71 citations · 304 across the 98 of their papers we have counts for
8 papers · 2 filters
Grayscale-Based Image Encryption Considering Color Sub-sampling Operation for Encryption-then-Compression Systems
Warit Sirichotedumrong, Tatsuya Chuman, Hitoshi Kiya
A new grayscale-based block scrambling image encryption scheme is presented to enhance the security of Encryption-then-Compression (EtC) systems, which are used to securely transmi…
Compressible and Learnable Encryption for Untrusted Cloud Environments
Hitoshi Kiya
With the wide/rapid spread of distributed systems for information processing, such as cloud computing and social networking, not only transmission but also processing is done on th…
Encryption-then-Compression Systems using Grayscale-based Image Encryption for JPEG Images
Tatsuya Chuman, Warit Sirichotedumrong, Hitoshi Kiya
A block scrambling-based encryption scheme is presented to enhance the security of Encryption-then-Compression (EtC) systems with JPEG compression, which allow us to securely trans…
Compression Performance of Grayscale-based Image Encryption for Encryption-then-Compression Systems
Warit Sirichotedumrong, Tatsuya Chuman, Hitoshi Kiya
This paper considers a new grayscale-based image encryption for Encryption-then-Compression (EtC) systems with JPEG compression. Firstly, generation methods of grayscale-based imag…
Image Manipulation Specifications on Social Networking Services for Encryption-then-Compression Systems
Tatsuya Chuman, Kenta Iida, Warit Sirichotedumrong +1
Encryption-then-Compression (EtC) systems have been proposed to securely transmit images through an untrusted channel provider. In this study, EtC systems were applied to social me…
Privacy-Preserving SVM Computing by Using Random Unitary Transformation
Takahiro Maekawa, Takayuki Nakachi, Sayaka Shiota +1
A privacy-preserving Support Vector Machine (SVM) computing scheme is proposed in this paper. Cloud computing has been spreading in many fields. However, the cloud computing has so…
Security Evaluation for Block Scrambling-Based Image Encryption Including JPEG Distortion against Jigsaw Puzzle Solver Attacks
Tatsuya Chuman, Hitoshi Kiya
Encryption-then-Compression (EtC) systems have been considered for the user-controllable privacy protection of social media like Twitter. The aim of this paper is to evaluate the s…
Grayscale-based Block Scrambling Image Encryption for Social Networking Services
Warit Sirichotedumrong, Tatsuya Chuman, Shoko Imaizumi +1
This paper proposes a new block scrambling encryption scheme that enhances the security of encryption-then-compression (EtC) systems for JPEG images, which are used, for example, t…