一种新的计算机图像加密算法

A New Computer Image Encryption Algorithm

针对低维混沌序列加密数字图像保密性较差，可能存在一些潜在的动力学系统攻击方法的问题，本文提出了基于复合混沌序列的图像加密方法。由于复合序列掩盖了混沌子序列的分布特性，因此增强了序列的保密性。并且直接通过混沌序列的排序变换来得到图像置换的地址码，从而能快速地对图像进行置乱加密。实验分析结果表明，加密图像不仅完全依赖于密钥，而且可以抵抗常用攻击算法。

Low-dimensional chaotic sequence encryption for digital image security is poor,there may be some potential problem of dynamic system attack methods,this paper proposes an image based on compound chaotic sequence encrypfion method.Multiple sequence covered up the chaotic sequence of the distribution,the enhanced sequence of confidentiality.And ordering directly through the chaotic sequence replacement transformation to get the image address code,so the image can be quickly scrambled.Experimental results show that the encrypted image is not only entirely dependent on the key, and can resist the attack algorithm used.