[Resource Topic] 2019/279: A Note on Key Agreement and Non-Interactive Commitments

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A Note on Key Agreement and Non-Interactive Commitments

Authors: Alex Lombardi, Luke Schaeffer


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.

ePrint: https://eprint.iacr.org/2019/279

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