More Nova forward ports

benches/compressed-snark.rs

@@ -5,7 +5,7 @@ use core::marker::PhantomData;
 use criterion::*;
 use ff::PrimeField;
 use nova_snark::{
-  provider::pasta::{PallasEngine, VestaEngine},
+  provider::{PallasEngine, VestaEngine},
   traits::{
     circuit::{StepCircuit, TrivialCircuit},
     snark::RelaxedR1CSSNARKTrait,

benches/compute-digest.rs

@@ -4,7 +4,7 @@ use bellpepper_core::{num::AllocatedNum, ConstraintSystem, SynthesisError};
 use criterion::{black_box, criterion_group, criterion_main, Criterion};
 use ff::PrimeField;
 use nova_snark::{
-  provider::pasta::{PallasEngine, VestaEngine},
+  provider::{PallasEngine, VestaEngine},
   traits::{
     circuit::{StepCircuit, TrivialCircuit},
     snark::default_ck_hint,

benches/recursive-snark-supernova.rs

@@ -5,7 +5,7 @@ use core::marker::PhantomData;
 use criterion::*;
 use ff::PrimeField;
 use nova_snark::{
-  provider::pasta::{PallasEngine, VestaEngine},
+  provider::{PallasEngine, VestaEngine},
   supernova::NonUniformCircuit,
   supernova::{PublicParams, RecursiveSNARK},
   traits::{

benches/recursive-snark.rs

@@ -5,7 +5,7 @@ use core::marker::PhantomData;
 use criterion::*;
 use ff::PrimeField;
 use nova_snark::{
-  provider::pasta::{PallasEngine, VestaEngine},
+  provider::{PallasEngine, VestaEngine},
   traits::{
     circuit::{StepCircuit, TrivialCircuit},
     snark::default_ck_hint,

benches/sha256.rs

@@ -14,7 +14,7 @@ use core::time::Duration;
 use criterion::*;
 use ff::{PrimeField, PrimeFieldBits};
 use nova_snark::{
-  provider::pasta::{PallasEngine, VestaEngine},
+  provider::{PallasEngine, VestaEngine},
   traits::{
     circuit::{StepCircuit, TrivialCircuit},
     snark::default_ck_hint,

examples/minroot.rs

@@ -5,7 +5,7 @@ use bellpepper_core::{num::AllocatedNum, ConstraintSystem, SynthesisError};
 use ff::PrimeField;
 use flate2::{write::ZlibEncoder, Compression};
 use nova_snark::{
-  provider::pasta::{PallasEngine, VestaEngine},
+  provider::{PallasEngine, VestaEngine},
   traits::{
     circuit::{StepCircuit, TrivialCircuit},
     snark::default_ck_hint,
@@ -47,10 +47,12 @@ impl<F: PrimeField> MinRootIteration<F> {
       let x_i_plus_1 = (x_i + y_i).pow_vartime(exp.to_u64_digits()); // computes the fifth root of x_i + y_i
 
       // sanity check
-      let sq = x_i_plus_1 * x_i_plus_1;
-      let quad = sq * sq;
-      let fifth = quad * x_i_plus_1;
-      debug_assert_eq!(fifth, x_i + y_i);
+      if cfg!(debug_assertions) {
+        let sq = x_i_plus_1 * x_i_plus_1;
+        let quad = sq * sq;
+        let fifth = quad * x_i_plus_1;
+        assert_eq!(fifth, x_i + y_i);
+      }
 
       let y_i_plus_1 = x_i;
 
@@ -230,7 +232,7 @@ fn main() {
       )
       .unwrap();
 
-    for (i, circuit_primary) in minroot_circuits.iter().take(num_steps).enumerate() {
+    for (i, circuit_primary) in minroot_circuits.iter().enumerate() {
       let start = Instant::now();
       let res = recursive_snark.prove_step(&pp, circuit_primary, &circuit_secondary);
       assert!(res.is_ok());

examples/minroot_serde.rs

@@ -8,7 +8,7 @@ use abomonation_derive::Abomonation;
 use bellpepper_core::{num::AllocatedNum, ConstraintSystem, SynthesisError};
 use ff::PrimeField;
 use nova_snark::{
-  provider::pasta::{PallasEngine, VestaEngine},
+  provider::{PallasEngine, VestaEngine},
   traits::{
     circuit::{StepCircuit, TrivialCircuit},
     snark::default_ck_hint,

