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psbt: export WriteTxWitness

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This commit is contained in:
Oliver Gugger 2020-06-19 12:52:16 +02:00
parent b2bf7f89d6
commit 8ec8bad266
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GPG key ID: 8E4256593F177720
1 changed files with 4 additions and 4 deletions
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8
psbt/utils.go
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@ -15,10 +15,10 @@ import (
"github.com/btcsuite/btcd/wire" "github.com/btcsuite/btcd/wire"
) )
// writeTxWitness is a A utility function due to non-exported witness // WriteTxWitness is a utility function due to non-exported witness
// serialization (writeTxWitness encodes the bitcoin protocol encoding for a // serialization (writeTxWitness encodes the bitcoin protocol encoding for a
// transaction input's witness into w). // transaction input's witness into w).
func writeTxWitness(w io.Writer, wit [][]byte) error { func WriteTxWitness(w io.Writer, wit [][]byte) error {
if err := wire.WriteVarInt(w, 0, uint64(len(wit))); err != nil { if err := wire.WriteVarInt(w, 0, uint64(len(wit))); err != nil {
return err return err
} }
@ -39,7 +39,7 @@ func writePKHWitness(sig []byte, pub []byte) ([]byte, error) {
witnessItems = [][]byte{sig, pub} witnessItems = [][]byte{sig, pub}
) )
if err := writeTxWitness(&buf, witnessItems); err != nil { if err := WriteTxWitness(&buf, witnessItems); err != nil {
return nil, err return nil, err
} }
@ -173,7 +173,7 @@ func getMultisigScriptWitness(witnessScript []byte, pubKeys [][]byte,
// Now that we have the full witness stack, we'll serialize it in the // Now that we have the full witness stack, we'll serialize it in the
// expected format, and return the final bytes. // expected format, and return the final bytes.
var buf bytes.Buffer var buf bytes.Buffer
if err = writeTxWitness(&buf, witnessElements); err != nil { if err = WriteTxWitness(&buf, witnessElements); err != nil {
return nil, err return nil, err
} }
return buf.Bytes(), nil return buf.Bytes(), nil