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Move secret_to_public to a ECDSASecretKey method

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This commit is contained in:
wborgeaud 2022-03-18 08:04:40 +01:00
parent c472afe12e
commit ddd5192489
2 changed files with 12 additions and 9 deletions
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21
ecdsa/src/curve/ecdsa.rs
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@ -1,8 +1,8 @@
use plonky2_field::field_types::Field;
use serde::{Deserialize, Serialize};
use crate::curve::curve_msm::msm_parallel;
use crate::curve::curve_types::{base_to_scalar, AffinePoint, Curve, CurveScalar};
use crate::field::field_types::Field;
#[derive(Copy, Clone, Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
pub struct ECDSASignature<C: Curve> {
@ -13,13 +13,15 @@ pub struct ECDSASignature<C: Curve> {
#[derive(Copy, Clone, Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
pub struct ECDSASecretKey<C: Curve>(pub C::ScalarField);
impl<C: Curve> ECDSASecretKey<C> {
pub fn to_public(&self) -> ECDSAPublicKey<C> {
ECDSAPublicKey((CurveScalar(self.0) * C::GENERATOR_PROJECTIVE).to_affine())
}
}
#[derive(Copy, Clone, Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
pub struct ECDSAPublicKey<C: Curve>(pub AffinePoint<C>);
pub fn secret_to_public<C: Curve>(sk: ECDSASecretKey<C>) -> ECDSAPublicKey<C> {
ECDSAPublicKey((CurveScalar(sk.0) * C::GENERATOR_PROJECTIVE).to_affine())
}
pub fn sign_message<C: Curve>(msg: C::ScalarField, sk: ECDSASecretKey<C>) -> ECDSASignature<C> {
let (k, rr) = {
let mut k = C::ScalarField::rand();
@ -61,10 +63,11 @@ pub fn verify_message<C: Curve>(
#[cfg(test)]
mod tests {
use crate::curve::ecdsa::{secret_to_public, sign_message, verify_message, ECDSASecretKey};
use plonky2_field::field_types::Field;
use plonky2_field::secp256k1_scalar::Secp256K1Scalar;
use crate::curve::ecdsa::{sign_message, verify_message, ECDSASecretKey};
use crate::curve::secp256k1::Secp256K1;
use crate::field::field_types::Field;
use crate::field::secp256k1_scalar::Secp256K1Scalar;
#[test]
fn test_ecdsa_native() {
@ -72,7 +75,7 @@ mod tests {
let msg = Secp256K1Scalar::rand();
let sk = ECDSASecretKey::<C>(Secp256K1Scalar::rand());
let pk = secret_to_public(sk);
let pk = sk.to_public();
let sig = sign_message(msg, sk);
let result = verify_message(msg, sig, pk);

0
plonky2/src/gadgets/ecdsa.rs
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