1 use bitcoin::blockdata::block::BlockHeader;
2 use bitcoin::blockdata::script::{Script,Builder};
3 use bitcoin::blockdata::transaction::{TxIn, TxOut, Transaction, SigHashType};
4 use bitcoin::blockdata::opcodes;
5 use bitcoin::util::uint::Uint256;
6 use bitcoin::util::hash::{Sha256dHash, Hash160};
7 use bitcoin::util::bip143;
8 use bitcoin::network::serialize::BitcoinHash;
10 use secp256k1::key::{PublicKey,SecretKey};
11 use secp256k1::{Secp256k1,Message,Signature};
14 use crypto::digest::Digest;
15 use crypto::hkdf::{hkdf_extract,hkdf_expand};
18 use ln::msgs::{HandleError, MsgEncodable};
19 use ln::channelmonitor::ChannelMonitor;
20 use ln::channelmanager::PendingForwardHTLCInfo;
21 use ln::chan_utils::{TxCreationKeys,HTLCOutputInCommitment};
23 use chain::chaininterface::{FeeEstimator,ConfirmationTarget};
24 use util::{transaction_utils,rng};
25 use util::sha2::Sha256;
27 use std::default::Default;
29 use std::time::Instant;
31 pub struct ChannelKeys {
32 pub funding_key: SecretKey,
33 pub revocation_base_key: SecretKey,
34 pub payment_base_key: SecretKey,
35 pub delayed_payment_base_key: SecretKey,
36 pub htlc_base_key: SecretKey,
37 pub channel_close_key: SecretKey,
38 pub channel_monitor_claim_key: SecretKey,
39 pub commitment_seed: [u8; 32],
43 pub fn new_from_seed(seed: &[u8; 32]) -> Result<ChannelKeys, secp256k1::Error> {
44 let mut prk = [0; 32];
45 hkdf_extract(Sha256::new(), b"rust-lightning key gen salt", seed, &mut prk);
46 let secp_ctx = Secp256k1::new();
48 let mut okm = [0; 32];
49 hkdf_expand(Sha256::new(), &prk, b"rust-lightning funding key info", &mut okm);
50 let funding_key = SecretKey::from_slice(&secp_ctx, &okm)?;
52 hkdf_expand(Sha256::new(), &prk, b"rust-lightning revocation base key info", &mut okm);
53 let revocation_base_key = SecretKey::from_slice(&secp_ctx, &okm)?;
55 hkdf_expand(Sha256::new(), &prk, b"rust-lightning payment base key info", &mut okm);
56 let payment_base_key = SecretKey::from_slice(&secp_ctx, &okm)?;
58 hkdf_expand(Sha256::new(), &prk, b"rust-lightning delayed payment base key info", &mut okm);
59 let delayed_payment_base_key = SecretKey::from_slice(&secp_ctx, &okm)?;
61 hkdf_expand(Sha256::new(), &prk, b"rust-lightning htlc base key info", &mut okm);
62 let htlc_base_key = SecretKey::from_slice(&secp_ctx, &okm)?;
64 hkdf_expand(Sha256::new(), &prk, b"rust-lightning channel close key info", &mut okm);
65 let channel_close_key = SecretKey::from_slice(&secp_ctx, &okm)?;
67 hkdf_expand(Sha256::new(), &prk, b"rust-lightning channel monitor claim key info", &mut okm);
68 let channel_monitor_claim_key = SecretKey::from_slice(&secp_ctx, &okm)?;
70 hkdf_expand(Sha256::new(), &prk, b"rust-lightning local commitment seed info", &mut okm);
73 funding_key: funding_key,
74 revocation_base_key: revocation_base_key,
75 payment_base_key: payment_base_key,
76 delayed_payment_base_key: delayed_payment_base_key,
77 htlc_base_key: htlc_base_key,
78 channel_close_key: channel_close_key,
79 channel_monitor_claim_key: channel_monitor_claim_key,
93 outbound: bool, // ie to an HTLC-Timeout transaction
97 payment_hash: [u8; 32],
99 // state == RemoteAnnounced implies pending_forward_state, otherwise it must be None
100 pending_forward_state: Option<PendingForwardHTLCInfo>,
104 fn get_in_commitment(&self, offered: bool) -> HTLCOutputInCommitment {
105 HTLCOutputInCommitment {
107 amount_msat: self.amount_msat,
108 cltv_expiry: self.cltv_expiry,
109 payment_hash: self.payment_hash,
110 transaction_output_index: 0
115 /// See AwaitingRemoteRevoke ChannelState for more info
116 struct HTLCOutputAwaitingACK {
120 payment_hash: [u8; 32],
121 onion_routing_packet: msgs::OnionPacket,
122 time_created: Instant, //TODO: Some kind of timeout thing-a-majig
126 /// Implies we have (or are prepared to) send our open_channel/accept_channel message
127 OurInitSent = (1 << 0),
128 /// Implies we have received their open_channel/accept_channel message
129 TheirInitSent = (1 << 1),
130 /// We have sent funding_created and are awaiting a funding_signed to advance to FundingSent.
131 /// Note that this is nonsense for an inbound channel as we immediately generate funding_signed
132 /// upon receipt of funding_created, so simply skip this state.
134 /// Set when we have received/sent funding_created and funding_signed and are thus now waiting
135 /// on the funding transaction to confirm. The FundingLocked flags are set to indicate when we
136 /// and our counterparty consider the funding transaction confirmed.
138 /// Flag which can be set on FundingSent to indicate they sent us a funding_locked message.
139 /// Once both TheirFundingLocked and OurFundingLocked are set, state moves on to ChannelFunded.
140 TheirFundingLocked = (1 << 4),
141 /// Flag which can be set on FundingSent to indicate we sent them a funding_locked message.
142 /// Once both TheirFundingLocked and OurFundingLocked are set, state moves on to ChannelFunded.
143 OurFundingLocked = (1 << 5),
145 /// Flag which implies that we have sent a commitment_signed but are awaiting the responding
146 /// revoke_and_ack message. During this time period, we can't generate new commitment_signed
147 /// messages as then we will be unable to determine which HTLCs they included in their
148 /// revoke_and_ack implicit ACK, so instead we have to hold them away temporarily to be sent
150 /// Flag is set on ChannelFunded.
151 AwaitingRemoteRevoke = (1 << 7),
154 // TODO: We should refactor this to be an Inbound/OutboundChannel until initial setup handshaking
155 // has been completed, and then turn into a Channel to get compiler-time enforcement of things like
156 // calling get_channel_id() before we're set up or things like get_outbound_funding_signed on an
163 channel_outbound: bool,
165 announce_publicly: bool,
166 channel_value_satoshis: u64,
168 local_keys: ChannelKeys,
170 cur_local_commitment_transaction_number: u64,
171 cur_remote_commitment_transaction_number: u64,
172 value_to_self_msat: u64, // Excluding all pending_htlcs, excluding fees
173 pending_htlcs: Vec<HTLCOutput>,
174 holding_cell_htlcs: Vec<HTLCOutputAwaitingACK>,
175 next_local_htlc_id: u64,
176 next_remote_htlc_id: u64,
177 channel_update_count: u32,
180 /// The hash of the block in which the funding transaction reached our CONF_TARGET. We use this
181 /// to detect unconfirmation after a serialize-unserialize roudtrip where we may not see a full
182 /// series of block_connected/block_disconnected calls. Obviously this is not a guarantee as we
183 /// could miss the funding_tx_confirmed_in block as well, but it serves as a useful fallback.
184 funding_tx_confirmed_in: Sha256dHash,
185 short_channel_id: Option<u64>,
186 /// Used to deduplicate block_connected callbacks
187 last_block_connected: Sha256dHash,
188 funding_tx_confirmations: u64,
190 their_dust_limit_satoshis: u64,
191 our_dust_limit_satoshis: u64,
192 their_max_htlc_value_in_flight_msat: u64,
193 //get_our_max_htlc_value_in_flight_msat(): u64,
194 their_channel_reserve_satoshis: u64,
195 //get_our_channel_reserve_satoshis(): u64,
196 their_htlc_minimum_msat: u64,
197 our_htlc_minimum_msat: u64,
198 their_to_self_delay: u16,
199 //implied by BREAKDOWN_TIMEOUT: our_to_self_delay: u16,
200 their_max_accepted_htlcs: u16,
201 //implied by OUR_MAX_HTLCS: our_max_accepted_htlcs: u16,
203 their_funding_pubkey: PublicKey,
204 their_revocation_basepoint: PublicKey,
205 their_payment_basepoint: PublicKey,
206 their_delayed_payment_basepoint: PublicKey,
207 their_htlc_basepoint: PublicKey,
208 their_cur_commitment_point: PublicKey,
209 their_node_id: PublicKey,
211 channel_monitor: ChannelMonitor,
214 const OUR_MAX_HTLCS: u16 = 1; //TODO
215 const CONF_TARGET: u32 = 12; //TODO: Should be much higher
216 /// Confirmation count threshold at which we close a channel. Ideally we'd keep the channel around
217 /// on ice until the funding transaction gets more confirmations, but the LN protocol doesn't
218 /// really allow for this, so instead we're stuck closing it out at that point.
