Files
ark-curves-cherry-picked/mnt6_298/src/curves/mod.rs
mmagician 42289245a6 Replace ATE_LOOP_COUNT with its 2-NAF for MNT curves (#107)
* Replace ATE_LOOP_COUNT by its 2-NAF

* Add constant references

* Apply suggestions from code review

Co-authored-by: Weikeng Chen <w.k@berkeley.edu>
2022-09-02 08:19:51 -07:00

50 lines
1.9 KiB
Rust

use ark_ec::{
models::mnt6::{MNT6Parameters, MNT6},
short_weierstrass::SWCurveConfig,
};
use ark_ff::{biginteger::BigInteger320, BigInt, Field, Fp3};
use crate::{Fq, Fq3Config, Fq6Config, Fr};
pub mod g1;
pub mod g2;
#[cfg(test)]
mod tests;
pub use self::{
g1::{G1Affine, G1Prepared, G1Projective},
g2::{G2Affine, G2Prepared, G2Projective},
};
pub type MNT6_298 = MNT6<Parameters>;
pub struct Parameters;
impl MNT6Parameters for Parameters {
const TWIST: Fp3<Self::Fp3Config> = Fp3::<Self::Fp3Config>::new(Fq::ZERO, Fq::ONE, Fq::ZERO);
const TWIST_COEFF_A: Fp3<Self::Fp3Config> =
Fp3::<Self::Fp3Config>::new(Fq::ZERO, Fq::ZERO, g1::Parameters::COEFF_A);
// https://github.com/o1-labs/snarky/blob/9c21ab2bb23874604640740d646a932e813432c3/snarkette/mnt4_80.ml#L88
const ATE_LOOP_COUNT: &'static [i8] = &[
1, 0, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, -1,
0, 1, 0, -1, 0, 0, 0, 0, 0, 1, 0, 1, 0, -1, 0, 0, 0, -1, 0, -1, 0, -1, 0, 0, -1, 0, -1, 0,
0, 0, 0, 0, -1, 0, -1, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, -1, 0, 1, 0, 0, 0, 0, 0, -1,
0, 0, 0, 1, 0, 0, -1, 0, 0, -1, 0, 0, 1, 0, 1, 0, -1, 0, 1, 0, 0, 0, 1, 0, 0, -1, 0, 0, -1,
0, -1, 0, 1, 0, 0, -1, 0, 0, 1, 0, -1, 0, -1, 0, 1, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0,
];
const ATE_IS_LOOP_COUNT_NEG: bool = true;
const FINAL_EXPONENT_LAST_CHUNK_1: BigInteger320 = BigInt::new([0x1, 0x0, 0x0, 0x0, 0x0]);
const FINAL_EXPONENT_LAST_CHUNK_W0_IS_NEG: bool = true;
const FINAL_EXPONENT_LAST_CHUNK_ABS_OF_W0: BigInteger320 =
BigInt::new([0xdc9a1b671660000, 0x46609756bec2a33f, 0x1eef55, 0x0, 0x0]);
type Fp = Fq;
type Fr = Fr;
type Fp3Config = Fq3Config;
type Fp6Config = Fq6Config;
type G1Parameters = self::g1::Parameters;
type G2Parameters = self::g2::Parameters;
}