Digital Steganography: Hiding Data within Data
IEEE Internet Computing
Hiding encrypted speech using steganography
MIV'07 Proceedings of the 7th Conference on 7th WSEAS International Conference on Multimedia, Internet & Video Technologies - Volume 7
On the limits of steganography
IEEE Journal on Selected Areas in Communications
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Define four types of objects: message-object, intermediate-object, cover-object, and stego-object. All objects are represented by a finite set of elements, where each element is in turn represented by a finite sequence of bits. The bits make the primitive components of the representation. A multimedia (MM) object can be in one of several classes: text, picture, image, audio, or video. MM objects are used for human-human, human-machine, or machine-machine communication. Hence, MM objects have storage and transmission requirements. For example, an audio object can be represented in several formats, e.g., wav and MP3. Text objects can be represented using an image, ASCII or Unicode, among other representations. MM objects can be published or hidden. The focus of this paper is two fold; to develop an abstract multi-level model; and to use a published object to conceal (hide) a secret object using the proposed model. An example of hiding a text message-object, represented by a black and white (B&W) image object, into a gray-image (intermediate-object, or decoy) that is then hidden in a color image object in RGB-color format, is given.