Medical Image Compression and Encryption using Chaos based DNA Cryptography

In digital communication, the transmission of medical images over communication network is very explosive. We need a communication system to transmit the medical information rapidly and securely. In this manuscript, we propose a cryptosystem with novel encoding strategy and lossless compression technique. The chaos based DNA cryptography is used to enrich security of medical images. The lossless Discrete Haar Wavelet Transform is used to reduce space and time efficiency during transmission. The cryptanalysis proves that proposed cryptosystem is secure against different types of attacks. The compression ratio and pixel comparison is performed to verify the similarity of retained medical image.