mirror of
https://github.com/arnaucube/ark-curves-cherry-picked.git
synced 2026-01-08 15:01:29 +01:00
GLV implementation for BLS12_377, BLS12_381 and BN254 (#158)
This commit is contained in:
@@ -11,6 +11,7 @@
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### Improvements
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- [\#156](https://github.com/arkworks-rs/curves/pull/156) The hard part of the final exponentiation for bw6-761 relocated from arkworks/algebra.
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- [\#158](https://github.com/arkworks-rs/curves/pull/158) Enabled GLV as the default scalar multiplication for BLS12-377, BLS12-381 and BN254.
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### Bugfixes
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@@ -3,14 +3,15 @@ use ark_ec::{
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bls12::Bls12Config,
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hashing::curve_maps::wb::{IsogenyMap, WBConfig},
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models::{
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short_weierstrass::{Affine as SWAffine, SWCurveConfig},
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short_weierstrass::{Affine as SWAffine, Projective as SWProjective, SWCurveConfig},
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twisted_edwards::{
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Affine as TEAffine, MontCurveConfig, Projective as TEProjective, TECurveConfig,
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},
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},
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scalar_mul::glv::GLVConfig,
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CurveConfig,
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};
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use ark_ff::{AdditiveGroup, Field, MontFp, PrimeField, Zero};
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use ark_ff::{AdditiveGroup, BigInt, Field, MontFp, PrimeField, Zero};
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use ark_std::{ops::Neg, One};
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use super::g1_swu_iso::{SwuIsoConfig, ISOGENY_MAP_TO_G1};
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@@ -49,6 +50,12 @@ impl SWCurveConfig for Config {
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Self::BaseField::zero()
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}
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#[inline]
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fn mul_projective(p: &G1Projective, scalar: &[u64]) -> G1Projective {
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let s = Self::ScalarField::from_sign_and_limbs(true, scalar);
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GLVConfig::glv_mul_projective(*p, s)
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}
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#[inline]
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fn clear_cofactor(p: &G1SWAffine) -> G1SWAffine {
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// Using the effective cofactor.
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@@ -59,6 +66,34 @@ impl SWCurveConfig for Config {
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}
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}
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impl GLVConfig for Config {
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const ENDO_COEFFS: &'static[Self::BaseField] = &[
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MontFp!("258664426012969093929703085429980814127835149614277183275038967946009968870203535512256352201271898244626862047231")
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];
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const LAMBDA: Self::ScalarField =
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MontFp!("8444461749428370424248824938781546531284005582649182570233710176290576793600");
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const SCALAR_DECOMP_COEFFS: [(bool, <Self::ScalarField as PrimeField>::BigInt); 4] = [
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(true, BigInt!("91893752504881257701523279626832445441")),
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(true, BigInt!("1")),
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(false, BigInt!("1")),
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(true, BigInt!("91893752504881257701523279626832445440")),
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];
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fn endomorphism(p: &SWProjective<Self>) -> SWProjective<Self> {
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let mut res = (*p).clone();
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res.x *= Self::ENDO_COEFFS[0];
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res
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}
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fn endomorphism_affine(p: &SWAffine<Self>) -> SWAffine<Self> {
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let mut res = (*p).clone();
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res.x *= Self::ENDO_COEFFS[0];
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res
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}
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}
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fn x_minus_one() -> Fr {
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const X: Fr = Fr::from_sign_and_limbs(!crate::Config::X_IS_NEGATIVE, crate::Config::X);
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X - Fr::one()
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@@ -2,12 +2,12 @@ use ark_ec::{
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bls12,
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bls12::Bls12Config,
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hashing::curve_maps::wb::{IsogenyMap, WBConfig},
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models::CurveConfig,
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scalar_mul::glv::GLVConfig,
