1package main
  2
  3import (
  4	"bytes"
  5	"flag"
  6	"fmt"
  7	"math/big"
  8	"os"
  9	"time"
 10
 11	"github.com/succinctlabs/gnark-plonky2-verifier/field"
 12	"github.com/succinctlabs/gnark-plonky2-verifier/verifier"
 13	"github.com/succinctlabs/gnark-plonky2-verifier/verifier/common"
 14	"github.com/succinctlabs/gnark-plonky2-verifier/verifier/utils"
 15
 16	"github.com/consensys/gnark-crypto/ecc"
 17	"github.com/consensys/gnark/backend/groth16"
 18	"github.com/consensys/gnark/constraint"
 19	"github.com/consensys/gnark/frontend"
 20	"github.com/consensys/gnark/frontend/cs/r1cs"
 21	"github.com/consensys/gnark/profile"
 22)
 23
 24type BenchmarkPlonky2VerifierCircuit struct {
 25	Proof        common.Proof
 26	PublicInputs []field.F `gnark:",public"`
 27
 28	verifierChip       *verifier.VerifierChip `gnark:"-"`
 29	plonky2CircuitName string                 `gnark:"-"`
 30}
 31
 32func (circuit *BenchmarkPlonky2VerifierCircuit) Define(api frontend.API) error {
 33	circuitDirname := "./verifier/data/" + circuit.plonky2CircuitName + "/"
 34	commonCircuitData := utils.DeserializeCommonCircuitData(circuitDirname + "common_circuit_data.json")
 35	verifierOnlyCircuitData := utils.DeserializeVerifierOnlyCircuitData(circuitDirname + "verifier_only_circuit_data.json")
 36
 37	circuit.verifierChip = verifier.NewVerifierChip(api, commonCircuitData)
 38
 39	circuit.verifierChip.Verify(circuit.Proof, circuit.PublicInputs, verifierOnlyCircuitData, commonCircuitData)
 40
 41	return nil
 42}
 43
 44func compileCircuit(plonky2Circuit string, profileCircuit bool, serialize bool, outputSolidity bool) (constraint.ConstraintSystem, groth16.ProvingKey, groth16.VerifyingKey) {
 45	circuit := BenchmarkPlonky2VerifierCircuit{
 46		plonky2CircuitName: plonky2Circuit,
 47	}
 48	proofWithPis := utils.DeserializeProofWithPublicInputs("./verifier/data/" + plonky2Circuit + "/proof_with_public_inputs.json")
 49	circuit.Proof = proofWithPis.Proof
 50	circuit.PublicInputs = proofWithPis.PublicInputs
 51
 52	var p *profile.Profile
 53	if profileCircuit {
 54		p = profile.Start()
 55	}
 56	r1cs, err := frontend.Compile(ecc.BN254.ScalarField(), r1cs.NewBuilder, &circuit)
 57	if err != nil {
 58		fmt.Println("error in building circuit", err)
 59		os.Exit(1)
 60	}
 61
 62	if profileCircuit {
 63		p.Stop()
 64		p.Top()
 65		println("r1cs.GetNbCoefficients(): ", r1cs.GetNbCoefficients())
 66		println("r1cs.GetNbConstraints(): ", r1cs.GetNbConstraints())
 67		println("r1cs.GetNbSecretVariables(): ", r1cs.GetNbSecretVariables())
 68		println("r1cs.GetNbPublicVariables(): ", r1cs.GetNbPublicVariables())
 69		println("r1cs.GetNbInternalVariables(): ", r1cs.GetNbInternalVariables())
 70	}
 71
 72	// Don't serialize the circuit for now, since it takes up too much memory
 73	/*
 74		if serialize {
 75			fR1CS, _ := os.Create("circuit")
 76			r1cs.WriteTo(fR1CS)
 77			fR1CS.Close()
 78		}
 79	*/
 80
 81	fmt.Println("Running circuit setup", time.Now())
 82	pk, vk, err := groth16.Setup(r1cs)
 83	if err != nil {
 84		fmt.Println(err)
 85		os.Exit(1)
 86	}
 87
 88	if serialize {
 89		fPK, _ := os.Create("proving.key")
 90		pk.WriteTo(fPK)
 91		fPK.Close()
 92
 93		fVK, _ := os.Create("verifying.key")
