Move keysinterface.rs to a directory-level module called sign.

lightningdevkit · May 3, 2023 · 6cb9919 · 6cb9919
1 parent ec3de62
commit 6cb9919
Show file tree

Hide file tree

Showing 52 changed files with 109 additions and 108 deletions.
diff --git a/fuzz/src/chanmon_consistency.rs b/fuzz/src/chanmon_consistency.rs
@@ -37,7 +37,7 @@ use lightning::chain::{BestBlock, ChannelMonitorUpdateStatus, chainmonitor, chan
 use lightning::chain::channelmonitor::{ChannelMonitor, MonitorEvent};
 use lightning::chain::transaction::OutPoint;
 use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
-use lightning::chain::keysinterface::{KeyMaterial, InMemorySigner, Recipient, EntropySource, NodeSigner, SignerProvider};
+use lightning::sign::{KeyMaterial, InMemorySigner, Recipient, EntropySource, NodeSigner, SignerProvider};
 use lightning::events;
 use lightning::events::MessageSendEventsProvider;
 use lightning::ln::{PaymentHash, PaymentPreimage, PaymentSecret};

diff --git a/fuzz/src/full_stack.rs b/fuzz/src/full_stack.rs
@@ -34,7 +34,7 @@ use lightning::chain::{BestBlock, ChannelMonitorUpdateStatus, Confirm, Listen};
 use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
 use lightning::chain::chainmonitor;
 use lightning::chain::transaction::OutPoint;
-use lightning::chain::keysinterface::{InMemorySigner, Recipient, KeyMaterial, EntropySource, NodeSigner, SignerProvider};
+use lightning::sign::{InMemorySigner, Recipient, KeyMaterial, EntropySource, NodeSigner, SignerProvider};
 use lightning::events::Event;
 use lightning::ln::{PaymentHash, PaymentPreimage, PaymentSecret};
 use lightning::ln::channelmanager::{ChainParameters, ChannelDetails, ChannelManager, PaymentId, RecipientOnionFields, Retry};

diff --git a/fuzz/src/invoice_request_deser.rs b/fuzz/src/invoice_request_deser.rs
@@ -11,7 +11,7 @@ use bitcoin::secp256k1::{KeyPair, Parity, PublicKey, Secp256k1, SecretKey, self}
 use crate::utils::test_logger;
 use core::convert::{Infallible, TryFrom};
 use lightning::blinded_path::BlindedPath;
-use lightning::chain::keysinterface::EntropySource;
+use lightning::sign::EntropySource;
 use lightning::ln::PaymentHash;
 use lightning::ln::features::BlindedHopFeatures;
 use lightning::offers::invoice::{BlindedPayInfo, UnsignedInvoice};

diff --git a/fuzz/src/onion_message.rs b/fuzz/src/onion_message.rs
@@ -5,7 +5,7 @@ use bitcoin::secp256k1::{PublicKey, Scalar, Secp256k1, SecretKey};
 use bitcoin::secp256k1::ecdh::SharedSecret;
 use bitcoin::secp256k1::ecdsa::RecoverableSignature;
 
-use lightning::chain::keysinterface::{Recipient, KeyMaterial, EntropySource, NodeSigner, SignerProvider};
+use lightning::sign::{Recipient, KeyMaterial, EntropySource, NodeSigner, SignerProvider};
 use lightning::ln::msgs::{self, DecodeError, OnionMessageHandler};
 use lightning::ln::script::ShutdownScript;
 use lightning::util::enforcing_trait_impls::EnforcingSigner;

diff --git a/fuzz/src/refund_deser.rs b/fuzz/src/refund_deser.rs
@@ -11,7 +11,7 @@ use bitcoin::secp256k1::{KeyPair, PublicKey, Secp256k1, SecretKey, self};
 use crate::utils::test_logger;
 use core::convert::{Infallible, TryFrom};
 use lightning::blinded_path::BlindedPath;
-use lightning::chain::keysinterface::EntropySource;
+use lightning::sign::EntropySource;
 use lightning::ln::PaymentHash;
 use lightning::ln::features::BlindedHopFeatures;
 use lightning::offers::invoice::{BlindedPayInfo, UnsignedInvoice};

