基于四维混沌系统的数字图像加密算法

根据高维混沌系统具有更高安全性的特点，提出一种基于四维混沌系统的数字图像加密算法。实验结果和分析表明，该算法加密效果良好，具有很强的明密文敏感性，密钥空间大，能够抵御统计攻击、穷举攻击，具有较强的抗干扰能力，即便是攻击者知道加密所采用的混沌系统和具体的加密算法，但只要不知道完整的密钥，想要解密出原始图像也是比较困难的。该算法具有较高的安全性。

Digital image encryption algorithm based on four-dimension chaotic system

According to the characteristic of higher secrecy of high-dimension chaotic system,a new digital image encryption al-gorithm based on four-dimension chaotic system was proposed.The results and analysis demonstrate that the algorithm has good properties of encryption,a large space of keys,good statistical characteristics,strong anti-noise ability.It can resist for the exhaustion attack and count attack,even if the attacker knows chaotic system that is adopted and encryption algorithm,as long as not knowing t...