A Novel Diffusion-Permutation Image Encryption Scheme Based on Spatiotemporal Chaos
Gang Xu, Xuna Miao, Yafeng Zheng · DOAJ (DOAJ: Directory of Open Access Journals) · 2013
The spatiotemporal chaos possesses better properties than simple chaotic system, which has attracted more and more attention by the researchers in the image encryption field. This paper presents a novel image encryption scheme based on spatiotemporal chaos. The algorithm uses the spatiotemporal chaos to diffuse plain image and an Arnold map shuffle the positions of pixels. Test results and security analysis not only show that the scheme is characteristic of excellent sensitivity to the original image and keys, large secret key space and high expansibility, but also has excellent effective encryption and strong anti-attacking performance.