A Review on Trending Cryptography Approaches for Security In Images

As the whole world is revolutionized with the advent of internet services and improved communication facilities. Now people prefer to consult their doctor by using the internet facilities. To communicate with the doctor for diagnosis and treatment of patient from the distant location by using the telecommunication services is known as telemedicine. In telemedicine technique the information related to patient is transmitted over the open network. This information is generally comprised of images, audio, video etc. Now in the open network this information can be easily accessed and altered by the malicious users. Therefore it is required to protect the sensitive data transferred over the network. In this paper the medical image encryption techniques are discussed. Cryptography in medical images may be described as encoding and decoding methods implemented on the medical images to hide the information in cover image so that only authorized user will able to access it. Various types of cryptography methods are explained in this paper along with different goals of cryptography.