Cryptanalysis of a Substitution-Diffusion Based Image Cipher Using Chaotic Standard and Logistic Map

A substitution-diffusion based image cipher using chaotic standard and logistic maps was proposed recently. However, the cipher can be broken with a simple method by using only one known plain and cipher image pair. The attacking process need not to be complex because of the two vital defects of the encryption algorithm. Suggestions for improving the security of the algorithm are also provided.