The main driving
force is concern over protecting copyright; as audio, video and other
works become available in digital form, the ease with which perfect copies
can be made may lead to large-scale unauthorized copying, and this is of
great concern to the music, film, book and software publishing industries.
At the same time, moves by various governments to restrict the
availability of encryption services have motivated people to study methods
by which private messages can be embedded in seemingly innocuous cover
This book surveys recent research results in the fields of
watermarking and steganography, two disciplines generally referred to as
information hiding. Included are chapters about the following
1: Introduction to information hiding (Fabien A. P. Petitcolas)
gives an introduction to the field of information hiding, thereby
discussing the history of steganography and watermarking and possible
applications to modern communication systems.
2: Principles of steganography (Stefan Katzenbeisser)
introduces a model for steganographic communication (the "prisoners
problem") and discusses various steganographic protocols (such as pure
steganography, secret key steganography, public key steganography and
3: A survey of steganographic techniques (Neil F. Johnson and
Stefan Katzenbeisser) discusses several information hiding methods
useable for steganographic communication, among them substitution systems,
hiding methods in two-color images, transform domain techniques,
statistical steganography, distortion and cover generation techniques.
4: Steganalysis (Neil F. Johnson) introduces the concepts of
steganalysis---the task of detecting and possibly removing steganographic
information. Included is also an analysis of common steganographic tools.
5: Introduction to watermarking techniques (Martin Kutter and Frank
Hartung) introduces the requirements and design issues for
watermarking software. The authors also present possible applications for
watermarks and discuss methods for evaluating watermarking systems.
6: A survey of current watermarking techniques (Jean-Luc Dugelay
and Stéphane Roche) presents several design principles for
watermarking systems, among them the choice of host locations,
psychovisual aspects, the choice of a workspace (DFT, DCT, wavelet), the
format of the watermark bits (spread spectrum, low-frequency watermark
design), the watermark insertion operator and optimizations of the
7: Robustness of copyright marking systems (Scott Craver, Adrian
Perrig and Fabien A. P. Petitcolas) discusses the crucial issue of
watermark robustness to intentional attacks. The chapter includes a
taxonomy of possible attacks against watermarking systems, among them
protocol attacks like inversion, oracle attacks, limitations of WWW
spiders and system architecture issues.
8: Fingerprinting (Jong-Hyeon Lee) discusses principles and
applications of fingerprinting to the traitor tracing problem, among them
statistical fingerprinting, asymmetric fingerprinting and anonymous
9: Copyright on the Internet and watermarking (Stanley Lai and
Fabrizio Marongiu Buonaiuti) finally discusses watermarking systems
from a legal point of view and addresses various other aspects of
copyright law on the Internet.