Initial commit

bls12_377/src/curves/g1.rs

@@ -0,0 +1,77 @@
+use ark_ec::models::{ModelParameters, SWModelParameters};
+use ark_ff::{
+    biginteger::{BigInteger256, BigInteger384},
+    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, BigInteger384([0x0, 0x0, 0x0, 0x0, 0x0, 0x0]));
+
+    /// COEFF_B = 1
+    #[rustfmt::skip]
+    const COEFF_B: Fq = field_new!(Fq, BigInteger384([
+        0x2cdffffffffff68,
+        0x51409f837fffffb1,
+        0x9f7db3a98a7d3ff2,
+        0x7b4e97b76e7c6305,
+        0x4cf495bf803c84e8,
+        0x8d6661e2fdf49a,
+    ]));
+
+    /// COFACTOR = (x - 1)^2 / 3  = 30631250834960419227450344600217059328
+    const COFACTOR: &'static [u64] = &[0x0, 0x170b5d4430000000];
+
+    /// COFACTOR_INV = COFACTOR^{-1} mod r
+    /// = 5285428838741532253824584287042945485047145357130994810877
+    #[rustfmt::skip]
+    const COFACTOR_INV: Fr = field_new!(Fr, BigInteger256([
+        2013239619100046060,
+        4201184776506987597,
+        2526766393982337036,
+        1114629510922847535,
+    ]));
+
+    /// 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 =
+/// 81937999373150964239938255573465948239988671502647976594219695644855304257327692006745978603320413799295628339695
+#[rustfmt::skip]
+pub const G1_GENERATOR_X: Fq = field_new!(Fq, BigInteger384([
+    0x260f33b9772451f4,
+    0xc54dd773169d5658,
+    0x5c1551c469a510dd,
+    0x761662e4425e1698,
+    0xc97d78cc6f065272,
+    0xa41206b361fd4d,
+]));
+
+/// G1_GENERATOR_Y =
+/// 241266749859715473739788878240585681733927191168601896383759122102112907357779751001206799952863815012735208165030
+#[rustfmt::skip]
+pub const G1_GENERATOR_Y: Fq = field_new!(Fq, BigInteger384([
+    0x8193961fb8cb81f3,
+    0x638d4c5f44adb8,
+    0xfafaf3dad4daf54a,
+    0xc27849e2d655cd18,
+    0x2ec3ddb401d52814,
+    0x7da93326303c71,
+]));