Add FiatShamirRng

Author: vlopes11

src/constraints/ahp.rs

@@ -8,7 +8,7 @@ use crate::{
     sponge::CryptographicSpongeVarNonNative,
     CryptographicSpongeParameters, PhantomData, PrimeField, String, ToString, Vec,
 };
-use ark_nonnative_field::NonNativeFieldVar;
+use ark_nonnative_field::{params::OptimizationType, NonNativeFieldVar};
 use ark_poly::univariate::DensePolynomial;
 use ark_poly_commit::{
     EvaluationsVar, LCTerm, LabeledPointVar, LinearCombinationCoeffVar, LinearCombinationVar,
@@ -103,7 +103,7 @@ where
                 elems.append(&mut comm.to_constraint_field().unwrap());
             });
             sponge_var.absorb(&elems)?;
-            sponge_var.absorb_nonnative(&message)?;
+            sponge_var.absorb_nonnative(&message, OptimizationType::Weight)?;
         }
 
         // obtain four elements from the sponge_var
@@ -153,7 +153,7 @@ where
                 elems.append(&mut comm.to_constraint_field().unwrap());
             });
             sponge_var.absorb(&elems)?;
-            sponge_var.absorb_nonnative(&message)?;
+            sponge_var.absorb_nonnative(&message, OptimizationType::Weight)?;
         }
 
         // obtain one element from the sponge_var
@@ -195,7 +195,7 @@ where
                 elems.append(&mut comm.to_constraint_field().unwrap());
             });
             sponge_var.absorb(&elems)?;
-            sponge_var.absorb_nonnative(&message)?;
+            sponge_var.absorb_nonnative(&message, OptimizationType::Weight)?;
         }
 
         // obtain one element from the sponge_var

src/constraints/snark.rs

@@ -8,8 +8,8 @@ use crate::{
     CryptographicSpongeWithRate,
 };
 use crate::{
-    Box, CryptographicSpongeParameters, IndexProverKey, IndexVerifierKey, Marlin, MarlinConfig,
-    PreparedIndexVerifierKey, Proof, String, ToString, UniversalSRS, Vec,
+    Box, CryptographicSpongeParameters, FiatShamirRng, IndexProverKey, IndexVerifierKey, Marlin,
+    MarlinConfig, PreparedIndexVerifierKey, Proof, String, ToString, UniversalSRS, Vec,
 };
 use ark_crypto_primitives::snark::{
     constraints::{SNARKGadget, UniversalSetupSNARKGadget},
@@ -157,7 +157,11 @@ where
     }
 
     fn verify(vk: &Self::VerifyingKey, x: &[F], proof: &Self::Proof) -> Result<bool, Self::Error> {
-        match Marlin::<F, FSF, S, PC, MC>::verify::<OptionalRng<ChaChaRng>>(vk, x, proof, None) {
+        // TODO define a rate
+        let rate = 4;
+        let mut rng: FiatShamirRng<F, FSF, S> = FiatShamirRng::new(rate);
+
+        match Marlin::<F, FSF, S, PC, MC>::verify(vk, x, proof, Some(&mut rng)) {
             Ok(res) => Ok(res),
             Err(e) => Err(Box::new(MarlinError::from(e))),
         }
@@ -513,11 +517,11 @@ mod test {
             "The native verification check fails."
         );
 
-        /*
         let cs_sys = ConstraintSystem::<MNT4Fq>::new();
         let cs = ConstraintSystemRef::new(cs_sys);
         cs.set_optimization_goal(OptimizationGoal::Weight);
 
+        /*
         let input_gadget = <TestSNARKGadget as SNARKGadget<
             <MNT4_298 as PairingEngine>::Fr,
             <MNT4_298 as PairingEngine>::Fq,

src/constraints/verifier.rs

@@ -5,7 +5,7 @@ use crate::{
     CryptographicSpongeParameters, CryptographicSpongeWithRate, Error, PhantomData, PrimeField,
     String, Vec,
 };
-use ark_nonnative_field::NonNativeFieldVar;
+use ark_nonnative_field::{params::OptimizationType, NonNativeFieldVar};
 use ark_poly::univariate::DensePolynomial;
 use ark_poly_commit::{PCCheckRandomDataVar, PCCheckVar, PolynomialCommitment};
 use ark_r1cs_std::{bits::boolean::Boolean, fields::FieldVar, R1CSVar, ToConstraintFieldGadget};
@@ -59,7 +59,7 @@ where
 
         eprintln!("before AHP: constraints: {}", cs.num_constraints());
 
-        sponge_var.absorb_nonnative(&public_input)?;
+        sponge_var.absorb_nonnative(&public_input, OptimizationType::Weight)?;
 
         let (_, verifier_state) = AHPForR1CS::<F, CF, S, SVN, PC, PCG>::verifier_first_round(
             index_pvk.domain_h_size,
@@ -116,7 +116,7 @@ where
             }
         }
 
-        sponge_var.absorb_nonnative(&evals_vec)?;
+        sponge_var.absorb_nonnative(&evals_vec, OptimizationType::Weight)?;
 
         let (opening_challenges, opening_challenges_bits) =
             sponge_var.squeeze_nonnative_field_elements(num_opening_challenges)?;