摘要
为了保证图像信息的安全,提出了一种基于量子混沌映射和Chen超混沌映射的图像加密算法。首先,采用Chen超混沌映射产生随机序列对图像进行行列置乱操作,使图像充分置乱;然后,采用量子Logistic映射产生随机序列对图像的进行扩散加密,最终得到密文图像。相对于经典混沌映射,量子混沌映射随机性更好,初值敏感性更强,解决了经典Logistic混沌的吸引子问题,很大程度上增强了加密算法的安全性。实验结果表明,加密后的图像直方图更为平滑,图像相邻像素相关性低,能有效抵抗统计攻击和差分攻击。
In order to ensure the security of image information,an image encryption algorithm based on quantum chaotic map and Chen’shyperchaotic map is proposed.Firstly,thechaotic sequencesgeneratedby the Chen’schaotic mapare used to scramble the pixels and make the image fully dispersed.Next the quantum logistic map is used to generate random sequences toachieve pixel diffusion,and thenthe encrypted image is obtained.By contrast,quantum chaotic map has better randomness and strongerinitial valuesensitivity than classical chaotic map,and it can solve the attractor problem of classical logistic chaotic map,which greatly enhance the security of the encryption algorithm.The experimental results show that thehistogram of encrypted image is smoother,the adjacent pixels of the image with low correlation.Through these experiments we have determined that the algorithm can effectively resist statistical attacks and differential attacks.
作者
张晓宇
张健
ZHANG Xiao-yu;ZHANG Jian(The 47^(th)Institute of China Electronics Technology Group Corporation,Shenyang 110000,China;Wuxi Vocational college of science and technology,Wuxi 214000,China)
出处
《中国电子科学研究院学报》
北大核心
2021年第6期582-586,共5页
Journal of China Academy of Electronics and Information Technology
关键词
量子混沌
Chen超混沌
图像加密
quantum chaos
Chen’shyperchaotic map
image encryption