一种基于Arnold变换和混合混沌的图像加密算法

An image encryption algorithm based on Arnold transform and mixed chaos

Arnold变换也称为猫映射,最早是由Arnold提出,因为使用一张猫脸来演示变换过程而得名,经典Arnold变换是一个二维可逆映射。混沌系统是指在一个确定性系统中,存在着貌似随机的不规则运动,其行为表现为不确定性、不可重复、不可预测,这就是混沌现象。文章在研究Arnold变换和混沌现象的基础上,提出了一种基于Arnold变换和混合混沌的图像加密算法。基于MATLAB软件的仿真实验表明,本文提出的算法,具有良好的加密性能。

Arnold transform,also known as cat mapping,was first proposed by Arnold and got its name because a cat face was used to demonstrate the transformation process.The classic Arnold transform is a two-dimensional reversible mapping.Chaotic system refers to the existence of seemingly random irregular motion in a deterministic system,whose behavior is uncertain,unrepeatable and unpredictable,which is chaos phenomenon.Based on the research of Arnold transform and chaos,an image encryption algorithm based on Arnold transform and mixed chaos is proposed in this paper.Simulation experiments based on MATLAB show that the proposed algorithm has good encryption performance.