Paper 2012/249
Binary and q-ary Tardos codes, revisited
Boris Skoric and Jan-Jaap Oosterwijk
Abstract
The Tardos code is a much studied collusion-resistant fingerprinting code, with the special property that it has asymptotically optimal length $m\propto c_0^2$, where $c_0$ is the number of colluders. In this paper we give alternative security proofs for the Tardos code, working with the assumption that the strongest coalition strategy is position-independent. We employ the Bernstein inequality and Bennett inequality instead of the typically used Markov inequality. This proof technique requires fewer steps and slightly improves the tightness of the bound on the false negative error probability. We present new results on code length optimization, for both small and asymptotically large coalition sizes.
Note: Correction of Lemma 6.
Metadata
- Available format(s)
-
PDF
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- collusionwatermarkingfingerprinting
- Contact author(s)
- b skoric @ tue nl
- History
- 2013-06-27: last of 3 revisions
- 2012-05-03: received
- See all versions
- Short URL
- https://ia.cr/2012/249
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2012/249,
author = {Boris Skoric and Jan-Jaap Oosterwijk},
title = {Binary and q-ary Tardos codes, revisited},
howpublished = {Cryptology {ePrint} Archive, Paper 2012/249},
year = {2012},
url = {https://eprint.iacr.org/2012/249}
}
