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6d97bcbacd
In this commit, we consolidate the number of areas where we derive our commitment keys. Before this commit, the `isOurCommitment` function in the chain watcher used a custom routine to derive the expected scripts/keys for our commitment at that height. With the recent changes, we now have additional logic in `DeriveCommitmentKeys` that wasn't copied over to this area. As a result, the prior logic would erroneously detect if it was our commitment that had hit the chain or not. In this commit, we remove the old custom code, and use `DeriveCommitmentKeys` wihtin the chain watcher as well. This ensures that we only need to maintain the key derivation code in a single place, preventing future bugs of this nature.
lnwallet
The lnwallet package implements an abstracted wallet controller that is able to drive channel funding workflows, a number of script utilities, witness generation functions for the various Lightning scripts, revocation key derivation, and the commitment update state machine.
The package is used within lnd as the core wallet of the daemon. The wallet
itself is composed of several distinct interfaces that decouple the
implementation of things like signing and blockchain access. This separation
allows new WalletController implementations to be easily dropped into
lnd without disrupting the code base. A series of integration tests at the
interface level are also in place to ensure conformance of the implementation
with the interface.
Installation and Updating
$ go get -u github.com/lightningnetwork/lnd/lnwallet