结合分数Hartley变换和复用技术的图像加密算法

摘要

通过初等数学运算对彩色图像的RGB三个分量进行复用,并结合基于分数哈特莱变换的双随机相位对其进行单通道加密.加密算法的密文不是一幅彩色图像,而是一复数矩阵.研究表明,该加密算法加密过程简单,密钥选择性大,且有较大的密钥空间和较高的安全性.%The RGB components of a color image are multiplexed through elementary mathematical steps. Subsequently the single-channel multiplexed image is encrypted by the double random phase based on the fractional Hartley transform. The ciphertext of this encryption algorithm is not a color image but a complex matrix. It is shown that the encryption algorithm has a simple encryption process, enough keys to be chosen with large key space and high security.