Cellular Automata (CA) can exhibit fascinatingly complex behavior by dealing with the relations between the part and the whole. Due to the universality of CA model
many applications has been found in traditional cryptography and image processing. Combined with Cellular Automata Transforms (CAT) compression technologies
we propose an image encryption approach with enhanced security and much larger key space based on sequential CA The proposed image encryption scheme is suitable for optical realization based on the characteristics of simple parallelism structure of CA and satisfies the characteristics of convenient realization