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lnwallet: introduce the MessageSigner interface

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This commit introduces the MessageSigner interface which is an abstract
object capable of signing arbitrary messages with a target public key.
This interface will be used within the daemon for: signing channel
authentication proofs, signing node/channel announcements, and also to
possibly sign arbitrary messages in the future.
This commit is contained in:
Olaoluwa Osuntokun 2017-04-14 10:59:13 -07:00
parent 07437f6ec4
commit b226edf96e
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GPG Key ID: 9CC5B105D03521A2
1 changed files with 12 additions and 0 deletions
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lnwallet/interface.go
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@ -287,6 +287,18 @@ type Signer interface {
ComputeInputScript(tx *wire.MsgTx, signDesc *SignDescriptor) (*InputScript, error) ComputeInputScript(tx *wire.MsgTx, signDesc *SignDescriptor) (*InputScript, error)
} }
// MessageSigner represents an abstract object capable of signing arbitrary
// messages. The capabilities of this interface are used to sign announcements
// to the network, or just arbitrary messages that leverage the wallet's keys
// to attest to some message.
type MessageSigner interface {
// SignMessage attempts to sign a target message with the private key
// that corresponds to the passed public key. If the target private key
// is unable to be found, then an error will be returned. The actual
// digest signed is the double SHA-256 of the passed message.
SignMessage(pubKey *btcec.PublicKey, msg []byte) (*btcec.Signature, error)
}
// WalletDriver represents a "driver" for a particular concrete // WalletDriver represents a "driver" for a particular concrete
// WalletController implementation. A driver is identified by a globally unique // WalletController implementation. A driver is identified by a globally unique
// string identifier along with a 'New()' method which is responsible for // string identifier along with a 'New()' method which is responsible for