diff --git a/lightning-background-processor/src/lib.rs b/lightning-background-processor/src/lib.rs
@@ -25,7 +25,7 @@ extern crate lightning_rapid_gossip_sync;
 use lightning::chain;
 use lightning::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
 use lightning::chain::chainmonitor::{ChainMonitor, Persist};
-use lightning::chain::keysinterface::{EntropySource, NodeSigner, SignerProvider};
+use lightning::sign::{EntropySource, NodeSigner, SignerProvider};
 use lightning::events::{Event, PathFailure};
 #[cfg(feature = "std")]
 use lightning::events::{EventHandler, EventsProvider};
@@ -506,11 +506,11 @@ use core::task;
 /// # use lightning_background_processor::{process_events_async, GossipSync};
 /// # type MyBroadcaster = dyn lightning::chain::chaininterface::BroadcasterInterface + Send + Sync;
 /// # type MyFeeEstimator = dyn lightning::chain::chaininterface::FeeEstimator + Send + Sync;
-/// # type MyNodeSigner = dyn lightning::chain::keysinterface::NodeSigner + Send + Sync;
+/// # type MyNodeSigner = dyn lightning::sign::NodeSigner + Send + Sync;
 /// # type MyUtxoLookup = dyn lightning::routing::utxo::UtxoLookup + Send + Sync;
 /// # type MyFilter = dyn lightning::chain::Filter + Send + Sync;
 /// # type MyLogger = dyn lightning::util::logger::Logger + Send + Sync;
-/// # type MyChainMonitor = lightning::chain::chainmonitor::ChainMonitor<lightning::chain::keysinterface::InMemorySigner, Arc<MyFilter>, Arc<MyBroadcaster>, Arc<MyFeeEstimator>, Arc<MyLogger>, Arc<MyPersister>>;
+/// # type MyChainMonitor = lightning::chain::chainmonitor::ChainMonitor<lightning::sign::InMemorySigner, Arc<MyFilter>, Arc<MyBroadcaster>, Arc<MyFeeEstimator>, Arc<MyLogger>, Arc<MyPersister>>;
 /// # type MyPeerManager = lightning::ln::peer_handler::SimpleArcPeerManager<MySocketDescriptor, MyChainMonitor, MyBroadcaster, MyFeeEstimator, MyUtxoLookup, MyLogger>;
 /// # type MyNetworkGraph = lightning::routing::gossip::NetworkGraph<Arc<MyLogger>>;
 /// # type MyGossipSync = lightning::routing::gossip::P2PGossipSync<Arc<MyNetworkGraph>, Arc<MyUtxoLookup>, Arc<MyLogger>>;
@@ -825,7 +825,7 @@ mod tests {
 	use bitcoin::secp256k1::{SecretKey, PublicKey, Secp256k1};
 	use lightning::chain::{BestBlock, Confirm, chainmonitor};
 	use lightning::chain::channelmonitor::ANTI_REORG_DELAY;
-	use lightning::chain::keysinterface::{InMemorySigner, KeysManager};
+	use lightning::sign::{InMemorySigner, KeysManager};
 	use lightning::chain::transaction::OutPoint;
 	use lightning::events::{Event, PathFailure, MessageSendEventsProvider, MessageSendEvent};
 	use lightning::{get_event_msg, get_event};

diff --git a/lightning-block-sync/src/init.rs b/lightning-block-sync/src/init.rs
@@ -47,8 +47,8 @@ BlockSourceResult<ValidatedBlockHeader> where B::Target: BlockSource {
 /// use lightning::chain::channelmonitor::ChannelMonitor;
 /// use lightning::chain::chaininterface::BroadcasterInterface;
 /// use lightning::chain::chaininterface::FeeEstimator;
-/// use lightning::chain::keysinterface;
-/// use lightning::chain::keysinterface::{EntropySource, NodeSigner, SignerProvider};
+/// use lightning::sign;
+/// use lightning::sign::{EntropySource, NodeSigner, SignerProvider};
 /// use lightning::ln::channelmanager::{ChannelManager, ChannelManagerReadArgs};
 /// use lightning::routing::router::Router;
 /// use lightning::util::config::UserConfig;

