基于Logistic混沌系统与魔方变换的图像加密方案

Scheme of image encryption based on logistic chaos system and magic cube transformation

设计了一种基于Logistic映射与魔方变换的图像加密方案。该方案采用改进的混沌序列二值化方法,并借用魔方变换的思想,将二值序列转换所得的整数序列与图像像素值运算后,对图像的行列分别作循环移位完成对图像的加密。实验结果分析表明,该加密方案具有良好的图像加密效果,对于常见的攻击具有较强的抗干扰能力。

An image encryption algorithm based on logistic map and magic cube transformation is proposed.The encryption scheme adopts an improved chaotic sequence binarization method and the idea of magic cube transformation.Values of Image＇s pixels are changed by the operation with integers acquired by binary sequence first,and then image is scrambled by cyclic shift of rows and columns.Experimental results show that the algorithm has good encryption performance and fine anti-attack capability.