摘要
为了解决遥感图像在开放网络环境及共享服务中的信息安全问题,提出利用Zigzag变换和脱氧核糖核酸(DNA)序列,并结合组合的超混沌系统对彩色遥感图像进行加密。在加密过程中,根据遥感图像特点,利用改进的Zigzag变换对多通道遥感图像进行置乱,再根据组合混沌系统生成以像素为单位的DNA编码矩阵和运算方法矩阵,加以运算完成扩散过程,并融合成生成密文图像。实验结果和安全性分析表明,与其他遥感图像加密算法对比,该方法密钥空间足够大,像素间相关性较低,灰度直方图分布均匀,密钥敏感性较强,有良好的加密效果和较强抵御攻击能力,可以适用各种多通道遥感图像的加密。
In order to solve the information security of remote sensing image in open network environment and shared services,the use of Zigzag transformation and deoxyribonucleic acid(DNA)sequences in combination with the integrated hyperchaotic system to encrypt the color remote sensing image is proposed.In the encryption process,the improved Zigzag transformation is used to scramble the multi-channel remote sensing image according to the characteristics of the remote sensing image;and based on the pixel-based DNA coding matrix and operation method matrix generated by the integrated hyperchaotic system,plus the completion of the diffusion process by arithmetic,the ciphertext image is fused to generate.The experimental results and safety analysis have shown that,the method has enough key space,low correlation between pixels,uniform distribution of gray histogram,strong key sensitivity,good encryption effect and strong ability to resist attacks,and can be applied to various multi-channel remote sensing image encryption,after comparison with other remote sensing image encryption algorithms.
作者
邢开云
冯小虎
韩琦
Xing Kaiyun;Feng Xiaohu;Han Qi(National Satellite Meteorological Center of China Meteorological Administration,Beijing 100080,China)
出处
《电子测量技术》
2020年第11期117-126,共10页
Electronic Measurement Technology
基金
国家重点研发计划(2018YFC1507803)项目资助
关键词
遥感彩色图像
图像加密
Zigzag变换
脱氧核糖核酸
超混沌系统
remote sensing color image
image encryption
Zigzag transformation
deoxyribonucleic acid
hyperchaotic system
