QRCI Based Quantum Color Image Encryption
Chia-Ho Lin, Chin‐Chi Cheng, Chih‐Wei Tang · 2024
Security of quantum image encryption is ensured by the no-cloning theorem. Most existing high-secure quantum image encryption methods are designed for grayscale images. Thus, this paper proposes a quantum color image encryption method. It combines efficient-storage QRCI (Quantum Representation model of Color digital Images) representation and high-security quantum image encryption. The first-round encryption combines scrambling and diffusion while the second-round encryption adopts diffusion only. Tests results show that the proposed scheme achieves high NPCR and UACI. The encrypted image has much uniform color distribution than the original image.