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loop: use MuSig2 1.0 scheme for the new MuSig2 swaps

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This commit is contained in:
Andras Banki-Horvath 2023-01-09 19:01:07 +01:00
parent b47f67a6de
commit cd91f90ed2
No known key found for this signature in database
GPG key ID: 80E5375C094198D8
4 changed files with 41 additions and 66 deletions
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31
loopout.go
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@ -1355,12 +1355,28 @@ func (s *loopOutSwap) createMuSig2SweepTxn(
return nil, err
}
signers := [][]byte{
s.HtlcKeys.SenderInternalPubKey[1:],
s.HtlcKeys.ReceiverInternalPubKey[1:],
var (
signers [][]byte
muSig2Verion input.MuSig2Version
)
// Depending on the MuSig2 version we either pass 32 byte Schnorr
// public keys or normal 33 byte public keys.
if s.ProtocolVersion >= loopdb.ProtocolVersionMuSig2 {
muSig2Verion = input.MuSig2Version100RC2
signers = [][]byte{
s.HtlcKeys.SenderInternalPubKey[:],
s.HtlcKeys.ReceiverInternalPubKey[:],
}
} else {
muSig2Verion = input.MuSig2Version040
signers = [][]byte{
s.HtlcKeys.SenderInternalPubKey[1:],
s.HtlcKeys.ReceiverInternalPubKey[1:],
}
}
htlc, ok := s.htlc.HtlcScript.(*swap.HtlcScriptV3)
htlcScript, ok := s.htlc.HtlcScript.(*swap.HtlcScriptV3)
if !ok {
return nil, fmt.Errorf("non taproot htlc")
}
@ -1368,9 +1384,8 @@ func (s *loopOutSwap) createMuSig2SweepTxn(
// Now we're creating a local MuSig2 session using the receiver key's
// key locator and the htlc's root hash.
musig2SessionInfo, err := s.lnd.Signer.MuSig2CreateSession(
ctx, input.MuSig2Version040,
&s.HtlcKeys.ClientScriptKeyLocator, signers,
lndclient.MuSig2TaprootTweakOpt(htlc.RootHash[:], false),
ctx, muSig2Verion, &s.HtlcKeys.ClientScriptKeyLocator, signers,
lndclient.MuSig2TaprootTweakOpt(htlcScript.RootHash[:], false),
)
if err != nil {
return nil, err
@ -1434,7 +1449,7 @@ func (s *loopOutSwap) createMuSig2SweepTxn(
// To be sure that we're good, parse and validate that the combined
// signature is indeed valid for the sig hash and the internal pubkey.
err = s.executeConfig.verifySchnorrSig(
htlc.TaprootKey, sigHash, finalSig,
htlcScript.TaprootKey, sigHash, finalSig,
)
if err != nil {
return nil, err