Release v2.2.0

vendor/github.com/muun/libwallet/addresses/addresses.go

@@ -12,6 +12,7 @@ const (
 	V2              = 2
 	V3              = 3
 	V4              = 4
+	V5              = 5
 	SubmarineSwapV1 = 101
 	SubmarineSwapV2 = 102
 	IncomingSwap    = 201

vendor/github.com/muun/libwallet/addresses/v5.go

@@ -0,0 +1,50 @@
+package addresses
+
+import (
+	"fmt"
+
+	"github.com/btcsuite/btcd/chaincfg"
+	"github.com/btcsuite/btcutil/hdkeychain"
+	"github.com/muun/libwallet/btcsuitew/btcutilw"
+	"github.com/muun/libwallet/musig"
+)
+
+// CreateAddressV5 returns a P2TR WalletAddress using Musig with the signing and cosigning keys.
+func CreateAddressV5(userKey, muunKey *hdkeychain.ExtendedKey, path string, network *chaincfg.Params) (*WalletAddress, error) {
+	witnessProgram, err := CreateWitnessScriptV5(userKey, muunKey)
+	if err != nil {
+		return nil, fmt.Errorf("failed to generate witness script v5: %w", err)
+	}
+
+	address, err := btcutilw.NewAddressTaprootKey(witnessProgram, network)
+	if err != nil {
+		return nil, err
+	}
+
+	return &WalletAddress{
+		address:        address.EncodeAddress(),
+		version:        V5,
+		derivationPath: path,
+	}, nil
+}
+
+func CreateWitnessScriptV5(userKey, muunKey *hdkeychain.ExtendedKey) ([]byte, error) {
+	userPublicKey, err := userKey.ECPubKey()
+	if err != nil {
+		return nil, err
+	}
+
+	muunPublicKey, err := muunKey.ECPubKey()
+	if err != nil {
+		return nil, err
+	}
+
+	combined, err := musig.CombinePubKeysWithTweak(userPublicKey, muunPublicKey, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	xOnlyCombined := combined.SerializeCompressed()[1:]
+
+	return xOnlyCombined, nil
+}