diff --git a/cubic.go b/cubic.go new file mode 100644 index 0000000..89557e7 --- /dev/null +++ b/cubic.go @@ -0,0 +1,72 @@ +// Copyright 2020 ConsenSys AG +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package main + +import ( + "fmt" + "os" + "github.com/consensys/gnark/frontend" + "github.com/consensys/gnark-crypto/ecc" + "github.com/consensys/gnark/frontend/cs/r1cs" + "github.com/consensys/gnark/backend/groth16" +) + +// Circuit defines a simple circuit +// x**3 + x + 5 == y +type Circuit struct { + // struct tags on a variable is optional + // default uses variable name and secret visibility. + X frontend.Variable `gnark:"x"` + Y frontend.Variable `gnark:",public"` +} + +// Define declares the circuit constraints +// x**3 + x + 5 == y +func (circuit *Circuit) Define(api frontend.API) error { + x3 := api.Mul(circuit.X, circuit.X, circuit.X) + api.AssertIsEqual(circuit.Y, api.Add(x3, circuit.X, 5)) + return nil +} + +func main() { + err := mainImpl() + if err != nil { + fmt.Println(err) + os.Exit(1) + } +} + +func mainImpl() error { + var myCircuit Circuit + r1cs, err := frontend.Compile(ecc.BN254.ScalarField(), r1cs.NewBuilder, &myCircuit) + if err != nil { + return err + } + + assignment := &Circuit{ + X: "2", + Y: "15", + } + witness, _ := frontend.NewWitness(assignment, ecc.BN254.ScalarField()) + publicWitness, _ := witness.Public() + pk, vk, err := groth16.Setup(r1cs) + proof, err := groth16.Prove(r1cs, pk, witness) + err = groth16.Verify(proof, vk, publicWitness) + if err != nil { + return err + } + fmt.Println(proof) + return nil +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..cb77b50 --- /dev/null +++ b/go.mod @@ -0,0 +1,19 @@ +module cubic + +go 1.19 + +require ( + github.com/blang/semver/v4 v4.0.0 // indirect + github.com/consensys/bavard v0.1.13 // indirect + github.com/consensys/gnark v0.7.2-0.20220915193524-b33f88c79af6 // indirect + github.com/consensys/gnark-crypto v0.8.1-0.20220819163559-143c75519b0e // indirect + github.com/fxamacker/cbor/v2 v2.2.0 // indirect + github.com/google/pprof v0.0.0-20220729232143-a41b82acbcb1 // indirect + github.com/mattn/go-colorable v0.1.13 // indirect + github.com/mattn/go-isatty v0.0.16 // indirect + github.com/mmcloughlin/addchain v0.4.0 // indirect + github.com/rs/zerolog v1.28.0 // indirect + github.com/x448/float16 v0.8.4 // indirect + golang.org/x/sys v0.0.0-20220928140112-f11e5e49a4ec // indirect + rsc.io/tmplfunc v0.0.3 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..e6bdffb --- /dev/null +++ b/go.sum @@ -0,0 +1,43 @@ +github.com/blang/semver/v4 v4.0.0 h1:1PFHFE6yCCTv8C1TeyNNarDzntLi7wMI5i/pzqYIsAM= +github.com/blang/semver/v4 v4.0.0/go.mod h1:IbckMUScFkM3pff0VJDNKRiT6TG/YpiHIM2yvyW5YoQ= +github.com/consensys/bavard v0.1.13 h1:oLhMLOFGTLdlda/kma4VOJazblc7IM5y5QPd2A/YjhQ= +github.com/consensys/bavard v0.1.13/go.mod h1:9ItSMtA/dXMAiL7BG6bqW2m3NdSEObYWoH223nGHukI= +github.com/consensys/gnark v0.7.0 h1:zyI8zPAhSazrZPeQpKIFUHLgrnAuxI+EDrFLNizKb9I= +github.com/consensys/gnark v0.7.0/go.mod h1:oQnMurInsfe+9rG4l8qh8AFVihfuRCS5H3XPJH/6HPM= +github.com/consensys/gnark v0.7.2-0.20220915193524-b33f88c79af6 h1:T19XI5vxnMPOdoyyubM81cYr4MHll0n67EDrRjtA2Pg= +github.com/consensys/gnark v0.7.2-0.20220915193524-b33f88c79af6/go.mod h1:iN7/IRE6Eu2QKnTJEsoS48suBV0O5XrM+Nzo1ipp6Zw= +github.com/consensys/gnark-crypto v0.7.0 h1:rwdy8+ssmLYRqKp+ryRRgQJl/rCq2uv+n83cOydm5UE= +github.com/consensys/gnark-crypto v0.7.0/go.mod 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