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lnwallet/btcwallet: remove FundingSigner, implement MessageSigner

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This commit removes the now deprecated FundingSigner struct as part of
the btcwallet package, and instead replaces it within an implementation
of the MessageSigner interface.
This commit is contained in:
Olaoluwa Osuntokun 2017-04-14 11:05:18 -07:00
parent 98c58ddb67
commit 4e988b228e
No known key found for this signature in database
GPG Key ID: 9CC5B105D03521A2
1 changed files with 15 additions and 22 deletions
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37
lnwallet/btcwallet/signer.go
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@ -206,39 +206,32 @@ func (b *BtcWallet) ComputeInputScript(tx *wire.MsgTx,
// interface.
var _ lnwallet.Signer = (*BtcWallet)(nil)
// FundingSigner responsible for signing the data with the keys that were
// generated by the wallet. At the moment of creation it is used for signing
// the data with funding keys.
type FundingSigner struct {
wallet *BtcWallet
}
// NewFundingSigner creates new instance of signer.
func NewFundingSigner(wallet *BtcWallet) *FundingSigner {
return &FundingSigner{
wallet: wallet,
}
}
// SignData sign given data with the private key which corresponds to the given
// public key.
// 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.
//
// NOTE: This is a part of the DataSigner interface.
func (s *FundingSigner) SignData(data []byte,
pubKey *btcec.PublicKey) (*btcec.Signature, error) {
// NOTE: This is a part of the MessageSigner interface.
func (b *BtcWallet) SignMessage(pubKey *btcec.PublicKey,
msg []byte) (*btcec.Signature, error) {
// First attempt to fetch the private key which corresponds to the
// specified public key.
privKey, err := s.wallet.fetchPrivKey(pubKey)
privKey, err := b.fetchPrivKey(pubKey)
if err != nil {
return nil, err
}
// Double hash and sign data.
sign, err := privKey.Sign(chainhash.DoubleHashB(data))
// Double hash and sign the data.
msgDigest := chainhash.DoubleHashB(msg)
sign, err := privKey.Sign(msgDigest)
if err != nil {
return nil, errors.Errorf("unable sign the message: %v", err)
}
return sign, nil
}
// A compile time check to ensure that BtcWallet implements the MessageSigner
// interface.
var _ lnwallet.MessageSigner = (*BtcWallet)(nil)