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multi: obtain+verify aux sigs for all second level HTLCs

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In this commit, we start to use the new AuxSigner to obtain+verify aux sigs for all second level HTLCs. This is similar to the existing SigPool, but we'll only attempt to do this if the AuxSigner is present (won't be for most channels).
This commit is contained in:
Olaoluwa Osuntokun
2024-04-08 19:48:36 -07:00
committed by Oliver Gugger
parent bd84fd256e
commit 83fdbda2fa
20 changed files with 597 additions and 53 deletions
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5
contractcourt/breach_arbitrator_test.go
View File

@@ -2360,9 +2360,12 @@ func createInitChannels(t *testing.T) (
)
bobSigner := input.NewMockSigner([]*btcec.PrivateKey{bobKeyPriv}, nil)
signerMock := lnwallet.NewDefaultAuxSignerMock(t)
alicePool := lnwallet.NewSigPool(1, aliceSigner)
channelAlice, err := lnwallet.NewLightningChannel(
aliceSigner, aliceChannelState, alicePool,
lnwallet.WithLeafStore(&lnwallet.MockAuxLeafStore{}),
lnwallet.WithAuxSigner(signerMock),
)
if err != nil {
return nil, nil, err
@@ -2375,6 +2378,8 @@ func createInitChannels(t *testing.T) (
bobPool := lnwallet.NewSigPool(1, bobSigner)
channelBob, err := lnwallet.NewLightningChannel(
bobSigner, bobChannelState, bobPool,
lnwallet.WithLeafStore(&lnwallet.MockAuxLeafStore{}),
lnwallet.WithAuxSigner(signerMock),
)
if err != nil {
return nil, nil, err

10
contractcourt/chain_arbitrator.go
View File

@@ -221,6 +221,10 @@ type ChainArbitratorConfig struct {
// AuxLeafStore is an optional store that can be used to store auxiliary
// leaves for certain custom channel types.
AuxLeafStore fn.Option[lnwallet.AuxLeafStore]
// AuxSigner is an optional signer that can be used to sign auxiliary
// leaves for certain custom channel types.
AuxSigner fn.Option[lnwallet.AuxSigner]
}
// ChainArbitrator is a sub-system that oversees the on-chain resolution of all
@@ -307,6 +311,9 @@ func (a *arbChannel) NewAnchorResolutions() (*lnwallet.AnchorResolutions,
a.c.cfg.AuxLeafStore.WhenSome(func(s lnwallet.AuxLeafStore) {
chanOpts = append(chanOpts, lnwallet.WithLeafStore(s))
})
a.c.cfg.AuxSigner.WhenSome(func(s lnwallet.AuxSigner) {
chanOpts = append(chanOpts, lnwallet.WithAuxSigner(s))
})
chanMachine, err := lnwallet.NewLightningChannel(
a.c.cfg.Signer, channel, nil, chanOpts...,
@@ -357,6 +364,9 @@ func (a *arbChannel) ForceCloseChan() (*lnwallet.LocalForceCloseSummary, error)
a.c.cfg.AuxLeafStore.WhenSome(func(s lnwallet.AuxLeafStore) {
chanOpts = append(chanOpts, lnwallet.WithLeafStore(s))
})
a.c.cfg.AuxSigner.WhenSome(func(s lnwallet.AuxSigner) {
chanOpts = append(chanOpts, lnwallet.WithAuxSigner(s))
})
// Finally, we'll force close the channel completing
// the force close workflow.