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Optimal Traitor Tracing from Pairings

Authors:
Mark Zhandry , NTT Research
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Conference: EUROCRYPT 2025
Abstract: We use pairings over elliptic curves to give a collusion-resistant traitor tracing scheme where the sizes of public keys, secret keys, and ciphertexts are independent of the number of users. Prior constructions from pairings had size N^{1/3}. An additional consequence of our techniques is general result showing that attribute-based encryption for circuits generically implies optimal traitor tracing.
BibTeX
@inproceedings{eurocrypt-2025-34940,
  title={Optimal Traitor Tracing from Pairings},
  publisher={Springer-Verlag},
  author={Mark Zhandry},
  year=2025
}