A Random Steganographic Technique Using Discrete Wavelet Transform

Digital steganography provides a form of security that hides the very existence of a secret message inside a cover. No one apart from the sender and the receiver knows the existence of the secret message [Vijay and Kumar (2014). International Journal of Innovative Research in Science, Engineering and Technology 3:1207]. Information hiding is done in the spatial or the transform domain. The specialty of spatial domain techniques is that they are imperceptible, but do not withstand against attacks. Transform domain techniques are difficult to implement but have the added feature of robustness against attacks. In this article, we propose a new random embedding technique that uses transform domain embedding using discrete wavelet transform to achieve greater embedding capacity without compromising on imperceptibility and robustness.