رمزنگاری تصاویر با استفاده از اتوماتای سلولی برگشت پذیر

In this paper, a new structure for image encryption using recursive cellular automatais presented. The image encryption contains three recursive cellular automata in three steps, individually. At the first step, the image is blocked and the pixels are substituted. In the next step, pixels are scrambledby the second cellular automata and at the last step, the blocks are attachedtogether and the pixels substitute by the third cellular automata. Due to reversibility of cellular automata, the decryption of the image is possible by doing the steps reversely. The experimental results show that the encrypted image is not comprehend visually, also this algorithmhas satisfactory performance in terms of quantitative assessment from some other schemes.