基于分数阶超混沌系统的彩色图像加密算法

Xiangjun Wu
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引用次数: 10

摘要

提出了一种基于分数阶超混沌系统的彩色图像加密算法。首先,利用两个分数阶超混沌系统生成混沌序列,对图像进行置乱和扩散;系统参数、分数阶和初始条件都可以作为密钥。其次,我们使用由两个分数阶超混沌系统生成的六个加密矩阵通过两次异或操作修改了普通图像像素的RGB值。第三,利用分数阶超混沌系统生成的置换矩阵对图像像素位置进行进一步置乱。最后,实验结果表明了该算法的有效性和高安全性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Color Image Encryption Algorithm Using the Fractional-order Hyperchaotic Systems
This paper presents a new color image encryption algorithm based on the fractional-order hyper chaotic systems. First, two fractional-order hyper chaotic systems is applied to generate the chaotic sequences to scramble and diffuse the images. The system parameters, fractional order and initial conditions can be used as the secret keys. Second, we modify the RGB values of the plain-image pixels using six encryption matrices generating from two fractional-order hyper chaotic systems with a XOR operation two times. Third, the image pixel-position is further scrambled by a permutation matrix generating from a fractional-order hyper chaotic system. Finally, experimental results show the efficiency and high security of the proposed algorithm.
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