Struct Clerk

pub struct Clerk<D: Clone + Digest> { /* private fields */ }

Clerk can verify and aggregate SingleSignatures and verify AggregateSignatures. Clerks can only be generated with the registration closed. This avoids that a Merkle Tree is computed before all parties have registered.

Implementations

impl<D: Digest + Clone + FixedOutput> Clerk<D>

pub fn from_registration( params: &Parameters, closed_reg: &ClosedKeyRegistration<D>, ) -> Self

Create a new Clerk from a closed registration instance.

pub fn from_signer(signer: &Signer<D>) -> Self

Create a Clerk from a signer.

pub fn aggregate( &self, sigs: &[SingleSignature], msg: &[u8], ) -> Result<AggregateSignature<D>, AggregationError>

Aggregate a set of signatures for their corresponding indices.

This function first deduplicates the repeated signatures, and if there are enough signatures, it collects the merkle tree indexes of unique signatures. The list of merkle tree indexes is used to create a batch proof, to prove that all signatures are from eligible signers.

It returns an instance of AggregateSignature.

pub fn compute_avk(&self) -> AggregateVerificationKey<D>

Compute the StmAggrVerificationKey related to the used registration.

pub fn get_reg_party( &self, party_index: &Index, ) -> Option<(VerificationKey, Stake)>

Get the (VK, stake) of a party given its index.

Trait Implementations

impl<D: Clone + Clone + Digest> Clone for Clerk<D>

fn clone(&self) -> Clerk<D>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<D: Debug + Clone + Digest> Debug for Clerk<D>

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

Formats the value using the given formatter.