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short_weierstrass::{Affine, Projective, SWCurveConfig},
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AffineRepr, CurveGroup, PrimeGroup,
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AffineRepr, CurveConfig, CurveGroup, PrimeGroup,
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};
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use ark_ff::{AdditiveGroup, Field, MontFp, Zero};
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use ark_ff::{AdditiveGroup, BigInt, Field, MontFp, PrimeField, Zero};
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use ark_std::ops::Neg;
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use crate::*;
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@@ -98,6 +98,36 @@ impl SWCurveConfig for Config {
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}
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}
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impl GLVConfig for Config {
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const ENDO_COEFFS: &'static[Self::BaseField] = &[
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Fq2::new(
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MontFp!("258664426012969093929703085429980814127835149614277183275038967946009968870203535512256352201271898244626862047231"),
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Fq::ZERO
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)
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];
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const LAMBDA: Self::ScalarField = MontFp!("91893752504881257701523279626832445440");
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const SCALAR_DECOMP_COEFFS: [(bool, <Self::ScalarField as PrimeField>::BigInt); 4] = [
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(false, BigInt!("91893752504881257701523279626832445440")),
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(true, BigInt!("1")),
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(false, BigInt!("1")),
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(false, BigInt!("91893752504881257701523279626832445441")),
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];
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fn endomorphism(p: &Projective<Self>) -> Projective<Self> {
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let mut res = (*p).clone();
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res.x *= Self::ENDO_COEFFS[0];
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res
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}
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fn endomorphism_affine(p: &Affine<Self>) -> Affine<Self> {
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let mut res = (*p).clone();
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res.x *= Self::ENDO_COEFFS[0];
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res
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}
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}
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pub const G2_GENERATOR_X: Fq2 = Fq2::new(G2_GENERATOR_X_C0, G2_GENERATOR_X_C1);
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pub const G2_GENERATOR_Y: Fq2 = Fq2::new(G2_GENERATOR_Y_C0, G2_GENERATOR_Y_C1);
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@@ -5,6 +5,8 @@ test_group!(g1; G1Projective; sw);
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test_group!(g2; G2Projective; sw);
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test_group!(pairing_output; ark_ec::pairing::PairingOutput<Bls12_377>; msm);
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test_pairing!(pairing; crate::Bls12_377);
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test_group!(g1_glv; G1Projective; glv);
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test_group!(g2_glv; G2Projective; glv);
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test_h2c!(g1_h2c; "./src/curves/tests"; "BLS12377G1"; crate::g1::Config; crate::Fq; crate::Fq; 1);
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test_h2c!(g2_hc2; "./src/curves/tests"; "BLS12377G2"; crate::g2::Config; crate::Fq2; crate::Fq; 2);
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@@ -3,10 +3,11 @@ use ark_ec::{
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bls12::Bls12Config,
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hashing::curve_maps::wb::{IsogenyMap, WBConfig},
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models::CurveConfig,
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scalar_mul::glv::GLVConfig,
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short_weierstrass::{Affine, SWCurveConfig},
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AffineRepr, PrimeGroup,
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};
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use ark_ff::{AdditiveGroup, MontFp, PrimeField, Zero};
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use ark_ff::{AdditiveGroup, BigInt, MontFp, PrimeField, Zero};
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use ark_serialize::{Compress, SerializationError};
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use ark_std::{ops::Neg, One};
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@@ -52,6 +53,12 @@ impl SWCurveConfig for Config {
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Self::BaseField::zero()
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}
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#[inline]
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fn mul_projective(p: &G1Projective, scalar: &[u64]) -> G1Projective {
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let s = Self::ScalarField::from_sign_and_limbs(true, scalar);
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GLVConfig::glv_mul_projective(*p, s)
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}
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#[inline]
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fn is_in_correct_subgroup_assuming_on_curve(p: &G1Affine) -> bool {
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// Algorithm from Section 6 of https://eprint.iacr.org/2021/1130.
