multi: fix inclusion proof size

The inclusion proof field in the TapscriptPartialReveal function was
incorrect. An inclusion proof can be zero or more elements of 32-byte
slices. So an empty inclusion proof can be valid too for a tree that
only consists of a single leaf.
This commit is contained in:
Oliver Gugger
2022-04-27 22:20:35 +02:00
parent f7275c7fc4
commit e31aab5af6
3 changed files with 6 additions and 4 deletions

View File

@@ -75,12 +75,12 @@ func TapscriptFullTree(internalKey *btcec.PublicKey,
// key and revealed script.
func TapscriptPartialReveal(internalKey *btcec.PublicKey,
revealedLeaf txscript.TapLeaf,
inclusionProof [32]byte) *waddrmgr.Tapscript {
inclusionProof []byte) *waddrmgr.Tapscript {
controlBlock := &txscript.ControlBlock{
InternalKey: internalKey,
LeafVersion: txscript.BaseLeafVersion,
InclusionProof: inclusionProof[:],
InclusionProof: inclusionProof,
}
rootHash := controlBlock.RootHash(revealedLeaf.Script)
tapKey := txscript.ComputeTaprootOutputKey(internalKey, rootHash)