An approach towards image, audio and video steganography

The growth of the Internet has paved the way for easy access to information, and has contributed to the rapid development of multimedia based applications. This has made security issues very crucial and challenging. Various types of media carry information like image, audio and video and protecting these from unauthorized access is an important area of active research. This paper proposes a methodology of image, audio and video steganography by converting the media type into a different form. In this paper we devised the use of steganography in such a way that the video intended to be encoded is segmented into frames. Each frame of the video is considered to be a single RGB image. The frames are then converted into respective number of sound files. Later the steganographed files (sound files) are decrypted and combined in the original sequence to retrieve back the video using the reverse procedure. Again ordinary sound files containing speech and music were also tried to encode into a RGB image, which was later retrieved by running the decoding procedure.