基于三维混沌序列的数字图像加密算法  

Study on digital image encryption algorithm based on 3D chaotic sequences

作　　者：李太勇[1] 贾华丁[2] 吴江[1] 

机构地区：[1]西南财经大学经济信息工程学院,四川成都610074 [2]四川大学图像图形研究所,四川成都610064

出　　处：《计算机应用》2006年第7期1652-1654,共3页journal of Computer Applications

摘　　要：对Lorenz序列进行了改进,改进后的序列具有理想的伪随机特性。提出了应用改进后的Lorenz序列进行图像加密的算法,该算法对图像的像素和空间位置均进行置乱。仿真及分析结果表明,该算法密钥空间大,具有较好的统计特性、较强的抗干扰能力和较高的执行效率,加密效果对密钥敏感。Lorenz sequences were improved to be with ideal pseudo-randomness. An image encryption algorithm was proposed, which scrambled the pixels and the spaces of the image with the improved Lorenz sequences, The simulation and analysis show that the algorithm has a large space of keys, good statistical characteristics, strong anti-noise ability and high efficiency, and the encryption effect is greatly sensitive to the keys.

关 键 词：混沌 Lorenz序列 图像加密 混沌加密 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]