Partially Identifying Codes for Copyright Protection

  • Authors:
  • Sylvia B. Encheva;Gérard D. Cohen

  • Affiliations:
  • -;-

  • Venue:
  • AAECC-14 Proceedings of the 14th International Symposium on Applied Algebra, Algebraic Algorithms and Error-Correcting Codes
  • Year:
  • 2001

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Abstract

If 驴 is a q-ary code of length n and a, b, ..., e are codewords, then c is called a descendant of a, b, ..., e if ci 驴 {ai, bi, ..., ei} for i = 1, ..., n. Codes 驴 with the property that coalitions of a limited size have restrictions on their descendants are studied. Namely, we consider codes with the following partial identification property, referred to later as 2- secure frameproof codes (2-SFPC): any two non intersecting coalitions of size at most 2 have no common descendant.