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@@ -142,6 +149,34 @@ impl SWCurveConfig for Config {
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}
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}
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impl GLVConfig for Config {
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const ENDO_COEFFS: &'static[Self::BaseField] = &[
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MontFp!("793479390729215512621379701633421447060886740281060493010456487427281649075476305620758731620350")
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];
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const LAMBDA: Self::ScalarField =
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MontFp!("52435875175126190479447740508185965837461563690374988244538805122978187051009");
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const SCALAR_DECOMP_COEFFS: [(bool, <Self::ScalarField as PrimeField>::BigInt); 4] = [
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(true, BigInt!("228988810152649578064853576960394133504")),
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(true, BigInt!("1")),
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(false, BigInt!("1")),
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(true, BigInt!("228988810152649578064853576960394133503")),
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];
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fn endomorphism(p: &G1Projective) -> G1Projective {
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let mut res = (*p).clone();
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res.x *= Self::ENDO_COEFFS[0];
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res
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}
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fn endomorphism_affine(p: &Affine<Self>) -> Affine<Self> {
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let mut res = (*p).clone();
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res.x *= Self::ENDO_COEFFS[0];
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res
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}
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}
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fn one_minus_x() -> Fr {
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const X: Fr = Fr::from_sign_and_limbs(!crate::Config::X_IS_NEGATIVE, crate::Config::X);
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Fr::one() - X
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@@ -5,10 +5,11 @@ use ark_ec::{
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bls12::Bls12Config,
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hashing::curve_maps::wb::{IsogenyMap, WBConfig},
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models::CurveConfig,
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scalar_mul::glv::GLVConfig,
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short_weierstrass::{Affine, Projective, SWCurveConfig},
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AffineRepr, CurveGroup, PrimeGroup,
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};
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use ark_ff::{AdditiveGroup, Field, MontFp, Zero};
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use ark_ff::{AdditiveGroup, BigInt, Field, MontFp, PrimeField, Zero};
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use ark_serialize::{Compress, SerializationError};
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use super::{
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@@ -185,6 +186,36 @@ impl SWCurveConfig for Config {
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}
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}
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impl GLVConfig for Config {
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const ENDO_COEFFS: &'static[Self::BaseField] = &[
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Fq2::new(
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MontFp!("793479390729215512621379701633421447060886740281060493010456487427281649075476305620758731620350"),
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Fq::ZERO
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)
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];
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const LAMBDA: Self::ScalarField = MontFp!("228988810152649578064853576960394133503");
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const SCALAR_DECOMP_COEFFS: [(bool, <Self::ScalarField as PrimeField>::BigInt); 4] = [
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(false, BigInt!("228988810152649578064853576960394133503")),
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(true, BigInt!("1")),
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(false, BigInt!("1")),
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(false, BigInt!("228988810152649578064853576960394133504")),
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];
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fn endomorphism(p: &Projective<Self>) -> Projective<Self> {
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let mut res = (*p).clone();
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res.x *= Self::ENDO_COEFFS[0];
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res
