where K::Target: KeysInterface<ChanKeySigner = ChanSigner>,
F::Target: FeeEstimator,
{
+ let our_to_self_delay = config.own_channel_config.our_to_self_delay;
let chan_keys = keys_provider.get_channel_keys(false, channel_value_satoshis);
if channel_value_satoshis >= MAX_FUNDING_SATOSHIS {
if push_msat > channel_value_msat {
return Err(APIError::APIMisuseError { err: format!("Push value ({}) was larger than channel_value ({})", push_msat, channel_value_msat) });
}
- if config.own_channel_config.our_to_self_delay < BREAKDOWN_TIMEOUT {
- return Err(APIError::APIMisuseError {err: format!("Configured with an unreasonable our_to_self_delay ({}) putting user funds at risks", config.own_channel_config.our_to_self_delay)});
+ if our_to_self_delay < BREAKDOWN_TIMEOUT {
+ return Err(APIError::APIMisuseError {err: format!("Configured with an unreasonable our_to_self_delay ({}) putting user funds at risks", our_to_self_delay)});
}
let background_feerate = fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Background);
if Channel::<ChanSigner>::get_remote_channel_reserve_satoshis(channel_value_satoshis) < Channel::<ChanSigner>::derive_our_dust_limit_satoshis(background_feerate) {
their_htlc_minimum_msat: 0,
our_htlc_minimum_msat: if config.own_channel_config.our_htlc_minimum_msat == 0 { 1 } else { config.own_channel_config.our_htlc_minimum_msat },
their_to_self_delay: 0,
- our_to_self_delay: config.own_channel_config.our_to_self_delay,
+ our_to_self_delay,
their_max_accepted_htlcs: 0,
minimum_depth: 0, // Filled in in accept_channel
delayed_payment_basepoint: msg.delayed_payment_basepoint,
htlc_basepoint: msg.htlc_basepoint
};
- chan_keys.set_remote_channel_pubkeys(&their_pubkeys);
+ chan_keys.on_accept(&their_pubkeys, msg.to_self_delay, config.own_channel_config.our_to_self_delay);
let mut local_config = (*config).channel_options.clone();
if config.own_channel_config.our_to_self_delay < BREAKDOWN_TIMEOUT {
Ok(chan)
}
- // Utilities to derive keys:
-
- fn build_local_commitment_secret(&self, idx: u64) -> SecretKey {
- let res = self.local_keys.commitment_secret(idx);
- SecretKey::from_slice(&res).unwrap()
- }
-
// Utilities to build transactions:
fn get_commitment_transaction_number_obscure_factor(&self) -> u64 {
/// The result is a transaction which we can revoke ownership of (ie a "local" transaction)
/// TODO Some magic rust shit to compile-time check this?
fn build_local_transaction_keys(&self, commitment_number: u64) -> Result<TxCreationKeys, ChannelError> {
- let per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(commitment_number));
+ let per_commitment_point = self.local_keys.get_per_commitment_point(commitment_number, &self.secp_ctx);
let delayed_payment_base = &self.local_keys.pubkeys().delayed_payment_basepoint;
let htlc_basepoint = &self.local_keys.pubkeys().htlc_basepoint;
let their_pubkeys = self.their_pubkeys.as_ref().unwrap();
htlc_basepoint: msg.htlc_basepoint
};
- self.local_keys.set_remote_channel_pubkeys(&their_pubkeys);
+ self.local_keys.on_accept(&their_pubkeys, msg.to_self_delay, self.our_to_self_delay);
self.their_pubkeys = Some(their_pubkeys);
self.their_cur_commitment_point = Some(msg.first_per_commitment_point);
let remote_keys = self.build_remote_transaction_keys()?;
let remote_initial_commitment_tx = self.build_commitment_transaction(self.cur_remote_commitment_transaction_number, &remote_keys, false, false, self.feerate_per_kw, logger).0;
- let remote_signature = self.local_keys.sign_remote_commitment(self.feerate_per_kw, &remote_initial_commitment_tx, &remote_keys, &Vec::new(), self.our_to_self_delay, &self.secp_ctx)
+ let remote_signature = self.local_keys.sign_remote_commitment(self.feerate_per_kw, &remote_initial_commitment_tx, &remote_keys, &Vec::new(), &self.secp_ctx)
.map_err(|_| ChannelError::Close("Failed to get signatures for new commitment_signed".to_owned()))?.0;
// We sign the "remote" commitment transaction, allowing them to broadcast the tx if they wish.
