A family of collusion 2-secure codes

  • Authors:
  • Josep Cotrina-Navau;Marcel Fernandez;Miguel Soriano

  • Affiliations:
  • Department of Telematics Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain;Department of Telematics Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain;Department of Telematics Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain

  • Venue:
  • IH'05 Proceedings of the 7th international conference on Information Hiding
  • Year:
  • 2005

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Abstract

We present systematic strategy for collusions attacking a fingerprinting scheme. As a particular case, this strategy shows that linear codes are not good fingerprinting codes. Based on equidistant codes, we construct a family of fingerprinting codes in which the identification of guilty users can be efficiently done using minimum distance decoding.