sine ICMIC modulation map (2D-SIMM) is proposed based on a close-loop modulation coupling (CMC) model, and its chaotic performance is analyzed by means of phase diagram, Lyapunov exponent spectrum and complexity. It shows that this map has good ergodicity, hyperchaotic behavior, large maximum Lyapunov exponent and high complexity. Based on this map, a fast image encryption algorithm is proposed. In this algorithm, the confusion and diffusion processes are combined for one stage. Chaotic shift transform (CST) is proposed to efficiently change the image pixel positions, and the row and column substitutions are applied to scramble the pixel values simultaneously. The simulation and analysis results show that this algorithm has high security, low time complexity, and the abilities of resisting statistical analysis, differential, brute-force, known-plaintext and chosen-plaintext attacks.

• 出版日期2016-9
• 单位新疆大学