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multi: refactor SignDigestCompact into SignMessageCompact

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To make it possible to use a remote lnrpc server as a signer for our
wallet, we need to change our main interface to sign the message instead
of the message's digest. Otherwise we'd need to alter the
lnrpc.SignMessage RPC to accept a digest instead of only the message
which has security implications.
This commit is contained in:
Oliver Gugger
2021-09-23 16:54:27 +02:00
parent 02757f6735
commit 8b7c88537c
17 changed files with 2407 additions and 2373 deletions
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14
lntest/mock/secretkeyring.go
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@@ -54,9 +54,15 @@ func (s *SecretKeyRing) SignMessage(_ keychain.KeyDescriptor,
return s.RootKey.Sign(digest)
}
// SignDigestCompact signs the passed digest.
func (s *SecretKeyRing) SignDigestCompact(_ keychain.KeyDescriptor,
digest [32]byte) ([]byte, error) {
// SignMessageCompact signs the passed message.
func (s *SecretKeyRing) SignMessageCompact(_ keychain.KeyDescriptor,
msg []byte, doubleHash bool) ([]byte, error) {
return btcec.SignCompact(btcec.S256(), s.RootKey, digest[:], true)
var digest []byte
if doubleHash {
digest = chainhash.DoubleHashB(msg)
} else {
digest = chainhash.HashB(msg)
}
return btcec.SignCompact(btcec.S256(), s.RootKey, digest, true)
}