Struct snowbridge_beacon_primitives::bls::AggregateSignature

pub struct AggregateSignature {
    pub point: ECP2,
}

Allows for the adding/combining of multiple BLS Signatures.

This may be verified against some AggregatePublicKey.

Fields

point: ECP2

Implementations

impl AggregateSignature

pub fn new() -> AggregateSignature

Instantiates a new AggregateSignature.

The underlying point will be set to infinity.

pub fn aggregate(signatures: &[&Signature]) -> AggregateSignature

Instantiate a new AggregateSignature from a vector of Signatures.

https://tools.ietf.org/html/draft-irtf-cfrg-bls-signature-02#section-2.8

pub fn from_signature(signature: &Signature) -> AggregateSignature

Instantiate a new AggregateSignature from a single Signature.

pub fn add(&mut self, signature: &Signature)

Add a Signature to the AggregateSignature.

pub fn add_aggregate(&mut self, aggregate_signature: &AggregateSignature)

Add a AggregateSignature to the AggregateSignature.

To maintain consensus AggregateSignatures should only be added if they relate to the same message

pub fn aggregate_verify( &self, msgs: &[&[u8]], public_keys: &[&PublicKey], ) -> bool

AggregateVerify

Verifies an AggregateSignature against a list of Messages and PublicKeys https://tools.ietf.org/html/draft-irtf-cfrg-bls-signature-02#section-3.3

pub fn fast_aggregate_verify( &self, msg: &[u8], public_keys: &[&PublicKey], ) -> bool

FastAggregateVerify

Verifies an AggregateSignature against a list of PublicKeys. PublicKeys must all be verified via Proof of Possession before running this function. https://tools.ietf.org/html/draft-irtf-cfrg-bls-signature-02#section-3.3.4

pub fn fast_aggregate_verify_pre_aggregated( &self, msg: &[u8], aggregate_public_key: &AggregatePublicKey, ) -> bool

FastAggregateVerify - pre-aggregated PublicKeys

Verifies an AggregateSignature against an AggregatePublicKey. PublicKeys must all be verified before being aggregated. Differs to IEFT FastAggregateVerify in that public keys are already aggregated. https://tools.ietf.org/html/draft-irtf-cfrg-bls-signature-02#section-3.3.4

pub fn verify_multiple_aggregate_signatures<'a, R, I>( rng: &mut R, signature_sets: I, ) -> bool

where R: Rng + ?Sized, I: Iterator<Item = (&'a AggregateSignature, &'a AggregatePublicKey, &'a [u8])>,

Verify Multiple AggregateSignatures

Input (AggregateSignature, PublicKey[m], Message(Vec))[n] Checks that each AggregateSignature is valid with a reduced number of pairings. https://ethresear.ch/t/fast-verification-of-multiple-bls-signatures/5407 Note: Assumes Proof of Possession of public keys.

pub fn from_bytes(bytes: &[u8]) -> Result<AggregateSignature, AmclError>

Instatiate an AggregateSignature from some bytes.

pub fn as_bytes(&self) -> [u8; 96]

Export (serialize) the AggregateSignature to bytes.

Trait Implementations

impl Clone for AggregateSignature

fn clone(&self) -> AggregateSignature

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AggregateSignature

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

Formats the value using the given formatter.

impl Default for AggregateSignature

fn default() -> AggregateSignature

Returns the “default value” for a type.

impl PartialEq for AggregateSignature

fn eq(&self, other: &AggregateSignature) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for AggregateSignature

impl StructuralPartialEq for AggregateSignature