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.

Highlights

  • The annotation watermark acts as a ticket for the update service with the embedded information ensuring a correct service regarding product and version number

  • We suggest the use of annotation watermarks to provide conditional access for additional services or services for

  • We have introduced and discussed conditional access mechanisms for annotation watermarks

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Summary

MOTIVATION

Multimedia systems are increasingly used and security has become one of the most significant and challenging problems for spreading new information technology. Besides securing authenticity and integrity of digital data, watermarks are used to annotate the data and provide additional information to the users. Further developments of personal digital assistants (PDAs) together with appropriated security mechanisms are going to make them more suitable for mobile access to different networks Both trends will lead to a high success for the M-Commerce sector. There is need for conditional access mechanisms Those could combine annotation watermarks, strong cryptographic, and online-communication mechanisms as provided by innovative equipment like WAP cell phones or networked PDAs. In our paper, we extend our discussion introduced in [26] to combine annotation watermark with additional security features to provide approaches for access control in M-Commerce applications. We give conclusions and point out important future work

M-COMMERCE BASICS
ACCESS CONTROL SCENARIOS
Buying books
Errata
Long term customer relationships
Advertisement bonus program
SOLUTIONS USING DIGITAL WATERMARKING
Discount approach
Secret sharing approach
Partial access approach
Key watermark approach
Watermarking parameter
Possible attacks
EXAMPLE SCENARIO
Findings
CONCLUSION AND FUTURE WORK
Full Text
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