摘要
利用排列变换具有的强不规则性,提出一种数字图像置乱加密方法.借助混沌系统生成的混沌序列得到所需的排列数组,通过对排列数组的数值进行匹配操作,达到对图像行(列)互换的目的,实现对图像的置乱加密.方法对图像大小没有限制.仿真结果表明:该方法具有理想的加密效果和较高的安全性.
Used the strong irregularity of permutation transformation,a digital image scrambling encryption method is proposed.Using the chaos sequences obtained by chaos system to generate the required permutation arrays and through match operation of the array to achieve the purpose of exchange the rows（columns）of image,the purpose to encrypted images is arrived.The proposed method has no limitation for the size of image.Simulation results show that the proposed method has the ideal encryption effect and higher security.
出处
《微电子学与计算机》
CSCD
北大核心
2010年第6期174-176,180,共4页
Microelectronics & Computer
关键词
排列变换
图像置乱
混沌系统
匹配操作
permutation transformation
image scrambling
chaos system
match operation