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}
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fn endomorphism_affine(p: &Affine<Self>) -> Affine<Self> {
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let mut res = (*p).clone();
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res.x *= Self::ENDO_COEFFS[0];
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res
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}
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}
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pub const G2_GENERATOR_X: Fq2 = Fq2::new(G2_GENERATOR_X_C0, G2_GENERATOR_X_C1);
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pub const G2_GENERATOR_Y: Fq2 = Fq2::new(G2_GENERATOR_Y_C0, G2_GENERATOR_Y_C1);
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@@ -8,6 +8,8 @@ use crate::{Bls12_381, Fq, Fq2, Fr, G1Affine, G1Projective, G2Affine, G2Projecti
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test_group!(g1; G1Projective; sw);
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test_group!(g2; G2Projective; sw);
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test_group!(g1_glv; G1Projective; glv);
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test_group!(g2_glv; G2Projective; glv);
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test_group!(pairing_output; ark_ec::pairing::PairingOutput<Bls12_381>; msm);
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test_pairing!(pairing; crate::Bls12_381);
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test_h2c!(g1_h2c; "./src/curves/tests"; "BLS12381G1"; crate::g1::Config; crate::Fq; crate::Fq; 1);
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@@ -1,8 +1,10 @@
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use ark_ec::{
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bn,
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models::{short_weierstrass::SWCurveConfig, CurveConfig},
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short_weierstrass::Affine,
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scalar_mul::glv::GLVConfig,
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short_weierstrass::{Affine, Projective},
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};
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use ark_ff::{AdditiveGroup, Field, MontFp, Zero};
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use ark_ff::{AdditiveGroup, BigInt, Field, MontFp, PrimeField, Zero};
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use crate::{Fq, Fr};
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@@ -36,6 +38,42 @@ impl SWCurveConfig for Config {
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fn mul_by_a(_: Self::BaseField) -> Self::BaseField {
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Self::BaseField::zero()
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}
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#[inline]
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fn mul_projective(
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p: &bn::G1Projective<crate::Config>,
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scalar: &[u64],
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) -> bn::G1Projective<crate::Config> {
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let s = Self::ScalarField::from_sign_and_limbs(true, scalar);
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GLVConfig::glv_mul_projective(*p, s)
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}
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}
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impl GLVConfig for Config {
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const ENDO_COEFFS: &'static [Self::BaseField] = &[MontFp!(
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"21888242871839275220042445260109153167277707414472061641714758635765020556616"
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)];
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const LAMBDA: Self::ScalarField =
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MontFp!("21888242871839275217838484774961031246154997185409878258781734729429964517155");
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const SCALAR_DECOMP_COEFFS: [(bool, <Self::ScalarField as PrimeField>::BigInt); 4] = [
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(false, BigInt!("147946756881789319000765030803803410728")),
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(true, BigInt!("9931322734385697763")),
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(false, BigInt!("9931322734385697763")),
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(false, BigInt!("147946756881789319010696353538189108491")),
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];
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fn endomorphism(p: &Projective<Self>) -> Projective<Self> {
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let mut res = (*p).clone();
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res.x *= Self::ENDO_COEFFS[0];
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res
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}
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fn endomorphism_affine(p: &Affine<Self>) -> Affine<Self> {
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let mut res = (*p).clone();
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res.x *= Self::ENDO_COEFFS[0];
