Release v0.3.0

vendor/github.com/muun/libwallet/addresses/v2.go

@@ -0,0 +1,57 @@
+package addresses
+
+import (
+	"github.com/btcsuite/btcd/chaincfg"
+	"github.com/btcsuite/btcd/txscript"
+	"github.com/btcsuite/btcutil"
+	"github.com/btcsuite/btcutil/hdkeychain"
+	"github.com/pkg/errors"
+)
+
+func CreateAddressV2(userKey, muunKey *hdkeychain.ExtendedKey, path string, network *chaincfg.Params) (*WalletAddress, error) {
+
+	script, err := CreateRedeemScriptV2(userKey, muunKey, network)
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to generate redeem script v2")
+	}
+
+	address, err := btcutil.NewAddressScriptHash(script, network)
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to generate multisig address")
+	}
+
+	return &WalletAddress{
+		address:        address.EncodeAddress(),
+		version:        V2,
+		derivationPath: path,
+	}, nil
+}
+
+func CreateRedeemScriptV2(userKey, muunKey *hdkeychain.ExtendedKey, network *chaincfg.Params) ([]byte, error) {
+	return createMultisigRedeemScript(userKey, muunKey, network)
+}
+
+func createMultisigRedeemScript(userKey, muunKey *hdkeychain.ExtendedKey, network *chaincfg.Params) ([]byte, error) {
+	userPublicKey, err := userKey.ECPubKey()
+	if err != nil {
+		return nil, err
+	}
+	userAddress, err := btcutil.NewAddressPubKey(userPublicKey.SerializeCompressed(), network)
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to generate address for user")
+	}
+
+	muunPublicKey, err := muunKey.ECPubKey()
+	if err != nil {
+		return nil, err
+	}
+	WalletAddress, err := btcutil.NewAddressPubKey(muunPublicKey.SerializeCompressed(), network)
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to generate address for muun")
+	}
+
+	return txscript.MultiSigScript([]*btcutil.AddressPubKey{
+		userAddress,
+		WalletAddress,
+	}, 2)
+}