219 const UNCONF_THRESHOLD: u32 = 6;
220 /// The amount of time we require our counterparty wait to claim their money (ie time between when
221 /// we, or our watchtower, must check for them having broadcast a theft transaction).
222 const BREAKDOWN_TIMEOUT: u16 = 6 * 24 * 7; //TODO?
223 /// The amount of time we're willing to wait to claim money back to us
224 const MAX_LOCAL_BREAKDOWN_TIMEOUT: u16 = 6 * 24 * 14;
225 const COMMITMENT_TX_BASE_WEIGHT: u64 = 724;
226 const COMMITMENT_TX_WEIGHT_PER_HTLC: u64 = 172;
227 const HTLC_SUCCESS_TX_WEIGHT: u64 = 703;
228 const HTLC_TIMEOUT_TX_WEIGHT: u64 = 663;
229 const SPENDING_INPUT_FOR_A_OUTPUT_WEIGHT: u64 = 79; // prevout: 36, nSequence: 4, script len: 1, witness lengths: (3+1)/4, sig: 73/4, if-selector: 1, redeemScript: (6 ops + 2*33 pubkeys + 1*2 delay)/4
230 const B_OUTPUT_PLUS_SPENDING_INPUT_WEIGHT: u64 = 104; // prevout: 40, nSequence: 4, script len: 1, witness lengths: 3/4, sig: 73/4, pubkey: 33/4, output: 31 (TODO: Wrong? Useless?)
232 macro_rules! secp_call {
236 //TODO: make the error a parameter
237 Err(_) => return Err(HandleError{err: "Secp call failed - probably bad signature or evil data generated a bad pubkey/privkey", msg: None})
242 macro_rules! get_key {
243 ( $ctx : expr, $slice : expr ) => {
244 secp_call! (SecretKey::from_slice($ctx, $slice))
249 // Convert constants + channel value to limits:
250 fn get_our_max_htlc_value_in_flight_msat(channel_value_satoshis: u64) -> u64 {
251 channel_value_satoshis * 1000 / 10 //TODO
254 /// Guaranteed to return a value no larger than channel_value_satoshis
255 fn get_our_channel_reserve_satoshis(channel_value_satoshis: u64) -> u64 {
256 cmp::min(channel_value_satoshis, 10) //TODO
259 fn derive_our_dust_limit_satoshis(at_open_background_feerate: u64) -> u64 {
260 at_open_background_feerate * B_OUTPUT_PLUS_SPENDING_INPUT_WEIGHT //TODO
263 fn derive_our_htlc_minimum_msat(_at_open_channel_feerate_per_kw: u64) -> u64 {
269 /// panics if channel_value_satoshis is >= (1 << 24)
270 pub fn new_outbound(fee_estimator: &FeeEstimator, their_node_id: PublicKey, channel_value_satoshis: u64, announce_publicly: bool, user_id: u64) -> Channel {
271 if channel_value_satoshis >= (1 << 24) {
272 panic!("funding value > 2^24");
275 let feerate = fee_estimator.get_est_sat_per_vbyte(ConfirmationTarget::Normal);
276 let background_feerate = fee_estimator.get_est_sat_per_vbyte(ConfirmationTarget::Background);
278 let mut key_seed = [0u8; 32];
279 rng::fill_bytes(&mut key_seed);
280 let chan_keys = match ChannelKeys::new_from_seed(&key_seed) {
282 Err(_) => panic!("RNG is busted!")
285 let secp_ctx = Secp256k1::new();
286 let our_channel_monitor_claim_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&secp_ctx, &chan_keys.channel_monitor_claim_key).unwrap().serialize());
287 let our_channel_monitor_claim_script = Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script();
288 let channel_monitor = ChannelMonitor::new(&chan_keys.revocation_base_key,
289 &PublicKey::from_secret_key(&secp_ctx, &chan_keys.delayed_payment_base_key).unwrap(),
290 &PublicKey::from_secret_key(&secp_ctx, &chan_keys.htlc_base_key).unwrap(),
291 BREAKDOWN_TIMEOUT, our_channel_monitor_claim_script);
296 channel_id: rng::rand_uint256(),
297 channel_state: ChannelState::OurInitSent as u32,
298 channel_outbound: true,
300 announce_publicly: announce_publicly,
301 channel_value_satoshis: channel_value_satoshis,
303 local_keys: chan_keys,
304 cur_local_commitment_transaction_number: (1 << 48) - 1,
305 cur_remote_commitment_transaction_number: (1 << 48) - 1,
306 value_to_self_msat: channel_value_satoshis * 1000, //TODO: give them something on open? Parameterize it?
307 pending_htlcs: Vec::new(),
308 holding_cell_htlcs: Vec::new(),
309 next_local_htlc_id: 0,
310 next_remote_htlc_id: 0,
311 channel_update_count: 0,
313 funding_tx_confirmed_in: Default::default(),
314 short_channel_id: None,
315 last_block_connected: Default::default(),
316 funding_tx_confirmations: 0,
318 feerate_per_kw: feerate * 250,
319 their_dust_limit_satoshis: 0,
320 our_dust_limit_satoshis: Channel::derive_our_dust_limit_satoshis(background_feerate),
321 their_max_htlc_value_in_flight_msat: 0,
322 their_channel_reserve_satoshis: 0,
323 their_htlc_minimum_msat: 0,
324 our_htlc_minimum_msat: Channel::derive_our_htlc_minimum_msat(feerate * 250),
325 their_to_self_delay: 0,
326 their_max_accepted_htlcs: 0,
328 their_funding_pubkey: PublicKey::new(),
329 their_revocation_basepoint: PublicKey::new(),
330 their_payment_basepoint: PublicKey::new(),
331 their_delayed_payment_basepoint: PublicKey::new(),
332 their_htlc_basepoint: PublicKey::new(),
333 their_cur_commitment_point: PublicKey::new(),
334 their_node_id: their_node_id,
336 channel_monitor: channel_monitor,
340 fn check_remote_fee(fee_estimator: &FeeEstimator, feerate_per_kw: u32) -> Result<(), HandleError> {
341 if (feerate_per_kw as u64) < fee_estimator.get_est_sat_per_vbyte(ConfirmationTarget::Background) * 250 {
342 return Err(HandleError{err: "Peer's feerate much too low", msg: None});
344 if (feerate_per_kw as u64) > fee_estimator.get_est_sat_per_vbyte(ConfirmationTarget::HighPriority) * 375 { // 375 = 250 * 1.5x
345 return Err(HandleError{err: "Peer's feerate much too high", msg: None});
350 /// Creates a new channel from a remote sides' request for one.
351 /// Assumes chain_hash has already been checked and corresponds with what we expect!
352 pub fn new_from_req(fee_estimator: &FeeEstimator, their_node_id: PublicKey, msg: &msgs::OpenChannel, user_id: u64, announce_publicly: bool) -> Result<Channel, HandleError> {
353 // Check sanity of message fields:
354 if msg.funding_satoshis >= (1 << 24) {
355 return Err(HandleError{err: "funding value > 2^24", msg: None});
357 if msg.funding_satoshis > 21000000 * 100000000 {
358 return Err(HandleError{err: "More funding_satoshis than there are satoshis!", msg: None});
360 if msg.channel_reserve_satoshis > msg.funding_satoshis {
361 return Err(HandleError{err: "Bogus channel_reserve_satoshis", msg: None});
363 if msg.push_msat > (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000 {
364 return Err(HandleError{err: "push_msat more than highest possible value", msg: None});
366 if msg.dust_limit_satoshis > 21000000 * 100000000 {
367 return Err(HandleError{err: "Peer never wants payout outputs?", msg: None});
369 if msg.max_htlc_value_in_flight_msat > msg.funding_satoshis * 1000 {
370 return Err(HandleError{err: "Bogus max_htlc_value_in_flight_satoshis", msg: None});
372 if msg.htlc_minimum_msat >= (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000 {
373 return Err(HandleError{err: "Minimum htlc value is full channel value", msg: None});
375 Channel::check_remote_fee(fee_estimator, msg.feerate_per_kw)?;
376 if msg.to_self_delay > MAX_LOCAL_BREAKDOWN_TIMEOUT {
377 return Err(HandleError{err: "They wanted our payments to be delayed by a needlessly long period", msg: None});
379 if msg.max_accepted_htlcs < 1 {
380 return Err(HandleError{err: "0 max_accpted_htlcs makes for a useless channel", msg: None});
382 if (msg.channel_flags & 254) != 0 {
383 return Err(HandleError{err: "unknown channel_flags", msg: None});
386 // Convert things into internal flags and prep our state:
388 let their_announce = if (msg.channel_flags & 1) == 1 { true } else { false };
390 let background_feerate = fee_estimator.get_est_sat_per_vbyte(ConfirmationTarget::Background);
392 let mut key_seed = [0u8; 32];
393 rng::fill_bytes(&mut key_seed);
