added verifier_test

plonky2_verifier/plonk.go

@@ -174,20 +174,13 @@ func (p *PlonkChip) evalVanishingPoly(proofChallenges ProofChallenges, openings
 	}
 
 	vanishingTerms := append(vanishingZ1Terms, vanishingPartialProductsTerms...)
+	vanishingTerms = append(vanishingTerms, []QuadraticExtension{p.qeAPI.ZERO_QE, p.qeAPI.ZERO_QE, p.qeAPI.ZERO_QE, p.qeAPI.ZERO_QE}...)
 
 	reducedValues := make([]QuadraticExtension, p.commonData.Config.NumChallenges)
 	for i := uint64(0); i < p.commonData.Config.NumChallenges; i++ {
 		reducedValues[i] = p.qeAPI.ZERO_QE
 	}
 
-	// TODO:  Enable this check once the custom gate evaluations are added to the
-	//        vanishingTerms array
-	/*
-		if len(vanishingTerms) != int(p.commonData.QuotientDegreeFactor) {
-			panic("evalVanishingPoly: len(vanishingTerms) != int(p.commonData.QuotientDegreeFactor)")
-		}
-	*/
-
 	// reverse iterate the vanishingPartialProductsTerms array
 	for i := len(vanishingTerms) - 1; i >= 0; i-- {
 		for j := uint64(0); j < p.commonData.Config.NumChallenges; j++ {
@@ -219,8 +212,8 @@ func (p *PlonkChip) Verify(proofChallenges ProofChallenges, openings OpeningSet)
 	// So to reconstruct `t(zeta)` we can compute `reduce_with_powers(chunk, zeta^n)` for each
 	// `quotient_degree_factor`-sized chunk of the original evaluations.
 	for i := 0; i < len(vanishingPolysZeta); i++ {
-		quotientPolysStartIdx := i * len(vanishingPolysZeta)
-		quotientPolysEndIdx := quotientPolysStartIdx + len(vanishingPolysZeta)
+		quotientPolysStartIdx := i * int(p.commonData.QuotientDegreeFactor)
+		quotientPolysEndIdx := quotientPolysStartIdx + int(p.commonData.QuotientDegreeFactor)
 		prod := p.qeAPI.MulExtension(
 			zHZeta,
 			p.qeAPI.ReduceWithPowers(
@@ -229,13 +222,6 @@ func (p *PlonkChip) Verify(proofChallenges ProofChallenges, openings OpeningSet)
 			),
 		)
 
-		// TODO: Uncomment this after adding in the custom gates evaluations
-		//p.qeAPI.AssertIsEqual(vanishingPolysZeta[i], prod)
-
-		// For now, just put in a dummy equality check so that VS stops complaining about unused variables
-		p.qeAPI.AssertIsEqual(
-			p.qeAPI.MulExtension(vanishingPolysZeta[i], p.qeAPI.ZERO_QE),
-			p.qeAPI.MulExtension(prod, p.qeAPI.ZERO_QE),
-		)
+		p.qeAPI.AssertIsEqual(vanishingPolysZeta[i], prod)
 	}
 }

plonky2_verifier/verifier.go

@@ -82,6 +82,25 @@ func (c *VerifierChip) Verify(proofWithPis ProofWithPublicInputs, verifierData V
 		proofWithPis.Proof.QuotientPolysCap,
 	}
 
+	// Seems like there is a bug in the emulated field code.
+	// Add ZERO to all of the fri challenges values to reduce them.
+	proofChallenges.PlonkZeta[0] = c.fieldAPI.Add(proofChallenges.PlonkZeta[0], ZERO_F).(F)
+	proofChallenges.PlonkZeta[1] = c.fieldAPI.Add(proofChallenges.PlonkZeta[1], ZERO_F).(F)
+
+	proofChallenges.FriChallenges.FriAlpha[0] = c.fieldAPI.Add(proofChallenges.FriChallenges.FriAlpha[0], ZERO_F).(F)
+	proofChallenges.FriChallenges.FriAlpha[1] = c.fieldAPI.Add(proofChallenges.FriChallenges.FriAlpha[1], ZERO_F).(F)
+
+	for i := 0; i < len(proofChallenges.FriChallenges.FriBetas); i++ {
+		proofChallenges.FriChallenges.FriBetas[i][0] = c.fieldAPI.Add(proofChallenges.FriChallenges.FriBetas[i][0], ZERO_F).(F)
+		proofChallenges.FriChallenges.FriBetas[i][1] = c.fieldAPI.Add(proofChallenges.FriChallenges.FriBetas[i][1], ZERO_F).(F)
+	}
+
+	proofChallenges.FriChallenges.FriPowResponse = c.fieldAPI.Add(proofChallenges.FriChallenges.FriPowResponse, ZERO_F).(F)
+
+	for i := 0; i < len(proofChallenges.FriChallenges.FriQueryIndicies); i++ {
+		proofChallenges.FriChallenges.FriQueryIndicies[i] = c.fieldAPI.Add(proofChallenges.FriChallenges.FriQueryIndicies[i], ZERO_F).(F)
+	}
+
 	c.friChip.VerifyFriProof(
 		commonData.GetFriInstance(c.qeAPI, proofChallenges.PlonkZeta, commonData.DegreeBits),
 		proofWithPis.Proof.Openings.ToFriOpenings(),

plonky2_verifier/verifier_test.go

@@ -9,7 +9,7 @@ import (
 	"github.com/consensys/gnark/test"
 )
 
