DRY basepoint and docs fix.

Author: yellowred

lightning/src/ln/channel_keys.rs

@@ -31,6 +31,23 @@ macro_rules! doc_comment {
         $($tt)*
     };
 }
+macro_rules! basepoint_impl {
+    ($BasepointT:ty) => {
+        impl $BasepointT {
+            /// Get inner Public Key
+            pub fn to_public_key(&self) -> PublicKey {
+                self.0
+            }
+        }
+        
+        impl From<PublicKey> for $BasepointT {
+            fn from(value: PublicKey) -> Self {
+                Self(value)
+            }
+        }
+        
+    }
+}
 macro_rules! key_impl {
     ($BasepointT:ty, $KeyName:expr) => {
         doc_comment! {
@@ -80,24 +97,10 @@ macro_rules! key_read_write {
 
 
 
-/// [delayed_payment_basepoint](https://github.com/lightning/bolts/blob/master/03-transactions.md#key-derivation)
-/// Used to generate local_delayedpubkey for the latest state of a channel.
+/// Used to generate [`local_delayedpubkey`](https://github.com/lightning/bolts/blob/master/03-transactions.md#key-derivation) for the latest state of a channel.
 #[derive(PartialEq, Eq, Clone, Copy, Debug, Hash)]
 pub struct DelayedPaymentBasepoint(PublicKey);
-
-impl DelayedPaymentBasepoint {
-    /// Get inner Public Key
-    pub fn to_public_key(&self) -> PublicKey {
-        self.0
-    }
-}
-
-impl From<PublicKey> for DelayedPaymentBasepoint {
-    fn from(value: PublicKey) -> Self {
-        Self(value)
-    }
-}
-
+basepoint_impl!(DelayedPaymentBasepoint);
 key_read_write!(DelayedPaymentBasepoint);
 
 /// [delayedpubkey](https://github.com/lightning/bolts/blob/master/03-transactions.md#localpubkey-local_htlcpubkey-remote_htlcpubkey-local_delayedpubkey-and-remote_delayedpubkey-derivation)
@@ -110,24 +113,10 @@ impl DelayedPaymentKey {
 }
 key_read_write!(DelayedPaymentKey);
 
-/// [payment_basepoint](https://github.com/lightning/bolts/blob/master/03-transactions.md#key-derivation)
-/// Used to generate localpubkey for the latest state of a channel.
+/// Used to generate [localpubkey](https://github.com/lightning/bolts/blob/master/03-transactions.md#key-derivation) for the latest state of a channel.
 #[derive(PartialEq, Eq, Clone, Copy, Debug, Hash)]
 pub struct PaymentBasepoint(PublicKey);
-
-impl PaymentBasepoint {
-    /// Get inner Public Key
-    pub fn to_public_key(&self) -> PublicKey {
-        self.0
-    }
-}
-
-impl From<PublicKey> for PaymentBasepoint {
-    fn from(value: PublicKey) -> Self {
-        Self(value)
-    }
-}
-
+basepoint_impl!(PaymentBasepoint);
 key_read_write!(PaymentBasepoint);
 
 
@@ -141,24 +130,10 @@ impl PaymentKey {
 }
 key_read_write!(PaymentKey);
 
-/// [htlc_basepoint](https://github.com/lightning/bolts/blob/master/03-transactions.md#key-derivation)
-/// Used to generate htlcpubkey for the latest state of a channel.
+/// Used to generate [htlcpubkey](https://github.com/lightning/bolts/blob/master/03-transactions.md#key-derivation) for the latest state of a channel.
 #[derive(PartialEq, Eq, Clone, Copy, Debug, Hash)]
 pub struct HtlcBasepoint(PublicKey);
-
-impl HtlcBasepoint {
-    /// Get inner Public Key
-    pub fn to_public_key(&self) -> PublicKey {
-        self.0
-    }
-}
-
-impl From<PublicKey> for HtlcBasepoint {
-    fn from(value: PublicKey) -> Self {
-        Self(value)
-    }
-}
-
+basepoint_impl!(HtlcBasepoint);
 key_read_write!(HtlcBasepoint);
 
