Release v0.3.0

vendor/github.com/muun/libwallet/addresses/v4.go

@@ -0,0 +1,36 @@
+package addresses
+
+import (
+	"crypto/sha256"
+
+	"github.com/btcsuite/btcd/chaincfg"
+	"github.com/btcsuite/btcutil"
+	"github.com/btcsuite/btcutil/hdkeychain"
+	"github.com/pkg/errors"
+)
+
+// CreateAddressV4 returns a P2WSH WalletAddress from a user HD-pubkey and a Muun co-signing HD-pubkey.
+func CreateAddressV4(userKey, muunKey *hdkeychain.ExtendedKey, path string, network *chaincfg.Params) (*WalletAddress, error) {
+
+	witnessScript, err := CreateWitnessScriptV4(userKey, muunKey, network)
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to generate witness script v4")
+	}
+	witnessScript256 := sha256.Sum256(witnessScript)
+
+	address, err := btcutil.NewAddressWitnessScriptHash(witnessScript256[:], network)
+	if err != nil {
+		return nil, err
+	}
+
+	return &WalletAddress{
+		address:        address.EncodeAddress(),
+		version:        V4,
+		derivationPath: path,
+	}, nil
+}
+
+func CreateWitnessScriptV4(userKey, muunKey *hdkeychain.ExtendedKey, network *chaincfg.Params) ([]byte, error) {
+	// createMultisigRedeemScript creates a valid script for V2, V3 and V4 schemes
+	return createMultisigRedeemScript(userKey, muunKey, network)
+}