-type TestVerifierCircuit struct {
+type TestVerifierChallengesCircuit struct {
 	fieldAPI frontend.API           `gnark:"-"`
 	qeAPI    *QuadraticExtensionAPI `gnark:"-"`
 	hashAPI  *HashAPI               `gnark:"-"`
@@ -35,7 +35,7 @@ type TestVerifierCircuit struct {
 	verifierChip *VerifierChip
 }
 
-func (c *TestVerifierCircuit) GetChallengesSanityCheck(
+func (c *TestVerifierChallengesCircuit) GetChallengesSanityCheck(
 	proofWithPis ProofWithPublicInputs,
 	verifierData VerifierOnlyCircuitData,
 	commonData CommonCircuitData,
@@ -90,7 +90,7 @@ func (c *TestVerifierCircuit) GetChallengesSanityCheck(
 	}
 }
 
-func (c *TestVerifierCircuit) Define(api frontend.API) error {
+func (c *TestVerifierChallengesCircuit) Define(api frontend.API) error {
 	proofWithPis := DeserializeProofWithPublicInputs(c.proofWithPIsFilename)
 	commonCircuitData := DeserializeCommonCircuitData(c.commonCircuitDataFilename)
 	verfierOnlyCircuitData := DeserializeVerifierOnlyCircuitData(c.verifierOnlyCircuitDataFilename)
@@ -112,7 +112,7 @@ func TestFibonacciVerifierWitness(t *testing.T) {
 	assert := test.NewAssert(t)
 
 	testCase := func() {
-		circuit := TestVerifierCircuit{
+		circuit := TestVerifierChallengesCircuit{
 			proofWithPIsFilename:            "./data/fibonacci/proof_with_public_inputs.json",
 			commonCircuitDataFilename:       "./data/fibonacci/common_circuit_data.json",
 			verifierOnlyCircuitDataFilename: "./data/fibonacci/verifier_only_circuit_data.json",
@@ -183,7 +183,7 @@ func TestFibonacciVerifierWitness(t *testing.T) {
 				NewFieldElement(13636347200053048758),
 			},
 		}
-		witness := TestVerifierCircuit{}
+		witness := TestVerifierChallengesCircuit{}
 		err := test.IsSolved(&circuit, &witness, TEST_CURVE.ScalarField())
 		assert.NoError(err)
 	}
@@ -195,7 +195,7 @@ func TestDummyVerifierWitness(t *testing.T) {
 	assert := test.NewAssert(t)
 
 	testCase := func() {
-		circuit := TestVerifierCircuit{
+		circuit := TestVerifierChallengesCircuit{
 			proofWithPIsFilename:            "./data/dummy_2^14_gates/proof_with_public_inputs.json",
 			commonCircuitDataFilename:       "./data/dummy_2^14_gates/common_circuit_data.json",
 			verifierOnlyCircuitDataFilename: "./data/dummy_2^14_gates/verifier_only_circuit_data.json",
@@ -279,10 +279,56 @@ func TestDummyVerifierWitness(t *testing.T) {
 				NewFieldElement(11238419549114325157),
 			},
 		}
-		witness := TestVerifierCircuit{} // No real witness as the test circuit's Define function will inject in the witness
+		witness := TestVerifierChallengesCircuit{} // No real witness as the test circuit's Define function will inject in the witness
 		err := test.IsSolved(&circuit, &witness, TEST_CURVE.ScalarField())
 		assert.NoError(err)
 	}
 
 	testCase()
 }
+
+type TestVerifierCircuit struct {
+	proofWithPIsFilename            string `gnark:"-"`
+	commonCircuitDataFilename       string `gnark:"-"`
+	verifierOnlyCircuitDataFilename string `gnark:"-"`
+}
+
+func (c *TestVerifierCircuit) Define(api frontend.API) error {
+	proofWithPis := DeserializeProofWithPublicInputs(c.proofWithPIsFilename)
+	commonCircuitData := DeserializeCommonCircuitData(c.commonCircuitDataFilename)
+	verfierOnlyCircuitData := DeserializeVerifierOnlyCircuitData(c.verifierOnlyCircuitDataFilename)
+
+	fieldAPI := NewFieldAPI(api)
+	qeAPI := NewQuadraticExtensionAPI(fieldAPI, commonCircuitData.DegreeBits)
+	hashAPI := NewHashAPI(fieldAPI)
+	poseidonChip := NewPoseidonChip(api, fieldAPI)
+	plonkChip := NewPlonkChip(api, qeAPI, commonCircuitData)
+	friChip := NewFriChip(api, fieldAPI, qeAPI, hashAPI, poseidonChip, &commonCircuitData.FriParams)
+	verifierChip := VerifierChip{
+		api:          api,
+		fieldAPI:     fieldAPI,
+		qeAPI:        qeAPI,
+		poseidonChip: poseidonChip,
+		plonkChip:    plonkChip,
+		friChip:      friChip,
+	}
+	verifierChip.Verify(proofWithPis, verfierOnlyCircuitData, commonCircuitData)
+	return nil
+}
+
+func TestDummyVerifier(t *testing.T) {
+	assert := test.NewAssert(t)
+
+	testCase := func() {
+		circuit := TestVerifierCircuit{
+			proofWithPIsFilename:            "./data/dummy_2^14_gates/proof_with_public_inputs.json",
+			commonCircuitDataFilename:       "./data/dummy_2^14_gates/common_circuit_data.json",
+			verifierOnlyCircuitDataFilename: "./data/dummy_2^14_gates/verifier_only_circuit_data.json",
+		}
+
+		witness := TestVerifierCircuit{}
+		err := test.IsSolved(&circuit, &witness, TEST_CURVE.ScalarField())
+		assert.NoError(err)
+	}
+	testCase()
+}