An attack with known image to an image cryptosystem based on general cat map
Chenhui Jin · Journal of China Institute of Communications · 2005
We proved that the encryption algorithm proposed in An image cryptosystem based on general cat map is insecure in the image-known attack. The equivalent key of this encryption algorithm can be found by attack algorithm based on the affine property of functions used by the algorithm. The complexity of the attack is 2()ON。