394 let chan_keys = match ChannelKeys::new_from_seed(&key_seed) {
396 Err(_) => panic!("RNG is busted!")
399 let secp_ctx = Secp256k1::new();
400 let our_channel_monitor_claim_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&secp_ctx, &chan_keys.channel_monitor_claim_key).unwrap().serialize());
401 let our_channel_monitor_claim_script = Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script();
402 let mut channel_monitor = ChannelMonitor::new(&chan_keys.revocation_base_key,
403 &PublicKey::from_secret_key(&secp_ctx, &chan_keys.delayed_payment_base_key).unwrap(),
404 &PublicKey::from_secret_key(&secp_ctx, &chan_keys.htlc_base_key).unwrap(),
405 BREAKDOWN_TIMEOUT, our_channel_monitor_claim_script);
406 channel_monitor.set_their_htlc_base_key(&msg.htlc_basepoint);
408 let mut chan = Channel {
411 channel_id: msg.temporary_channel_id,
412 channel_state: (ChannelState::OurInitSent as u32) | (ChannelState::TheirInitSent as u32),
413 channel_outbound: false,
415 announce_publicly: their_announce && announce_publicly,
417 local_keys: chan_keys,
418 cur_local_commitment_transaction_number: (1 << 48) - 1,
419 cur_remote_commitment_transaction_number: (1 << 48) - 1,
420 value_to_self_msat: msg.push_msat,
421 pending_htlcs: Vec::new(),
422 holding_cell_htlcs: Vec::new(),
423 next_local_htlc_id: 0,
424 next_remote_htlc_id: 0,
425 channel_update_count: 0,
427 funding_tx_confirmed_in: Default::default(),
428 short_channel_id: None,
429 last_block_connected: Default::default(),
430 funding_tx_confirmations: 0,
432 feerate_per_kw: msg.feerate_per_kw as u64,
433 channel_value_satoshis: msg.funding_satoshis,
434 their_dust_limit_satoshis: msg.dust_limit_satoshis,
435 our_dust_limit_satoshis: Channel::derive_our_dust_limit_satoshis(background_feerate),
436 their_max_htlc_value_in_flight_msat: msg.max_htlc_value_in_flight_msat,
437 their_channel_reserve_satoshis: msg.channel_reserve_satoshis,
438 their_htlc_minimum_msat: msg.htlc_minimum_msat,
439 our_htlc_minimum_msat: Channel::derive_our_htlc_minimum_msat(msg.feerate_per_kw as u64),
440 their_to_self_delay: msg.to_self_delay,
441 their_max_accepted_htlcs: msg.max_accepted_htlcs,
443 their_funding_pubkey: msg.funding_pubkey,
444 their_revocation_basepoint: msg.revocation_basepoint,
445 their_payment_basepoint: msg.payment_basepoint,
446 their_delayed_payment_basepoint: msg.delayed_payment_basepoint,
447 their_htlc_basepoint: msg.htlc_basepoint,
448 their_cur_commitment_point: msg.first_per_commitment_point,
449 their_node_id: their_node_id,
451 channel_monitor: channel_monitor,
454 let obscure_factor = chan.get_commitment_transaction_number_obscure_factor();
455 chan.channel_monitor.set_commitment_obscure_factor(obscure_factor);
460 // Utilities to derive keys:
462 fn build_local_commitment_secret(&self, idx: u64) -> Result<SecretKey, HandleError> {
463 let res = chan_utils::build_commitment_secret(self.local_keys.commitment_seed, idx);
464 Ok(get_key!(&self.secp_ctx, &res))
467 // Utilities to build transactions:
469 fn get_commitment_transaction_number_obscure_factor(&self) -> u64 {
470 let mut sha = Sha256::new();
471 let our_payment_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key).unwrap();
473 if self.channel_outbound {
474 sha.input(&our_payment_basepoint.serialize());
475 sha.input(&self.their_payment_basepoint.serialize());
477 sha.input(&self.their_payment_basepoint.serialize());
478 sha.input(&our_payment_basepoint.serialize());
480 let mut res = [0; 32];
481 sha.result(&mut res);
483 ((res[26] as u64) << 5*8) |
484 ((res[27] as u64) << 4*8) |
485 ((res[28] as u64) << 3*8) |
486 ((res[29] as u64) << 2*8) |
487 ((res[30] as u64) << 1*8) |
488 ((res[31] as u64) << 0*8)
491 /// Transaction nomenclature is somewhat confusing here as there are many different cases - a
492 /// transaction is referred to as "a's transaction" implying that a will be able to broadcast
493 /// the transaction. Thus, b will generally be sending a signature over such a transaction to
494 /// a, and a can revoke the transaction by providing b the relevant per_commitment_secret. As
495 /// such, a transaction is generally the result of b increasing the amount paid to a (or adding
497 /// @local is used only to convert relevant internal structures which refer to remote vs local
498 /// to decide value of outputs and direction of HTLCs.
499 /// @generated_by_local is used to determine *which* HTLCs to include - noting that the HTLC
500 /// state may indicate that one peer has informed the other that they'd like to add an HTLC but
501 /// have not yet committed it. Such HTLCs will only be included in transactions which are being
502 /// generated by the peer which proposed adding the HTLCs, and thus we need to understand both
503 /// which peer generated this transaction and "to whom" this transaction flows.
505 fn build_commitment_transaction(&self, commitment_number: u64, keys: &TxCreationKeys, local: bool, generated_by_local: bool) -> Result<(Transaction, Vec<HTLCOutputInCommitment>), HandleError> {
506 let obscured_commitment_transaction_number = self.get_commitment_transaction_number_obscure_factor() ^ commitment_number;
509 let mut ins: Vec<TxIn> = Vec::new();
511 prev_hash: self.channel_monitor.get_funding_txo().unwrap().0,
512 prev_index: self.channel_monitor.get_funding_txo().unwrap().1 as u32,
513 script_sig: Script::new(),
514 sequence: ((0x80 as u32) << 8*3) | ((obscured_commitment_transaction_number >> 3*8) as u32)
518 let mut witness: Vec<Vec<Vec<u8>>> = Vec::new();
519 witness.push(Vec::new());
521 let mut txouts: Vec<(TxOut, Option<HTLCOutputInCommitment>)> = Vec::new();
523 let dust_limit_satoshis = if local { self.our_dust_limit_satoshis } else { self.their_dust_limit_satoshis };
524 let mut remote_htlc_total_msat = 0;
525 let mut local_htlc_total_msat = 0;
527 for ref htlc in self.pending_htlcs.iter() {
528 if htlc.state == HTLCState::Committed || htlc.state == (if generated_by_local { HTLCState::LocalAnnounced } else { HTLCState::RemoteAnnounced }) {
529 if htlc.outbound == local { // "offered HTLC output"
530 if htlc.amount_msat / 1000 >= dust_limit_satoshis + (self.feerate_per_kw * HTLC_TIMEOUT_TX_WEIGHT / 1000) {
531 let htlc_in_tx = htlc.get_in_commitment(true);
533 script_pubkey: chan_utils::get_htlc_redeemscript(&htlc_in_tx, &keys, true).to_v0_p2wsh(),
534 value: htlc.amount_msat / 1000
535 }, Some(htlc_in_tx)));
538 if htlc.amount_msat / 1000 >= dust_limit_satoshis + (self.feerate_per_kw * HTLC_SUCCESS_TX_WEIGHT / 1000) {
539 let htlc_in_tx = htlc.get_in_commitment(false);
540 txouts.push((TxOut { // "received HTLC output"
541 script_pubkey: chan_utils::get_htlc_redeemscript(&htlc_in_tx, &keys, false).to_v0_p2wsh(),
542 value: htlc.amount_msat / 1000
543 }, Some(htlc_in_tx)));
547 local_htlc_total_msat += htlc.amount_msat;
549 remote_htlc_total_msat += htlc.amount_msat;
554 let total_fee: u64 = self.feerate_per_kw * (COMMITMENT_TX_BASE_WEIGHT + (txouts.len() as u64) * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000;
555 let value_to_self: i64 = ((self.value_to_self_msat - local_htlc_total_msat) as i64) / 1000 - if self.channel_outbound { total_fee as i64 } else { 0 };
556 let value_to_remote: i64 = (((self.channel_value_satoshis * 1000 - self.value_to_self_msat - remote_htlc_total_msat) / 1000) as i64) - if self.channel_outbound { 0 } else { total_fee as i64 };
558 let value_to_a = if local { value_to_self } else { value_to_remote };
559 let value_to_b = if local { value_to_remote } else { value_to_self };
561 if value_to_a >= (dust_limit_satoshis as i64) {
563 script_pubkey: chan_utils::get_revokeable_redeemscript(&keys.revocation_key,
564 if local { self.their_to_self_delay } else { BREAKDOWN_TIMEOUT },
565 &keys.a_delayed_payment_key).to_v0_p2wsh(),
566 value: value_to_a as u64
570 if value_to_b >= (dust_limit_satoshis as i64) {
572 script_pubkey: Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0)
573 .push_slice(&Hash160::from_data(&keys.b_payment_key.serialize())[..])
