Struct ParticipantCollectingPolynomials

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

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

During this stage, participants exchange public polynomials and openings for the commitments exchanged on the previous stage. The exchange happens using a public bulletin board (e.g., a blockchain).

Implementations

impl<G: Group> ParticipantCollectingPolynomials<G>

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 public_info(&self) -> PublicInfo<'_, G>

Returns public participant information: participant’s public polynomial, proof of possession for the corresponding secret polynomial and the opening of the participant’s public key share commitment.

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

Returns the indices of parties whose public polynomials were not provided.

pub fn insert_public_polynomial( &mut self, participant_index: usize, info: PublicInfo<'_, G>, ) -> Result<(), Error>

Inserts public polynomial from participant with index participant_index their proof of possession of the public polynomial and opening of their previously provided commitment.

Errors

Returns an error if provided polynomial doesn’t correspond to the previous commitment or the proof of possession is not valid.

Panics

Panics if participant_index is out of bounds.

pub fn finish_polynomials_phase(self) -> ParticipantExchangingSecrets<G>

Proceeds to the next step of the DKG protocol, in which participants exchange secret shares.

Panics

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

Trait Implementations

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

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

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

Formats the value using the given formatter.

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.