摘要
提出一种基于排列变换的图像加密算法,与混沌系统相结合,利用混沌序列得到随机矩阵及与其相关联的位置矩阵,实现对图像像素灰度值与位置的双重加密,算法原理简单,加/解密易于实现。实验分析表明,算法具有高的安全性,并且可以达到理想的加密效果。
We put forward an image encrypted algorithm based on permutation transformation.Combining with a chaotic system,we use the chaotic sequence to generate a random matrix and a related position matrix,and implement the double scrambling encryption of image pixel value and pixel position.The algorithm is simple,and encryption/decryption is easy to implement.Experimental analysis shows that the algorithm has good security performance and the encrypted image has ideal encrypting effect.
出处
《机械科学与技术》
CSCD
北大核心
2010年第10期1429-1432,共4页
Mechanical Science and Technology for Aerospace Engineering
关键词
排列变换
混沌系统
随机矩阵
位置矩阵
图像加密
permutation transformation
chaotic system
random matrix
position matrix
image encryption
