摘要
针对激光数字图像在传输和存储过程中频繁遭受攻击,导致敏感信息泄露的严重问题,提出了一种基于改进Clifford混沌系统的激光数字图像分块加密方法。首先利用参数优化后的Clifford混沌系统对激光数字图像进行分块置乱,通过打乱图像像素的排列顺序,有效增加了图像信息的复杂性和抗攻击能力。其次,采用Logistic混沌映射算法对置乱后的图像子块进行加密处理,确保每个子块内的信息得到充分的混淆和扩散。最后,通过双随机相位编码技术对加密后的子块进行重组和二次加密,进一步提升了图像的整体安全性。实验结果表明,该方法在保护激光数字图像信息方面表现出色,加密后的图像信息安全性高,能够有效抵御各种攻击手段。同时,该方法的加密效果良好,加密过程高效且稳定。
A laser digital image block encryption method based on an improved Clifford chaotic system is proposed to address the serious problem of sensitive information leakage caused by frequent attacks on laser digital images during transmission and storage.Firstly,the Clifford chaotic system optimized by parameters is used to block and scramble laser digital images.By shuffling the arrangement order of image pixels,the complexity of image information and the ability to resist attacks are effectively increased.Secondly,the Logistic chaotic mapping algorithm is used to encrypt the scrambled image sub blocks,ensuring that the information within each sub block is sufficiently confused and diffused.Finally,the overall security of the image is further improved by recombining and re encrypting the encrypted sub blocks using double random phase encoding technology.The experimental results show that this method performs well in protecting laser digital image information,and the encrypted image information has high security,which can effectively resist various attack methods.Meanwhile,the encryption effect of this method is good,and the encryption process is efficient and stable.
作者
王晓惠
刘彦甲
WANG Xiaohui;LIU Yanjia(Shangqiu Institute of Technology,Shangqiu Henan 476000,China)
出处
《激光杂志》
北大核心
2025年第3期148-153,共6页
Laser Journal
基金
河南省科技厅科技攻关项目(No.242102210165)
商丘工学院校级科研项目(No.2023KYXM09)。
作者简介
王晓惠(1988-),女,硕士,副教授,研究方向:信号处理及智能控制。
