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Montgomery cannot use TE affine as intermediate representations (#103)

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* debug

* test

* use mont

* reduce the delta

Co-authored-by: onewayfunc <onewayfunc@gmail.com>
This commit is contained in:
Weikeng Chen
2022-09-03 21:22:22 -07:00
committed by GitHub
parent 2416780e0f
commit f2e53be88e
1 changed files with 3 additions and 3 deletions
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6
src/groups/curves/twisted_edwards/mod.rs
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@@ -38,7 +38,7 @@ pub struct MontgomeryAffineVar<
mod montgomery_affine_impl {
use super::*;
use ark_ec::twisted_edwards::Affine as GroupAffine;
use ark_ec::twisted_edwards::MontgomeryAffine as GroupAffine;
use ark_ff::Field;
use core::ops::Add;
@@ -83,8 +83,8 @@ mod montgomery_affine_impl {
pub fn from_edwards_to_coords(
p: &TEAffine<P>,
) -> Result<(P::BaseField, P::BaseField), SynthesisError> {
let montgomery_point: GroupAffine<P> = if p.y == P::BaseField::one() {
GroupAffine::identity()
let montgomery_point: GroupAffine<P::MontCurveConfig> = if p.y == P::BaseField::one() {
return Err(SynthesisError::UnexpectedIdentity);
} else if p.x == P::BaseField::zero() {
GroupAffine::new(P::BaseField::zero(), P::BaseField::zero())
} else {