Srihari Sridharan
Application of Cryptography and Randomized Spatial Domain Steganography for Information Hiding in Medical Images
Steganography is the art and
science of writing hidden messages in such a way that no one apart from the
intended recipient knows of the existence of the message; this is in contrast to
cryptography, where the existence of the message itself is not disguised, but
the content is obscured. Medical information about the patient is very sensitive
and security solutions are needed to make the information secure during
transmission and distribution. This paper proposes an image steganography as a
means to hide this secret information inside the image. The proposed method
ensures that there is minimal change in the medical image since any degradation
will reduce the clinical value of the image. The proposed method encodes the
data into the image in a randomized manner. This paper proposes a framework for
data embedding using hashing, encryption and randomization, where in other
hashing, encryption and randomization techniques can be plugged into the model
as per security needs.