Optimal symmetric Tardos traitor tracing schemes

Research output: Book/ReportReportAcademic

87 Downloads (Pure)


For the Tardos traitor tracing scheme, we show that by combining the symbol-symmetric accusation function of Skoric et al. with the improved analysis of Blayer and Tassa we get further improvements. Our construction gives codes that are up to 4 times shorter than Blayer and Tassa's, and up to 2 times shorter than the codes from Skoric et al. Asymptotically, we achieve the theoretical optimal codelength for Tardos' distribution function and the symmetric score function. For large coalitions, our codelengths are asymptotically about 4.93% of Tardos' original codelengths, which also improves upon results from Nuida et al.
Original languageEnglish
Number of pages17
Publication statusPublished - 2011

Publication series

NamearXiv.org [cs.CR]


Dive into the research topics of 'Optimal symmetric Tardos traitor tracing schemes'. Together they form a unique fingerprint.

Cite this