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input: add tapscript root hash helper function

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This commit is contained in:
Oliver Gugger 2022-07-29 18:20:06 +02:00
parent 0d6e791042
commit 9f47d31681
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1 changed files with 21 additions and 0 deletions
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21
input/taproot.go
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@ -105,3 +105,24 @@ func TapscriptPartialReveal(internalKey *btcec.PublicKey,
RevealedScript: revealedLeaf.Script,
}
}
// TapscriptRootHashOnly creates a waddrmgr.Tapscript for the given internal key
// and root hash.
func TapscriptRootHashOnly(internalKey *btcec.PublicKey,
rootHash []byte) *waddrmgr.Tapscript {
controlBlock := &txscript.ControlBlock{
InternalKey: internalKey,
}
tapKey := txscript.ComputeTaprootOutputKey(internalKey, rootHash)
if tapKey.SerializeCompressed()[0] == PubKeyFormatCompressedOdd {
controlBlock.OutputKeyYIsOdd = true
}
return &waddrmgr.Tapscript{
Type: waddrmgr.TaprootKeySpendRootHash,
ControlBlock: controlBlock,
RootHash: rootHash,
}
}