Struct ParticipantExchangingSecrets

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

Participant state during the third and final stage of the committed Pedersen’s distributed key generation.

During this stage, participants exchange secret shares corresponding to the polynomials exchanged on the previous stage. The exchange happens using secure peer-to-peer channels established between pairs of participants.

Implementations

impl<G: Group> ParticipantExchangingSecrets<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 secret_share_for_participant( &self, participant_index: usize, ) -> SecretKey<G>

Returns the secret share for a participant with the specified participant_index.

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

Returns indices of parties whose secret shares were not provided.

pub fn insert_secret_share( &mut self, participant_index: usize, secret_share: SecretKey<G>, ) -> Result<(), Error>

Inserts a secret share from participant with index participant_index and checks that the share is valid.

Errors

Returns an error if provided secret share doesn’t correspond to the participant’s public polynomial collected on the previous step of the DKG protocol.

Panics

Panics if participant_index is out of bounds.

pub fn complete(self) -> Result<ActiveParticipant<G>, Error>

Completes the distributed key generation protocol returning an ActiveParticipant.

Errors

Returns error if secret shares from some parties were not provided, or if the PublicKeySet cannot be created from participants’ keys.

Panics

Panics if shares from any participants are missing. If this is not known statically, check with Self::missing_shares() before calling this method.

Trait Implementations

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

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

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

Formats the value using the given formatter.

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.