Exploring quantum security by using S-box and Hilbert scrambling in image encryption

Traditional encryption methods face major difficulties from the growth of quantum computing, requiring the study of quantum-resistant cryptographic approaches. This study explores the combination of S-box (Substitution-box) conversions and Hilbert scrambling in image encryption, bringing ahead a hybrid technique that focuses on refining quantum security. Because of their strong replacement abilities, S-boxes enhance encryption’s non-linearity and confusion properties. Meanwhile, Hilbert scrambling adds another layer of diffusion by reordering pixels yet preserving the spatial locality of picture information by utilizing the Hilbert curve. Integrating these two techniques, we want to develop an encryption system resilient to conventional attacks and also remain strong in the face of quantum threats. The suggested technique’s strength, computational efficiency, and security are evaluated from several experiments carried out on different image datasets. The findings indicate the importance of image encryption in the context of quantum computing, demonstrating that the proposed technique greatly improves the security of encrypted images.