9 papers
A Jigsaw Puzzle Solver-based Attack on Block-wise Image Encryption for Privacy-preserving DNNs
Tatsuya Chuman, Hitoshi Kiya
Privacy-preserving deep neural networks (DNNs) have been proposed for protecting data privacy in the cloud server. Although several encryption schemes for visually protection have…
Security Evaluation of Block-based Image Encryption for Vision Transformer against Jigsaw Puzzle Solver Attack
Tatsuya Chuman, Hitoshi Kiya
The aim of this paper is to evaluate the security of a block-based image encryption for the vision transformer against jigsaw puzzle solver attacks. The vision transformer, a model…
Block Scrambling Image Encryption Used in Combination with Data Augmentation for Privacy-Preserving DNNs
Tatsuya Chuman, Hitoshi Kiya
In this paper, we propose a novel learnable image encryption method for privacy-preserving deep neural networks (DNNs). The proposed method is carried out on the basis of block scr…
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…
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…