Initial commit

bn254/src/curves/g1.rs

@@ -0,0 +1,67 @@
+use ark_ec::models::{ModelParameters, SWModelParameters};
+use ark_ff::{biginteger::BigInteger256, field_new, Zero};
+
+use crate::{Fq, Fr};
+
+#[derive(Clone, Default, PartialEq, Eq)]
+pub struct Parameters;
+
+impl ModelParameters for Parameters {
+    type BaseField = Fq;
+    type ScalarField = Fr;
+}
+
+impl SWModelParameters for Parameters {
+    /// COEFF_A = 0
+    const COEFF_A: Fq = field_new!(Fq, BigInteger256([0x0, 0x0, 0x0, 0x0]));
+
+    /// COEFF_B = 3
+    #[rustfmt::skip]
+    const COEFF_B: Fq = field_new!(Fq, BigInteger256([
+        0x7a17caa950ad28d7,
+        0x1f6ac17ae15521b9,
+        0x334bea4e696bd284,
+        0x2a1f6744ce179d8e,
+    ]));
+
+    /// COFACTOR = 1
+    const COFACTOR: &'static [u64] = &[0x1];
+
+    /// COFACTOR_INV = COFACTOR^{-1} mod r = 1
+    #[rustfmt::skip]
+    const COFACTOR_INV: Fr = field_new!(Fr, BigInteger256([
+        0xac96341c4ffffffb,
+        0x36fc76959f60cd29,
+        0x666ea36f7879462e,
+        0xe0a77c19a07df2f,
+    ]));
+
+    /// AFFINE_GENERATOR_COEFFS = (G1_GENERATOR_X, G1_GENERATOR_Y)
+    const AFFINE_GENERATOR_COEFFS: (Self::BaseField, Self::BaseField) =
+        (G1_GENERATOR_X, G1_GENERATOR_Y);
+
+    #[inline(always)]
+    fn mul_by_a(_: &Self::BaseField) -> Self::BaseField {
+        Self::BaseField::zero()
+    }
+}
+
+/// G1_GENERATOR_X =
+/// 1
+#[rustfmt::skip]
+pub const G1_GENERATOR_X: Fq = field_new!(Fq, BigInteger256([
+    0xd35d438dc58f0d9d,
+    0x0a78eb28f5c70b3d,
+    0x666ea36f7879462c,
+    0x0e0a77c19a07df2f,
+]));
+
+/// G1_GENERATOR_Y =
+/// 2
+#[rustfmt::skip]
+pub const G1_GENERATOR_Y: Fq = field_new!(Fq, BigInteger256([
+    0xa6ba871b8b1e1b3a,
+    0x14f1d651eb8e167b,
+    0xccdd46def0f28c58,
+    0x1c14ef83340fbe5e,
+]));