use crate::chain::chaininterface::{FeeEstimator, ConfirmationTarget, LowerBoundedFeeEstimator};
use crate::chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateStep, LATENCY_GRACE_PERIOD_BLOCKS};
use crate::chain::transaction::{OutPoint, TransactionData};
-use crate::chain::keysinterface::{Sign, KeysInterface};
+use crate::chain::keysinterface::{Sign, KeysInterface, BaseSign};
use crate::util::events::ClosureReason;
use crate::util::ser::{Readable, ReadableArgs, Writeable, Writer, VecWriter};
use crate::util::logger::Logger;
// We track whether we already emitted a `ChannelReady` event.
channel_ready_event_emitted: bool,
+
+ /// The unique identifier used to re-derive the private key material for the channel through
+ /// [`KeysInterface::derive_channel_signer`].
+ channel_keys_id: [u8; 32],
}
#[cfg(any(test, fuzzing))]
let opt_anchors = false; // TODO - should be based on features
let holder_selected_contest_delay = config.channel_handshake_config.our_to_self_delay;
- let holder_signer = keys_provider.get_channel_signer(false, channel_value_satoshis);
+ let channel_keys_id = keys_provider.generate_channel_keys_id(false, channel_value_satoshis, user_id);
+ let holder_signer = keys_provider.derive_channel_signer(channel_value_satoshis, channel_keys_id);
let pubkeys = holder_signer.pubkeys().clone();
if !their_features.supports_wumbo() && channel_value_satoshis > MAX_FUNDING_SATOSHIS_NO_WUMBO {
historical_inbound_htlc_fulfills: HashSet::new(),
channel_type: Self::get_initial_channel_type(&config),
+ channel_keys_id,
})
}
return Err(ChannelError::Close("Channel Type was not understood - we require static remote key".to_owned()));
}
- let holder_signer = keys_provider.get_channel_signer(true, msg.funding_satoshis);
+ let channel_keys_id = keys_provider.generate_channel_keys_id(true, msg.funding_satoshis, user_id);
+ let holder_signer = keys_provider.derive_channel_signer(msg.funding_satoshis, channel_keys_id);
let pubkeys = holder_signer.pubkeys().clone();
let counterparty_pubkeys = ChannelPublicKeys {
funding_pubkey: msg.funding_pubkey,
historical_inbound_htlc_fulfills: HashSet::new(),
channel_type,
+ channel_keys_id,
};
Ok(chan)
&self.get_counterparty_pubkeys().funding_pubkey
}
- pub fn funding_created<L: Deref>(&mut self, msg: &msgs::FundingCreated, best_block: BestBlock, logger: &L) -> Result<(msgs::FundingSigned, ChannelMonitor<Signer>, Option<msgs::ChannelReady>), ChannelError> where L::Target: Logger {
+ pub fn funding_created<K: Deref, L: Deref>(
+ &mut self, msg: &msgs::FundingCreated, best_block: BestBlock, keys_source: &K, logger: &L
+ ) -> Result<(msgs::FundingSigned, ChannelMonitor<<K::Target as KeysInterface>::Signer>, Option<msgs::ChannelReady>), ChannelError>
+ where
+ K::Target: KeysInterface,
+ L::Target: Logger
+ {
if self.is_outbound() {
return Err(ChannelError::Close("Received funding_created for an outbound channel?".to_owned()));
}
self.channel_transaction_parameters.funding_outpoint = Some(funding_txo);
// This is an externally observable change before we finish all our checks. In particular
// funding_created_signature may fail.
- self.holder_signer.ready_channel(&self.channel_transaction_parameters);
+ self.holder_signer.provide_channel_parameters(&self.channel_transaction_parameters);
let (counterparty_initial_commitment_txid, initial_commitment_tx, signature) = match self.funding_created_signature(&msg.signature, logger) {
Ok(res) => res,
let funding_txo_script = funding_redeemscript.to_v0_p2wsh();
let obscure_factor = get_commitment_transaction_number_obscure_factor(&self.get_holder_pubkeys().payment_point, &self.get_counterparty_pubkeys().payment_point, self.is_outbound());
let shutdown_script = self.shutdown_scriptpubkey.clone().map(|script| script.into_inner());
- let channel_monitor = ChannelMonitor::new(self.secp_ctx.clone(), self.holder_signer.clone(),
+ let mut monitor_signer = keys_source.derive_channel_signer(self.channel_value_satoshis, self.channel_keys_id);
+ monitor_signer.provide_channel_parameters(&self.channel_transaction_parameters);
+ let channel_monitor = ChannelMonitor::new(self.secp_ctx.clone(), monitor_signer,
shutdown_script, self.get_holder_selected_contest_delay(),
&self.destination_script, (funding_txo, funding_txo_script.clone()),
&self.channel_transaction_parameters,
/// Handles a funding_signed message from the remote end.
