一种四翼混沌模型的扩展及其应用

Extension of a kind of four-wing chaotic model and its application

高维混沌系统在保密通信中表现出许多优良特性,使用反馈控制方法,将一个四翼混沌模型进行扩展,得到了一个五维四翼混沌模型。通过实验和分析发现该模型具有两个正的最大Lyapunov指数,而且具有连续的功率谱,表明其具有一定的混沌行为,具有四翼吸引子。最后将该混沌模型生成的序列修正后应用于彩色图像加密机制中,实验结果表明,该加密机制不仅可以达到理想的加密效果,而且具有较高的安全性,可以抵抗各种统计分析攻击。

The chaotic system with high dimensions has showed many excellent characteristics in secure communication,the feedback control method to expand a four wing chaotic model was used to attain a five-dimensional chaos model with four wings.Through the experiment and analysis,it shows that this model has two largest Lyapunov exponents and a continuous spectrum,showing that it has some chaotic behavior and has the four wing attractors.The sequence after correction generated by the chaotic model is applied in color image encryption mechanism,experimental results show that the proposed encryption mechanism can not only achieve very good encryption effect,but also has high safety,which can resist various statistical analysis attack.