diff --git a/lightning-invoice/src/payment.rs b/lightning-invoice/src/payment.rs
@@ -15,7 +15,7 @@ use bitcoin_hashes::Hash;
 
 use lightning::chain;
 use lightning::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
-use lightning::chain::keysinterface::{NodeSigner, SignerProvider, EntropySource};
+use lightning::sign::{NodeSigner, SignerProvider, EntropySource};
 use lightning::ln::PaymentHash;
 use lightning::ln::channelmanager::{ChannelManager, PaymentId, Retry, RetryableSendFailure, RecipientOnionFields};
 use lightning::routing::router::{PaymentParameters, RouteParameters, Router};

diff --git a/lightning-invoice/src/utils.rs b/lightning-invoice/src/utils.rs
@@ -7,7 +7,7 @@ use bech32::ToBase32;
 use bitcoin_hashes::Hash;
 use lightning::chain;
 use lightning::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
-use lightning::chain::keysinterface::{Recipient, NodeSigner, SignerProvider, EntropySource};
+use lightning::sign::{Recipient, NodeSigner, SignerProvider, EntropySource};
 use lightning::ln::{PaymentHash, PaymentSecret};
 use lightning::ln::channelmanager::{ChannelDetails, ChannelManager, MIN_FINAL_CLTV_EXPIRY_DELTA};
 use lightning::ln::channelmanager::{PhantomRouteHints, MIN_CLTV_EXPIRY_DELTA};
@@ -50,7 +50,7 @@ use core::time::Duration;
 /// invoices in its `sign_invoice` implementation ([`PhantomKeysManager`] satisfies this
 /// requirement).
 ///
-/// [`PhantomKeysManager`]: lightning::chain::keysinterface::PhantomKeysManager
+/// [`PhantomKeysManager`]: lightning::sign::PhantomKeysManager
 /// [`ChannelManager::get_phantom_route_hints`]: lightning::ln::channelmanager::ChannelManager::get_phantom_route_hints
 /// [`ChannelManager::create_inbound_payment`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment
 /// [`ChannelManager::create_inbound_payment_for_hash`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment_for_hash
@@ -107,7 +107,7 @@ where
 /// invoices in its `sign_invoice` implementation ([`PhantomKeysManager`] satisfies this
 /// requirement).
 ///
-/// [`PhantomKeysManager`]: lightning::chain::keysinterface::PhantomKeysManager
+/// [`PhantomKeysManager`]: lightning::sign::PhantomKeysManager
 /// [`ChannelManager::get_phantom_route_hints`]: lightning::ln::channelmanager::ChannelManager::get_phantom_route_hints
 /// [`ChannelManager::create_inbound_payment`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment
 /// [`ChannelManager::create_inbound_payment_for_hash`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment_for_hash
@@ -227,7 +227,7 @@ where
 /// * Select up to three channels per node.
 /// * Select one hint from each node, up to three hints or until we run out of hints.
 ///
-/// [`PhantomKeysManager`]: lightning::chain::keysinterface::PhantomKeysManager
+/// [`PhantomKeysManager`]: lightning::sign::PhantomKeysManager
 fn select_phantom_hints<L: Deref>(amt_msat: Option<u64>, phantom_route_hints: Vec<PhantomRouteHints>,
 	logger: L) -> Vec<RouteHint>
 where
@@ -629,7 +629,7 @@ fn sort_and_filter_channels<L: Deref>(
 				// previous channel to avoid announcing non-public channels.
 				let new_now_public = channel.is_public && !entry.get().is_public;
 				// Decide whether we prefer the currently selected channel with the node to the new one,
-				// based on their inbound capacity. 
+				// based on their inbound capacity.
 				let prefer_current = prefer_current_channel(min_inbound_capacity_msat, current_max_capacity,
 					channel.inbound_capacity_msat);
 				// If the public-ness of the channel has not changed (in which case simply defer to
@@ -768,7 +768,7 @@ mod test {
 	use crate::{Currency, Description, InvoiceDescription, SignOrCreationError, CreationError};
 	use bitcoin_hashes::{Hash, sha256};
 	use bitcoin_hashes::sha256::Hash as Sha256;
-	use lightning::chain::keysinterface::PhantomKeysManager;
+	use lightning::sign::PhantomKeysManager;
 	use lightning::events::{MessageSendEvent, MessageSendEventsProvider, Event};
 	use lightning::ln::{PaymentPreimage, PaymentHash};
 	use lightning::ln::channelmanager::{PhantomRouteHints, MIN_FINAL_CLTV_EXPIRY_DELTA, PaymentId, RecipientOnionFields, Retry};
@@ -793,10 +793,10 @@ mod test {
 
