一种多混沌快速图像加密算法的设计与分析  

Design and analysis of fast image encryption algorithm based on multiple chaotic systems

作　　者：王帅[1,2] 孙伟[1] 郭一楠[1] 杨海群[1] 姜树明[2] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008 [2]山东省科学院情报研究所,济南250014

出　　处：《计算机应用研究》2015年第2期512-515,共4页Application Research of Computers

基　　金：山东省信息产业发展专项资金资助项目(2012D1701);山东省博士基金资助项目(BS2010DX031);济南市科技明星计划资助项目(20110107)

摘　　要：针对单一混沌系统安全性低、图像置乱与扩散无法抵御选择明文攻击及效率低等问题,在分析传统图像加密算法的基础上,提出一种多混沌系统图像加密方法。算法采用图像置乱与扩散相结合,引入Logistic及Kent产生控制参数,设计了明密文相关的多轮加密策略。经过分析测试,算法具有更高的执行效率,两轮加密即可满足图像的安全性及实时性要求。In order to solve the problem that single chaotic system low-security, scrambling and diffusion can not resist the chosen plaintext attack and low efficiency, analysing the conventional image encryption algorithm, this paper presented a novel image encryption algorithm based on multiple chaotic systems. It combined image scrambling and image diffusion, selected Logistic and Kent map generate control parameters and correlation the plain and cipher image with iterated times. Simulation results and theoretical analysis show that the algorithm satisfies the requirements of the safety and real-time.

关 键 词：图像加密 置乱 扩散 多混沌系统 加密效率 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]