A Secured Communication Based on Adaptive Steganography

Abstract: Steganography is an art of sending hidden data or secret messages over a public channel so that a third party cannot detect the presence of the secret messages. The goal of steganography is different from classical encryption, which seeks to conceal the content of secret messages; steganography is about hiding the very existence of the secret messages. Modern steganography is generally understood to deal with electronic media rather than physical objects. There have been numerous proposals for protocols to hide data in channels containing pictures, video, audio and even typeset text. A steganographic method of embedding textual information in an audio image and then to the audio file is presented in this project. In the proposed technique, first an image is selected after that we have to take the secret text and by using Adaptive LSB algorithm have to hide the secret text in that image. This stego image again hidden into the audio file. Based on LSB algorithm has to hide the stego image into the audio file. This audio file is sampled and then an appropriate bit of each alternate sample is altered to embed the textual information as well as an image. As a steganographic approach the perceptual quality of the host audio signal and host image was not to be degraded.

Keywords: Steganography, Embedding, LSB algorithm.