 		// Minimum set, prefer candidate channel over minimum + buffer.
 		assert_eq!(crate::utils::prefer_current_channel(Some(100), 105, 125), false);
-		
+
 		// Minimum set, both channels sufficient, prefer smaller current channel.
 		assert_eq!(crate::utils::prefer_current_channel(Some(100), 115, 125), true);
-		
+
 		// Minimum set, both channels sufficient, prefer smaller candidate channel.
 		assert_eq!(crate::utils::prefer_current_channel(Some(100), 200, 160), false);
 

diff --git a/lightning-persister/src/lib.rs b/lightning-persister/src/lib.rs
@@ -20,7 +20,7 @@ extern crate libc;
 use bitcoin::hash_types::{BlockHash, Txid};
 use bitcoin::hashes::hex::FromHex;
 use lightning::chain::channelmonitor::ChannelMonitor;
-use lightning::chain::keysinterface::{EntropySource, SignerProvider};
+use lightning::sign::{EntropySource, SignerProvider};
 use lightning::util::ser::{ReadableArgs, Writeable};
 use lightning::util::persist::KVStorePersister;
 use std::fs;

diff --git a/lightning/src/blinded_path/mod.rs b/lightning/src/blinded_path/mod.rs
@@ -15,7 +15,7 @@ use bitcoin::hashes::{Hash, HashEngine};
 use bitcoin::hashes::sha256::Hash as Sha256;
 use bitcoin::secp256k1::{self, PublicKey, Scalar, Secp256k1, SecretKey};
 
-use crate::chain::keysinterface::{EntropySource, NodeSigner, Recipient};
+use crate::sign::{EntropySource, NodeSigner, Recipient};
 use crate::onion_message::ControlTlvs;
 use crate::ln::msgs::DecodeError;
 use crate::ln::onion_utils;

diff --git a/lightning/src/chain/chainmonitor.rs b/lightning/src/chain/chainmonitor.rs
@@ -31,7 +31,7 @@ use crate::chain::{ChannelMonitorUpdateStatus, Filter, WatchedOutput};
 use crate::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
 use crate::chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, Balance, MonitorEvent, TransactionOutputs, LATENCY_GRACE_PERIOD_BLOCKS};
 use crate::chain::transaction::{OutPoint, TransactionData};
-use crate::chain::keysinterface::WriteableEcdsaChannelSigner;
+use crate::sign::WriteableEcdsaChannelSigner;
 use crate::events;
 use crate::events::{Event, EventHandler};
 use crate::util::atomic_counter::AtomicCounter;

diff --git a/lightning/src/chain/channelmonitor.rs b/lightning/src/chain/channelmonitor.rs
@@ -42,7 +42,7 @@ use crate::chain;
 use crate::chain::{BestBlock, WatchedOutput};
 use crate::chain::chaininterface::{BroadcasterInterface, FeeEstimator, LowerBoundedFeeEstimator};
 use crate::chain::transaction::{OutPoint, TransactionData};
-use crate::chain::keysinterface::{SpendableOutputDescriptor, StaticPaymentOutputDescriptor, DelayedPaymentOutputDescriptor, WriteableEcdsaChannelSigner, SignerProvider, EntropySource};
+use crate::sign::{SpendableOutputDescriptor, StaticPaymentOutputDescriptor, DelayedPaymentOutputDescriptor, WriteableEcdsaChannelSigner, SignerProvider, EntropySource};
 #[cfg(anchors)]
 use crate::chain::onchaintx::ClaimEvent;
 use crate::chain::onchaintx::OnchainTxHandler;
@@ -4097,7 +4097,7 @@ mod tests {
 	use crate::chain::channelmonitor::ChannelMonitor;
 	use crate::chain::package::{weight_offered_htlc, weight_received_htlc, weight_revoked_offered_htlc, weight_revoked_received_htlc, WEIGHT_REVOKED_OUTPUT};
 	use crate::chain::transaction::OutPoint;
-	use crate::chain::keysinterface::InMemorySigner;
+	use crate::sign::InMemorySigner;
 	use crate::events::ClosureReason;
 	use crate::ln::{PaymentPreimage, PaymentHash};
 	use crate::ln::chan_utils;

