Ying Liu: Cryptanalysis of an Image Encryption System Based on Cellular Automata

In recent years, much efforts have been made to utilize Cellular Automata, CA, for cryptography due to its intrinsic nature of simple infrastructure and complex behavior. A CA-based image encryption system was presented by Chen et al. in [20-22]. Although it outperforms some traditional cryptosystems in speed and key size, we find that it is defective and vulnerable to chosen-plaintext attack. We propose some minor modifications and further investigate their effects on the security and performance of the cipher.