Adaptive Multiparty NIKE

Venkata Koppula; Brent Waters; Mark Zhandry

Paper 2022/1324 Original: eprint.iacr.org/2022/1324 ↗

Adaptive Multiparty NIKE

Venkata Koppula

Brent Waters

Mark Zhandry

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.

Metadata

Available format(s): PDF
Category: Foundations
Publication info: Preprint.
History: 2022-10-05: last updated; 2022-10-05: published
Short URL: https://ia.cr/2022/1324
License: https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2022/1324,
      author = {Venkata Koppula and Brent Waters and Mark Zhandry},
      title = {Adaptive Multiparty NIKE},
      howpublished = {Cryptology {ePrint} Archive, Paper 2022/1324},
      year = {2022},
      url = {https://eprint.iacr.org/2022/1324}
}