serialize proof and witness (#27)

benchmark.go

@@ -115,6 +115,11 @@ func createProof(plonky2Circuit string, r1cs constraint.ConstraintSystem, pk gro
 	fmt.Println("Generating witness", time.Now())
 	witness, _ := frontend.NewWitness(assignment, ecc.BN254.ScalarField())
 	publicWitness, _ := witness.Public()
+	if serialize {
+		fWitness, _ := os.Create("witness")
+		witness.WriteTo(fWitness)
+		fWitness.Close()
+	}
 
 	fmt.Println("Creating proof", time.Now())
 	proof, err := groth16.Prove(r1cs, pk, witness)
@@ -122,6 +127,12 @@ func createProof(plonky2Circuit string, r1cs constraint.ConstraintSystem, pk gro
 		fmt.Println(err)
 		os.Exit(1)
 	}
+	if serialize {
+		fProof, _ := os.Create("proof.proof")
+		proof.WriteTo(fProof)
+		fProof.Close()
+	}
+
 	fmt.Println("Verifying proof", time.Now())
 	err = groth16.Verify(proof, vk, publicWitness)
 	if err != nil {