Replace pairing with zkcrypto/pairing (privacy-scaling-exploratio…

…ns#69)

replace local `pairing` with `zkcrypto/pairing`

Cargo.toml

@@ -19,6 +19,7 @@ bincode = "1.3.3"
 subtle = "2.4"
 ff = { version = "0.13.0", default-features = false, features = ["std"] }
 group = "0.13.0"
+pairing = "0.23.0"
 pasta_curves = "0.5.0"
 static_assertions = "1.1.0"
 rand = "0.8"

src/bn256/engine.rs

@@ -8,10 +8,10 @@ use crate::bn256::fr::*;
 use crate::ff::{Field, PrimeField};
 use crate::group::cofactor::CofactorCurveAffine;
 use crate::group::Group;
-use crate::pairing::{Engine, MillerLoopResult, MultiMillerLoop, PairingCurveAffine};
 use core::borrow::Borrow;
 use core::iter::Sum;
 use core::ops::{Add, Mul, MulAssign, Neg, Sub};
+use pairing::{Engine, MillerLoopResult, MultiMillerLoop, PairingCurveAffine};
 use rand_core::RngCore;
 use subtle::{Choice, ConditionallySelectable, ConstantTimeEq};
 
@@ -633,7 +633,7 @@ pub fn pairing(g1: &G1Affine, g2: &G2Affine) -> Gt {
 pub struct Bn256;
 
 impl Engine for Bn256 {
- type Scalar = Fr;
+ type Fr = Fr;
  type G1 = G1;
  type G1Affine = G1Affine;
  type G2 = G2;

src/lib.rs

@@ -1,6 +1,5 @@
 mod arithmetic;
 pub mod hash_to_curve;
-pub mod pairing;
 pub mod serde;
 
 pub mod bn256;