Abstract
Digital watermarking is well known as enabling technology
to prove ownership on copyrighted material, detect originators of
illegally made copies, monitor the usage of the copyrighted
multimedia data and analyze the spread spectrum of the data over
networks and servers. Research has shown that data hiding
techniques can be applied successfully to other application areas
like manipulations recognition. In this paper, we show our
innovative approach for integrating watermark and cryptography
based methods within a framework of new application scenarios
spanning a wide range from dedicated and user specific services,
“Try&Buy” mechanisms to general means for long-term customer
relationships. The tremendous recent efforts to develop and deploy
ubiquitous mobile communication possibilities are changing the
demands but also possibilities for establishing new business and
commerce relationships. Especially we motivate annotation
watermarks and aspects of M-Commerce to show important scenarios
for access control. Based on a description of the challenges of
the application domain and our latest work we discuss, which
methods can be used for establishing services in a fast convenient
and secure way for conditional access services based on digital
watermarking combined with cryptographic techniques. We introduce
an example scenario for digital audio and an overview of steps in
order to establish these concepts practically.