Struct ParticipantCollectingCommitments

pub struct ParticipantCollectingCommitments<G: Group> { /* private fields */ }

Participant state during the first stage of the committed Pedersen’s distributed key generation.

During this stage, participants exchange commitments to their public keys via a public bulletin board (e.g., a blockchain).

Implementations

impl<G: Group> ParticipantCollectingCommitments<G>

pub fn new<R: CryptoRng + RngCore>( params: Params, index: usize, rng: &mut R, ) -> Self

Instantiates a distributed key generation participant.

Panics

Panics if index is greater or equal to the number of shares.

pub fn params(&self) -> &Params

Returns params of this threshold ElGamal encryption scheme.

pub fn index(&self) -> usize

Returns 0-based index of this participant.

pub fn commitment(&self) -> [u8; 32]

Returns the commitment of participant’s share of the joint public key.

Panics

Panics if the commitment is missing which can only happen if this struct got corrupted (e.g., after deserialization).

pub fn insert_commitment( &mut self, participant_index: usize, commitment: [u8; 32], )

Inserts a commitment from the participant with index participant_index.

Panics

Panics if commitment for given participant was already provided or participant_index is out of bounds.

pub fn missing_commitments(&self) -> impl Iterator<Item = usize> + '_

Returns indices of parties whose commitments were not provided.

pub fn finish_commitment_phase(self) -> ParticipantCollectingPolynomials<G>

Proceeds to the next step of the DKG protocol, in which participants exchange public polynomials.

Panics

Panics if any commitments are missing. If this is not known statically, check with Self::missing_commitments() before calling this method.

Trait Implementations

impl<G: Clone + Group> Clone for ParticipantCollectingCommitments<G>

fn clone(&self) -> ParticipantCollectingCommitments<G>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<G: Debug + Group> Debug for ParticipantCollectingCommitments<G>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de, G: Group> Deserialize<'de> for ParticipantCollectingCommitments<G>

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<G: Group> Serialize for ParticipantCollectingCommitments<G>

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.