make modules&methods pub, rm unused self in gadget

- remove unused self for SumcheckVerificationCircuit gadget (verifiy_sumcheck)
- make some modules & methods pub to be used from outside of the repo
- small typos fixes

src/constraints.rs

@@ -21,7 +21,7 @@ use ark_r1cs_std::{
 };
 use ark_relations::r1cs::{ConstraintSynthesizer, ConstraintSystemRef, Namespace, SynthesisError};
 
-pub struct PoseidonTranscripVar<F>
+pub struct PoseidonTranscriptVar<F>
 where
   F: PrimeField,
 {
@@ -29,11 +29,11 @@ where
   pub sponge: PoseidonSpongeVar<F>,
 }
 
-impl<F> PoseidonTranscripVar<F>
+impl<F> PoseidonTranscriptVar<F>
 where
   F: PrimeField,
 {
-  fn new(cs: ConstraintSystemRef<F>, params: &PoseidonConfig<F>, c_var: FpVar<F>) -> Self {
+  pub fn new(cs: ConstraintSystemRef<F>, params: &PoseidonConfig<F>, c_var: FpVar<F>) -> Self {
     let mut sponge = PoseidonSpongeVar::new(cs.clone(), params);
 
     sponge.absorb(&c_var).unwrap();
@@ -120,16 +120,15 @@ pub struct SumcheckVerificationCircuit {
 }
 
 impl<F: PrimeField> SumcheckVerificationCircuit<F> {
-  fn verifiy_sumcheck(
-    &self,
+  pub fn verify_sumcheck(
     poly_vars: &[UniPolyVar<F>],
     claim_var: &FpVar<F>,
-    transcript_var: &mut PoseidonTranscripVar<F>,
+    transcript_var: &mut PoseidonTranscriptVar<F>,
   ) -> Result<(FpVar<F>, Vec<FpVar<F>>), SynthesisError> {
     let mut e_var = claim_var.clone();
     let mut r_vars: Vec<FpVar<F>> = Vec::new();
 
-    for (poly_var, _poly) in poly_vars.iter().zip(self.polys.iter()) {
+    for poly_var in poly_vars.iter() {
       let res = poly_var.eval_at_one() + poly_var.eval_at_zero();
       res.enforce_equal(&e_var)?;
       transcript_var.append_vector(&poly_var.coeffs)?;
@@ -264,7 +263,7 @@ impl ConstraintSynthesizer for R1CSVerificationCircuit {
   fn generate_constraints(self, cs: ConstraintSystemRef<F>) -> ark_relations::r1cs::Result<()> {
     let initial_challenge_var = FpVar::<F>::new_input(cs.clone(), || Ok(self.prev_challenge))?;
     let mut transcript_var =
-      PoseidonTranscripVar::new(cs.clone(), &self.params, initial_challenge_var);
+      PoseidonTranscriptVar::new(cs.clone(), &self.params, initial_challenge_var);
 
     let poly_sc1_vars = self
       .sc_phase1
@@ -307,10 +306,11 @@ impl ConstraintSynthesizer for R1CSVerificationCircuit {
 
     let claim_phase1_var = FpVar::<F>::new_witness(cs.clone(), || Ok(F::zero()))?;
 
-    let (claim_post_phase1_var, rx_var) =
-      self
-        .sc_phase1
-        .verifiy_sumcheck(&poly_sc1_vars, &claim_phase1_var, &mut transcript_var)?;
+    let (claim_post_phase1_var, rx_var) = SumcheckVerificationCircuit::<F>::verify_sumcheck(
+      &poly_sc1_vars,
+      &claim_phase1_var,
+      &mut transcript_var,
+    )?;
 
     // The prover sends (rx, ry) to the verifier for the evaluation proof so
     // the constraints need to ensure it is indeed the result from the first
@@ -347,10 +347,11 @@ impl ConstraintSynthesizer for R1CSVerificationCircuit {
     let claim_phase2_var =
       &r_A_var * &Az_claim_var + &r_B_var * &Bz_claim_var + &r_C_var * &Cz_claim_var;
 
-    let (claim_post_phase2_var, ry_var) =
-      self
-        .sc_phase2
-        .verifiy_sumcheck(&poly_sc2_vars, &claim_phase2_var, &mut transcript_var)?;
+    let (claim_post_phase2_var, ry_var) = SumcheckVerificationCircuit::<F>::verify_sumcheck(
+      &poly_sc2_vars,
+      &claim_phase2_var,
+      &mut transcript_var,
+    )?;
 
     //  Because the verifier checks the commitment opening on point ry outside
     //  the circuit, the prover needs to send ry to the verifier (making the

src/lib.rs

@@ -17,7 +17,7 @@ extern crate json;
 extern crate rayon;
 
 mod commitments;
-mod dense_mlpoly;
+pub mod dense_mlpoly;
 mod errors;
 #[macro_use]
 pub(crate) mod macros;
@@ -25,20 +25,20 @@ mod math;
 pub(crate) mod mipp;
 mod nizk;
 mod product_tree;
-mod r1csinstance;
-mod r1csproof;
+pub mod r1csinstance;
+pub mod r1csproof;
 mod sparse_mlpoly;
 pub mod sqrt_pst;
-mod sumcheck;
+pub mod sumcheck;
 pub mod testudo_nizk;
 pub mod testudo_snark;
 mod timer;
-pub(crate) mod transcript;
+pub mod transcript;
 mod unipoly;
 
 pub mod parameters;
 
-mod constraints;
+pub mod constraints;
 pub mod poseidon_transcript;
 
 use core::cmp::max;

src/r1csproof.rs

@@ -607,7 +607,7 @@ mod tests {
     let inst_evals = inst.evaluate(&rx, &ry);
 
     prover_transcript.new_from_state(&c);
-    let verifer_proof = proof
+    let verifier_proof = proof
       .prove_verifier(
         num_vars,
         num_cons,
@@ -620,7 +620,7 @@ mod tests {
       .unwrap();
 
     let mut verifier_transcript = PoseidonTranscript::new(&params.clone());
-    assert!(verifer_proof
+    assert!(verifier_proof
       .verify(
         (rx, ry),
         &input,

src/testudo_snark.rs

@@ -116,7 +116,7 @@ where
   // Returns the Testudo SNARK proof which has two components:
   // * proof that the R1CS instance is satisfiable
   // * proof that the evlauation of matrices A, B and C on point (x,y)
-  // resulted from the two rounda of sumcheck are correct
+  // resulted from the two rounds of sumcheck are correct
   pub fn prove(
     inst: &Instance<E::ScalarField>,
     comm: &ComputationCommitment<E::G1>,