nodesigner: remove file, now in netann pkg

nodesigner.go

@@ -1,82 +0,0 @@
-package main
-
-import (
-	"fmt"
-
-	"github.com/btcsuite/btcd/btcec"
-	"github.com/btcsuite/btcd/chaincfg/chainhash"
-	"github.com/lightningnetwork/lnd/lnwallet"
-)
-
-// nodeSigner is an implementation of the MessageSigner interface backed by the
-// identity private key of running lnd node.
-type nodeSigner struct {
-	privKey *btcec.PrivateKey
-}
-
-// newNodeSigner creates a new instance of the nodeSigner backed by the target
-// private key.
-func newNodeSigner(key *btcec.PrivateKey) *nodeSigner {
-	priv := &btcec.PrivateKey{}
-	priv.Curve = btcec.S256()
-	priv.PublicKey.X = key.X
-	priv.PublicKey.Y = key.Y
-	priv.D = key.D
-	return &nodeSigner{
-		privKey: priv,
-	}
-}
-
-// SignMessage signs a double-sha256 digest of the passed msg under the
-// resident node's private key. If the target public key is _not_ the node's
-// private key, then an error will be returned.
-func (n *nodeSigner) SignMessage(pubKey *btcec.PublicKey,
-	msg []byte) (*btcec.Signature, error) {
-
-	// If this isn't our identity public key, then we'll exit early with an
-	// error as we can't sign with this key.
-	if !pubKey.IsEqual(n.privKey.PubKey()) {
-		return nil, fmt.Errorf("unknown public key")
-	}
-
-	// Otherwise, we'll sign the dsha256 of the target message.
-	digest := chainhash.DoubleHashB(msg)
-	sign, err := n.privKey.Sign(digest)
-	if err != nil {
-		return nil, fmt.Errorf("can't sign the message: %v", err)
-	}
-
-	return sign, nil
-}
-
-// SignCompact signs a double-sha256 digest of the msg parameter under the
-// resident node's private key. The returned signature is a pubkey-recoverable
-// signature.
-func (n *nodeSigner) SignCompact(msg []byte) ([]byte, error) {
-	// We'll sign the dsha256 of the target message.
-	digest := chainhash.DoubleHashB(msg)
-
-	return n.SignDigestCompact(digest)
-}
-
-// SignDigestCompact signs the provided message digest under the resident
-// node's private key. The returned signature is a pubkey-recoverable signature.
-func (n *nodeSigner) SignDigestCompact(hash []byte) ([]byte, error) {
-
-	// Should the signature reference a compressed public key or not.
-	isCompressedKey := true
-
-	// btcec.SignCompact returns a pubkey-recoverable signature
-	sig, err := btcec.SignCompact(
-		btcec.S256(), n.privKey, hash, isCompressedKey,
-	)
-	if err != nil {
-		return nil, fmt.Errorf("can't sign the hash: %v", err)
-	}
-
-	return sig, nil
-}
-
-// A compile time check to ensure that nodeSigner implements the MessageSigner
-// interface.
-var _ lnwallet.MessageSigner = (*nodeSigner)(nil)