基于混沌时间序列的图像加密算法设计与实现  

Design and implementation of image encryption algorithm based on chaotic time series

作　　者：蔡敏[1] 尚钦明[1] 孟晓燕[1] CAI Min;SHANG Qinming;MENG Xiaoyan(Qingdao Huanghai University,Qingdao 266427,China)

机构地区：[1]青岛黄海学院,山东青岛266427

出　　处：《现代电子技术》2021年第5期47-51,共5页Modern Electronics Technique

摘　　要：针对当前图像加密算法存在的安全性差、抗攻击能力弱等缺陷,以获得好的图像加密结果为目标,提出一种基于混沌时间序列的图像加密算法。首先对当前图像加密算法的研究进展进行分析,找到存在的难题,然后通过混沌系统产生混沌时间序列,采用混沌时间序列对图像像素进行置乱操作,打扰图像原始像素之间的联系,最后进行图像加密算法的仿真测试。结果表明,通过该算法加密的图像,原始图像和加密后图像通过肉眼无法找到它们之间的相关性,可以有效地保护图像的信息安全,提高了抗攻击能力,而且图像加密效果要明显优于其他图像加密算法。The current image encryption algorithms have the shortcomings of poor security and weak anti⁃attack ability.Therefore,an image encryption algorithm based on chaotic time series is proposed to obtain better image encryption results.The research progress for the current image encryption algorithms is analyzed to find out the existing difficulties.And then,chaotic system is used to generate the chaotic time series,which are used to perform scramble operation for image pixels,so as to dis⁃turb the relations among the original pixels.Finally,simulation tests of the image encryption algorithm were carried out.The re⁃sults show that the correlation between the original image and the encrypted image obtained by the proposed algorithm can not be found by naked eyes,so the information security of the image can be effectively realized.It can be seen from the tests that the anti⁃attack ability of the algorithm is improved,and its effect of image encryption is obviously better than that of other image encryption algorithms.

关 键 词：图像加密 混沌时间序列 图像信息保护 像素置乱操作 抗攻击能力 仿真测试 

分 类 号：TN911.1-34[电子电信—通信与信息系统] TP309[电子电信—信息与通信工程]