}
}
- let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(self.cur_local_commitment_transaction_number - 1));
- let per_commitment_secret = self.local_keys.commitment_secret(self.cur_local_commitment_transaction_number + 1);
+ let next_per_commitment_point = self.local_keys.get_per_commitment_point(self.cur_local_commitment_transaction_number - 1, &self.secp_ctx);
+ let per_commitment_secret = self.local_keys.release_commitment_secret(self.cur_local_commitment_transaction_number + 1);
// Update state now that we've passed all the can-fail calls...
let mut need_our_commitment = false;
let funding_locked = if self.monitor_pending_funding_locked {
assert!(!self.channel_outbound, "Funding transaction broadcast without FundingBroadcastSafe!");
self.monitor_pending_funding_locked = false;
- let next_per_commitment_secret = self.build_local_commitment_secret(self.cur_local_commitment_transaction_number);
- let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &next_per_commitment_secret);
+ let next_per_commitment_point = self.local_keys.get_per_commitment_point(self.cur_local_commitment_transaction_number, &self.secp_ctx);
Some(msgs::FundingLocked {
channel_id: self.channel_id(),
next_per_commitment_point: next_per_commitment_point,
}
fn get_last_revoke_and_ack(&self) -> msgs::RevokeAndACK {
- let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(self.cur_local_commitment_transaction_number));
- let per_commitment_secret = self.local_keys.commitment_secret(self.cur_local_commitment_transaction_number + 2);
+ let next_per_commitment_point = self.local_keys.get_per_commitment_point(self.cur_local_commitment_transaction_number, &self.secp_ctx);
+ let per_commitment_secret = self.local_keys.release_commitment_secret(self.cur_local_commitment_transaction_number + 2);
msgs::RevokeAndACK {
channel_id: self.channel_id,
per_commitment_secret,
if msg.next_remote_commitment_number > 0 {
match msg.data_loss_protect {
OptionalField::Present(ref data_loss) => {
- if self.local_keys.commitment_secret(INITIAL_COMMITMENT_NUMBER - msg.next_remote_commitment_number + 1) != data_loss.your_last_per_commitment_secret {
+ let expected_point = self.local_keys.get_per_commitment_point(INITIAL_COMMITMENT_NUMBER - msg.next_remote_commitment_number + 1, &self.secp_ctx);
+ let given_secret = SecretKey::from_slice(&data_loss.your_last_per_commitment_secret)
+ .map_err(|_| ChannelError::Close("Peer sent a garbage channel_reestablish with unparseable secret key".to_owned()))?;
+ if expected_point != PublicKey::from_secret_key(&self.secp_ctx, &given_secret) {
return Err(ChannelError::Close("Peer sent a garbage channel_reestablish with secret key not matching the commitment height provided".to_owned()));
}
if msg.next_remote_commitment_number > INITIAL_COMMITMENT_NUMBER - self.cur_local_commitment_transaction_number {
}
// We have OurFundingLocked set!
- let next_per_commitment_secret = self.build_local_commitment_secret(self.cur_local_commitment_transaction_number);
- let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &next_per_commitment_secret);
+ let next_per_commitment_point = self.local_keys.get_per_commitment_point(self.cur_local_commitment_transaction_number, &self.secp_ctx);
return Ok((Some(msgs::FundingLocked {
channel_id: self.channel_id(),
next_per_commitment_point: next_per_commitment_point,
let resend_funding_locked = if msg.next_local_commitment_number == 1 && INITIAL_COMMITMENT_NUMBER - self.cur_local_commitment_transaction_number == 1 {
// We should never have to worry about MonitorUpdateFailed resending FundingLocked
- let next_per_commitment_secret = self.build_local_commitment_secret(self.cur_local_commitment_transaction_number);
- let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &next_per_commitment_secret);
+ let next_per_commitment_point = self.local_keys.get_per_commitment_point(self.cur_local_commitment_transaction_number, &self.secp_ctx);
Some(msgs::FundingLocked {
channel_id: self.channel_id(),
next_per_commitment_point: next_per_commitment_point,
//a protocol oversight, but I assume I'm just missing something.
