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channeldb: also store their current revocation hash

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We now also store their current revocation hash which is given to us
along with the revocation key once an initial HTLC is added to a
commitment transaction.
This commit is contained in:
Olaoluwa Osuntokun 2016-07-05 16:48:23 -07:00
parent 06af4b130f
commit 1f7d9b6425
No known key found for this signature in database
GPG Key ID: 9CC5B105D03521A2
2 changed files with 15 additions and 3 deletions
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15
channeldb/channel.go
View File

@ -134,9 +134,10 @@ type OpenChannel struct {
// Current revocation for their commitment transaction. However, since
// this the derived public key, we don't yet have the pre-image so we
// aren't yet able to verify that it's actually in the hash chain.
TheirCurrentRevocation *btcec.PublicKey
LocalElkrem *elkrem.ElkremSender
RemoteElkrem *elkrem.ElkremReceiver
TheirCurrentRevocation *btcec.PublicKey
TheirCurrentRevocationHash [32]byte
LocalElkrem *elkrem.ElkremSender
RemoteElkrem *elkrem.ElkremReceiver
// The pkScript for both sides to be used for final delivery in the case
// of a cooperative close.
@ -1029,6 +1030,10 @@ func putChanEklremState(nodeChanBucket *bolt.Bucket, channel *OpenChannel) error
return err
}
if _, err := b.Write(channel.TheirCurrentRevocationHash[:]); err != nil {
return err
}
// TODO(roasbeef): shouldn't be storing on disk, should re-derive as
// needed
senderBytes := channel.LocalElkrem.ToBytes()
@ -1074,6 +1079,10 @@ func fetchChanEklremState(nodeChanBucket *bolt.Bucket, channel *OpenChannel) err
return err
}
if _, err := elkremStateBytes.Read(channel.TheirCurrentRevocationHash[:]); err != nil {
return err
}
// TODO(roasbeef): should be rederiving on fly, or encrypting on disk.
senderBytes, err := wire.ReadVarBytes(elkremStateBytes, 0, 1000, "")
if err != nil {

3
channeldb/channel_test.go
View File

@ -295,6 +295,9 @@ func TestOpenChannelPutGetDelete(t *testing.T) {
if !newState.TheirCurrentRevocation.IsEqual(state.TheirCurrentRevocation) {
t.Fatalf("revocation keys don't match")
}
if !bytes.Equal(newState.TheirCurrentRevocationHash[:], state.TheirCurrentRevocationHash[:]) {
t.Fatalf("revocation hashes don't match")
}
// Finally to wrap up the test, delete the state of the channel within
// the database. This involves "closing" the channel which removes all