计算机与现代化Issue(7)：27-29,33,4.DOI:10.3969/j.issn.1006-2475.2011.07.008
基于混沌系统和分数阶傅里叶变换的图像加密算法
An Image Encryption Algorithm Based on Chaotic System and Fractional Fourier Transform
摘要
Abstract
An image encryption algorithm based on chaotic system and fractional Fourier transform is proposed. The image encryption process includes the two steps; first the image is encrypted by using confusion matrix which is generated by chaotic system, then the confusion image is encrypted by employing Fractional Fourier domain double random phase, finally the cipher image is obtained. The security of the proposed algorithm depends on the sensitivity to initial conditions of chaotic system, the randomness of phase mask and the orders of FRFT. Theoretical analysis and experimental results demonstrate that the algorithm is favorable.关键词
图像加密/混沌系统/分数阶傅里叶变换/置乱矩阵/双随机相位Key words
image encryption/ chaotic system/ fractional Fourier transform/ confusion matrix/ double random phase分类
信息技术与安全科学引用本文复制引用
左敬龙,余桂兰,崔得龙..基于混沌系统和分数阶傅里叶变换的图像加密算法[J].计算机与现代化,2011,(7):27-29,33,4.基金项目
茂名市重点科技计划基金资助项目(203624) （203624）
