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https://github.com/iden3/go-circom-prover-verifier
Go implementation of the Groth16 zkSNARK Prover and Verifier compatible with Circom
https://github.com/iden3/go-circom-prover-verifier
Last synced: 4 months ago
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Go implementation of the Groth16 zkSNARK Prover and Verifier compatible with Circom
- Host: GitHub
- URL: https://github.com/iden3/go-circom-prover-verifier
- Owner: iden3
- License: gpl-3.0
- Created: 2020-04-02T14:37:10.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2022-04-14T16:11:32.000Z (about 2 years ago)
- Last Synced: 2024-03-20T02:05:01.902Z (4 months ago)
- Language: Go
- Homepage:
- Size: 4.29 MB
- Stars: 37
- Watchers: 10
- Forks: 14
- Open Issues: 8
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Lists
- awesome-circom - go-circom-prover-verifier - Go implementation of the Groth16 zkSNARK Prover and Verifier compatible with Circom (Provers / Cryptographic primitives in other languages)
README
# go-circom-prover-verifier [](https://godoc.org/github.com/iden3/go-circom-prover-verifier) [](https://goreportcard.com/report/github.com/iden3/go-circom-prover-verifier) [](https://github.com/iden3/go-circom-prover-verifier/actions?query=workflow%3ATest)
Go implementation of the [Groth16 protocol](https://eprint.iacr.org/2016/260.pdf) zkSNARK prover & verifier compatible with [circom](https://github.com/iden3/circom).
Using [bn256](https://github.com/ethereum/go-ethereum/tree/master/crypto/bn256/cloudflare) (used by [go-ethereum](https://github.com/ethereum/go-ethereum)) for the Pairing curve operations.
### Example
- Generate Proof
```go
import (
"github.com/iden3/go-circom-prover-verifier/parsers"
"github.com/iden3/go-circom-prover-verifier/prover"
"github.com/iden3/go-circom-prover-verifier/verifier"
)
[...]
// read ProvingKey & Witness files
provingKeyJson, _ := ioutil.ReadFile("../testdata/small/proving_key.json")
witnessJson, _ := ioutil.ReadFile("../testdata/small/witness.json")
// parse Proving Key
pk, _ := parsers.ParsePk(provingKeyJson)
// parse Witness
w, _ := parsers.ParseWitness(witnessJson)
// generate the proof
proof, pubSignals, _ := prover.GenerateProof(pk, w)
// print proof & publicSignals
proofStr, _ := parsers.ProofToJson(proof)
publicStr, _ := json.Marshal(parsers.ArrayBigIntToString(pubSignals))
fmt.Println(proofStr)
fmt.Println(publicStr)
```
- Verify Proof
```go
// read proof & verificationKey & publicSignals
proofJson, _ := ioutil.ReadFile("../testdata/big/proof.json")
vkJson, _ := ioutil.ReadFile("../testdata/big/verification_key.json")
publicJson, _ := ioutil.ReadFile("../testdata/big/public.json")
// parse proof & verificationKey & publicSignals
public, _ := parsers.ParsePublicSignals(publicJson)
proof, _ := parsers.ParseProof(proofJson)
vk, _ := parsers.ParseVk(vkJson)
// verify the proof with the given verificationKey & publicSignals
v := verifier.Verify(vk, proof, public)
fmt.Println(v)
```
## CLI
From the `cli` directory:
- Show options
```
> go run cli.go -help
go-circom-prover-verifier
v0.0.1
Usage of /tmp/go-build620318239/b001/exe/cli:
-proof string
proof path (default "proof.json")
-prove
prover mode
-provingkey string
provingKey path (default "proving_key.json")
-public string
public signals path (default "public.json")
-verificationkey string
verificationKey path (default "verification_key.json")
-verify
verifier mode
-witness string
witness path (default "witness.json")
```
- Prove
```
> go run cli.go -prove -provingkey=../testdata/circuit5k/proving_key.json -witness=../testdata/circuit5k/witness.json
```
- Verify
```
> go run cli.go -verify -verificationkey=../testdata/circuit5k/verification_key.json
```