if need_commitment_update {
if self.channel_state & (ChannelState::MonitorUpdateFailed as u32) == 0 {
- let next_per_commitment_secret = self.build_local_commitment_secret(self.cur_local_commitment_transaction_number);
- let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &next_per_commitment_secret);
+ let next_per_commitment_point = self.local_keys.get_per_commitment_point(self.cur_local_commitment_transaction_number, &self.secp_ctx);
return Ok((Some(msgs::FundingLocked {
channel_id: self.channel_id,
next_per_commitment_point: next_per_commitment_point,
panic!("Tried to send an open_channel for a channel that has already advanced");
}
- let local_commitment_secret = self.build_local_commitment_secret(self.cur_local_commitment_transaction_number);
+ let first_per_commitment_point = self.local_keys.get_per_commitment_point(self.cur_local_commitment_transaction_number, &self.secp_ctx);
let local_keys = self.local_keys.pubkeys();
msgs::OpenChannel {
payment_point: local_keys.payment_point,
delayed_payment_basepoint: local_keys.delayed_payment_basepoint,
htlc_basepoint: local_keys.htlc_basepoint,
- first_per_commitment_point: PublicKey::from_secret_key(&self.secp_ctx, &local_commitment_secret),
+ first_per_commitment_point,
channel_flags: if self.config.announced_channel {1} else {0},
shutdown_scriptpubkey: OptionalField::Present(if self.config.commit_upfront_shutdown_pubkey { self.get_closing_scriptpubkey() } else { Builder::new().into_script() })
}
panic!("Tried to send an accept_channel for a channel that has already advanced");
}
- let local_commitment_secret = self.build_local_commitment_secret(self.cur_local_commitment_transaction_number);
+ let first_per_commitment_point = self.local_keys.get_per_commitment_point(self.cur_local_commitment_transaction_number, &self.secp_ctx);
let local_keys = self.local_keys.pubkeys();
msgs::AcceptChannel {
payment_point: local_keys.payment_point,
delayed_payment_basepoint: local_keys.delayed_payment_basepoint,
htlc_basepoint: local_keys.htlc_basepoint,
- first_per_commitment_point: PublicKey::from_secret_key(&self.secp_ctx, &local_commitment_secret),
+ first_per_commitment_point,
shutdown_scriptpubkey: OptionalField::Present(if self.config.commit_upfront_shutdown_pubkey { self.get_closing_scriptpubkey() } else { Builder::new().into_script() })
}
}
fn get_outbound_funding_created_signature<L: Deref>(&mut self, logger: &L) -> Result<Signature, ChannelError> where L::Target: Logger {
let remote_keys = self.build_remote_transaction_keys()?;
let remote_initial_commitment_tx = self.build_commitment_transaction(self.cur_remote_commitment_transaction_number, &remote_keys, false, false, self.feerate_per_kw, logger).0;
- Ok(self.local_keys.sign_remote_commitment(self.feerate_per_kw, &remote_initial_commitment_tx, &remote_keys, &Vec::new(), self.our_to_self_delay, &self.secp_ctx)
+ Ok(self.local_keys.sign_remote_commitment(self.feerate_per_kw, &remote_initial_commitment_tx, &remote_keys, &Vec::new(), &self.secp_ctx)
.map_err(|_| ChannelError::Close("Failed to get signatures for new commitment_signed".to_owned()))?.0)
}
htlcs.push(htlc);
}
- let res = self.local_keys.sign_remote_commitment(feerate_per_kw, &remote_commitment_tx.0, &remote_keys, &htlcs, self.our_to_self_delay, &self.secp_ctx)
+ let res = self.local_keys.sign_remote_commitment(feerate_per_kw, &remote_commitment_tx.0, &remote_keys, &htlcs, &self.secp_ctx)
.map_err(|_| ChannelError::Close("Failed to get signatures for new commitment_signed".to_owned()))?;
signature = res.0;
htlc_signatures = res.1;
delayed_payment_basepoint: public_from_secret_hex(&secp_ctx, "1552dfba4f6cf29a62a0af13c8d6981d36d0ef8d61ba10fb0fe90da7634d7e13"),
htlc_basepoint: public_from_secret_hex(&secp_ctx, "4444444444444444444444444444444444444444444444444444444444444444")
};
- chan_keys.set_remote_channel_pubkeys(&their_pubkeys);
+ chan_keys.on_accept(&their_pubkeys, chan.their_to_self_delay, chan.our_to_self_delay);
assert_eq!(their_pubkeys.payment_point.serialize()[..],
hex::decode("032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991").unwrap()[..]);
assert_eq!(serialize(&localtx.add_local_sig(&redeemscript, local_sig))[..],
hex::decode($tx_hex).unwrap()[..]);
- let htlc_sigs = chan_keys.sign_local_commitment_htlc_transactions(&localtx, chan.their_to_self_delay, &chan.secp_ctx).unwrap();
+ let htlc_sigs = chan_keys.sign_local_commitment_htlc_transactions(&localtx, &chan.secp_ctx).unwrap();
let mut htlc_sig_iter = localtx.per_htlc.iter().zip(htlc_sigs.iter().enumerate());
$({
projects / rust-lightning / blobdiff