88 lines
3.4 KiB
Rust
88 lines
3.4 KiB
Rust
#![doc = include_str!("../dkg.md")]
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use super::*;
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/// DKG Round 1 structures.
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pub mod round1 {
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use super::*;
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/// The secret package that must be kept in memory by the participant
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/// between the first and second parts of the DKG protocol (round 1).
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///
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/// # Security
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///
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/// This package MUST NOT be sent to other participants!
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pub type SecretPackage = frost::keys::dkg::round1::SecretPackage<J>;
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/// The package that must be broadcast by each participant to all other participants
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/// between the first and second parts of the DKG protocol (round 1).
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pub type Package = frost::keys::dkg::round1::Package<J>;
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}
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/// DKG Round 2 structures.
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pub mod round2 {
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use super::*;
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/// The secret package that must be kept in memory by the participant
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/// between the second and third parts of the DKG protocol (round 2).
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///
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/// # Security
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///
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/// This package MUST NOT be sent to other participants!
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pub type SecretPackage = frost::keys::dkg::round2::SecretPackage<J>;
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/// A package that must be sent by each participant to some other participants
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/// in Round 2 of the DKG protocol. Note that there is one specific package
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/// for each specific recipient, in contrast to Round 1.
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///
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/// # Security
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///
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/// The package must be sent on an *confidential* and *authenticated* channel.
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pub type Package = frost::keys::dkg::round2::Package<J>;
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}
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/// Performs the first part of the distributed key generation protocol
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/// for the given participant.
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///
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/// It returns the [`round1::SecretPackage`] that must be kept in memory
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/// by the participant for the other steps, and the [`round1::Package`] that
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/// must be sent to other participants.
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pub fn part1<R: RngCore + CryptoRng>(
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identifier: Identifier,
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max_signers: u16,
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min_signers: u16,
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mut rng: R,
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) -> Result<(round1::SecretPackage, round1::Package), Error> {
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frost::keys::dkg::part1(identifier, max_signers, min_signers, &mut rng)
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}
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/// Performs the second part of the distributed key generation protocol
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/// for the participant holding the given [`round1::SecretPackage`],
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/// given the received [`round1::Package`]s received from the other participants.
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///
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/// It returns the [`round2::SecretPackage`] that must be kept in memory
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/// by the participant for the final step, and the [`round2::Package`]s that
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/// must be sent to other participants.
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pub fn part2(
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secret_package: round1::SecretPackage,
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round1_packages: &[round1::Package],
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) -> Result<(round2::SecretPackage, Vec<round2::Package>), Error> {
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frost::keys::dkg::part2(secret_package, round1_packages)
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}
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/// Performs the third and final part of the distributed key generation protocol
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/// for the participant holding the given [`round2::SecretPackage`],
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/// given the received [`round1::Package`]s and [`round2::Package`]s received from
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/// the other participants.
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///
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/// It returns the [`KeyPackage`] that has the long-lived key share for the
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/// participant, and the [`PublicKeyPackage`]s that has public information
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/// about all participants; both of which are required to compute FROST
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/// signatures.
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pub fn part3(
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round2_secret_package: &round2::SecretPackage,
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round1_packages: &[round1::Package],
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round2_packages: &[round2::Package],
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) -> Result<(KeyPackage, PublicKeyPackage), Error> {
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frost::keys::dkg::part3(round2_secret_package, round1_packages, round2_packages)
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}
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