https://github.com/noot/ring-go

💍implementation of linkable ring signatures in go
https://github.com/noot/ring-go

cryptography proof-of-membership ring-signatures zk

Last synced: about 1 hour ago
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💍implementation of linkable ring signatures in go

• Host: GitHub
• URL: https://github.com/noot/ring-go
• Owner: noot
• License: lgpl-3.0
• Created: 2018-07-07T22:05:13.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2024-07-15T22:13:37.000Z (4 months ago)
• Last Synced: 2024-11-07T18:54:41.440Z (8 days ago)
• Topics: cryptography, proof-of-membership, ring-signatures, zk
• Language: Go
• Homepage:
• Size: 8.5 MB
• Stars: 53
• Watchers: 6
• Forks: 11
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# ring-go

Implementation of linkable ring signatures using elliptic curve crypto in pure Go. It supports ring signatures over both ed25519 and secp256k1.

### requirements

go 1.19

### get

`go get github.com/noot/ring-go`

### references

This implementation is based off of [Ring Confidential Transactions](https://eprint.iacr.org/2015/1098.pdf), in particular section 2, which defines MLSAG (Multilayered Linkable Spontaneous Anonymous Group signatures).

### usage

See `examples/main.go`.

```go

package main

import (

	"fmt"

	ring "github.com/noot/ring-go"

	"golang.org/x/crypto/sha3"

)

func signAndVerify(curve ring.Curve) {

	privkey := curve.NewRandomScalar()

	msgHash := sha3.Sum256([]byte("helloworld"))

	// size of the public key ring (anonymity set)

	const size = 16

	// our key's secret index within the set

	const idx = 7

	

	keyring, err := ring.NewKeyRing(curve, size, privkey, idx)

	if err != nil {

		panic(err)

	}

	sig, err := keyring.Sign(msgHash, privkey)

	if err != nil {

		panic(err)

	}

	ok := sig.Verify(msgHash)

	if !ok {

		fmt.Println("failed to verify :(")

		return

	}

	fmt.Println("verified signature!")

}

func main() {

	fmt.Println("using secp256k1...")

	signAndVerify(ring.Secp256k1())

	fmt.Println("using ed25519...")

	signAndVerify(ring.Ed25519())

}

```