Medical image encryption algorithm based on hyper‐chaotic system and DNA coding

With the international development of medical service informatisation, information sharing has become key standard to measure degree informatisation. In this process, it is important ensure security patients' such as records, examination reports, images and so on. article, an image encryption scheme based on Secure Hash Algorithm 3 (SHA-3), DNA coding high dimensional chaos system proposed promote level in processes over network. First, SHA-3 algorithm used calculate hash value input image, result taken initial hyper-chaotic system. Second, intensity converted into a serial binary digital stream. Third, pseudo-random sequence generated by 4-dimensional perturb bit stream globally achieve purpose hiding effective image. During operation sequence, algebraic complementary operations are performed encoding values enhance performance. Finally, simulations have been applied open-source database, results demonstrate obvious effectiveness robustness noise clipping attacks.