mirror of
https://github.com/muun/recovery.git
synced 2025-02-23 03:22:31 -05:00
74 lines
2.1 KiB
Go
74 lines
2.1 KiB
Go
package libwallet
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import (
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"github.com/btcsuite/btcd/txscript"
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"github.com/btcsuite/btcd/wire"
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"github.com/btcsuite/btcutil"
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"github.com/pkg/errors"
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)
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// CreateAddressV1 returns a P2PKH MuunAddress from a publicKey for using in TransactionSchameV1
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func CreateAddressV1(publicKey *HDPublicKey) (MuunAddress, error) {
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pubkey, err := btcutil.NewAddressPubKey(publicKey.Raw(), publicKey.Network.network)
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if err != nil {
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return nil, err
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}
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pubkeyHash := pubkey.AddressPubKeyHash()
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address := pubkeyHash.String()
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return &muunAddress{address: address, version: addressV1, derivationPath: publicKey.Path}, nil
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}
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func addUserSignatureInputV1(input Input, index int, tx *wire.MsgTx, privateKey *HDPrivateKey) (*wire.TxIn, error) {
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txInput := tx.TxIn[index]
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sig, err := signInputV1(input, index, tx, privateKey)
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if err != nil {
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return nil, errors.Wrapf(err, "failed to sign V1 input")
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}
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builder := txscript.NewScriptBuilder()
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builder.AddData(sig)
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builder.AddData(privateKey.PublicKey().Raw())
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script, err := builder.Script()
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if err != nil {
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return nil, errors.Wrapf(err, "failed to generate signing script")
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}
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txInput.SignatureScript = script
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return txInput, nil
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}
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func createRedeemScriptV1(publicKey *HDPublicKey) ([]byte, error) {
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userAddress, err := btcutil.NewAddressPubKey(publicKey.Raw(), publicKey.Network.network)
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if err != nil {
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return nil, errors.Wrapf(err, "failed to generate address for user")
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}
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return txscript.PayToAddrScript(userAddress.AddressPubKeyHash())
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}
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func signInputV1(input Input, index int, tx *wire.MsgTx, privateKey *HDPrivateKey) ([]byte, error) {
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redeemScript, err := createRedeemScriptV1(privateKey.PublicKey())
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if err != nil {
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return nil, errors.Wrapf(err, "failed to build reedem script for signing")
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}
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privKey, err := privateKey.key.ECPrivKey()
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if err != nil {
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return nil, errors.Wrapf(err, "failed to produce EC priv key for signing")
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}
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sig, err := txscript.RawTxInSignature(tx, index, redeemScript, txscript.SigHashAll, privKey)
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if err != nil {
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return nil, errors.Wrapf(err, "failed to sign V1 input")
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}
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return sig, nil
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}
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