575 value: value_to_b as u64
579 transaction_utils::sort_outputs(&mut txouts);
581 let mut outputs: Vec<TxOut> = Vec::new();
582 let mut htlcs_used: Vec<HTLCOutputInCommitment> = Vec::new();
583 for (idx, out) in txouts.drain(..).enumerate() {
587 htlcs_used.push(out_htlc);
588 htlcs_used.last_mut().unwrap().transaction_output_index = idx as u32;
596 lock_time: ((0x20 as u32) << 8*3) | ((obscured_commitment_transaction_number & 0xffffffu64) as u32),
604 /// Creates a set of keys for build_commitment_transaction to generate a transaction which our
605 /// counterparty will sign (ie DO NOT send signatures over a transaction created by this to
606 /// our counterparty!)
607 /// The result is a transaction which we can revoke ownership of (ie a "local" transaction)
608 /// TODO Some magic rust shit to compile-time check this?
609 fn build_local_transaction_keys(&self, commitment_number: u64) -> Result<TxCreationKeys, HandleError> {
610 let per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(commitment_number)?).unwrap();
611 let delayed_payment_base = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key).unwrap();
612 let htlc_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key).unwrap();
614 Ok(secp_call!(TxCreationKeys::new(&self.secp_ctx, &per_commitment_point, &delayed_payment_base, &htlc_basepoint, &self.their_revocation_basepoint, &self.their_payment_basepoint, &self.their_htlc_basepoint)))
618 /// Creates a set of keys for build_commitment_transaction to generate a transaction which we
619 /// will sign and send to our counterparty.
620 fn build_remote_transaction_keys(&self) -> Result<TxCreationKeys, HandleError> {
621 //TODO: Ensure that the payment_key derived here ends up in the library users' wallet as we
622 //may see payments to it!
623 let payment_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key).unwrap();
624 let revocation_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key).unwrap();
625 let htlc_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key).unwrap();
627 Ok(secp_call!(TxCreationKeys::new(&self.secp_ctx, &self.their_cur_commitment_point, &self.their_delayed_payment_basepoint, &self.their_htlc_basepoint, &revocation_basepoint, &payment_basepoint, &htlc_basepoint)))
630 /// Gets the redeemscript for the funding transaction output (ie the funding transaction output
631 /// pays to get_funding_redeemscript().to_v0_p2wsh()).
632 pub fn get_funding_redeemscript(&self) -> Script {
633 let builder = Builder::new().push_opcode(opcodes::All::OP_PUSHNUM_2);
634 let our_funding_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap().serialize();
635 let their_funding_key = self.their_funding_pubkey.serialize();
636 if our_funding_key[..] < their_funding_key[..] {
637 builder.push_slice(&our_funding_key)
638 .push_slice(&their_funding_key)
640 builder.push_slice(&their_funding_key)
641 .push_slice(&our_funding_key)
642 }.push_opcode(opcodes::All::OP_PUSHNUM_2).push_opcode(opcodes::All::OP_CHECKMULTISIG).into_script()
645 fn sign_commitment_transaction(&self, tx: &mut Transaction, their_sig: &Signature) -> Result<(), HandleError> {
646 if tx.input.len() != 1 {
647 panic!("Tried to sign commitment transaction that had input count != 1!");
649 if tx.witness.len() != 1 || tx.witness[0].len() != 0 {
650 panic!("Tried to re-sign commitment transaction");
653 let funding_redeemscript = self.get_funding_redeemscript();
655 let sighash = secp_call!(Message::from_slice(&bip143::SighashComponents::new(&tx).sighash_all(&tx, 0, &funding_redeemscript, self.channel_value_satoshis)[..]));
656 let our_sig = secp_call!(self.secp_ctx.sign(&sighash, &self.local_keys.funding_key));
658 tx.witness[0].push(Vec::new()); // First is the multisig dummy
660 let our_funding_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap().serialize();
661 let their_funding_key = self.their_funding_pubkey.serialize();
662 if our_funding_key[..] < their_funding_key[..] {
663 tx.witness[0].push(our_sig.serialize_der(&self.secp_ctx).to_vec());
664 tx.witness[0].push(their_sig.serialize_der(&self.secp_ctx).to_vec());
666 tx.witness[0].push(their_sig.serialize_der(&self.secp_ctx).to_vec());
667 tx.witness[0].push(our_sig.serialize_der(&self.secp_ctx).to_vec());
669 tx.witness[0][1].push(SigHashType::All as u8);
670 tx.witness[0][2].push(SigHashType::All as u8);
672 tx.witness[0].push(funding_redeemscript.into_vec());
677 /// Builds the htlc-success or htlc-timeout transaction which spends a given HTLC output
678 /// @local is used only to convert relevant internal structures which refer to remote vs local
679 /// to decide value of outputs and direction of HTLCs.
680 fn build_htlc_transaction(&self, prev_hash: &Sha256dHash, htlc: &HTLCOutputInCommitment, local: bool, keys: &TxCreationKeys) -> Result<Transaction, HandleError> {
681 let mut txins: Vec<TxIn> = Vec::new();
683 prev_hash: prev_hash.clone(),
684 prev_index: htlc.transaction_output_index,
685 script_sig: Script::new(),
689 let mut witnesses: Vec<Vec<Vec<u8>>> = Vec::new();
690 witnesses.push(Vec::new());
692 let total_fee = if htlc.offered {
693 self.feerate_per_kw * HTLC_TIMEOUT_TX_WEIGHT / 1000
695 self.feerate_per_kw * HTLC_SUCCESS_TX_WEIGHT / 1000
698 let mut txouts: Vec<TxOut> = Vec::new();
700 script_pubkey: chan_utils::get_revokeable_redeemscript(&keys.revocation_key,
701 if local { self.their_to_self_delay } else { BREAKDOWN_TIMEOUT },
702 &keys.a_delayed_payment_key).to_v0_p2wsh(),
703 value: htlc.amount_msat / 1000 - total_fee //TODO: BOLT 3 does not specify if we should add amount_msat before dividing or if we should divide by 1000 before subtracting (as we do here)
708 lock_time: if htlc.offered { htlc.cltv_expiry } else { 0 },
715 /// Signs a transaction created by build_htlc_transaction. If the transaction is an
716 /// HTLC-Success transaction (ie htlc.offered is false), preimate must be set!
