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Paper: New Techniques for Traitor Tracing: Size N^{1/3} and More from Pairings

Authors:
Mark Zhandry , Princeton University and NTT Research
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DOI: https://doi.org/10.1007/978-3-030-56784-2_22 (login may be required)
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Presentation: Slides
Conference: CRYPTO 2020
Abstract: The best existing traitor tracing scheme from pairings achieves $O(\sqrt{N})$-sized parameters, which has stood since 2006. This intuitively seems to be consistent with the fact that pairings allow for degree-2 computations, yielding a quadratic compression. In this work, we show that this intuition is false by building a traitor tracing scheme from pairings with $O(\sqrt[3]{N})$-sized parameters. We obtain our scheme by developing a number of new traitor tracing techniques offering various trade-offs that were not possible before, giving the first significant parameter improvements in pairings-based traitor tracing in over a decade.
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BibTeX
@inproceedings{crypto-2020-30467,
  title={New Techniques for Traitor Tracing: Size N^{1/3} and More from Pairings},
  publisher={Springer-Verlag},
  doi={https://doi.org/10.1007/978-3-030-56784-2_22},
  author={Mark Zhandry},
  year=2020
}