 94		vk.WriteTo(fVK)
 95		fVK.Close()
 96	}
 97
 98	if outputSolidity {
 99		fSolidity, _ := os.Create("proof.sol")
100		err = vk.ExportSolidity(fSolidity)
101	}
102
103	return r1cs, pk, vk
104}
105
106func createProof(plonky2Circuit string, r1cs constraint.ConstraintSystem, pk groth16.ProvingKey, vk groth16.VerifyingKey, serialize bool) groth16.Proof {
107	proofWithPis := utils.DeserializeProofWithPublicInputs("./verifier/data/" + plonky2Circuit + "/proof_with_public_inputs.json")
108
109	// Witness
110	assignment := &BenchmarkPlonky2VerifierCircuit{
111		Proof:        proofWithPis.Proof,
112		PublicInputs: proofWithPis.PublicInputs,
113	}
114
115	fmt.Println("Generating witness", time.Now())
116	witness, _ := frontend.NewWitness(assignment, ecc.BN254.ScalarField())
117	publicWitness, _ := witness.Public()
118	if serialize {
119		fWitness, _ := os.Create("witness")
120		witness.WriteTo(fWitness)
121		fWitness.Close()
122	}
123
124	fmt.Println("Creating proof", time.Now())
125	proof, err := groth16.Prove(r1cs, pk, witness)
126	if err != nil {
127		fmt.Println(err)
128		os.Exit(1)
129	}
130	if serialize {
131		fProof, _ := os.Create("proof.proof")
132		proof.WriteTo(fProof)
133		fProof.Close()
134	}
135
136	fmt.Println("Verifying proof", time.Now())
137	err = groth16.Verify(proof, vk, publicWitness)
138	if err != nil {
139		fmt.Println(err)
140		os.Exit(1)
141	}
142
143	const fpSize = 4 * 8
144	var buf bytes.Buffer
145	proof.WriteRawTo(&buf)
146	proofBytes := buf.Bytes()
147
148	var (
149		a [2]*big.Int
150		b [2][2]*big.Int
151		c [2]*big.Int
152	)
153
154	// proof.Ar, proof.Bs, proof.Krs
155	a[0] = new(big.Int).SetBytes(proofBytes[fpSize*0 : fpSize*1])
156	a[1] = new(big.Int).SetBytes(proofBytes[fpSize*1 : fpSize*2])
157	b[0][0] = new(big.Int).SetBytes(proofBytes[fpSize*2 : fpSize*3])
158	b[0][1] = new(big.Int).SetBytes(proofBytes[fpSize*3 : fpSize*4])
159	b[1][0] = new(big.Int).SetBytes(proofBytes[fpSize*4 : fpSize*5])
160	b[1][1] = new(big.Int).SetBytes(proofBytes[fpSize*5 : fpSize*6])
161	c[0] = new(big.Int).SetBytes(proofBytes[fpSize*6 : fpSize*7])
162	c[1] = new(big.Int).SetBytes(proofBytes[fpSize*7 : fpSize*8])
163
164	println("a[0] is ", a[0].String())
165	println("a[1] is ", a[1].String())
166
167	println("b[0][0] is ", b[0][0].String())
168	println("b[0][1] is ", b[0][1].String())
169	println("b[1][0] is ", b[1][0].String())
170	println("b[1][1] is ", b[1][1].String())
171
172	println("c[0] is ", c[0].String())
173	println("c[1] is ", c[1].String())
174
175	return proof
176}
177
178func main() {
179	plonky2Circuit := flag.String("plonky2-circuit", "", "plonky2 circuit to benchmark")
180	profileCircuit := flag.Bool("profile", false, "profile the circuit")
181	serialize := flag.Bool("serialize", false, "serialize the circuit")
182	outputSolidity := flag.Bool("solidity", false, "output solidity code for the circuit")
183
184	flag.Parse()
185
186	if plonky2Circuit == nil || *plonky2Circuit == "" {
187		fmt.Println("Please provide a plonky2 circuit to benchmark")
188		os.Exit(1)
189	}
190
191	r1cs, pk, vk := compileCircuit(*plonky2Circuit, *profileCircuit, *serialize, *outputSolidity)
192	createProof(*plonky2Circuit, r1cs, pk, vk, *serialize)
193}