Struct SignedMessage

pub struct SignedMessage<E: EngineBLS> {
    pub message: Message,
    pub publickey: PublicKey<E>,
    pub signature: Signature<E>,
}

Message with attached BLS signature

Fields

message: Message

publickey: PublicKey<E>

signature: Signature<E>

Implementations

impl<E: EngineBLS> SignedMessage<E>

pub fn vrf_hash<H: ExtendableOutput>(&self, h: &mut H)

Hash output from a BLS signature regarded as a VRF.

If you are not the signer then you must verify the VRF before calling this method.

If called with distinct contexts then outputs should be independent.

We incorporate both the input and output to provide the 2Hash-DH construction from Theorem 2 on page 32 in appendex C of “Ouroboros Praos: An adaptively-secure, semi-synchronous proof-of-stake blockchain” by Bernardo David, Peter Gazi, Aggelos Kiayias, and Alexander Russell.

pub fn make_bytes<Out: Default + AsMut<[u8]>>(&self, context: &[u8]) -> Out

Raw bytes output from a BLS signature regarded as a VRF.

If you are not the signer then you must verify the VRF before calling this method.

If called with distinct contexts then outputs should be independent.

pub fn make_chacharng(&self, context: &[u8]) -> ChaCha8Rng

VRF output converted into a ChaChaRng.

If you are not the signer then you must verify the VRF before calling this method.

If called with distinct contexts then outputs should be independent. Independent output streams are available via ChaChaRng::set_stream too.

We incorporate both the input and output to provide the 2Hash-DH construction from Theorem 2 on page 32 in appendex C of “Ouroboros Praos: An adaptively-secure, semi-synchronous proof-of-stake blockchain” by Bernardo David, Peter Gazi, Aggelos Kiayias, and Alexander Russell.

Trait Implementations

impl<E: Clone + EngineBLS> Clone for SignedMessage<E>

fn clone(&self) -> SignedMessage<E>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<E: Debug + EngineBLS> Debug for SignedMessage<E>

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

Formats the value using the given formatter.

impl<E: EngineBLS> PartialEq for SignedMessage<E>

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl<'a, E: EngineBLS> Signed for &'a SignedMessage<E>

type E = E

type M = Message

type PKG = PublicKey<E>

type PKnM = Once<(Message, PublicKey<E>)>

Iterator over, messages and public key reference pairs.

fn messages_and_publickeys(self) -> Self::PKnM

Returns an iterator over messages and public key reference for pairings, often only partially aggregated.

fn signature(&self) -> Signature<E>

Return the aggregated signature

fn verify(self) -> bool

Appropriate BLS signature verification for the Self type.

impl<E: EngineBLS> Eq for SignedMessage<E>