https://github.com/iden3/go-circom-witnesscalc

Witness Calculator in go, calling WASM
https://github.com/iden3/go-circom-witnesscalc

Last synced: 3 months ago
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Witness Calculator in go, calling WASM

• Host: GitHub
• URL: https://github.com/iden3/go-circom-witnesscalc
• Owner: iden3
• License: gpl-3.0
• Created: 2020-04-02T10:51:56.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2023-03-14T15:58:15.000Z (over 1 year ago)
• Last Synced: 2024-07-16T07:39:35.426Z (4 months ago)
• Language: Go
• Size: 869 KB
• Stars: 8
• Watchers: 7
• Forks: 3
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-circom - go-circom-witnesscalc - Witness Calculator in go, calling WASM (Provers / Cryptographic primitives in other languages)

README

        
# go-circom-witnesscalc

[![GoDoc](https://godoc.org/github.com/iden3/go-witnesscalc?status.svg)](https://godoc.org/github.com/iden3/go-witnesscalc)

Witness Calculator in go, calling WASM generated from circom.

## Example

```go

package main

import (

	"encoding/json"

	"io/ioutil"

	wasm3 "github.com/iden3/go-wasm3"

	"github.com/stretchr/testify/assert"

)

func Test(t *testing.T) {

	wasmFilename :=   "test_files/mycircuit.wasm"

	inputsFilename := "test_files/mycircuit-input2.json"

	runtime := wasm3.NewRuntime(&wasm3.Config{

		Environment: wasm3.NewEnvironment(),

		StackSize:   64 * 1024,

	})

        defer runtime.Destroy()

	wasmBytes, err := ioutil.ReadFile(wasmFilename)

	require.Nil(t, err)

	module, err := runtime.ParseModule(wasmBytes)

	require.Nil(t, err)

	module, err = runtime.LoadModule(module)

	require.Nil(t, err)

	inputsBytes, err := ioutil.ReadFile(inputsFilename)

	require.Nil(t, err)

	inputs, err := ParseInputs(inputsBytes)

	require.Nil(t, err)

	witnessCalculator, err := NewWitnessCalculator(runtime, module)

	require.Nil(t, err)

	w, err := witnessCalculator.CalculateWitness(inputs, false)

	require.Nil(t, err)

	wJSON, err := json.Marshal(WitnessJSON(w))

	require.Nil(t, err)

        fmt.Print(string(wJSON))

}

```

# License

GPLv3