diff --git a/lightning/src/chain/mod.rs b/lightning/src/chain/mod.rs
@@ -17,7 +17,7 @@ use bitcoin::network::constants::Network;
 use bitcoin::secp256k1::PublicKey;
 
 use crate::chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, MonitorEvent};
-use crate::chain::keysinterface::WriteableEcdsaChannelSigner;
+use crate::sign::WriteableEcdsaChannelSigner;
 use crate::chain::transaction::{OutPoint, TransactionData};
 
 use crate::prelude::*;
@@ -26,7 +26,6 @@ pub mod chaininterface;
 pub mod chainmonitor;
 pub mod channelmonitor;
 pub mod transaction;
-pub mod keysinterface;
 pub(crate) mod onchaintx;
 pub(crate) mod package;
 

diff --git a/lightning/src/chain/onchaintx.rs b/lightning/src/chain/onchaintx.rs
@@ -23,7 +23,7 @@ use bitcoin::hash_types::{Txid, BlockHash};
 use bitcoin::secp256k1::{Secp256k1, ecdsa::Signature};
 use bitcoin::secp256k1;
 
-use crate::chain::keysinterface::{ChannelSigner, EntropySource, SignerProvider};
+use crate::sign::{ChannelSigner, EntropySource, SignerProvider};
 use crate::ln::msgs::DecodeError;
 use crate::ln::PaymentPreimage;
 #[cfg(anchors)]
@@ -33,7 +33,7 @@ use crate::ln::chan_utils::{ChannelTransactionParameters, HolderCommitmentTransa
 use crate::chain::chaininterface::ConfirmationTarget;
 use crate::chain::chaininterface::{FeeEstimator, BroadcasterInterface, LowerBoundedFeeEstimator};
 use crate::chain::channelmonitor::{ANTI_REORG_DELAY, CLTV_SHARED_CLAIM_BUFFER};
-use crate::chain::keysinterface::WriteableEcdsaChannelSigner;
+use crate::sign::WriteableEcdsaChannelSigner;
 #[cfg(anchors)]
 use crate::chain::package::PackageSolvingData;
 use crate::chain::package::PackageTemplate;

diff --git a/lightning/src/chain/package.rs b/lightning/src/chain/package.rs
@@ -25,7 +25,7 @@ use crate::ln::chan_utils::{TxCreationKeys, HTLCOutputInCommitment};
 use crate::ln::chan_utils;
 use crate::ln::msgs::DecodeError;
 use crate::chain::chaininterface::{FeeEstimator, ConfirmationTarget, MIN_RELAY_FEE_SAT_PER_1000_WEIGHT};
-use crate::chain::keysinterface::WriteableEcdsaChannelSigner;
+use crate::sign::WriteableEcdsaChannelSigner;
 #[cfg(anchors)]
 use crate::chain::onchaintx::ExternalHTLCClaim;
 use crate::chain::onchaintx::OnchainTxHandler;