 
@@ -187,24 +162,10 @@ fn derive_public_key<T: secp256k1::Signing>(secp_ctx: &Secp256k1<T>, per_commitm
 		.expect("Addition only fails if the tweak is the inverse of the key. This is not possible when the tweak contains the hash of the key.")
 }
 
-/// [revocation_basepoint](https://github.com/lightning/bolts/blob/master/03-transactions.md#key-derivation)
-/// Used to generate htlcpubkey for the latest state of a channel.
+/// Used to generate [htlcpubkey](https://github.com/lightning/bolts/blob/master/03-transactions.md#key-derivation) for the latest state of a channel.
 #[derive(PartialEq, Eq, Clone, Copy, Debug, Hash)]
 pub struct RevocationBasepoint(PublicKey);
-
-impl RevocationBasepoint {
-    /// Get inner Public Key
-    pub fn to_public_key(&self) -> PublicKey {
-        self.0
-    }
-}
-
-impl From<PublicKey> for RevocationBasepoint {
-    fn from(value: PublicKey) -> Self {
-        Self(value)
-    }
-}
-
+basepoint_impl!(RevocationBasepoint);
 key_read_write!(RevocationBasepoint);
 
 

lightning/src/sign/mod.rs

@@ -1306,7 +1306,7 @@ impl EcdsaChannelSigner for InMemorySigner {
 				&secp_ctx,  &HtlcBasepoint::from(counterparty_keys.htlc_basepoint), &per_commitment_point,
 			);
 			let holder_htlcpubkey = HtlcKey::from_basepoint(
-				&secp_ctx,  &HtlcBasepoint::from(self.pubkeys().htlc_basepoint.to_owned()), &per_commitment_point,
+				&secp_ctx,  &HtlcBasepoint::from(self.pubkeys().htlc_basepoint), &per_commitment_point,
 			);
 			let chan_type = self.channel_type_features().expect(MISSING_PARAMS_ERR);
 			chan_utils::get_htlc_redeemscript_with_explicit_keys(&htlc, chan_type, &counterparty_htlcpubkey, &holder_htlcpubkey, &revocation_pubkey)
@@ -1337,10 +1337,10 @@ impl EcdsaChannelSigner for InMemorySigner {
 		);
 		let counterparty_keys = self.counterparty_pubkeys().expect(MISSING_PARAMS_ERR);
 		let counterparty_htlcpubkey = HtlcKey::from_basepoint(
-			&secp_ctx,  &HtlcBasepoint::from(counterparty_keys.htlc_basepoint.to_owned()), &per_commitment_point,
+			&secp_ctx,  &HtlcBasepoint::from(counterparty_keys.htlc_basepoint), &per_commitment_point,
 		);
 		let htlcpubkey = HtlcKey::from_basepoint(
-			&secp_ctx,  &HtlcBasepoint::from(self.pubkeys().htlc_basepoint.to_owned()), &per_commitment_point,
+			&secp_ctx,  &HtlcBasepoint::from(self.pubkeys().htlc_basepoint), &per_commitment_point,
 		);
 		let chan_type = self.channel_type_features().expect(MISSING_PARAMS_ERR);
 		let witness_script = chan_utils::get_htlc_redeemscript_with_explicit_keys(&htlc, chan_type, &counterparty_htlcpubkey, &htlcpubkey, &revocation_pubkey);

lightning/src/util/test_channel_signer.rs

@@ -232,7 +232,7 @@ impl EcdsaChannelSigner for TestChannelSigner {
 				input, &witness_script, htlc_descriptor.htlc.amount_msat / 1000, sighash_type
 			).unwrap();
 			let countersignatory_htlc_key = HtlcKey::from_basepoint(
-				&secp_ctx,&HtlcBasepoint::from(self.inner.counterparty_pubkeys().unwrap().htlc_basepoint.to_owned()), &htlc_descriptor.per_commitment_point,
+				&secp_ctx,&HtlcBasepoint::from(self.inner.counterparty_pubkeys().unwrap().htlc_basepoint), &htlc_descriptor.per_commitment_point,
 			);
 
 			secp_ctx.verify_ecdsa(