摘要： 针对目前低维混沌系统容易遭遇分割攻击的问题，提出一种基于多维混沌系统的图像加密算法。以Arnold、Ushiki及3D Lorenz为基础，采用多轮混淆变换和单轮扩散变换研究不同维的混沌映射，包括对图像像素置乱、密钥流生成以及加密操作符选择运算。实验结果表明，该算法能获得良好的加密效果，具有较高的安全性能及较强的抗攻击能力。

关键词: 多维混沌系统, 三维Lorenz, 混沌密码, 图像加密

Abstract: Aiming at the problem of divide-and-conquer attacking on the low-dimensional chaotic system, a new image encryption algorithm based on multidimension chaotic system is proposed. Such as Arnold, Ushiki and 3D Lorenz map, on the basis of the research on different chaotic maps, it achieves the structure of more overall rounds of confusion stage and a single diffusion stage. It contains pixel confusion and the key stream, as well as the way of encryption operator generation. Experimental results show that the proposed algorithm can get excellent encryption effect, high security performance, and strong attack against ability.

Key words: multidimensional chaotic system, 3D Lorenz, chaotic cipher, image encryption

中图分类号: 

• TP301.6