X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fln%2Fchan_utils.rs;h=c229819c3b64e6d3e875002c814190a1d40e153e;hb=07db23d102738d1e84e3d2cb36101cef92e1761d;hp=9be3f38a78e6c027c7328a6d5e6c35e69013c8bd;hpb=9098240e341cf09578819cdf1d2950303478b137;p=rust-lightning

diff --git a/lightning/src/ln/chan_utils.rs b/lightning/src/ln/chan_utils.rs
index 9be3f38a..c229819c 100644
--- a/lightning/src/ln/chan_utils.rs
+++ b/lightning/src/ln/chan_utils.rs
@@ -262,11 +262,9 @@ pub struct TxCreationKeys {
 	pub(crate) b_htlc_key: PublicKey,
 	/// A's Payment Key (which isn't allowed to be spent from for some delay)
 	pub(crate) a_delayed_payment_key: PublicKey,
-	/// B's Payment Key
-	pub(crate) b_payment_key: PublicKey,
 }
 impl_writeable!(TxCreationKeys, 33*6,
-	{ per_commitment_point, revocation_key, a_htlc_key, b_htlc_key, a_delayed_payment_key, b_payment_key });
+	{ per_commitment_point, revocation_key, a_htlc_key, b_htlc_key, a_delayed_payment_key });
 
 /// One counterparty's public keys which do not change over the life of a channel.
 #[derive(Clone, PartialEq)]
@@ -279,9 +277,10 @@ pub struct ChannelPublicKeys {
 	/// a commitment transaction so that their counterparty can claim all available funds if they
 	/// broadcast an old state.
 	pub revocation_basepoint: PublicKey,
-	/// The base point which is used (with derive_public_key) to derive a per-commitment payment
-	/// public key which receives immediately-spendable non-HTLC-encumbered funds.
-	pub payment_basepoint: PublicKey,
+	/// The public key which receives our immediately spendable primary channel balance in
+	/// remote-broadcasted commitment transactions. This key is static across every commitment
+	/// transaction.
+	pub payment_point: PublicKey,
 	/// The base point which is used (with derive_public_key) to derive a per-commitment payment
 	/// public key which receives non-HTLC-encumbered funds which are only available for spending
 	/// after some delay (or can be claimed via the revocation path).
@@ -294,21 +293,20 @@ pub struct ChannelPublicKeys {
 impl_writeable!(ChannelPublicKeys, 33*5, {
 	funding_pubkey,
 	revocation_basepoint,
-	payment_basepoint,
+	payment_point,
 	delayed_payment_basepoint,
 	htlc_basepoint
 });
 
 
 impl TxCreationKeys {
-	pub(crate) fn new<T: secp256k1::Signing + secp256k1::Verification>(secp_ctx: &Secp256k1<T>, per_commitment_point: &PublicKey, a_delayed_payment_base: &PublicKey, a_htlc_base: &PublicKey, b_revocation_base: &PublicKey, b_payment_base: &PublicKey, b_htlc_base: &PublicKey) -> Result<TxCreationKeys, secp256k1::Error> {
+	pub(crate) fn new<T: secp256k1::Signing + secp256k1::Verification>(secp_ctx: &Secp256k1<T>, per_commitment_point: &PublicKey, a_delayed_payment_base: &PublicKey, a_htlc_base: &PublicKey, b_revocation_base: &PublicKey, b_htlc_base: &PublicKey) -> Result<TxCreationKeys, secp256k1::Error> {
 		Ok(TxCreationKeys {
 			per_commitment_point: per_commitment_point.clone(),
 			revocation_key: derive_public_revocation_key(&secp_ctx, &per_commitment_point, &b_revocation_base)?,
 			a_htlc_key: derive_public_key(&secp_ctx, &per_commitment_point, &a_htlc_base)?,
 			b_htlc_key: derive_public_key(&secp_ctx, &per_commitment_point, &b_htlc_base)?,
 			a_delayed_payment_key: derive_public_key(&secp_ctx, &per_commitment_point, &a_delayed_payment_base)?,
-			b_payment_key: derive_public_key(&secp_ctx, &per_commitment_point, &b_payment_base)?,
 		})
 	}
 }
@@ -537,7 +535,6 @@ impl LocalCommitmentTransaction {
 					a_htlc_key: dummy_key.clone(),
 					b_htlc_key: dummy_key.clone(),
 					a_delayed_payment_key: dummy_key.clone(),
-					b_payment_key: dummy_key.clone(),
 				},
 			feerate_per_kw: 0,
 			per_htlc: Vec::new()