717 fn sign_htlc_transaction(&self, tx: &mut Transaction, their_sig: &Signature, preimage: &Option<[u8; 32]>, htlc: &HTLCOutputInCommitment, keys: &TxCreationKeys) -> Result<(), HandleError> {
718 if tx.input.len() != 1 {
719 panic!("Tried to sign HTLC transaction that had input count != 1!");
721 if tx.witness.len() != 1 || tx.witness[0].len() != 0 {
722 panic!("Tried to re-sign HTLC transaction");
725 let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, &keys, htlc.offered);
727 let our_htlc_key = secp_call!(chan_utils::derive_private_key(&self.secp_ctx, &keys.per_commitment_point, &self.local_keys.htlc_base_key));
728 let sighash = secp_call!(Message::from_slice(&bip143::SighashComponents::new(&tx).sighash_all(&tx, 0, &htlc_redeemscript, htlc.amount_msat / 1000)[..]));
729 let our_sig = secp_call!(self.secp_ctx.sign(&sighash, &our_htlc_key));
731 let local_tx = PublicKey::from_secret_key(&self.secp_ctx, &our_htlc_key).unwrap() == keys.a_htlc_key;
733 tx.witness[0].push(Vec::new()); // First is the multisig dummy
735 if local_tx { // b, then a
736 tx.witness[0].push(their_sig.serialize_der(&self.secp_ctx).to_vec());
737 tx.witness[0].push(our_sig.serialize_der(&self.secp_ctx).to_vec());
739 tx.witness[0].push(our_sig.serialize_der(&self.secp_ctx).to_vec());
740 tx.witness[0].push(their_sig.serialize_der(&self.secp_ctx).to_vec());
742 tx.witness[0][1].push(SigHashType::All as u8);
743 tx.witness[0][2].push(SigHashType::All as u8);
746 tx.witness[0].push(Vec::new());
748 tx.witness[0].push(preimage.unwrap().to_vec());
751 tx.witness[0].push(htlc_redeemscript.into_vec());
756 pub fn get_update_fulfill_htlc(&mut self, payment_preimage: [u8; 32]) -> Result<msgs::UpdateFulfillHTLC, HandleError> {
757 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
758 return Err(HandleError{err: "Was asked to fulfill an HTLC when channel was not in an operational state", msg: None});
761 let mut sha = Sha256::new();
762 sha.input(&payment_preimage);
763 let mut payment_hash = [0; 32];
764 sha.result(&mut payment_hash);
767 let mut htlc_amount_msat = 0;
768 self.pending_htlcs.retain(|ref htlc| {
769 if !htlc.outbound && htlc.payment_hash == payment_hash {
771 panic!("Duplicate HTLC payment_hash, you probably re-used payment preimages, NEVER DO THIS!");
773 htlc_id = htlc.htlc_id;
774 htlc_amount_msat += htlc.amount_msat;
778 if htlc_amount_msat == 0 {
779 return Err(HandleError{err: "Unable to find a pending HTLC which matched the given payment preimage", msg: None});
782 //TODO: This is racy af, they may have pending messages in flight to us that will not have
784 self.value_to_self_msat += htlc_amount_msat;
785 Ok(msgs::UpdateFulfillHTLC {
786 channel_id: self.channel_id(),
788 payment_preimage: payment_preimage,
792 pub fn get_update_fail_htlc(&mut self, payment_hash: &[u8; 32], err_packet: msgs::OnionErrorPacket) -> Result<msgs::UpdateFailHTLC, HandleError> {
793 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
794 return Err(HandleError{err: "Was asked to fail an HTLC when channel was not in an operational state", msg: None});
798 let mut htlc_amount_msat = 0;
799 self.pending_htlcs.retain(|ref htlc| {
800 if !htlc.outbound && htlc.payment_hash == *payment_hash {
802 panic!("Duplicate HTLC payment_hash, you probably re-used payment preimages, NEVER DO THIS!");
804 htlc_id = htlc.htlc_id;
805 htlc_amount_msat += htlc.amount_msat;
809 if htlc_amount_msat == 0 {
810 return Err(HandleError{err: "Unable to find a pending HTLC which matched the given payment preimage", msg: None});
813 //TODO: This is racy af, they may have pending messages in flight to us that will not have
816 Ok(msgs::UpdateFailHTLC {
817 channel_id: self.channel_id(),
825 pub fn accept_channel(&mut self, msg: &msgs::AcceptChannel) -> Result<(), HandleError> {
826 // Check sanity of message fields:
827 if !self.channel_outbound {
828 return Err(HandleError{err: "Got an accept_channel message from an inbound peer", msg: None});
830 if self.channel_state != ChannelState::OurInitSent as u32 {
831 return Err(HandleError{err: "Got an accept_channel message at a strange time", msg: None});
833 if msg.dust_limit_satoshis > 21000000 * 100000000 {
834 return Err(HandleError{err: "Peer never wants payout outputs?", msg: None});
836 if msg.max_htlc_value_in_flight_msat > self.channel_value_satoshis * 1000 {
837 return Err(HandleError{err: "Bogus max_htlc_value_in_flight_satoshis", msg: None});
839 if msg.channel_reserve_satoshis > self.channel_value_satoshis {
840 return Err(HandleError{err: "Bogus channel_reserve_satoshis", msg: None});
842 if msg.htlc_minimum_msat >= (self.channel_value_satoshis - msg.channel_reserve_satoshis) * 1000 {
843 return Err(HandleError{err: "Minimum htlc value is full channel value", msg: None});
845 //TODO do something with minimum_depth
846 if msg.to_self_delay > MAX_LOCAL_BREAKDOWN_TIMEOUT {
847 return Err(HandleError{err: "They wanted our payments to be delayed by a needlessly long period", msg: None});
849 if msg.max_accepted_htlcs < 1 {
850 return Err(HandleError{err: "0 max_accpted_htlcs makes for a useless channel", msg: None});
853 self.channel_monitor.set_their_htlc_base_key(&msg.htlc_basepoint);
855 self.their_dust_limit_satoshis = msg.dust_limit_satoshis;
856 self.their_max_htlc_value_in_flight_msat = msg.max_htlc_value_in_flight_msat;
857 self.their_channel_reserve_satoshis = msg.channel_reserve_satoshis;
858 self.their_htlc_minimum_msat = msg.htlc_minimum_msat;
859 self.their_to_self_delay = msg.to_self_delay;
860 self.their_max_accepted_htlcs = msg.max_accepted_htlcs;
861 self.their_funding_pubkey = msg.funding_pubkey;
862 self.their_revocation_basepoint = msg.revocation_basepoint;
863 self.their_payment_basepoint = msg.payment_basepoint;
864 self.their_delayed_payment_basepoint = msg.delayed_payment_basepoint;
865 self.their_htlc_basepoint = msg.htlc_basepoint;
866 self.their_cur_commitment_point = msg.first_per_commitment_point;
868 let obscure_factor = self.get_commitment_transaction_number_obscure_factor();
869 self.channel_monitor.set_commitment_obscure_factor(obscure_factor);
871 self.channel_state = ChannelState::OurInitSent as u32 | ChannelState::TheirInitSent as u32;
876 fn funding_created_signature(&mut self, sig: &Signature) -> Result<(Transaction, Signature), HandleError> {
877 let funding_script = self.get_funding_redeemscript();
879 let remote_keys = self.build_remote_transaction_keys()?;
880 let remote_initial_commitment_tx = self.build_commitment_transaction(self.cur_remote_commitment_transaction_number, &remote_keys, false, false)?.0;
881 let remote_sighash = secp_call!(Message::from_slice(&bip143::SighashComponents::new(&remote_initial_commitment_tx).sighash_all(&remote_initial_commitment_tx, 0, &funding_script, self.channel_value_satoshis)[..]));
883 let local_keys = self.build_local_transaction_keys(self.cur_local_commitment_transaction_number)?;
884 let local_initial_commitment_tx = self.build_commitment_transaction(self.cur_local_commitment_transaction_number, &local_keys, true, false)?.0;
885 let local_sighash = secp_call!(Message::from_slice(&bip143::SighashComponents::new(&local_initial_commitment_tx).sighash_all(&local_initial_commitment_tx, 0, &funding_script, self.channel_value_satoshis)[..]));
887 // They sign the "local" commitment transaction, allowing us to broadcast the tx if we wish.
888 secp_call!(self.secp_ctx.verify(&local_sighash, &sig, &self.their_funding_pubkey));
890 // We sign the "remote" commitment transaction, allowing them to broadcast the tx if they wish.
891 Ok((remote_initial_commitment_tx, secp_call!(self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key))))
894 pub fn funding_created(&mut self, msg: &msgs::FundingCreated) -> Result<msgs::FundingSigned, HandleError> {
895 if self.channel_outbound {
896 return Err(HandleError{err: "Received funding_created for an outbound channel?", msg: None});
898 if self.channel_state != (ChannelState::OurInitSent as u32 | ChannelState::TheirInitSent as u32) {
899 return Err(HandleError{err: "Received funding_created after we got the channel!", msg: None});
901 if self.channel_monitor.get_min_seen_secret() != (1 << 48) || self.cur_remote_commitment_transaction_number != (1 << 48) - 1 || self.cur_local_commitment_transaction_number != (1 << 48) - 1 {
902 panic!("Should not have advanced channel commitment tx numbers prior to funding_created");
905 self.channel_monitor.set_funding_info(msg.funding_txid, msg.funding_output_index);
907 let (remote_initial_commitment_tx, our_signature) = match self.funding_created_signature(&msg.signature) {
908 Ok((remote_initial_commitment_tx, sig)) => (remote_initial_commitment_tx, sig),
910 self.channel_monitor.unset_funding_info();
915 // Now that we're past error-generating stuff, update our local state:
917 //TODO: Determine which tx index in remote_initial_commitment_transaction's outputs
918 //represent a revokeable script!
