A Color Image Encryption Method Based on Cross-Scanning and Inter-Plane Shuffling

This paper proposes a new color image encryption method based on cross-traversal and inter-plane disruption. First, the SHA-512 hash function is used to generate the key from the plaintext image, and chaotic sequences A1, A2 and A3 are produced using the one-dimensional Logistic system, one-dimensional Sine mapping system and two-dimensional Henon mapping system. Then, cross-traversal is performed on the plaintext image, and intra-row disruption and inter-column disruption are carried out in turn using chaotic sequence A1 to complete the first round of disruption. Subsequently, the three bit planes are rearranged in descending order, i.e. inter-plane disruption, to complete the second round of disruption. Finally, diffusion is carried out in the diffusion stage using chaotic sequences A2 and A3 in combination with XOR operation to complete encryption. Experimental outcomes demonstrate the exceptional performance and robust security of the proposed algorithm. It effectively withstands prevalent assaults, including statistical and differential attacks, while maintaining impressive time efficiency.