/// If this call is successful, broadcast the funding transaction (and not before!)
- pub fn funding_signed<L: Deref>(&mut self, msg: &msgs::FundingSigned, best_block: BestBlock, logger: &L) -> Result<(ChannelMonitor<Signer>, Transaction, Option<msgs::ChannelReady>), ChannelError> where L::Target: Logger {
+ pub fn funding_signed<K: Deref, L: Deref>(
+ &mut self, msg: &msgs::FundingSigned, best_block: BestBlock, keys_source: &K, logger: &L
+ ) -> Result<(ChannelMonitor<<K::Target as KeysInterface>::Signer>, Transaction, Option<msgs::ChannelReady>), ChannelError>
+ where
+ K::Target: KeysInterface,
+ L::Target: Logger
+ {
if !self.is_outbound() {
return Err(ChannelError::Close("Received funding_signed for an inbound channel?".to_owned()));
}
let funding_txo_script = funding_redeemscript.to_v0_p2wsh();
let obscure_factor = get_commitment_transaction_number_obscure_factor(&self.get_holder_pubkeys().payment_point, &self.get_counterparty_pubkeys().payment_point, self.is_outbound());
let shutdown_script = self.shutdown_scriptpubkey.clone().map(|script| script.into_inner());
- let channel_monitor = ChannelMonitor::new(self.secp_ctx.clone(), self.holder_signer.clone(),
+ let mut monitor_signer = keys_source.derive_channel_signer(self.channel_value_satoshis, self.channel_keys_id);
+ monitor_signer.provide_channel_parameters(&self.channel_transaction_parameters);
+ let channel_monitor = ChannelMonitor::new(self.secp_ctx.clone(), monitor_signer,
shutdown_script, self.get_holder_selected_contest_delay(),
&self.destination_script, (funding_txo, funding_txo_script),
&self.channel_transaction_parameters,
}
self.channel_transaction_parameters.funding_outpoint = Some(funding_txo);
- self.holder_signer.ready_channel(&self.channel_transaction_parameters);
+ self.holder_signer.provide_channel_parameters(&self.channel_transaction_parameters);
let signature = match self.get_outbound_funding_created_signature(logger) {
Ok(res) => res,
}
}
-const SERIALIZATION_VERSION: u8 = 2;
+const SERIALIZATION_VERSION: u8 = 3;
const MIN_SERIALIZATION_VERSION: u8 = 2;
impl_writeable_tlv_based_enum!(InboundHTLCRemovalReason,;
// Note that we write out as if remove_uncommitted_htlcs_and_mark_paused had just been
// called.
- write_ver_prefix!(writer, SERIALIZATION_VERSION, MIN_SERIALIZATION_VERSION);
+ write_ver_prefix!(writer, MIN_SERIALIZATION_VERSION, MIN_SERIALIZATION_VERSION);
// `user_id` used to be a single u64 value. In order to remain backwards compatible with
// versions prior to 0.0.113, the u128 is serialized as two separate u64 values. We write
(21, self.outbound_scid_alias, required),
(23, channel_ready_event_emitted, option),
(25, user_id_high_opt, option),
+ (27, self.channel_keys_id, required),
});
Ok(())
let latest_monitor_update_id = Readable::read(reader)?;
- let keys_len: u32 = Readable::read(reader)?;
- let mut keys_data = Vec::with_capacity(cmp::min(keys_len as usize, MAX_ALLOC_SIZE));
- while keys_data.len() != keys_len as usize {
- // Read 1KB at a time to avoid accidentally allocating 4GB on corrupted channel keys
- let mut data = [0; 1024];
- let read_slice = &mut data[0..cmp::min(1024, keys_len as usize - keys_data.len())];
- reader.read_exact(read_slice)?;
- keys_data.extend_from_slice(read_slice);
+ let mut keys_data = None;
+ if ver <= 2 {
+ // Read the serialize signer bytes. We'll choose to deserialize them or not based on whether
+ // the `channel_keys_id` TLV is present below.
