1use ark_ec::{
 2    models::CurveConfig,
 3    short_weierstrass::{self as sw, SWCurveConfig},
 4};
 5use ark_ff::{Field, MontFp, Zero};
 6
 7use crate::{fq::Fq, fr::Fr};
 8
 9#[cfg(test)]
10mod tests;
11
12pub type Affine = sw::Affine<Parameters>;
13pub type Projective = sw::Projective<Parameters>;
14
15#[derive(Copy, Clone, Default, PartialEq, Eq)]
16pub struct Parameters;
17
18impl CurveConfig for Parameters {
19    type BaseField = Fq;
20    type ScalarField = Fr;
21
22    /// COFACTOR = 1
23    const COFACTOR: &'static [u64] = &[0x1];
24
25    /// COFACTOR_INV = COFACTOR^{-1} mod r = 1
26    #[rustfmt::skip]
27    const COFACTOR_INV: Fr =  Fr::ONE;
28}
29
30impl SWCurveConfig for Parameters {
31    /// COEFF_A = 0
32    const COEFF_A: Fq = Fq::ZERO;
33
34    /// COEFF_B = 7
35    const COEFF_B: Fq = MontFp!("7");
36
37    /// GENERATOR = (G_GENERATOR_X, G_GENERATOR_Y)
38    const GENERATOR: Affine = Affine::new_unchecked(G_GENERATOR_X, G_GENERATOR_Y);
39
40    #[inline(always)]
41    fn mul_by_a(_: Self::BaseField) -> Self::BaseField {
42        Self::BaseField::zero()
43    }
44}
45
46/// G_GENERATOR_X = 53718550993811904772965658690407829053653678808745171666022356150019200052646
47pub const G_GENERATOR_X: Fq =
48    MontFp!("53718550993811904772965658690407829053653678808745171666022356150019200052646");
49
50/// G_GENERATOR_Y = 28941648020349172432234515805717979317553499307621291159490218670604692907903
51pub const G_GENERATOR_Y: Fq =
52    MontFp!("28941648020349172432234515805717979317553499307621291159490218670604692907903");