基于混沌系统的图像加密算法

New Image Encryption Algorithm Based on Chaos System

混沌序列具有容易生成、对初始条件敏感以及具备白噪声的统计特性等特点 .混沌序列的离散映射也具有其相似的特性 .文中讨论了一种以实数值混沌序列为基础、利用图像置乱变换技术 ,实现基于空域或频域的数字图像加密算法 .该算法具有较高的安全性 ,实验结果令人满意 .

Chaotic sequences have several good properties including the ease of their generation, their sensitive dependence on initial condition and noise like. In this paper, we discussed an image encryption arithmetic based on chaotic sequences. We generate the real number value chaotic sequences by using the key value and disperse them into symbol matrix and transformation matrix. We implement the image encryption algorithm based on the technique of image scrambling transformation in space or frequency domain. Our algorithm provides good security. Experimental results are satisfactory.