+ let keys_len: u32 = Readable::read(reader)?;
+ keys_data = Some(Vec::with_capacity(cmp::min(keys_len as usize, MAX_ALLOC_SIZE)));
+ while keys_data.as_ref().unwrap().len() != keys_len as usize {
+ // Read 1KB at a time to avoid accidentally allocating 4GB on corrupted channel keys
+ let mut data = [0; 1024];
+ let read_slice = &mut data[0..cmp::min(1024, keys_len as usize - keys_data.as_ref().unwrap().len())];
+ reader.read_exact(read_slice)?;
+ keys_data.as_mut().unwrap().extend_from_slice(read_slice);
+ }
}
- let holder_signer = keys_source.read_chan_signer(&keys_data)?;
// Read the old serialization for shutdown_pubkey, preferring the TLV field later if set.
let mut shutdown_scriptpubkey = match <PublicKey as Readable>::read(reader) {
let mut channel_ready_event_emitted = None;
let mut user_id_high_opt: Option<u64> = None;
+ let mut channel_keys_id: Option<[u8; 32]> = None;
read_tlv_fields!(reader, {
(0, announcement_sigs, option),
(21, outbound_scid_alias, option),
(23, channel_ready_event_emitted, option),
(25, user_id_high_opt, option),
+ (27, channel_keys_id, option),
});
+ let (channel_keys_id, holder_signer) = if let Some(channel_keys_id) = channel_keys_id {
+ let mut holder_signer = keys_source.derive_channel_signer(channel_value_satoshis, channel_keys_id);
+ // If we've gotten to the funding stage of the channel, populate the signer with its
+ // required channel parameters.
+ let non_shutdown_state = channel_state & (!MULTI_STATE_FLAGS);
+ if non_shutdown_state >= (ChannelState::FundingCreated as u32) {
+ holder_signer.provide_channel_parameters(&channel_parameters);
+ }
+ (channel_keys_id, holder_signer)
+ } else {
+ // `keys_data` can be `None` if we had corrupted data.
+ let keys_data = keys_data.ok_or(DecodeError::InvalidValue)?;
+ let holder_signer = keys_source.read_chan_signer(&keys_data)?;
+ (holder_signer.channel_keys_id(), holder_signer)
+ };
+
if let Some(preimages) = preimages_opt {
let mut iter = preimages.into_iter();
for htlc in pending_outbound_htlcs.iter_mut() {
historical_inbound_htlc_fulfills,
channel_type: channel_type.unwrap(),
+ channel_keys_id,
})
}
}
use crate::ln::chan_utils::{htlc_success_tx_weight, htlc_timeout_tx_weight};
use crate::chain::BestBlock;
use crate::chain::chaininterface::{FeeEstimator, LowerBoundedFeeEstimator, ConfirmationTarget};
- use crate::chain::keysinterface::{InMemorySigner, Recipient, KeyMaterial, KeysInterface};
+ use crate::chain::keysinterface::{BaseSign, InMemorySigner, Recipient, KeyMaterial, KeysInterface};
use crate::chain::transaction::OutPoint;
use crate::util::config::UserConfig;
use crate::util::enforcing_trait_impls::EnforcingSigner;
ShutdownScript::new_p2wpkh_from_pubkey(PublicKey::from_secret_key(&secp_ctx, &channel_close_key))
}
- fn get_channel_signer(&self, _inbound: bool, _channel_value_satoshis: u64) -> InMemorySigner {
+ fn generate_channel_keys_id(&self, _inbound: bool, _channel_value_satoshis: u64, _user_channel_id: u128) -> [u8; 32] {
+ self.signer.channel_keys_id()
+ }
+ fn derive_channel_signer(&self, _channel_value_satoshis: u64, _channel_keys_id: [u8; 32]) -> Self::Signer {
self.signer.clone()
}
fn get_secure_random_bytes(&self) -> [u8; 32] { [0; 32] }
}]};
let funding_outpoint = OutPoint{ txid: tx.txid(), index: 0 };
let funding_created_msg = node_a_chan.get_outbound_funding_created(tx.clone(), funding_outpoint, &&logger).unwrap();
- let (funding_signed_msg, _, _) = node_b_chan.funding_created(&funding_created_msg, best_block, &&logger).unwrap();
+ let (funding_signed_msg, _, _) = node_b_chan.funding_created(&funding_created_msg, best_block, &&keys_provider, &&logger).unwrap();
// Node B --> Node A: funding signed
- let _ = node_a_chan.funding_signed(&funding_signed_msg, best_block, &&logger);
+ let _ = node_a_chan.funding_signed(&funding_signed_msg, best_block, &&keys_provider, &&logger);
// Now disconnect the two nodes and check that the commitment point in
// Node B's channel_reestablish message is sane.
selected_contest_delay: 144
});
chan.channel_transaction_parameters.funding_outpoint = Some(funding_info);
- signer.ready_channel(&chan.channel_transaction_parameters);
+ signer.provide_channel_parameters(&chan.channel_transaction_parameters);
assert_eq!(counterparty_pubkeys.payment_point.serialize()[..],
hex::decode("032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991").unwrap()[..]);
projects / rust-lightning / blobdiff