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res
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}
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}
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/// G1_GENERATOR_X = 1
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@@ -1,8 +1,9 @@
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use ark_ec::{
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models::{short_weierstrass::SWCurveConfig, CurveConfig},
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short_weierstrass::Affine,
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scalar_mul::glv::GLVConfig,
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short_weierstrass::{Affine, Projective},
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};
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use ark_ff::{AdditiveGroup, MontFp, Zero};
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use ark_ff::{AdditiveGroup, BigInt, MontFp, PrimeField, Zero};
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use crate::{Fq, Fq2, Fr};
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@@ -50,6 +51,35 @@ impl SWCurveConfig for Config {
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}
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}
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impl GLVConfig for Config {
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const ENDO_COEFFS: &'static [Self::BaseField] = &[Fq2::new(
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MontFp!("21888242871839275220042445260109153167277707414472061641714758635765020556616"),
|
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Fq::ZERO,
|
||||
)];
|
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|
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const LAMBDA: Self::ScalarField =
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MontFp!("4407920970296243842393367215006156084916469457145843978461");
|
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|
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const SCALAR_DECOMP_COEFFS: [(bool, <Self::ScalarField as PrimeField>::BigInt); 4] = [
|
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(false, BigInt!("147946756881789319010696353538189108491")),
|
||||
(false, BigInt!("9931322734385697763")),
|
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(true, BigInt!("9931322734385697763")),
|
||||
(false, BigInt!("147946756881789319000765030803803410728")),
|
||||
];
|
||||
|
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fn endomorphism(p: &Projective<Self>) -> Projective<Self> {
|
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let mut res = (*p).clone();
|
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res.x *= Self::ENDO_COEFFS[0];
|
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res
|
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}
|
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|
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fn endomorphism_affine(p: &Affine<Self>) -> Affine<Self> {
|
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let mut res = (*p).clone();
|
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res.x *= Self::ENDO_COEFFS[0];
|
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res
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||||
}
|
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}
|
||||
|
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pub const G2_GENERATOR_X: Fq2 = Fq2::new(G2_GENERATOR_X_C0, G2_GENERATOR_X_C1);
|
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pub const G2_GENERATOR_Y: Fq2 = Fq2::new(G2_GENERATOR_Y_C0, G2_GENERATOR_Y_C1);
|
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|
||||
|
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@@ -7,3 +7,5 @@ test_group!(g1; G1Projective; sw);
|
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test_group!(g2; G2Projective; sw);
|
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test_group!(pairing_output; ark_ec::pairing::PairingOutput<Bn254>; msm);
|
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test_pairing!(pairing; crate::Bn254);
|
||||
test_group!(g1_glv; G1Projective; glv);
|
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test_group!(g2_glv; G2Projective; glv);
|
||||
|
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@@ -1,8 +1,9 @@
|
||||
use ark_ec::{
|
||||
models::{short_weierstrass::SWCurveConfig, CurveConfig},
|
||||
scalar_mul::glv::GLVConfig,
|
||||
short_weierstrass::{Affine, Projective},
|
||||
};
|
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use ark_ff::{AdditiveGroup, MontFp};
|
||||
use ark_ff::{AdditiveGroup, BigInt, MontFp, PrimeField};
|
||||
|
||||
use crate::{Fq, Fr};
|
||||
|
||||
@@ -49,6 +50,46 @@ impl SWCurveConfig for Config {
|
||||
}
|
||||
}
|
||||
|
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impl GLVConfig for Config {
|
||||
const ENDO_COEFFS: &'static [Self::BaseField] = &[MontFp!(
|
||||
"4922464560225523242118178942575080391082002530232324381063048548642823052024664478336818169867474395270858391911405337707247735739826664939444490469542109391530482826728203582549674992333383150446779312029624171857054392282775648"
|
||||
)];
|
||||
|
||||
const LAMBDA: Self::ScalarField =
|
||||
MontFp!("258664426012969093929703085429980814127835149614277183275038967946009968870203535512256352201271898244626862047231");
|
