Partial encryption of medical images by dual DNA addition using DNA encoding

Increasing need for tele-medicine in healthcare industry created a great necessity to secure and transmitted data among medical centres. In this paper, partial encryption of medical images based on dual DNA addition with combined chaotic map are proposed. Firstly carried out the DNA encoding of gray scale image using different eight kinds of pattern. Then perform DNA addition with chaotic DNA sequence generated from chaotic map with a initial key. By changing the DNA patterns of chaotic DNA sequence and performs DNA addition to get a different Partial Encrypted Images(PIE). Simulation result shows that the proposed algorithm suitable for the medical information security.