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package main
import (
"encoding/json"
"math/big"
"syscall/js"
"github.com/arnaucube/go-snark"
"github.com/arnaucube/go-snark/circuitcompiler"
"github.com/arnaucube/go-snark/groth16"
"github.com/arnaucube/go-snark/utils"
)
func main() {
c := make(chan struct{}, 0)
println("WASM Go Initialized")
registerCallbacks()
<-c
}
func registerCallbacks() {
js.Global().Set("generateProofs", js.FuncOf(generateProofs))
js.Global().Set("verifyProofs", js.FuncOf(verifyProofs))
js.Global().Set("grothGenerateProofs", js.FuncOf(grothGenerateProofs))
js.Global().Set("grothVerifyProofs", js.FuncOf(grothVerifyProofs))
}
func generateProofs(this js.Value, i []js.Value) interface{} {
var circuitStr utils.CircuitString
err := json.Unmarshal([]byte(i[0].String()), &circuitStr)
if err != nil {
println(i[0].String())
println("error parsing circuit from stringified json")
}
circuit, err := utils.CircuitFromString(circuitStr)
if err != nil {
println("error " + err.Error())
}
sj, err := json.Marshal(circuit)
if err != nil {
println("error " + err.Error())
}
println("circuit", string(sj))
var setupStr utils.SetupString
println(i[1].String())
err = json.Unmarshal([]byte(i[1].String()), &setupStr)
if err != nil {
println("error parsing setup from stringified json")
}
setup, err := utils.SetupFromString(setupStr)
if err != nil {
println("error " + err.Error())
}
sj, err = json.Marshal(setup)
if err != nil {
println("error " + err.Error())
}
println("set", string(sj))
var pxStr []string
err = json.Unmarshal([]byte(i[2].String()), &pxStr)
if err != nil {
println("error parsing pxStr from stringified json")
}
px, err := utils.ArrayStringToBigInt(pxStr)
if err != nil {
println(err.Error())
}
sj, err = json.Marshal(px)
if err != nil {
println("error " + err.Error())
}
println("px", string(sj))
var inputs circuitcompiler.Inputs
err = json.Unmarshal([]byte(i[3].String()), &inputs)
if err != nil {
println("error parsing inputs from stringified json")
}
w, err := circuit.CalculateWitness(inputs.Private, inputs.Public)
proof, err := snark.GenerateProofs(circuit, setup.Pk, w, px)
if err != nil {
println("error generating proof", err)
}
proofString := utils.ProofToString(proof)
proofJson, err := json.Marshal(proofString)
if err != nil {
println("error marshal proof to json", err)
}
println("proofJson", string(proofJson))
return js.ValueOf(string(proofJson))
}
func verifyProofs(this js.Value, i []js.Value) interface{} {
var setupStr utils.SetupString
println(i[0].String())
err := json.Unmarshal([]byte(i[0].String()), &setupStr)
if err != nil {
println("error parsing setup from stringified json")
}
setup, err := utils.SetupFromString(setupStr)
if err != nil {
println("error " + err.Error())
}
var proofStr utils.ProofString
err = json.Unmarshal([]byte(i[1].String()), &proofStr)
if err != nil {
println(i[1].String())
println("error parsing proof from stringified json")
}
proof, err := utils.ProofFromString(proofStr)
if err != nil {
println("error " + err.Error())
}
var publicInputs []*big.Int
err = json.Unmarshal([]byte(i[2].String()), &publicInputs)
if err != nil {
println(i[2].String())
println("error parsing publicInputs from stringified json")
}
verified := snark.VerifyProof(setup.Vk, proof, publicInputs, false)
if err != nil {
println("error verifiyng proof", err)
}
verifiedJson, err := json.Marshal(verified)
if err != nil {
println("error marshal verified to json", err)
}
println("verifiedJson", string(verifiedJson))
return js.ValueOf(string(verifiedJson))
}
func grothGenerateProofs(this js.Value, i []js.Value) interface{} {
var circuitStr utils.CircuitString
err := json.Unmarshal([]byte(i[0].String()), &circuitStr)
if err != nil {
println(i[0].String())
println("error parsing circuit from stringified json")
}
circuit, err := utils.CircuitFromString(circuitStr)
if err != nil {
println("error " + err.Error())
}
sj, err := json.Marshal(circuit)
if err != nil {
println("error " + err.Error())
}
println("circuit", string(sj))
var setupStr utils.GrothSetupString
println(i[1].String())
err = json.Unmarshal([]byte(i[1].String()), &setupStr)
if err != nil {
println("error parsing setup from stringified json")
}
setup, err := utils.GrothSetupFromString(setupStr)
if err != nil {
println("error " + err.Error())
}
sj, err = json.Marshal(setup)
if err != nil {
println("error " + err.Error())
}
println("set", string(sj))
var pxStr []string
err = json.Unmarshal([]byte(i[2].String()), &pxStr)
if err != nil {
println("error parsing pxStr from stringified json")
}
px, err := utils.ArrayStringToBigInt(pxStr)
if err != nil {
println(err.Error())
}
sj, err = json.Marshal(px)
if err != nil {
println("error " + err.Error())
}
println("px", string(sj))
var inputs circuitcompiler.Inputs
err = json.Unmarshal([]byte(i[3].String()), &inputs)
if err != nil {
println("error parsing inputs from stringified json")
}
w, err := circuit.CalculateWitness(inputs.Private, inputs.Public)
proof, err := groth16.GenerateProofs(circuit, setup.Pk, w, px)
if err != nil {
println("error generating proof", err)
}
proofString := utils.GrothProofToString(proof)
proofJson, err := json.Marshal(proofString)
if err != nil {
println("error marshal proof to json", err)
}
println("proofJson", string(proofJson))
return js.ValueOf(string(proofJson))
}
func grothVerifyProofs(this js.Value, i []js.Value) interface{} {
var setupStr utils.GrothSetupString
println(i[0].String())
err := json.Unmarshal([]byte(i[0].String()), &setupStr)
if err != nil {
println("error parsing setup from stringified json")
}
setup, err := utils.GrothSetupFromString(setupStr)
if err != nil {
println("error " + err.Error())
}
var proofStr utils.GrothProofString
err = json.Unmarshal([]byte(i[1].String()), &proofStr)
if err != nil {
println(i[1].String())
println("error parsing proof from stringified json")
}
proof, err := utils.GrothProofFromString(proofStr)
if err != nil {
println("error " + err.Error())
}
var publicInputs []*big.Int
err = json.Unmarshal([]byte(i[2].String()), &publicInputs)
if err != nil {
println(i[2].String())
println("error parsing publicInputs from stringified json")
}
verified := groth16.VerifyProof(setup.Vk, proof, publicInputs, false)
if err != nil {
println("error verifiyng proof", err)
}
verifiedJson, err := json.Marshal(verified)
if err != nil {
println("error marshal verified to json", err)
}
println("verifiedJson", string(verifiedJson))
return js.ValueOf(string(verifiedJson))
}