基于超混沌序列的图像加密方案  

Image encryption scheme based on hyper-chaotic sequence

作　　者：钟厚桥[1] 李建民[1] 林振荣[2] 王振[3] 

机构地区：[1]南昌大学电子信息工程系,南昌330031 [2]南昌大学计算机科学与技术系,南昌330031 [3]南昌大学图书馆,南昌330031

出　　处：《计算机应用研究》2013年第10期3110-3113,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(61262084);江西省教育厅资助项目(GJJ12048);江西省科技厅资助项目(20122BBE500049)

摘　　要：为了提高保密图像传输安全性,基于超混沌序列提出一种图像置乱与置换加密方案。根据明文像素信息对超混沌序列进行改造处理,使得密钥序列对明文图像敏感,再根据分离置乱密钥序列与灰度值置换密钥序列分别对图像像素执行置乱与置换操作。仿真结果表明,加密图像灰度分布均衡,密文对明文与密钥高度敏感,可有效抵御统计、穷举、差分等多种攻击,验证了方案的可行性。In order to improve the security of secret image transmission, this paper put forward a kind of image encryption scheme based on hyper-chaotic sequences. Firstly,it added plaintext pixel information to the transformation of each element of hyper-chaotic sequences which resulted in both key sensitivity and plaintext sensitivity. Then, it shuffled and encrypted the plaintext pixels according to the separation scrambling key sequences and the gray replacement key sequences pixel by pixel. The simulation results show that the gray distribution of encrypted image is balanced with its cipher-text sensitive to plain-text and key, and it is secure with strong resistibility to various attacks, such as statistical, exhaustive and differential attacks, veri- fying the feasibility of this scheme.

关 键 词：图像加密 超混沌序列 信息安全 保密通信 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]