diff --git a/lightning/src/events/bump_transaction.rs b/lightning/src/events/bump_transaction.rs
@@ -24,13 +24,13 @@ pub struct AnchorDescriptor {
 	/// A unique identifier used along with `channel_value_satoshis` to re-derive the
 	/// [`InMemorySigner`] required to sign `input`.
 	///
-	/// [`InMemorySigner`]: crate::chain::keysinterface::InMemorySigner
+	/// [`InMemorySigner`]: crate::sign::InMemorySigner
 	pub channel_keys_id: [u8; 32],
 	/// The value in satoshis of the channel we're attempting to spend the anchor output of. This is
 	/// used along with `channel_keys_id` to re-derive the [`InMemorySigner`] required to sign
 	/// `input`.
 	///
-	/// [`InMemorySigner`]: crate::chain::keysinterface::InMemorySigner
+	/// [`InMemorySigner`]: crate::sign::InMemorySigner
 	pub channel_value_satoshis: u64,
 	/// The transaction input's outpoint corresponding to the commitment transaction's anchor
 	/// output.
@@ -43,19 +43,19 @@ pub struct HTLCDescriptor {
 	/// A unique identifier used along with `channel_value_satoshis` to re-derive the
 	/// [`InMemorySigner`] required to sign `input`.
 	///
-	/// [`InMemorySigner`]: crate::chain::keysinterface::InMemorySigner
+	/// [`InMemorySigner`]: crate::sign::InMemorySigner
 	pub channel_keys_id: [u8; 32],
 	/// The value in satoshis of the channel we're attempting to spend the anchor output of. This is
 	/// used along with `channel_keys_id` to re-derive the [`InMemorySigner`] required to sign
 	/// `input`.
 	///
-	/// [`InMemorySigner`]: crate::chain::keysinterface::InMemorySigner
+	/// [`InMemorySigner`]: crate::sign::InMemorySigner
 	pub channel_value_satoshis: u64,
 	/// The necessary channel parameters that need to be provided to the re-derived
 	/// [`InMemorySigner`] through [`ChannelSigner::provide_channel_parameters`].
 	///
-	/// [`InMemorySigner`]: crate::chain::keysinterface::InMemorySigner
-	/// [`ChannelSigner::provide_channel_parameters`]: crate::chain::keysinterface::ChannelSigner::provide_channel_parameters
+	/// [`InMemorySigner`]: crate::sign::InMemorySigner
+	/// [`ChannelSigner::provide_channel_parameters`]: crate::sign::ChannelSigner::provide_channel_parameters
 	pub channel_parameters: ChannelTransactionParameters,
 	/// The txid of the commitment transaction in which the HTLC output lives.
 	pub commitment_txid: Txid,
@@ -168,9 +168,9 @@ pub enum BumpTransactionEvent {
 	/// an empty `pending_htlcs`), confirmation of the commitment transaction can be considered to
 	/// be not urgent.
 	///
-	/// [`InMemorySigner`]: crate::chain::keysinterface::InMemorySigner
-	/// [`KeysManager::derive_channel_keys`]: crate::chain::keysinterface::KeysManager::derive_channel_keys
-	/// [`EcdsaChannelSigner::sign_holder_anchor_input`]: crate::chain::keysinterface::EcdsaChannelSigner::sign_holder_anchor_input
+	/// [`InMemorySigner`]: crate::sign::InMemorySigner
+	/// [`KeysManager::derive_channel_keys`]: crate::sign::KeysManager::derive_channel_keys
+	/// [`EcdsaChannelSigner::sign_holder_anchor_input`]: crate::sign::EcdsaChannelSigner::sign_holder_anchor_input
 	/// [`build_anchor_input_witness`]: crate::ln::chan_utils::build_anchor_input_witness
 	ChannelClose {
 		/// The target feerate that the transaction package, which consists of the commitment
@@ -217,9 +217,9 @@ pub enum BumpTransactionEvent {
 	/// longer able to commit external confirmed funds to the HTLC transaction or the fee committed
 	/// to the HTLC transaction is greater in value than the HTLCs being claimed.
 	///
-	/// [`InMemorySigner`]: crate::chain::keysinterface::InMemorySigner
-	/// [`KeysManager::derive_channel_keys`]: crate::chain::keysinterface::KeysManager::derive_channel_keys
-	/// [`EcdsaChannelSigner::sign_holder_htlc_transaction`]: crate::chain::keysinterface::EcdsaChannelSigner::sign_holder_htlc_transaction
+	/// [`InMemorySigner`]: crate::sign::InMemorySigner
+	/// [`KeysManager::derive_channel_keys`]: crate::sign::KeysManager::derive_channel_keys
+	/// [`EcdsaChannelSigner::sign_holder_htlc_transaction`]: crate::sign::EcdsaChannelSigner::sign_holder_htlc_transaction
 	/// [`HTLCDescriptor::tx_input_witness`]: HTLCDescriptor::tx_input_witness
 	HTLCResolution {
 		/// The target feerate that the resulting HTLC transaction must meet.