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.