机构地区: 汕头大学
出 处: 《数据采集与处理》 2007年第3期292-298,共7页
摘 要: 提出了一种新的基于3维混沌猫映射的图像加密方法。该方法采用改进的3维混沌猫映射来提高加密的置乱程度,并把耦合映像格子模型(Coupled map lattice,CML)映射引入加密的扩散过程,明显提高了加密系统的初始敏感性和安全性。仿真结果表明,该方法具有足够大的密钥空间和足够高的安全性,不仅能抵抗差分攻击、选择明文攻击、统计攻击等,而且取得了复杂度和速度的良好折中。 A novel 3D based image encryption method is presented. The improved 3D cat map and the coupled map lattice (CML) mode are introduced into the confusion and diffusion process respectively. They improve the initial sensitivity and the security of the eneryption system. Experimental results show that the method has big enough key space and high secure. It can resist differential attack, plain-text attack, statistic attack, etc. The method has a good balance of the complexity and the speed.
关 键 词: 维混沌猫映射 图像加密 随机扫描模型 耦合映象格子
领 域: [自动化与计算机技术] [自动化与计算机技术]