A Note on Key Agreement and Non-Interactive Commitments

Alex Lombardi; Luke Schaeffer

Paper 2019/279

A Note on Key Agreement and Non-Interactive Commitments

Alex Lombardi and Luke Schaeffer

Abstract

We observe that any key agreement protocol satisfying perfect completeness, regardless of its round complexity, can be used to construct a non-interactive commitment scheme. This observation simplifies the cryptographic assumptions required for some protocols that utilize non-interactive commitments and removes the need for ad-hoc constructions of non-interactive commitments from specific assumptions such as Learning with Errors.

Metadata

Available format(s): PDF
Category: Foundations
Publication info: Preprint. MINOR revision.
Keywords: Non-interactive commitments key agreement
Contact author(s): alexjl @ mit edu
History: 2019-03-12: received
Short URL: https://ia.cr/2019/279
License: CC BY

BibTeX

@misc{cryptoeprint:2019/279,
      author = {Alex Lombardi and Luke Schaeffer},
      title = {A Note on Key Agreement and Non-Interactive Commitments},
      howpublished = {Cryptology {ePrint} Archive, Paper 2019/279},
      year = {2019},
      url = {https://eprint.iacr.org/2019/279}
}