基于半导体超晶格物理不可克隆函数和缩略图保持加密的图像加密方案  

Image Encryption Scheme Based on Semiconductor Superlattice Physical Unclonable Function and Thumbnail⁃Preserving Encryption

作　　者：郭维剀 高献伟 索珠峰 GUO Weikai;GAO Xianwei;SUO Zhufeng(Department of Electronic and Communication Engineering,Beijing Electronic Science and Technology Institute,Beijing 100070,P.R.China;School of Cyberspace Security,Beijing University of Post and Telecommunications,Beijing 100876,China)

机构地区：[1]北京电子科技学院电子与通信工程系,北京100070 [2]北京邮电大学网络空间安全学院,北京100876

出　　处：《北京电子科技学院学报》2024年第4期55-65,共11页Journal of Beijing Electronic Science And Technology Institute

基　　金：中央高校基本科研业务费资金资助(项目编号:328202245)。

摘　　要：为了平衡图像的可用性和隐私性,研究者提出了缩略图保持加密。然而,现有的缩略图保持加密方案存在加密图像暴露过多信息以及无法有效在公共信道进行密钥分发问题。为了解决上述问题,本文提出了一种基于半导体超晶格物理不可克隆函数和缩略图保持加密的图像加密方案。首先,该方案利用半导体超晶格物理不可克隆函数产生密钥种子,由于半导体超晶格物理不可克隆函数的不可预测性,密钥种子能在公开信道上进行密钥分发。随后,为了降低密钥在服务器的存储对密钥种子使用二维无限坍缩进行扩展生成密钥流。最后,扩展生成的密钥流对图片进行替换-置乱加密,实现缩略图保持加密。实验结果表明,在隐私性和可用性方面经受住了实验评估。同时,在图像加密质量、安全性分析和鲁棒性分析结果也表明所提方案具有较强的竞争力。In order to balance the usability and privacy of images,researchers proposed thumbnail⁃pre⁃serving encryption.However,existing thumbnail⁃preserving encryption schemes have problems such as excessive exposure of encrypted images and ineffective key management.To solve these problems,this paper proposes an image encryption scheme based on semiconductor superlattice physical unclonable function and thumbnail⁃preserving encryption.First,the scheme uses the semiconductor superlattice physical unclonable function to generate the key seed,as the semiconductor superlattice physical un⁃clonable function is unpredictable,the key seed can be distributed over a public channel.Then,in or⁃der to reduce the storage required for the use of the key seed,a two⁃dimensional infinite collapse is used to expand the key stream.Finally,the expanded generated key stream is used to replace and scramble encrypt the image,achieving thumbnail⁃preserving encryption.The experimental results show that the proposed scheme has passed the experimental evaluation in terms of privacy and usability.Meanwhile,the results of image encryption quality,security analysis,and robustness analysis also show that the proposed scheme has strong competitiveness.

关 键 词：缩略图保持加密 半导体超晶格物理不可克隆函数 平衡可用性和隐私性 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]