fix: use latest names for groth16 traits/types

Cargo.toml

@@ -15,7 +15,7 @@ ark-ec = { version = "0.3.0", default-features = false }
 ark-ff = { version = "0.3.0", default-features = false }
 ark-std = { version = "0.3.0", default-features = false }
 ark-bn254 = { version = "0.3.0" }
-ark-groth16 = { git = "https://github.com/kobigurk/groth16", version = "0.3.0", branch = "feat/customizable-r1cs-to-qap" }
+ark-groth16 = { git = "https://github.com/gakonst/groth16", version = "0.3.0", branch = "feat/customizable-r1cs-to-qap" }
 ark-poly = { version = "^0.3.0", default-features = false }
 ark-relations = { version = "0.3.0", default-features = false }
 ark-serialize = { version = "0.3.0", default-features = false }

src/circom/mod.rs

@@ -10,7 +10,7 @@ mod builder;
 pub use builder::{CircomBuilder, CircomConfig};
 
 mod qap;
-pub use qap::R1CStoQAPCircom;
+pub use qap::CircomReduction;
 
 pub type Constraints<E> = (ConstraintVec<E>, ConstraintVec<E>, ConstraintVec<E>);
 pub type ConstraintVec<E> = Vec<(usize, <E as PairingEngine>::Fr)>;

src/circom/qap.rs

@@ -1,5 +1,5 @@
 use ark_ff::PrimeField;
-use ark_groth16::r1cs_to_qap::{evaluate_constraint, QAPCalculator, R1CStoQAP};
+use ark_groth16::r1cs_to_qap::{evaluate_constraint, LibsnarkReduction, R1CStoQAP};
 use ark_poly::EvaluationDomain;
 use ark_relations::r1cs::{ConstraintSystemRef, SynthesisError};
 use ark_std::{cfg_into_iter, cfg_iter, cfg_iter_mut, vec};
@@ -10,15 +10,15 @@ use core::ops::Deref;
 /// coefficients domain. snarkjs instead precomputes the Lagrange form of the powers of tau bases
 /// in a domain twice as large and the witness map is computed as the odd coefficients of (AB-C)
 /// in that domain. This serves as HZ when computing the C proof element.
-pub struct R1CStoQAPCircom;
+pub struct CircomReduction;
 
-impl QAPCalculator for R1CStoQAPCircom {
+impl R1CStoQAP for CircomReduction {
     #[allow(clippy::type_complexity)]
     fn instance_map_with_evaluation<F: PrimeField, D: EvaluationDomain<F>>(
         cs: ConstraintSystemRef<F>,
         t: &F,
     ) -> Result<(Vec<F>, Vec<F>, Vec<F>, F, usize, usize), SynthesisError> {
-        R1CStoQAP::instance_map_with_evaluation::<F, D>(cs, t)
+        LibsnarkReduction::instance_map_with_evaluation::<F, D>(cs, t)
     }
 
     fn witness_map<F: PrimeField, D: EvaluationDomain<F>>(

src/lib.rs

@@ -4,7 +4,7 @@
 mod witness;
 
 pub mod circom;
-pub use circom::{CircomBuilder, CircomCircuit, CircomConfig, R1CStoQAPCircom};
+pub use circom::{CircomBuilder, CircomCircuit, CircomConfig, CircomReduction};
 
 pub mod ethereum;
 

src/zkey.rs

@@ -299,7 +299,7 @@ mod tests {
     use serde_json::Value;
     use std::fs::File;
 
-    use crate::{circom::R1CStoQAPCircom, CircomBuilder, CircomConfig};
+    use crate::{circom::CircomReduction, CircomBuilder, CircomConfig};
     use ark_groth16::{create_random_proof_with_qap as prove, prepare_verifying_key, verify_proof};
     use ark_std::rand::thread_rng;
     use num_traits::{One, Zero};
@@ -783,7 +783,7 @@ mod tests {
         let inputs = circom.get_public_inputs().unwrap();
 
         let mut rng = thread_rng();
-        let proof = prove::<_, _, _, R1CStoQAPCircom>(circom, &params, &mut rng).unwrap();
+        let proof = prove::<_, _, _, CircomReduction>(circom, &params, &mut rng).unwrap();
 
         let pvk = prepare_verifying_key(&params.vk);