How is it possible to preserve .onion address about go-libtor HOT 2 CLOSED

While generating onion url you have to provide the private key. If you preserve the onion address by supplying same key.

Here _key is your key in string format.
key, err := ParseRsaPrivateKeyFromPemStr(_key)
onion, err = t.Listen(ctx, &tor.ListenConf{RemotePorts: []int{80}, LocalPort: goServerPort, Key: key})

For generating private key and storing it as string for later reference.

func GenerateKey() string {
key, err := rsa.GenerateKey(rand.Reader, 1024)
if err != nil {
return err.Error()
}
return ExportRsaPrivateKeyAsPemStr(key)
}

func ExportRsaPrivateKeyAsPemStr(privkey *rsa.PrivateKey) string {
privkey_bytes := x509.MarshalPKCS1PrivateKey(privkey)
privkey_pem := pem.EncodeToMemory(
&pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: privkey_bytes,
},
)
return string(privkey_pem)
}

func ParseRsaPrivateKeyFromPemStr(privPEM string) (*rsa.PrivateKey, error) {
block, _ := pem.Decode([]byte(privPEM))
if block == nil {
return nil, errors.New("failed to parse PEM block containing the key")
}
priv, err := x509.ParsePKCS1PrivateKey(block.Bytes)
if err != nil {
return nil, err
}
return priv, nil
}

from go-libtor.

after trying to write a tor V3 address to the _key variable, i was having some issues
_key = "== ed25519v1-secret: "....
it returns: "panic: runtime error: invalid memory address or nil pointer dereference"
then it segfaults.
is there a similar function to ParseRsaPrivateKeyFromPemStr but for V3 addresses? i couldn't find anything in the documentation

from go-libtor.