919 self.channel_monitor.provide_tx_info(&remote_initial_commitment_tx, 0, Vec::new());
920 self.channel_state = ChannelState::FundingSent as u32;
921 let funding_txo = self.channel_monitor.get_funding_txo().unwrap();
922 self.channel_id = funding_txo.0.into_be() ^ Uint256::from_u64(funding_txo.1 as u64).unwrap(); //TODO: or le?
924 Ok(msgs::FundingSigned {
925 channel_id: self.channel_id,
926 signature: our_signature
930 /// Handles a funding_signed message from the remote end.
931 /// If this call is successful, broadcast the funding transaction (and not before!)
932 pub fn funding_signed(&mut self, msg: &msgs::FundingSigned) -> Result<(), HandleError> {
933 if !self.channel_outbound {
934 return Err(HandleError{err: "Received funding_signed for an inbound channel?", msg: None});
936 if self.channel_state != ChannelState::FundingCreated as u32 {
937 return Err(HandleError{err: "Received funding_signed in strange state!", msg: None});
939 if self.channel_monitor.get_min_seen_secret() != (1 << 48) || self.cur_remote_commitment_transaction_number != (1 << 48) - 1 || self.cur_local_commitment_transaction_number != (1 << 48) - 1 {
940 panic!("Should not have advanced channel commitment tx numbers prior to funding_created");
943 let funding_script = self.get_funding_redeemscript();
945 let local_keys = self.build_local_transaction_keys(self.cur_local_commitment_transaction_number)?;
946 let local_initial_commitment_tx = self.build_commitment_transaction(self.cur_local_commitment_transaction_number, &local_keys, true, false)?.0;
947 let local_sighash = secp_call!(Message::from_slice(&bip143::SighashComponents::new(&local_initial_commitment_tx).sighash_all(&local_initial_commitment_tx, 0, &funding_script, self.channel_value_satoshis)[..]));
949 // They sign the "local" commitment transaction, allowing us to broadcast the tx if we wish.
950 secp_call!(self.secp_ctx.verify(&local_sighash, &msg.signature, &self.their_funding_pubkey));
952 self.channel_state = ChannelState::FundingSent as u32;
957 pub fn funding_locked(&mut self, msg: &msgs::FundingLocked) -> Result<(), HandleError> {
958 if self.channel_state == ChannelState::FundingSent as u32 {
959 self.channel_state |= ChannelState::TheirFundingLocked as u32;
960 } else if self.channel_state == (ChannelState::FundingSent as u32 | ChannelState::OurFundingLocked as u32) {
961 self.channel_state = ChannelState::ChannelFunded as u32;
962 } else if self.channel_state < ChannelState::FundingSent as u32 {
963 return Err(HandleError{err: "Peer sent a funding_locked before we'd even been told the funding txid", msg: None});
966 //TODO: Note that this must be a duplicate of the previous commitment point they sent us,
967 //as otherwise we will have a commitment transaction that they can't revoke (well, kinda,
968 //they can by sending two revoke_and_acks back-to-back, but not really). This appears to be
969 //a protocol oversight, but I assume I'm just missing something.
970 if self.their_cur_commitment_point != msg.next_per_commitment_point {
971 return Err(HandleError{err: "Non-duplicate next_per_commitment_point in funding_locked", msg: None});
973 self.their_cur_commitment_point = msg.next_per_commitment_point;
977 /// Returns (inbound_htlc_count, outbound_htlc_count, htlc_outbound_value_msat, htlc_inbound_value_msat)
978 fn get_pending_htlc_stats(&self) -> (u32, u32, u64, u64) {
979 let mut inbound_htlc_count: u32 = 0;
980 let mut outbound_htlc_count: u32 = 0;
981 let mut htlc_outbound_value_msat = 0;
982 let mut htlc_inbound_value_msat = 0;
983 for ref htlc in self.pending_htlcs.iter() {
985 inbound_htlc_count += 1;
986 htlc_inbound_value_msat += htlc.amount_msat;
988 outbound_htlc_count += 1;
989 htlc_outbound_value_msat += htlc.amount_msat;
992 (inbound_htlc_count, outbound_htlc_count, htlc_outbound_value_msat, htlc_inbound_value_msat)
995 pub fn update_add_htlc(&mut self, msg: &msgs::UpdateAddHTLC, pending_forward_state: PendingForwardHTLCInfo) -> Result<(), HandleError> {
996 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
997 return Err(HandleError{err: "Got add HTLC message when channel was not in an operational state", msg: None});
999 if msg.amount_msat > self.channel_value_satoshis * 1000 {
1000 return Err(HandleError{err: "Remote side tried to send more than the total value of the channel", msg: None});
1002 if msg.amount_msat < self.our_htlc_minimum_msat {
1003 return Err(HandleError{err: "Remote side tried to send less than our minimum HTLC value", msg: None});
1006 let (inbound_htlc_count, _, htlc_outbound_value_msat, htlc_inbound_value_msat) = self.get_pending_htlc_stats();
1007 if inbound_htlc_count + 1 > OUR_MAX_HTLCS as u32 {
1008 return Err(HandleError{err: "Remote tried to push more than our max accepted HTLCs", msg: None});
1010 //TODO: Spec is unclear if this is per-direction or in total (I assume per direction):
1011 // Check our_max_htlc_value_in_flight_msat
1012 if htlc_inbound_value_msat + msg.amount_msat > Channel::get_our_max_htlc_value_in_flight_msat(self.channel_value_satoshis) {
1013 return Err(HandleError{err: "Remote HTLC add would put them over their max HTLC value in flight", msg: None});
1015 // Check our_channel_reserve_satoshis (we're getting paid, so they have to at least meet
1016 // the reserve_satoshis we told them to always have as direct payment so that they lose
1017 // something if we punish them for broadcasting an old state).
1018 if htlc_inbound_value_msat + htlc_outbound_value_msat + msg.amount_msat + self.value_to_self_msat > (self.channel_value_satoshis - Channel::get_our_channel_reserve_satoshis(self.channel_value_satoshis)) * 1000 {
1019 return Err(HandleError{err: "Remote HTLC add would put them over their reserve value", msg: None});
1021 if self.next_remote_htlc_id != msg.htlc_id {
1022 return Err(HandleError{err: "Remote skipped HTLC ID", msg: None});
1024 if msg.cltv_expiry >= 500000000 {
1025 return Err(HandleError{err: "Remote provided CLTV expiry in seconds instead of block height", msg: None});
1028 //TODO: Check msg.cltv_expiry further? Do this in channel manager?
1030 // Now update local state:
1031 self.next_remote_htlc_id += 1;
1032 self.pending_htlcs.push(HTLCOutput {
1034 htlc_id: msg.htlc_id,
1035 amount_msat: msg.amount_msat,
1036 payment_hash: msg.payment_hash,
1037 cltv_expiry: msg.cltv_expiry,
1038 state: HTLCState::RemoteAnnounced,
1039 pending_forward_state: Some(pending_forward_state),
1045 /// Removes an outbound HTLC which has been commitment_signed by the remote end
1046 fn remove_outbound_htlc(&mut self, htlc_id: u64, check_preimage: Option<[u8; 32]>) -> Result<HTLCOutput, HandleError> {
1047 let mut found_idx = None;
1048 for (idx, ref htlc) in self.pending_htlcs.iter().enumerate() {
1049 if htlc.outbound && htlc.htlc_id == htlc_id {
1050 match check_preimage {
1052 Some(payment_hash) =>
1053 if payment_hash != htlc.payment_hash {
1054 return Err(HandleError{err: "Remote tried to fulfill HTLC with an incorrect preimage", msg: None});
1057 found_idx = Some(idx);
1062 None => Err(HandleError{err: "Remote tried to fulfill/fail an HTLC we couldn't find", msg: None}),
1064 Ok(self.pending_htlcs.swap_remove(idx))
1069 /// Used to fulfill holding_cell_htlcs when we get a remote ack (or implicitly get it by them
1070 /// fulfilling or failing the last pending HTLC)
1071 fn free_holding_cell_htlcs(&mut self) -> Result<Option<(Vec<msgs::UpdateAddHTLC>, msgs::CommitmentSigned)>, HandleError> {
1072 if self.holding_cell_htlcs.len() != 0 {
1073 let mut new_htlcs = self.holding_cell_htlcs.split_off(0);
1074 let mut update_add_msgs = Vec::with_capacity(new_htlcs.len());
1076 for new_htlc in new_htlcs.drain(..) {
1077 // Note that this *can* fail, though it should be due to rather-rare conditions on
1078 // fee races with adding too many outputs which push our total payments just over
1079 // the limit. In case its less rare than I anticipate, we may want to revisit
1080 // handling this case better and maybe fufilling some of the HTLCs while attempting
1081 // to rebalance channels.
