Fireblocks-3MI Plan for NIST Threshold ECDSA

"Preview Talk" (by Team Fireblocks-3MI) @ MPTS 2026, in reply to the NIST Threshold Call

Abstract. In this talk, I will speak on behalf of the Fireblocks–3MI team, which intends to submit two distributed ECDSA protocols as submission packages to NIST’s threshold call: one based on Canetti et al. (CCS 2021) for distributed ECDSA, and one based on recent work by Adjedj et al. (ePrint 2024/1950) for two-party ECDSA. The goal of this talk is to publicize our plans, solicit input, and explore collaborations with interested parties. I will also argue that multi-party ECDSA has matured to the point where the community should advance a single, unified submission, one that would encompass both Paillier-based protocols (e.g., CGGMP21) and alternative approaches.

Joint work: Michael Adjedj, Tomer Ashur, Amit Singh Bhati, Geoffroy Couteau, Cyprien Delpech de Saint Guilhem, Michael Gutkin, Nikos Makriyannis.

[Slides] Suggested readings:

• Preview Writeup: Distributed ECDSA Signatures: Fireblocks’ CGGMP protocol
• UC Non-Interactive, Proactive, Threshold ECDSA with Identifiable Aborts (ia.cr/2021/060)
• Preview Writeup: Two-Party ECDSA Signatures: Fireblocks’s BAM Protocol
• Two-Round 2PC ECDSA at the Cost of 1 OLE (ia.cr/2024/1950)