snarkvm-curves 4.6.2

Curves for a decentralized virtual machine
Documentation 
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// Copyright (c) 2019-2026 Provable Inc.
// This file is part of the snarkVM library.

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at:

// http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use crate::{
    templates::{
        short_weierstrass_jacobian::{Affine as SWAffine, Projective as SWProjective},
        twisted_edwards_extended::{Affine as TEAffine, Projective as TEProjective},
    },
    traits::{ProjectiveCurve, ShortWeierstrassParameters, TwistedEdwardsParameters},
};
use snarkvm_fields::{ConstraintFieldError, Field, ToConstraintField};

impl<M: TwistedEdwardsParameters, F: Field> ToConstraintField<F> for TEAffine<M>
where
    M::BaseField: ToConstraintField<F>,
{
    #[inline]
    fn to_field_elements(&self) -> Result<Vec<F>, ConstraintFieldError> {
        let mut x_fe = self.x.to_field_elements()?;
        let y_fe = self.y.to_field_elements()?;
        x_fe.extend_from_slice(&y_fe);
        Ok(x_fe)
    }
}

impl<M: TwistedEdwardsParameters, F: Field> ToConstraintField<F> for TEProjective<M>
where
    M::BaseField: ToConstraintField<F>,
{
    #[inline]
    fn to_field_elements(&self) -> Result<Vec<F>, ConstraintFieldError> {
        let affine = self.to_affine();
        let mut x_fe = affine.x.to_field_elements()?;
        let y_fe = affine.y.to_field_elements()?;
        x_fe.extend_from_slice(&y_fe);
        Ok(x_fe)
    }
}

impl<M: ShortWeierstrassParameters, F: Field> ToConstraintField<F> for SWAffine<M>
where
    M::BaseField: ToConstraintField<F>,
{
    #[inline]
    fn to_field_elements(&self) -> Result<Vec<F>, ConstraintFieldError> {
        let mut x_fe = self.x.to_field_elements()?;
        let y_fe = self.y.to_field_elements()?;
        let infinity_fe = self.infinity.to_field_elements()?;
        x_fe.extend_from_slice(&y_fe);
        x_fe.extend_from_slice(&infinity_fe);
        Ok(x_fe)
    }
}

impl<M: ShortWeierstrassParameters, F: Field> ToConstraintField<F> for SWProjective<M>
where
    M::BaseField: ToConstraintField<F>,
{
    #[inline]
    fn to_field_elements(&self) -> Result<Vec<F>, ConstraintFieldError> {
        let affine = self.to_affine();
        let mut x_fe = affine.x.to_field_elements()?;
        let y_fe = affine.y.to_field_elements()?;
        x_fe.extend_from_slice(&y_fe);
        Ok(x_fe)
    }
}