The Flexible Round-Optimized Schnorr Threshold Protocol for Two-Round Schnorr Signatures
RFC 9591, “The Flexible Round-Optimized Schnorr Threshold Protocol for Two-Round Schnorr Signatures”, is an Informational document published in June 2024 by D. Connolly, C. Komlo, I. Goldberg, C. A. Wood. The canonical text is published by the RFC Editor.
Abstract
This document specifies the Flexible Round-Optimized Schnorr Threshold (FROST) signing protocol. FROST signatures can be issued after a threshold number of entities cooperate to compute a signature, allowing for improved distribution of trust and redundancy with respect to a secret key. FROST depends only on a prime-order group and cryptographic hash function. This document specifies a number of ciphersuites to instantiate FROST using different prime-order groups and hash functions. This document is a product of the Crypto Forum Research Group (CFRG) in the IRTF.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 9591 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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