1082 if self.holding_cell_htlcs.len() != 0 {
1083 self.holding_cell_htlcs.push(new_htlc);
1085 match self.send_htlc(new_htlc.amount_msat, new_htlc.payment_hash, new_htlc.cltv_expiry, new_htlc.onion_routing_packet.clone()) {
1086 Ok(update_add_msg_option) => update_add_msgs.push(update_add_msg_option.unwrap()),
1088 self.holding_cell_htlcs.push(new_htlc);
1094 //TODO: Need to examine the type of err - if its a fee issue or similar we may want to
1095 //fail it back the route, if its a temporary issue we can ignore it...
1096 if update_add_msgs.len() > 0 {
1097 Ok(Some((update_add_msgs, self.send_commitment()?)))
1106 /// Checks if there are any LocalAnnounced HTLCs remaining and sets
1107 /// ChannelState::AwaitingRemoteRevoke accordingly, possibly calling free_holding_cell_htlcs.
1108 fn check_and_free_holding_cell_htlcs(&mut self) -> Result<Option<(Vec<msgs::UpdateAddHTLC>, msgs::CommitmentSigned)>, HandleError> {
1109 if (self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32)) == (ChannelState::AwaitingRemoteRevoke as u32) {
1110 for htlc in self.pending_htlcs.iter() {
1111 if htlc.state == HTLCState::LocalAnnounced {
1115 self.channel_state &= !(ChannelState::AwaitingRemoteRevoke as u32);
1116 self.free_holding_cell_htlcs()
1122 pub fn update_fulfill_htlc(&mut self, msg: &msgs::UpdateFulfillHTLC) -> Result<Option<(Vec<msgs::UpdateAddHTLC>, msgs::CommitmentSigned)>, HandleError> {
1123 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
1124 return Err(HandleError{err: "Got add HTLC message when channel was not in an operational state", msg: None});
1127 let mut sha = Sha256::new();
1128 sha.input(&msg.payment_preimage);
1129 let mut payment_hash = [0; 32];
1130 sha.result(&mut payment_hash);
1132 match self.remove_outbound_htlc(msg.htlc_id, Some(payment_hash)) {
1133 Err(e) => return Err(e),
1135 //TODO: Double-check that we didn't exceed some limits (or value_to_self went
1137 self.value_to_self_msat -= htlc.amount_msat;
1141 self.check_and_free_holding_cell_htlcs()
1144 pub fn update_fail_htlc(&mut self, msg: &msgs::UpdateFailHTLC) -> Result<([u8; 32], Option<(Vec<msgs::UpdateAddHTLC>, msgs::CommitmentSigned)>), HandleError> {
1145 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
1146 return Err(HandleError{err: "Got add HTLC message when channel was not in an operational state", msg: None});
1149 let payment_hash = match self.remove_outbound_htlc(msg.htlc_id, None) {
1150 Err(e) => return Err(e),
1152 //TODO: Double-check that we didn't exceed some limits (or value_to_self went
1158 let holding_cell_freedom = self.check_and_free_holding_cell_htlcs()?;
1159 Ok((payment_hash, holding_cell_freedom))
1162 pub fn update_fail_malformed_htlc(&mut self, msg: &msgs::UpdateFailMalformedHTLC) -> Result<([u8; 32], Option<(Vec<msgs::UpdateAddHTLC>, msgs::CommitmentSigned)>), HandleError> {
1163 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
1164 return Err(HandleError{err: "Got add HTLC message when channel was not in an operational state", msg: None});
1167 let payment_hash = match self.remove_outbound_htlc(msg.htlc_id, None) {
1168 Err(e) => return Err(e),
1170 //TODO: Double-check that we didn't exceed some limits (or value_to_self went
1176 let holding_cell_freedom = self.check_and_free_holding_cell_htlcs()?;
1177 Ok((payment_hash, holding_cell_freedom))
1180 pub fn commitment_signed(&mut self, msg: &msgs::CommitmentSigned) -> Result<(msgs::RevokeAndACK, Vec<PendingForwardHTLCInfo>), HandleError> {
1181 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
1182 return Err(HandleError{err: "Got commitment signed message when channel was not in an operational state", msg: None});
1185 let funding_script = self.get_funding_redeemscript();
1187 let local_keys = self.build_local_transaction_keys(self.cur_local_commitment_transaction_number)?;
1188 let local_commitment_tx = self.build_commitment_transaction(self.cur_local_commitment_transaction_number, &local_keys, true, false)?;
1189 let local_sighash = secp_call!(Message::from_slice(&bip143::SighashComponents::new(&local_commitment_tx.0).sighash_all(&local_commitment_tx.0, 0, &funding_script, self.channel_value_satoshis)[..]));
1190 secp_call!(self.secp_ctx.verify(&local_sighash, &msg.signature, &self.their_funding_pubkey));
1192 if msg.htlc_signatures.len() != local_commitment_tx.1.len() {
1193 return Err(HandleError{err: "Got wrong number of HTLC signatures from remote", msg: None});
1196 for (idx, ref htlc) in local_commitment_tx.1.iter().enumerate() {
1197 let htlc_tx = self.build_htlc_transaction(&local_commitment_tx.0.txid(), htlc, true, &local_keys)?;
1198 let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, &local_keys, htlc.offered);
1199 let htlc_sighash = secp_call!(Message::from_slice(&bip143::SighashComponents::new(&htlc_tx).sighash_all(&htlc_tx, 0, &htlc_redeemscript, htlc.amount_msat / 1000)[..]));
1200 secp_call!(self.secp_ctx.verify(&htlc_sighash, &msg.htlc_signatures[idx], &local_keys.b_htlc_key));
1203 let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(self.cur_local_commitment_transaction_number - 1)?).unwrap();
1204 let per_commitment_secret = chan_utils::build_commitment_secret(self.local_keys.commitment_seed, self.cur_local_commitment_transaction_number);
1206 //TODO: Store htlc keys in our channel_watcher
1208 // Update state now that we've passed all the can-fail calls...
1210 let mut to_forward_infos = Vec::new();
1211 for ref mut htlc in self.pending_htlcs.iter_mut() {
1212 if htlc.state == HTLCState::RemoteAnnounced {
1213 htlc.state = HTLCState::Committed;
1214 to_forward_infos.push(htlc.pending_forward_state.take().unwrap());
1218 self.cur_local_commitment_transaction_number -= 1;
1220 Ok((msgs::RevokeAndACK {
1221 channel_id: self.channel_id,
1222 per_commitment_secret: per_commitment_secret,
1223 next_per_commitment_point: next_per_commitment_point,
1224 }, to_forward_infos))
1227 /// Handles receiving a remote's revoke_and_ack. Note that we may return a new
1228 /// commitment_signed message here in case we had pending outbound HTLCs to add which were
1229 /// waiting on this revoke_and_ack. The generation of this new commitment_signed may also fail,
1230 /// generating an appropriate error *after* the channel state has been updated based on the
1231 /// revoke_and_ack message.
1232 pub fn revoke_and_ack(&mut self, msg: &msgs::RevokeAndACK) -> Result<Option<(Vec<msgs::UpdateAddHTLC>, msgs::CommitmentSigned)>, HandleError> {
1233 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
1234 return Err(HandleError{err: "Got revoke/ACK message when channel was not in an operational state", msg: None});
1236 if PublicKey::from_secret_key(&self.secp_ctx, &get_key!(&self.secp_ctx, &msg.per_commitment_secret)).unwrap() != self.their_cur_commitment_point {
1237 return Err(HandleError{err: "Got a revoke commitment secret which didn't correspond to their current pubkey", msg: None});
1239 self.channel_monitor.provide_secret(self.cur_remote_commitment_transaction_number, msg.per_commitment_secret)?;
1241 // Update state now that we've passed all the can-fail calls...
1242 // (note that we may still fail to generate the new commitment_signed message, but that's
1243 // OK, we step the channel here and *then* if the new generation fails we can fail the
1244 // channel based on that, but stepping stuff here should be safe either way.
