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Proceedings Article

Tuple decoders for traitor tracing schemes

[+] Author Affiliations
Jan-Jaap Oosterwijk, Thijs Laarhoven

Technische Univ. Eindhoven (Netherlands)

Jeroen Doumen

Irdeto B.V. (Netherlands)

Proc. SPIE 9028, Media Watermarking, Security, and Forensics 2014, 90280C (February 19, 2014); doi:10.1117/12.2037659
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From Conference Volume 9028

  • Media Watermarking, Security, and Forensics 2014
  • Adnan M. Alattar; Nasir D. Memon; Chad D. Heitzenrater
  • San Francisco, California, USA | February 02, 2014

abstract

In the field of collusion-resistant traitor tracing, Oosterwijk et al. recently determined the optimal suspicion function for simple decoders. Earlier, Moulin also considered another type of decoder: the generic joint decoder that compares all possible coalitions, and showed that usually the generic joint decoder outperforms the simple decoder. Both Amiri and Tardos, and Meerwald and Furon described constructions that assign suspicion levels to c-tuples, where c is the number of colluders. We investigate a novel idea: the tuple decoder, assigning a suspicion level to tuples of a fixed size. In contrast to earlier work, we use this in a novel accusation algorithm to decide for each distinct user whether or not to accuse him. We expect such a scheme to outperform simple decoders while not being as computationally intensive as the generic joint decoder. In this paper we generalize the optimal suspicion functions to tuples, and describe a family of accusation algorithms in this setting that accuses individual users using this tuple-based information. © (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Topics

Algorithms
Citation

Jan-Jaap Oosterwijk ; Jeroen Doumen and Thijs Laarhoven
" Tuple decoders for traitor tracing schemes ", Proc. SPIE 9028, Media Watermarking, Security, and Forensics 2014, 90280C (February 19, 2014); doi:10.1117/12.2037659; http://dx.doi.org/10.1117/12.2037659


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