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Proceedings Paper

Ranking search for probabilistic fingerprinting codes
Author(s): Marcel Schäfer; Waldemar Berchtold; Martin Steinebach
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Paper Abstract

Digital transaction watermarking today is a widely accepted mechanism to discourage illegal distribution of multimedia. The transaction watermark is a user-specific message that is embedded in all copies of one content and thus makes it individual. Therewith it allows to trace back copyright infringements. One major threat on transaction watermarking are collusion attacks. Here, multiple individualized copies of the work are compared and/or combined to attack the integrity or availability of the embedded watermark message. One solution to counter such attacks are mathematical codes called collusion secure fingerprinting codes. Problems arise when applying such codes to multimedia files with small payload, e.g. short audio tracks or images. Therefore the code length has to be shortened which increases the error rates and/or the effort of the tracing algorithm. In this work we propose an approach whether to use as an addition to probabilistic fingerprinting codes for a reduction of the effort and increment of security, as well as a new separate method providing shorter codes at a very fast and high accurate tracing algorithm.

Paper Details

Date Published: 9 February 2012
PDF: 10 pages
Proc. SPIE 8303, Media Watermarking, Security, and Forensics 2012, 830306 (9 February 2012); doi: 10.1117/12.908352
Show Author Affiliations
Marcel Schäfer, Fraunhofer Institute for Secure Information Technology (Germany)
Waldemar Berchtold, Fraunhofer Institute for Secure Information Technology (Germany)
Martin Steinebach, Fraunhofer Institute for Secure Information Technology (Germany)

Published in SPIE Proceedings Vol. 8303:
Media Watermarking, Security, and Forensics 2012
Nasir D. Memon; Adnan M. Alattar; Edward J. Delp III, Editor(s)

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