A multi-layer windmill image retention encryption algorithm based on composite sequences and DNA
摘要
With the widespread application of multimedia information technology in cloud storage and secure communications, the secure transmission and storage of digital images have become a critical challenge.To address security challenges in digital images, this paper proposes a multi-layer windmill image encryption scheme integrating multidimensional chaos, quantum-inspired random walk, and DNA encoding. This approach employs chaotic sequences to drive quantum-inspired random walks for generating composite keys, thereby resolving the pseudo-randomness trap inherent in traditional chaotic encryption. By integrating multi-rule DNA encoding with mathematical matrix operations, it overcomes the limitations of single-base pairing, namely insufficient randomness and linearity defects. Furthermore, a multi-layer windmill-style error correction structure is designed to achieve 3/4 cropping attack resistance while enabling effective image reconstruction. Experiments demonstrate that this scheme possesses a key space exceeding 225⁶, information entropy approaching 8, and high sensitivity to both plaintext and keys (NPCR≈99.60%, UACI≈33.46%). It effectively resists statistical analysis, differential attacks, noise, and cropping attacks, exhibiting superior security compared to mainstream comparative algorithms.