Secured transmission of sensitive images of skin diseases using steganography and cryptography

With the evolution of technology, wireless transmission of sensitive images especially images of skin disease has facilitated doctors to obtain updates regarding the current progress of the disease from various experts. But transmission of such images is vulnerable to serious threats and attacks. To protect the sensitive images from intrusion, certain security measures need to be adopted. LSB based encoding method has been proposed in this paper that utilizes DCT and pixel flipping techniques to form the stego-image. Stego-key generation method is also implemented to validate the authorized receiver during retrieval. The image of the skin disease is considered to be both cover image and stego-image. The receiver can retrieve the original image using key-based decryption algorithm, LSB, and pixel flipping method. The extensive experimental analysis is conducted to demonstrate the efficacy of the proposed method with existing ones.