基于量子混沌映射的高效安全的图像加密算法  

An efficient and secure image encryption algorithm based on quantum chaotic mapping

作　　者：刘会[1] 金聪[1] 

机构地区：[1]华中师范大学计算机学院,湖北武汉430079

出　　处：《计算机工程与科学》2016年第11期2227-2233,共7页Computer Engineering & Science

基　　金：中央高校基本科研业务费(CCNU15GF007)

摘　　要：提出了一种基于带密钥的广义Arnold变换和量子混沌映射的图像加密算法。首先,利用二维Logistic映射产生初始条件和参数;其次,利用带密钥的广义Arnold变换对彩色图像的像素值进行置换;最后将初始条件和参数代入到量子混沌系统中,由该系统产生的一系列伪随机数与图像的像素值进行异或,改变各个位置的像素值,进而达到加密的效果。为了提高加密系统的复杂性和随机性,二维Logistic映射和二维量子混沌映射都结合加权耦合映像格子以运用到加密系统中。We propose an image encryption algorithm based on general twodimensional Arnold transform with keys and quantum chaotic mapping. Firstly, we generate the initial conditions and parameters via the twodimensional logistic mapping. Secondly, we exploit the general Arnold scrambling algorithm with keys to permute the pixels of color components R, G and B. Finally a serial of pseudorandom numbers generated by the quantum chaotic mapping is applied to modify the value of diffused pixels. In order to get the high randomness and the high complexity, the twodimensional logistic mapping and quantum chaotic mapping are coupled with nearestneighboring coupledmapping lattices.

关 键 词：ARNOLD变换 量子混沌映射 二维LOGISTIC映射 最近邻耦合映像格子 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]