摘要
针对彩色图像在加密过程中数据量大、相邻像素相关性强及冗余度高等缺陷,提出基于新四维超混沌的彩色图像加密算法。利用混沌性能更好的四维超混沌系统与反向传播神经网络结合进行序列融合运算,生成伪随机性更好的融合序列作为密钥流;利用密钥流对彩色图像像素块进行位置置乱及像素扩散运算,得到最终的密文图像。仿真计算结果表明,该加密算法具有良好的安全性及抗攻击能力。
Aiming at the large amount of data,strong correlation between adjacent pixels and high redundancy in the process of color image encryption,a color image encryption algorithm based on four-dimensional hyperchaotic system was proposed.The four-dimensional hyperchaotic system with better chaotic performance was combined with back propagation neural network for sequence fusion operation,the results with better pseudo randomness was generated as key stream.The key stream was used to scramble and spread the color image pixel blocks to obtain the ciphertext image.The simulation results show that the encryption algorithm has good security performances and anti-attack ability.
作者
方鹏飞
黄陆光
娄苗苗
蒋昆
吴成茂
FANG Peng-fei;HUANG Lu-guang;LOU Miao-miao;JIANG Kun;WU Cheng-mao(Department of Information,The First Affiliated Hospital of Air Force Medical University,Xi’an 710032,China;School of Automation and Information Engineering,Xi’an University of Technology,Xi’an 710048,China;School of Electronic Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710061,China)
出处
《计算机工程与设计》
北大核心
2022年第2期361-369,共9页
Computer Engineering and Design
关键词
超混沌系统
反向传播神经网络
彩色图像
置乱扩散
图像加密
hyper chaotic system
back propagation neural network
color image
scrambling diffusion
image encryption