src/bellpepper/mod.rs

@@ -15,7 +15,7 @@ mod tests {
       shape_cs::ShapeCS,
       solver::SatisfyingAssignment,
     },
-    provider::{bn256_grumpkin::Bn256Engine, pasta::PallasEngine, secp_secq::Secp256k1Engine},
+    provider::{Bn256Engine, PallasEngine, Secp256k1Engine},
     traits::{snark::default_ck_hint, Engine},
   };
   use bellpepper_core::{num::AllocatedNum, ConstraintSystem};

src/circuit.rs

@@ -372,10 +372,9 @@ mod tests {
     constants::{BN_LIMB_WIDTH, BN_N_LIMBS},
     gadgets::utils::scalar_as_base,
     provider::{
-      bn256_grumpkin::{Bn256Engine, GrumpkinEngine},
-      pasta::{PallasEngine, VestaEngine},
       poseidon::PoseidonConstantsCircuit,
-      secp_secq::{Secp256k1Engine, Secq256k1Engine},
+      {Bn256Engine, GrumpkinEngine}, {PallasEngine, VestaEngine},
+      {Secp256k1Engine, Secq256k1Engine},
     },
     traits::{circuit::TrivialCircuit, snark::default_ck_hint},
   };

src/digest.rs

@@ -81,7 +81,7 @@ impl<'a, F: PrimeField, T: Digestible> DigestComputer<'a, F, T> {
 #[cfg(test)]
 mod tests {
   use super::{DigestComputer, SimpleDigestible};
-  use crate::{provider::pasta::PallasEngine, traits::Engine};
+  use crate::{provider::PallasEngine, traits::Engine};
   use ff::Field;
   use once_cell::sync::OnceCell;
   use serde::{Deserialize, Serialize};

src/gadgets/ecc.rs

@@ -788,9 +788,9 @@ mod tests {
       {solver::SatisfyingAssignment, test_shape_cs::TestShapeCS},
     },
     provider::{
-      bn256_grumpkin::{bn256, grumpkin, Bn256Engine, GrumpkinEngine},
-      pasta::{PallasEngine, VestaEngine},
-      secp_secq::{secp256k1, secq256k1, Secp256k1Engine, Secq256k1Engine},
+      bn256_grumpkin::{bn256, grumpkin},
+      secp_secq::{secp256k1, secq256k1},
+      Bn256Engine, GrumpkinEngine, Secp256k1Engine, Secq256k1Engine, {PallasEngine, VestaEngine},
     },
     traits::snark::default_ck_hint,
   };

src/lib.rs

@@ -161,7 +161,7 @@ where
   /// ```rust
   /// # use nova_snark::spartan::ppsnark::RelaxedR1CSSNARK;
   /// # use nova_snark::provider::ipa_pc::EvaluationEngine;
-  /// # use nova_snark::provider::pasta::{PallasEngine, VestaEngine};
+  /// # use nova_snark::provider::{PallasEngine, VestaEngine};
   /// # use nova_snark::traits::{circuit::TrivialCircuit, Engine, snark::RelaxedR1CSSNARKTrait};
   /// use nova_snark::PublicParams;
   ///
@@ -945,10 +945,8 @@ mod tests {
   use super::*;
   use crate::{
     provider::{
-      bn256_grumpkin::{Bn256Engine, GrumpkinEngine},
-      pasta::{PallasEngine, VestaEngine},
-      secp_secq::{Secp256k1Engine, Secq256k1Engine},
-      DlogGroup,
+      traits::DlogGroup, Bn256Engine, GrumpkinEngine, PallasEngine, Secp256k1Engine,
+      Secq256k1Engine, VestaEngine,
     },
     traits::{evaluation::EvaluationEngineTrait, snark::default_ck_hint},
   };

src/nifs.rs

@@ -121,7 +121,7 @@ mod tests {
       solver::SatisfyingAssignment,
       test_shape_cs::TestShapeCS,
     },
-    provider::{bn256_grumpkin::Bn256Engine, pasta::PallasEngine, secp_secq::Secp256k1Engine},
+    provider::{Bn256Engine, PallasEngine, Secp256k1Engine},
     r1cs::{commitment_key, SparseMatrix},
     traits::{snark::default_ck_hint, Engine},
   };

src/provider/bn256_grumpkin.rs

@@ -2,13 +2,10 @@
 use crate::{
   impl_traits,
   provider::{
-    cpu_best_multiexp,
-    keccak::Keccak256Transcript,
-    pedersen::CommitmentEngine,
-    poseidon::{PoseidonRO, PoseidonROCircuit},
-    CompressedGroup, DlogGroup,
+    msm::cpu_best_msm,
+    traits::{CompressedGroup, DlogGroup},
   },
-  traits::{Engine, Group, PrimeFieldExt, TranscriptReprTrait},
+  traits::{Group, PrimeFieldExt, TranscriptReprTrait},
 };
 use digest::{ExtendableOutput, Update};
 use ff::{FromUniformBytes, PrimeField};
@@ -30,28 +27,15 @@ use halo2curves::grumpkin::{
 
