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lnwire: modify RevokeAndAck to remove NextRevocationHash 

This commit modifies the RevokeAndAck message in order to bring it more
in line with the current draft of the specification. The prior version
was based on a version that used a revocation hash for HTLC’s and a
revocation key for commitment outputs. The current commitment design
uses revocation keys uniformly throughout.
This commit is contained in:
Olaoluwa Osuntokun 2017-07-28 16:22:33 -07:00
parent b2d86bffc5
commit 2263a6a1b7
No known key found for this signature in database
GPG Key ID: 9CC5B105D03521A2
1 changed files with 9 additions and 22 deletions
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31
lnwire/revoke_and_ack.go
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@ -22,25 +22,14 @@ type RevokeAndAck struct {
// Revocation is the preimage to the revocation hash of the now prior
// commitment transaction.
//
// If the received revocation is the all zeroes hash ('0' * 32), then
// this RevokeAndAck is being sent in order to build up the sender's
// initial revocation window (IRW). In this case, the RevokeAndAck
// should be added to the receiver's queue of unused revocations to be
// used to construct future commitment transactions.
Revocation [32]byte
// NextRevocationKey is the next revocation key which should be added
// to the queue of unused revocation keys for the remote peer. This key
// will be used within the revocation clause for any new commitment
// transactions created for the remote peer.
// NextRevocationKey is the next commitment point which should be used
// for the next commitment transaction the remote peer creates for us.
// This, in conjunction without revocation base point will be used to
// create the proper revocation key used within the commitment
// transaction.
NextRevocationKey *btcec.PublicKey
// NextRevocationHash is the next revocation hash which should be added
// to the queue on unused revocation hashes for the remote peer. This
// revocation hash will be used within any HTLCs included within this
// next commitment transaction.
NextRevocationHash [32]byte
}
// NewRevokeAndAck creates a new RevokeAndAck message.
@ -61,7 +50,6 @@ func (c *RevokeAndAck) Decode(r io.Reader, pver uint32) error {
&c.ChanID,
c.Revocation[:],
&c.NextRevocationKey,
c.NextRevocationHash[:],
)
}
@ -74,7 +62,6 @@ func (c *RevokeAndAck) Encode(w io.Writer, pver uint32) error {
c.ChanID,
c.Revocation[:],
c.NextRevocationKey,
c.NextRevocationHash[:],
)
}
@ -86,11 +73,11 @@ func (c *RevokeAndAck) MsgType() MessageType {
return MsgRevokeAndAck
}
// MaxPayloadLength returns the maximum allowed payload size for a
// RevokeAndAck complete message observing the specified protocol version.
// MaxPayloadLength returns the maximum allowed payload size for a RevokeAndAck
// complete message observing the specified protocol version.
//
// This is part of the lnwire.Message interface.
func (c *RevokeAndAck) MaxPayloadLength(uint32) uint32 {
// 32 + 32 + 33 + 32
return 129
// 32 + 32 + 33
return 97
}