A New Approach to Stegnography

Abstract

Steganography hides the fact that a message is being sent. It provides security. In this world full of intruders, security of information is the most vital concern. In this paper, we present a Steganography algorithm. Our approach is based on hiding message in an image file by selecting pixels using some mathematical formulation and replacing the last few bits of the pixel. The bit selection is also not obvious; the selection is decided again by some calculation. In our algorithm we try to ensure that there is minimum amount of distortion from the original image. We also use a symmetric key to ensure security of the message. To the best of our knowledge this approach can be used to hide data in an image file with great security and with a very small chance of detection.