Research on Image Encryption Technology Based on Multi Chaotic Mapping

The image is vulnerable to human attack during transmission. Image information not only involves personal privacy, but even relates to national security. Therefore, more and more countries all over the world pay more attention to picture security. Here, a single chaotic encryption method cannot meet the current demand. A new image encryption scheme is designed by combining logistic mapping, sine mapping and DNA encoding. Experimental results show that this method has Fast encryption speed, large key space, strong anti attack ability, good robustness, reversible encryption methods and it also sensitive to initial value. So it is suitable for the field of digital information security, such as military, medical, political, cultural, etc.