A New Image Encryption Method with Hybrid and Reversible Cellular Automata

Cryptography is one of the most important ways of information security in passive defence. In this paper، a new image encryption method using reversible and hybrid cellular automata is presented. Since four most significant bits of each pixel have main information of an image، a hybrid cellular automata encrypts this bitst. Then، a reversible cellular automata are applied to whole of the pixels and finally، cellular automata scrambles the image bits. Using a series of standard tests، the suggested method was compared with some other methods to assess the efficiency of the algorithm. The experimental results show that the suggested algorithm has satisfactory performance in terms of quantitative assessment from some other schemes.