||||
|
||||
const SCALAR_DECOMP_COEFFS: [(bool, <Self::ScalarField as PrimeField>::BigInt); 4] = [
|
||||
(
|
||||
true,
|
||||
BigInt!("293634935485640680722085584138834120324914961969255022593"),
|
||||
),
|
||||
(
|
||||
false,
|
||||
BigInt!("293634935485640680722085584138834120315328839056164388863"),
|
||||
),
|
||||
(
|
||||
true,
|
||||
BigInt!("293634935485640680722085584138834120315328839056164388863"),
|
||||
),
|
||||
(
|
||||
true,
|
||||
BigInt!("587269870971281361444171168277668240640243801025419411456"),
|
||||
),
|
||||
];
|
||||
|
||||
fn endomorphism(p: &Projective<Self>) -> Projective<Self> {
|
||||
let mut res = (*p).clone();
|
||||
res.x *= Self::ENDO_COEFFS[0];
|
||||
res
|
||||
}
|
||||
|
||||
fn endomorphism_affine(p: &Affine<Self>) -> Affine<Self> {
|
||||
let mut res = (*p).clone();
|
||||
res.x *= Self::ENDO_COEFFS[0];
|
||||
res
|
||||
}
|
||||
}
|
||||
|
||||
/// G1_GENERATOR_X =
|
||||
/// 6238772257594679368032145693622812838779005809760824733138787810501188623461307351759238099287535516224314149266511977132140828635950940021790489507611754366317801811090811367945064510304504157188661901055903167026722666149426237
|
||||
pub const G1_GENERATOR_X: Fq = MontFp!("6238772257594679368032145693622812838779005809760824733138787810501188623461307351759238099287535516224314149266511977132140828635950940021790489507611754366317801811090811367945064510304504157188661901055903167026722666149426237");
|
||||
|
||||
@@ -1,8 +1,9 @@
|
||||
use ark_ec::{
|
||||
models::{short_weierstrass::SWCurveConfig, CurveConfig},
|
||||
scalar_mul::glv::GLVConfig,
|
||||
short_weierstrass::{Affine, Projective},
|
||||
};
|
||||
use ark_ff::{AdditiveGroup, MontFp};
|
||||
use ark_ff::{AdditiveGroup, BigInt, MontFp, PrimeField};
|
||||
|
||||
use crate::{Fq, Fr};
|
||||
|
||||
@@ -50,6 +51,46 @@ impl SWCurveConfig for Config {
|
||||
}
|
||||
}
|
||||
|
||||
impl GLVConfig for Config {
|
||||
const ENDO_COEFFS: &'static [Self::BaseField] = &[
|
||||
MontFp!("4922464560225523242118178942575080391082002530232324381063048548642823052024664478336818169867474395270858391911405337707247735739826664939444490469542109391530482826728203582549674992333383150446779312029624171857054392282775648"),
|
||||
];
|
||||
|
||||
const LAMBDA: Self::ScalarField =
|
||||
MontFp!("80949648264912719408558363140637477264845294720710499478137287262712535938301461879813459410945");
|
||||
|
||||
const SCALAR_DECOMP_COEFFS: [(bool, <Self::ScalarField as PrimeField>::BigInt); 4] = [
|
||||
(
|
||||
true,
|
||||
BigInt!("293634935485640680722085584138834120315328839056164388863"),
|
||||
),
|
||||
(
|
||||
false,
|
||||
BigInt!("293634935485640680722085584138834120324914961969255022593"),
|
||||
),
|
||||
(
|
||||
true,
|
||||
BigInt!("293634935485640680722085584138834120324914961969255022593"),
|
||||
),
|
||||
(
|
||||
true,
|
||||
BigInt!("587269870971281361444171168277668240640243801025419411456"),
|
||||
),
|
||||
];
|
||||
|
||||
fn endomorphism(p: &Projective<Self>) -> Projective<Self> {
|
||||
let mut res = (*p).clone();
|
||||
res.x *= Self::ENDO_COEFFS[0];
|
||||
res
|
||||
}
|
||||
|
||||
fn endomorphism_affine(p: &Affine<Self>) -> Affine<Self> {
|
||||
let mut res = (*p).clone();
|
||||
res.x *= Self::ENDO_COEFFS[0];
|
||||
res
|
||||
}
|
||||
}
|
||||
|
||||
/// G2_GENERATOR_X =
|
||||
/// 6445332910596979336035888152774071626898886139774101364933948236926875073754470830732273879639675437155036544153105017729592600560631678554299562762294743927912429096636156401171909259073181112518725201388196280039960074422214428
|
||||
pub const G2_GENERATOR_X: Fq = MontFp!("6445332910596979336035888152774071626898886139774101364933948236926875073754470830732273879639675437155036544153105017729592600560631678554299562762294743927912429096636156401171909259073181112518725201388196280039960074422214428");
|
||||
|
||||
@@ -6,3 +6,5 @@ test_group!(g1; G1Projective; sw);
|
||||
test_group!(g2; G2Projective; sw);
|
||||
test_group!(pairing_output; ark_ec::pairing::PairingOutput<BW6_761>; msm);
|
||||
test_pairing!(pairing; crate::BW6_761);
|
||||
test_group!(g1_glv; G1Projective; glv);
|
||||
test_group!(g2_glv; G2Projective; glv);
|
||||
|
||||
@@ -1,8 +1,9 @@
|
||||
use ark_ec::{
|
||||
models::CurveConfig,
|
||||
scalar_mul::glv::GLVConfig,
|
||||
short_weierstrass::{self as sw, SWCurveConfig},
|
||||
};
|
||||
use ark_ff::{AdditiveGroup, Field, MontFp, Zero};
|
||||
use ark_ff::{AdditiveGroup, BigInt, Field, MontFp, PrimeField, Zero};
|
||||
|
||||
use crate::{fq::Fq, fr::Fr};
|
||||
|
||||
@@ -42,6 +43,40 @@ impl SWCurveConfig for PallasConfig {
|
||||
}
|
||||
}
|
||||
|
||||
impl GLVConfig for PallasConfig {
|
||||
const ENDO_COEFFS: &'static [Self::BaseField] = &[MontFp!(
|
||||
"20444556541222657078399132219657928148671392403212669005631716460534733845831"
|
||||
)];
|
||||
|
||||
const LAMBDA: Self::ScalarField =
|
||||
MontFp!("26005156700822196841419187675678338661165322343552424574062261873906994770353");
|
||||
|
||||
const SCALAR_DECOMP_COEFFS: [(bool, <Self::ScalarField as PrimeField>::BigInt); 4] = [
|
||||
(false, BigInt!("98231058071100081932162823354453065728")),
|
||||
(true, BigInt!("98231058071186745657228807397848383489")),
|
||||
(false, BigInt!("196462116142286827589391630752301449217")),
|
||||
(false, BigInt!("98231058071100081932162823354453065728")),
|
||||
];
|
||||
|
||||
fn endomorphism(p: &Projective) -> Projective {
|
||||
// Endomorphism of the points on the curve.
