基于混沌理论和DES的图像加密算法  

Image Encryption Algorithm Based on Chaos Theory and DES

作　　者：刘平[1] 

机构地区：[1]南阳理工学院计算机与信息工程学院,河南南阳473004

出　　处：《计算机与现代化》2013年第8期184-186,191,共4页Computer and Modernization

摘　　要：混沌系统生成的序列具有较好的伪随机性,DES算法有效地实现了密码体制中扩散和混淆,本文充分利用此优良特性提出一种基于混沌理论和DES的数字图像加密算法。实验结果表明,此加密算法对密钥有较强的敏感性,可提高含密数字图像存储和其在传输中的安全性,还可有效解决图像加密算法空间域和频域所存在的问题。The sequence generated by chaotic system has better pseudo randomness. DES algorithm implements effectively the diffusion and confusion in the cryptosystem. This paper makes full use of the excellent features to propose a digital image eneryp- tion algorithm based on chaos theory and DES. Experimental results show that the encryption algorithm has strong sensitivity to the key, so it can improve the security of digital image in storage and transmission. The algorithm can also solve effectively the prob- lems existing in the spatial domain and frequency domain.

关 键 词：混沌 DES 图像加密 异或运算 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]