In this digital era, ensuring the security of data transmission is critically important. Digital data, especially image data, needs to be secured against unauthorized access. In this regards, this paper presents a robust image encryption scheme named as VisCrypt. VisCrypt introduces a novel key generation and block permutation technique with visual cryptography to effectively encrypt the input images. The proposed scheme utilizes a diffusion-confusion image encryption architecture. The diffusion phase consists of novel key generation and block permutation techniques. The proposed key generation module utilizes hyper-chaotic maps with nonlinear dynamical behavior to generate random sequences that undergo spiral permutations to generate complex and unpredictable keys. Moreover, in the novel block permutation technique the image is decomposed into four equalsize blocks where each block is permuted using the generated permutation keys. Furthermore, in the confusion phase, a modified dynamic substitution process is applied on the permuted images and after substitution, the final encrypted images in visually concealed to add extra layer of security. Extensive security analysis validates the effectiveness of proposed scheme by exhibiting ideal results for information entropy, correlation, homogeneity, contrast, and energy.
Citation
Khan, M. S., Ahmad, J., Ali, M., Al Dubai, A., Pitropakis, N., & Buchanan, W. J. (2024, July). VisCrypt: Image Encryption Featuring Novel Chaotic Key Generation and Block Permutation Techniques with Visual Cryptography. Presented at 2024 IEEE 7th International Conference on Advanced Technologies, Signal and Image Processing (ATSIP), Sousse, Tunisia
Presentation Conference Type
Conference Paper (published)
Conference Name
2024 IEEE 7th International Conference on Advanced Technologies, Signal and Image Processing (ATSIP)
Start Date
Jul 11, 2024
End Date
Jul 13, 2024
Acceptance Date
Apr 1, 2024
Online Publication Date
Aug 23, 2024
Publication Date
2024
Deposit Date
Oct 11, 2024
Publisher
Institute of Electrical and Electronics Engineers
Peer Reviewed
Peer Reviewed
Pages
376-381
Series ISSN
2687-878X
Book Title
2024 IEEE 7th International Conference on Advanced Technologies, Signal and Image Processing (ATSIP)
