Crate dkg

Distributed Key Generation

A collection of implementations of various distributed key generation protocols.

All included protocols resolve into the provided Threshold types, intended to enable their modularity. Additional utilities around these types, such as promotion from one generator to another, are also provided.

Currently, the only included protocol is the two-round protocol from the FROST paper.

This library was audited by Cypher Stack in March 2023, culminating in commit 669d2dbffc1dafb82a09d9419ea182667115df06. Any subsequent changes have not undergone auditing.

Re-exports

pub use super::*;

Modules

encryptionstd

Encryption types and utilities used to secure DKG messages.

froststd

The distributed key generation protocol described in the FROST paper.

musig

MuSig-style key aggregation.

promotestd

Promote keys between ciphersuites.

teststests

Tests for application-provided curves and algorithms.

Structs

Participant

The ID of a participant, defined as a non-zero u16.

ThresholdCorestd

Keys and verification shares generated by a DKG. Called core as they’re expected to be wrapped into an Arc before usage in various operations.

ThresholdKeysstd

Threshold keys usable for signing.

ThresholdParamsstd

Parameters for a multisig.

ThresholdViewstd

View of keys, interpolated and offset for usage.

Enums

DkgError

Various errors possible during key generation.

Functions

lagrangestd

Calculate the lagrange coefficient for a signing set.