Struct dusk_schnorr::Signature

pub struct Signature { /* private fields */ }

An Schnorr signature, produced by signing a message with a SecretKey.

Fields

• u: A JubJubScalar
• R: A JubJubExtended point

Example

use dusk_bls12_381::BlsScalar;
use dusk_schnorr::{PublicKey, SecretKey, Signature};
use rand::rngs::StdRng;
use rand::SeedableRng;
use ff::Field;

let mut rng = StdRng::seed_from_u64(1234u64);

let sk = SecretKey::random(&mut rng);
let message = BlsScalar::random(&mut rng);
let pk = PublicKey::from(&sk);

// Sign the message
let signature = sk.sign(&mut rng, message);

// Verify the signature
assert!(pk.verify(&signature, message));

Implementations

impl Signature

pub fn u(&self) -> &JubJubScalar

Exposes the u scalar of the Schnorr signature.

pub fn R(&self) -> &JubJubExtended

Exposes the R point of the Schnorr signature.

pub fn append(&self, composer: &mut Composer) -> (Witness, WitnessPoint)

Appends the single key as a witness to the circuit composed by the Composer.

Feature

Only available with the “alloc” feature enabled.

Parameters

• composer: Mutable reference to the Plonk Composer.

Returns

Returns a tuple (Witness, WitnessPoint) containing converted u and R fields.

Trait Implementations

impl Clone for Signature

fn clone(&self) -> Signature

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Signature

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

Formats the value using the given formatter.

impl Default for Signature

fn default() -> Signature

Returns the “default value” for a type.

impl PartialEq for Signature

fn eq(&self, other: &Signature) -> 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 Serializable<64> for Signature

type Error = Error

The type returned in the event of a conversion error.

fn to_bytes(&self) -> [u8; 64]

Serialize Self into a [[u8; N]].

fn from_bytes(bytes: &[u8; 64]) -> Result<Self, Self::Error>

Deserialize a [&[u8; N]] into Self, it might be fail.

const SIZE: usize = N

The size of

impl Copy for Signature

impl StructuralPartialEq for Signature