Spatiotemporal chaotic image cryptography
Guohui Li · Computer Engineering and Applications Journal · 2009
To solve the drawbacks of some chaotic image encryption schemes,a new image encryption based on spatiotemporal chaos and Arnold mapping is presented.The feedback mechanism is introduced into the pixels'encryption procedure;As a result,the generation of keystream is related with the secret key and plaintext;therefore the encryption scheme can resist the chosen plaintext attack effectively.In addition,the combination of permutation and diffusion(pixel-value encryption)for several rounds embodies the advantage of product cipher,which makes the equivalent secret key attack fail.At last,analysis and experiments prove the validity of the scheme.