Abstract of FKI-252-05

Document-Name:  fki-252-05
Title:		Content-Aware Steganography: About Lazy Prisoners and Narrow-Minded Wardens
Authors:	Richard Bergmair, Stefan Katzenbeisser
Revision-Date:	December 2005
Category:	Technical Report (Forschungsberichte Künstliche Intelligenz)
Abstract:	We introduce content-aware steganography as a new paradigm of
		steganography stemming from a shift in perspectives towards the
		objects of steganography. In particular, we abandon the point of
		view that steganographic objects can be considered pieces of
		data, suggesting that they should rather be considered
		pieces of information. We provide some evidence to suggest
		that this shift in perspectives is in fact necessary, and
		pinpoint a semantic problem that has not received
		sufficient attention in the past. We also propose a solution to
		this problem, by putting forward a new kind of steganography
		that employs human interactive proofs as a security primitive.
Keywords:	content-aware, semantic, steganography, information hiding,
		cryptography, human interactive proof, HIP, CAPTCHA, human,
		machine, artificial intelligence, AI, AI-complete security
		primitive
Size:		22 pages
Language:	English
ISSN:		0941-6358
Copyright:      The ``Forschungsberichte Künstliche Intelligenz''
                series includes primarily preliminary publications,
                specialized partial results, and supplementary
                material. In the interest of a subsequent final
                publication these reports should not be copied. All
                rights and the responsibility for the contents of the
                report are with the authors, who would appreciate
                critical comments.

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