Introduction to MPTS 2026 and the NIST Threshold Call

Abstract. MPTS 2026, the NIST Workshop on Multi-Party Threshold Scheme 2026, brings together multiple perspectives of Threshold Cryptography. This year's event counts with 40+ talks, given over the span of four days (January 26–29). The workshop features diverse topics, such as threshold signatures, threshold PKE/KEM, threshold ciphers/hashing, fully-homomorphic encryption (FHE), and zero-knowledge proofs (ZKP). A main reference point for the workshop is the recently published NIST Threshold Call (IR 8214C), which establishes a process for collecting reference materials. The workshop already includes 20+ "Preview Talks", which will present plans of upcoming submissions to the NIST Threshold Call. Updates to the workshop program will be published in the workshop webpage: https://csrc.nist.gov/events/2026/mpts2026

Presented by Luís Brandão.

[Slides] Suggested readings:

• NIST First Call for Multi-Party Threhsold Schemes (NIST IR 8214C), joint work with René Peralta
• Notes on Threshold EdDSA/Schnorr Signatures (NIST IR 8214B ipd), joint work with Michael Davidson