基于混沌YOLO v4的共享图像选择性加密方法  

Selective Shared Image Encryption Method Based on Chaotic System and YOLO v4

作　　者：张国梅 马琳娟 张福泉 李庆珍[3] ZHANG Guo-mei;MA Lin-juan;ZHANG Fu-quan;LI Qing-zhen(School of Computer Science and Engineering,Guangzhou Institute of Science and Technology,Guangzhou 510540,China;School of Computer Science&Technology,Beijing Institute of Technology,Beijing 100081,China;Institute of Data Rule of Law,China University of Political Science and Law,Beijing 102249,China)

机构地区：[1]广州理工学院计算机科学与工程学院,广州510540 [2]北京理工大学计算机学院,北京100081 [3]中国政法大学数据法治研究院,北京102249

出　　处：《计算机科学》2022年第12期368-373,共6页Computer Science

基　　金：国家自然科学基金(61601189);广东省普通高校科研项目(2019KTSCX243,2021ZDZX1070)。

摘　　要：针对社交平台共享图像的信息安全问题,提出了基于混沌YOLO v4和用户选择感兴趣区域(ROI)的图像加密方案。首先,利用YOLO v4自动检测图像中的目标,提供要加密的候选包围框;然后,利用cosine和polynomial映射的线性组合加密算法对用户选定的图像区域进行加密,使得只有合法授权用户才能访问共享图像的敏感信息。通过密钥发放和授权机制,实现对第三方转发图像中敏感信息的保护。实验统计和安全分析结果证明,所提方案能够抵御各种攻击,提供高度安全性,且处理速度能够满足在线用户的实时需求。Aiming at the information security problem of sharing images on social platforms,a selective region of interest(ROI)image encryption scheme based on YOLO v4 and hybrid chaotic map encryption is proposed.By utilizing YOLO v4,the uploaded image is automatically detected and the candidate bounding boxes to be encrypted are provided.Then the image areas selected by user are encrypted with the proposed hybrid encryption algorithm combining cosine and polynomial mapping,so that only legally authorized users can access the sensitive information of the shared image.Through the secret key issuing and authorization mecha-nism,the protection of sensitive information of the image forwarded by a third party is realized.Statistical and security analysis results prove that the proposed scheme can resist various attacks,and the processing speed can meet the real-time needs of online users.

关 键 词：图像加密 共享图像 混沌映射 YOLO V4 感兴趣区域 

分 类 号：TP309[自动化与计算机技术—计算机系统结构] TP751[自动化与计算机技术—计算机科学与技术]