Seminar, InfoSec Seminar: Introducing FROST: Flexible Round-Optimized Schnorr Threshold Signatures

Speaker: Chelsea Komlo

Date/Time: 10-Dec-2020, 16:00 UTC

Venue: Virtual Seminar

Details

Abstract:

FROST is an improved threshold Schnorr signature scheme that
allows for an optimization from a two-round signing protocol into a
single-round protocol with preprocessing. FROST improves upon prior
constructions as it is secure against forgery attacks which are
demonstrated to be viable against similar schemes in the literature.

In this talk, we will introduce FROST and the motivations for its
design. We will review the security model under which FROST is secure,
and how this security model compares to practical deployments of
threshold signatures. We will discuss how FROST is compatible with
existing protocols such as those that require EdDSA compatibility, as
well as next steps for FROST to be deployed and standardized.

Bio:

Chelsea Komlo has nearly a decade of engineering experience and is
a lead author on cryptographic designs ranging from multi-party
signature schemes to post-quantum primitives with applications to secure
messaging. She currently is completing her Ph.D at the University of
Waterloo in the Cryptography, Security, and Privacy Lab, and is a
Principal Technical Advisor and Researcher for the Zcash Foundation.
Chelsea also serves on the board of directors for the Tor Project and on
the Tor Research Safety Bard.

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