 /// Re-exports that give access to the standard aliases used in the code base, for bn256
 pub mod bn256 {
-  pub use halo2curves::bn256::{
-    Fq as Base, Fr as Scalar, G1Affine as Affine, G1Compressed as Compressed, G1 as Point,
-  };
+  pub use halo2curves::bn256::{Fq as Base, Fr as Scalar, G1Affine as Affine, G1 as Point};
 }
 
 /// Re-exports that give access to the standard aliases used in the code base, for grumpkin
 pub mod grumpkin {
-  pub use halo2curves::grumpkin::{
-    Fq as Base, Fr as Scalar, G1Affine as Affine, G1Compressed as Compressed, G1 as Point,
-  };
+  pub use halo2curves::grumpkin::{Fq as Base, Fr as Scalar, G1Affine as Affine, G1 as Point};
 }
 
-/// An implementation of the Nova `Engine` trait with BN254 curve and Pedersen commitment scheme
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
-pub struct Bn256Engine;
-
-/// An implementation of the Nova `Engine` trait with Grumpkin curve and Pedersen commitment scheme
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
-pub struct GrumpkinEngine;
-
 impl_traits!(
-  Bn256Engine,
   bn256,
   Bn256Compressed,
   Bn256Point,
@@ -61,45 +45,10 @@ impl_traits!(
 );
 
 impl_traits!(
-  GrumpkinEngine,
   grumpkin,
   GrumpkinCompressed,
   GrumpkinPoint,
   GrumpkinAffine,
   "30644e72e131a029b85045b68181585d97816a916871ca8d3c208c16d87cfd47",
   "30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001"
 );
-
-#[cfg(test)]
-mod tests {
-  use super::*;
-  type G = bn256::Point;
-
-  fn from_label_serial(label: &'static [u8], n: usize) -> Vec<Bn256Affine> {
-    let mut shake = Shake256::default();
-    shake.update(label);
-    let mut reader = shake.finalize_xof();
-    let mut ck = Vec::new();
-    for _ in 0..n {
-      let mut uniform_bytes = [0u8; 32];
-      reader.read_exact(&mut uniform_bytes).unwrap();
-      let hash = bn256::Point::hash_to_curve("from_uniform_bytes");
-      ck.push(hash(&uniform_bytes).to_affine());
-    }
-    ck
-  }
-
-  #[test]
-  fn test_from_label() {
-    let label = b"test_from_label";
-    for n in [
-      1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 1021,
-    ] {
-      let ck_par = <G as DlogGroup>::from_label(label, n);
-      let ck_ser = from_label_serial(label, n);
-      assert_eq!(ck_par.len(), n);
-      assert_eq!(ck_ser.len(), n);
-      assert_eq!(ck_par, ck_ser);
-    }
-  }
-}

src/provider/ipa_pc.rs

@@ -1,7 +1,7 @@
 //! This module implements `EvaluationEngine` using an IPA-based polynomial commitment scheme
 use crate::{
   errors::NovaError,
-  provider::{pedersen::CommitmentKeyExtTrait, DlogGroup},
+  provider::{pedersen::CommitmentKeyExtTrait, traits::DlogGroup},
   spartan::polys::eq::EqPolynomial,
   traits::{
     commitment::{CommitmentEngineTrait, CommitmentTrait},

src/provider/keccak.rs

@@ -101,9 +101,7 @@ mod tests {
   use crate::{
     provider::keccak::Keccak256Transcript,
     provider::{
-      bn256_grumpkin::{Bn256Engine, GrumpkinEngine},
-      pasta::{PallasEngine, VestaEngine},
-      secp_secq::{Secp256k1Engine, Secq256k1Engine},
+      Bn256Engine, GrumpkinEngine, PallasEngine, Secp256k1Engine, Secq256k1Engine, VestaEngine,
     },
     traits::{Engine, PrimeFieldExt, TranscriptEngineTrait, TranscriptReprTrait},
   };