memnix / memnix-rest

import (

	"crypto/rand"

	"io"

	"sync"

	"github.com/pkg/errors"

	"golang.org/x/crypto/ed25519"

)

type KeyManager struct {

	seed       io.Reader

	privateKey ed25519.PrivateKey

	publicKey  ed25519.PublicKey

}

var (

	keyManagerInstance *KeyManager //nolint:gochecknoglobals //Singleton

	keyManagerOnce     sync.Once   //nolint:gochecknoglobals //Singleton

)

func GetKeyManagerInstance() *KeyManager {

	keyManagerOnce.Do(func() {

		keyManagerInstance = &KeyManager{

			seed: rand.Reader,

		}

	})

	return keyManagerInstance

}

func (k *KeyManager) GetPublicKey() ed25519.PublicKey {

	return k.publicKey

}

func (k *KeyManager) ParseEd25519Key() error {

	publicKey, privateKey, err := GenerateKeyPair()

	if err != nil {

		return err

	}

	k.privateKey = privateKey

	k.publicKey = publicKey

	return nil

}

func GenerateKeyPair() (ed25519.PublicKey, ed25519.PrivateKey, error) {

	publicKey, privateKey, err := ed25519.GenerateKey(GetKeyManagerInstance().seed)

	if err != nil {

		return nil, nil, errors.Wrap(err, "Error generating keys")

	}

	return publicKey, privateKey, nil

}