International Association for Cryptologic Research

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Adaptive Multiparty NIKE

Authors:
Venkata Koppula , IIT Delhi
Brent Waters , NTT Research and UT Austin
Mark Zhandry , NTT Research and Princeton University
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Presentation: Slides
Conference: TCC 2022
Abstract: We construct adaptively secure multiparty non-interactive key exchange (NIKE) from polynomially-hard indistinguishability obfuscation and other standard assumptions. This improves on all prior such protocols, which required sub-exponential hardness. Along the way, we establish several compilers which simplify the task of constructing new multiparty NIKE protocols, and also establish a close connection with a particular type of constrained PRF.
BibTeX
@inproceedings{tcc-2022-32482,
  title={Adaptive Multiparty NIKE},
  publisher={Springer-Verlag},
  author={Venkata Koppula and Brent Waters and Mark Zhandry},
  year=2022
}