彩色数字图像的混沌加密和解密方法研究

由于数字图像自身的一些固有特点，传统加密算法不太适合数字图像加密。针对彩色数字图像的结构特征，根据数字图像置乱加密原理，利用离散混沌序列的随机性和对初始条件值极其敏感等特性，研究了彩色数字图像的混沌加密和解密方法。研究结果表明，该图像加密和解密方法不仅使图像加密和解密运算简单快捷，而且能够满足图像存储和传榆的安全性要求。

Researches on Chaotic Encryption and Decryption of Color Digital Image

Because digital image has its inherent characteristics, traditional encryption algorithms don＇t very well adapt to digital image encryption. In light of the structural characteristic of color digital image, according to the encrypting principle of digital image scrambling, and using the characteristics of discrete chaotic sequence, such as randominess, extreme sensitivity to initial condition values, and so on, both the encryption and decryption of color digital image are studied. Research results have shown that this kind of encryption and decryption of image is not only simple and fast in image encryption and decryption, but also satisfies the security requirement for image transmission and storage.