Work

A chaotic thumbnail-preserving encryption scheme with optimal block size

Year: 2025

Type: article

Abstract: Thumbnail-preserving encryption (TPE) schemes have been continuously proposed in recent years. It is well known that the thumbnail block size affects the usability and privacy of ciphertext images, but there is no definitive method for determining block size. In this paper, firstly, we propose a new chaotic model called the Delayed Logarithmic Logistic Chaotic Model (DLLM). The simulation experiments show that this model has excellent chaotic properties and can generate complex pseudo-random sequences. Then, we design a DLLM-based TPE scheme. It makes each ciphertext image achieve a good balance of usability and privacy by expanding the range of block size and using a face comparison algorithm to determine the optimal block size.

Source: Journal of King Saud University - Computer and Information Sciences

DOI: 10.1007/s44443-025-00209-w

Authors: Gengsheng Deng, Weijie Xu, Bingxue Jin, Rongqing Lei, Lingfeng Liu

Institution: Nanchang University

Language: English

Topic: Chaos-based Image/Signal Encryption

Subfield: Computer Vision and Pattern Recognition

Field: Computer Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,990

Funders: National Natural Science Foundation of China, Key Research and Development Program of Jiangxi Province