|
||||
// endomorphism_p(x,y) = (BETA * x, y)
|
||||
// where BETA is a non-trivial cubic root of unity in Fq.
|
||||
let mut res = (*p).clone();
|
||||
res.x *= Self::ENDO_COEFFS[0];
|
||||
res
|
||||
}
|
||||
|
||||
fn endomorphism_affine(p: &Affine) -> Affine {
|
||||
// Endomorphism of the points on the curve.
|
||||
// endomorphism_p(x,y) = (BETA * x, y)
|
||||
// where BETA is a non-trivial cubic root of unity in Fq.
|
||||
let mut res = (*p).clone();
|
||||
res.x *= Self::ENDO_COEFFS[0];
|
||||
res
|
||||
}
|
||||
}
|
||||
|
||||
/// G_GENERATOR_X = -1
|
||||
pub const G_GENERATOR_X: Fq = MontFp!("-1");
|
||||
|
||||
|
||||
@@ -2,3 +2,4 @@ use crate::Projective;
|
||||
use ark_algebra_test_templates::*;
|
||||
|
||||
test_group!(g1; Projective; sw);
|
||||
test_group!(g1_glv; Projective; glv);
|
||||
|
||||
@@ -1,9 +1,10 @@
|
||||
use crate::{fq::Fq, fr::Fr};
|
||||
use ark_ec::{
|
||||
models::CurveConfig,
|
||||
scalar_mul::glv::GLVConfig,
|
||||
short_weierstrass::{self as sw, SWCurveConfig},
|
||||
};
|
||||
use ark_ff::{AdditiveGroup, Field, MontFp, Zero};
|
||||
use ark_ff::{AdditiveGroup, BigInt, Field, MontFp, PrimeField, Zero};
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests;
|
||||
@@ -41,6 +42,40 @@ impl SWCurveConfig for VestaConfig {
|
||||
}
|
||||
}
|
||||
|
||||
impl GLVConfig for VestaConfig {
|
||||
const ENDO_COEFFS: &'static [Self::BaseField] = &[MontFp!(
|
||||
"26005156700822196841419187675678338661165322343552424574062261873906994770353"
|
||||
)];
|
||||
|
||||
const LAMBDA: Self::ScalarField =
|
||||
MontFp!("20444556541222657078399132219657928148671392403212669005631716460534733845831");
|
||||
|
||||
const SCALAR_DECOMP_COEFFS: [(bool, <Self::ScalarField as PrimeField>::BigInt); 4] = [
|
||||
(false, BigInt!("98231058071100081932162823354453065729")),
|
||||
(true, BigInt!("98231058071186745657228807397848383488")),
|
||||
(false, BigInt!("196462116142286827589391630752301449217")),
|
||||
(false, BigInt!("98231058071100081932162823354453065729")),
|
||||
];
|
||||
|
||||
fn endomorphism(p: &Projective) -> Projective {
|
||||
// Endomorphism of the points on the curve.
|
||||
// endomorphism_p(x,y) = (BETA * x, y)
|
||||
// where BETA is a non-trivial cubic root of unity in Fq.
|
||||
let mut res = (*p).clone();
|
||||
res.x *= Self::ENDO_COEFFS[0];
|
||||
res
|
||||
}
|
||||
|
||||
fn endomorphism_affine(p: &Affine) -> Affine {
|
||||
// Endomorphism of the points on the curve.
|
||||
// endomorphism_p(x,y) = (BETA * x, y)
|
||||
// where BETA is a non-trivial cubic root of unity in Fq.
|
||||
let mut res = (*p).clone();
|
||||
res.x *= Self::ENDO_COEFFS[0];
|
||||
res
|
||||
}
|
||||
}
|
||||
|
||||
/// G_GENERATOR_X = -1
|
||||
/// Encoded in Montgomery form, so the value here is -R mod p.
|
||||
pub const G_GENERATOR_X: Fq = MontFp!("-1");
|
||||
|
||||
@@ -2,3 +2,4 @@ use crate::Projective;
|
||||
use ark_algebra_test_templates::*;
|
||||
|
||||
test_group!(g1; Projective; sw);
|
||||
test_group!(g1_glv; Projective; glv);
|
||||
|
||||
Reference in New Issue
Block a user