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Colour Image Encryption Algorithm With Quantum Coding

In image processing, quantum mechanics has wide applications. This paper proposes a lower-complexity encryption scheme based on Novel Enhanced Quantum Representation (NEQR) and bit-level adjacent exchange operations. The chaotic henon map and quantum coding were used to create this work. The image is further diffused by XORing key streams from the henon map. This scheme further undergoes a scrambling procedure using the key generated from SHA-256. The encryption procedure done step by step is applied separately on three channels R, G, and B, of a color image. Finally, performance analysis and simulation results confirm that the encryption scheme is robust and secure.