Image Encryption Technology Based on Composite Chaotic System and Symmetric Encryption Algorithm

摘要

An image encryption technology based on multi-dimension chaotic system, spatiotemporal chaotic theory and traditional symmetric encryption algorithm is presented. The scrambling transformation was completed with multi-dimension chaotic system first. Then spatiotemporal chaotic theory was used to deal with gray transformation for each pixel. DES Algorithm was applied to implement image encryption at last. Theoretical analyses and simulated experiment show that the proposed image encryption scheme provides perfect results, larger key space and higher security, so this encryption system has excellent performance against many kinds of attacks.