package netann import ( "fmt" "github.com/btcsuite/btcd/btcec" "github.com/lightningnetwork/lnd/lnwallet" "github.com/lightningnetwork/lnd/lnwire" ) // SignAnnouncement signs any type of gossip message that is announced on the // network. func SignAnnouncement(signer lnwallet.MessageSigner, pubKey *btcec.PublicKey, msg lnwire.Message) (*btcec.Signature, error) { var ( data []byte err error ) switch m := msg.(type) { case *lnwire.ChannelAnnouncement: data, err = m.DataToSign() case *lnwire.ChannelUpdate: data, err = m.DataToSign() case *lnwire.NodeAnnouncement: data, err = m.DataToSign() default: return nil, fmt.Errorf("can't sign %T message", m) } if err != nil { return nil, fmt.Errorf("unable to get data to sign: %v", err) } return signer.SignMessage(pubKey, data) }