Encryption-Then-Compression Systems Using Grayscale-Based Image Encryption for JPEG Images
Encryption-Then-Compression Systems Using Grayscale-Based Image Encryption for JPEG Images
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DOI：
10.1109/tifs.2018.2881677
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发表时间：
2019-06-01
影响因子：
6.8
通讯作者：
Kiya, Hitoshi
中科院分区：
文献类型：
--
作者：
Chuman, Tatsuya;Sirichotedumrong, Warit;Kiya, Hitoshi
提出了一种基于块置乱的加密方案来增强具有JPEG压缩的加密-然后压缩（EtC）系统的安全性，这允许我们通过不可信的通道提供商（例如社交网络服务提供商）安全地传输图像。所提出的方案使得能够使用比传统方案更小的块大小和更大数量的块。即使原始图像具有三个颜色通道，由于使用灰度图像，使用所提出的方案加密的图像包括较少的颜色信息。这些功能增强了对各种攻击的安全性，如拼图游戏解决方案和暴力攻击。在实验中，对拼图求解器攻击的安全性进行了评估。将加密图像上传到Facebook和Twitter，然后从Facebook和Twitter下载，结果表明，所提出的方案是有效的EtC系统。
A block scrambling-based encryption scheme is presented to enhance the security of Encryption-thenCompression (EtC) systems with JPEG compression, which allow us to securely transmit the images through an untrusted channel provider, such as social network service providers. The proposed scheme enables the use of a smaller block size and a larger number of blocks than the conventional scheme. Images encrypted using the proposed scheme include less color information due to the use of grayscale images even when the original image has three color channels. These features enhance security against various attacks such as jigsaw puzzle solver and brute-force attacks. In an experiment, the security against jigsaw puzzle solver attacks is evaluated. Encrypted images were uploaded to and then downloaded from Facebook and Twitter, and the results demonstrated that the proposed scheme is effective for EtC systems.