1245 self.channel_state &= !(ChannelState::AwaitingRemoteRevoke as u32);
1246 self.their_cur_commitment_point = msg.next_per_commitment_point;
1247 self.cur_remote_commitment_transaction_number -= 1;
1248 for htlc in self.pending_htlcs.iter_mut() {
1249 if htlc.state == HTLCState::LocalAnnounced {
1250 htlc.state = HTLCState::Committed;
1254 self.free_holding_cell_htlcs()
1257 pub fn update_fee(&mut self, fee_estimator: &FeeEstimator, msg: &msgs::UpdateFee) -> Result<(), HandleError> {
1258 if self.channel_outbound {
1259 return Err(HandleError{err: "Non-funding remote tried to update channel fee", msg: None});
1261 Channel::check_remote_fee(fee_estimator, msg.feerate_per_kw).unwrap();
1262 self.feerate_per_kw = msg.feerate_per_kw as u64;
1266 // Public utilities:
1268 pub fn channel_id(&self) -> Uint256 {
1272 /// Gets the "user_id" value passed into the construction of this channel. It has no special
1273 /// meaning and exists only to allow users to have a persistent identifier of a channel.
1274 pub fn get_user_id(&self) -> u64 {
1278 /// Guaranteed to be Some after both FundingLocked messages have been exchanged (and, thus,
1279 /// is_usable() returns true).
1280 pub fn get_short_channel_id(&self) -> Option<u64> {
1281 self.short_channel_id
1284 /// Returns the funding_txo we either got from our peer, or were given by
1285 /// get_outbound_funding_created.
1286 pub fn get_funding_txo(&self) -> Option<(Sha256dHash, u16)> {
1287 self.channel_monitor.get_funding_txo()
1290 pub fn get_their_node_id(&self) -> PublicKey {
1294 pub fn get_our_htlc_minimum_msat(&self) -> u64 {
1295 self.our_htlc_minimum_msat
1298 pub fn get_value_satoshis(&self) -> u64 {
1299 self.channel_value_satoshis
1302 pub fn get_channel_update_count(&mut self) -> u32 {
1303 self.channel_update_count += 1; //TODO: This should be base on updates, not updates *sent*
1304 self.channel_update_count
1307 /// Gets the fee we'd want to charge for adding an HTLC output to this Channel
1308 pub fn get_our_fee_base_msat(&self, fee_estimator: &FeeEstimator) -> u32 {
1309 // For lack of a better metric, we calculate what it would cost to consolidate the new HTLC
1310 // output value back into a transaction with the regular channel output:
1312 // the fee cost of the HTLC-Success/HTLC-Timeout transaction:
1313 let mut res = self.feerate_per_kw * cmp::max(HTLC_TIMEOUT_TX_WEIGHT, HTLC_SUCCESS_TX_WEIGHT);
1315 if self.channel_outbound {
1316 // + the marginal fee increase cost to us in the commitment transaction:
1317 res += self.feerate_per_kw * COMMITMENT_TX_WEIGHT_PER_HTLC;
1320 // + the marginal cost of an input which spends the HTLC-Success/HTLC-Timeout output:
1321 res += fee_estimator.get_est_sat_per_vbyte(ConfirmationTarget::Normal) * SPENDING_INPUT_FOR_A_OUTPUT_WEIGHT * 250;
1326 pub fn channel_monitor(&self) -> ChannelMonitor {
1327 if self.channel_state < ChannelState::FundingCreated as u32 {
1328 panic!("Can't get a channel monitor until funding has been created");
1330 self.channel_monitor.clone()
1333 /// Returns true if this channel is fully established and not known to be closing.
1334 pub fn is_usable(&self) -> bool {
1335 (self.channel_state & (ChannelState::ChannelFunded as u32)) == (ChannelState::ChannelFunded as u32)
1338 /// Returns true if this channel is currently available for use. This is a superset of
1339 /// is_usable() and considers things like the channel being temporarily disabled.
1340 pub fn is_live(&self) -> bool {
1344 /// Called by channelmanager based on chain blocks being connected.
1345 /// Note that we only need to use this to detect funding_signed, anything else is handled by
1346 /// the channel_monitor.
1347 pub fn block_connected(&mut self, header: &BlockHeader, height: u32, txn_matched: &[&Transaction], indexes_of_txn_matched: &[u32]) -> Option<msgs::FundingLocked> {
1348 if self.funding_tx_confirmations > 0 {
1349 if header.bitcoin_hash() != self.last_block_connected {
1350 self.last_block_connected = header.bitcoin_hash();
1351 self.funding_tx_confirmations += 1;
1352 if self.funding_tx_confirmations == CONF_TARGET as u64 {
1353 if self.channel_state == ChannelState::FundingSent as u32 {
1354 self.channel_state |= ChannelState::OurFundingLocked as u32;
1355 } else if self.channel_state == (ChannelState::FundingSent as u32 | ChannelState::TheirFundingLocked as u32) {
1356 self.channel_state = ChannelState::ChannelFunded as u32;
1357 //TODO: Something about a state where we "lost confirmation"
1358 } else if self.channel_state < ChannelState::ChannelFunded as u32 {
1359 panic!("Started confirming a channel in a state pre-FundingSent?");
1361 self.funding_tx_confirmed_in = header.bitcoin_hash();
1363 //TODO: Note that this must be a duplicate of the previous commitment point they sent us,
1364 //as otherwise we will have a commitment transaction that they can't revoke (well, kinda,
1365 //they can by sending two revoke_and_acks back-to-back, but not really). This appears to be
1366 //a protocol oversight, but I assume I'm just missing something.
1367 let next_per_commitment_secret = match self.build_local_commitment_secret(self.cur_local_commitment_transaction_number) {
1368 Ok(secret) => secret,
1369 Err(_) => return None
1372 let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &next_per_commitment_secret).unwrap();
1373 return Some(msgs::FundingLocked {
1374 channel_id: self.channel_id,
1375 next_per_commitment_point: next_per_commitment_point,
1380 if self.channel_state & !(ChannelState::TheirFundingLocked as u32) == ChannelState::FundingSent as u32 {
1381 for (ref tx, index_in_block) in txn_matched.iter().zip(indexes_of_txn_matched) {
1382 if tx.txid() == self.channel_monitor.get_funding_txo().unwrap().0 {
1383 self.funding_tx_confirmations = 1;
1384 self.short_channel_id = Some(((height as u64) << (5*8)) |
1385 ((*index_in_block as u64) << (2*8)) |
1386 ((self.channel_monitor.get_funding_txo().unwrap().1 as u64) << (2*8)));
1393 /// Called by channelmanager based on chain blocks being disconnected.
1394 /// Returns true if we need to close the channel now due to funding transaction
1395 /// unconfirmation/reorg.
1396 pub fn block_disconnected(&mut self, header: &BlockHeader) -> bool {
1397 if self.funding_tx_confirmations > 0 {
1398 self.funding_tx_confirmations -= 1;
1399 if self.funding_tx_confirmations == UNCONF_THRESHOLD as u64 {
1403 if header.bitcoin_hash() == self.funding_tx_confirmed_in {
1404 self.funding_tx_confirmations = CONF_TARGET as u64 - 1;
1409 // Methods to get unprompted messages to send to the remote end (or where we already returned
1410 // something in the handler for the message that prompted this message):
1412 pub fn get_open_channel(&self, chain_hash: Sha256dHash, fee_estimator: &FeeEstimator) -> Result<msgs::OpenChannel, HandleError> {
1413 if !self.channel_outbound {
1414 panic!("Tried to open a channel for an inbound channel?");
1416 if self.channel_state != ChannelState::OurInitSent as u32 {
1417 return Err(HandleError{err: "Cannot generate an open_channel after we've moved forward", msg: None});
1420 if self.cur_local_commitment_transaction_number != (1 << 48) - 1 {
1421 panic!("Tried to send an open_channel for a channel that has already advanced");
1424 let local_commitment_secret = self.build_local_commitment_secret(self.cur_local_commitment_transaction_number)?;
1426 Ok(msgs::OpenChannel {
1427 chain_hash: chain_hash,
1428 temporary_channel_id: self.channel_id,
1429 funding_satoshis: self.channel_value_satoshis,
1430 push_msat: 0, //TODO: Something about feerate?
1431 dust_limit_satoshis: self.our_dust_limit_satoshis,
1432 max_htlc_value_in_flight_msat: Channel::get_our_max_htlc_value_in_flight_msat(self.channel_value_satoshis),
1433 channel_reserve_satoshis: Channel::get_our_channel_reserve_satoshis(self.channel_value_satoshis),
1434 htlc_minimum_msat: self.our_htlc_minimum_msat,
1435 feerate_per_kw: fee_estimator.get_est_sat_per_vbyte(ConfirmationTarget::Background) as u32 * 250,
1436 to_self_delay: BREAKDOWN_TIMEOUT,
1437 max_accepted_htlcs: OUR_MAX_HTLCS,
1438 funding_pubkey: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap(),
1439 revocation_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key).unwrap(),
1440 payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key).unwrap(),
1441 delayed_payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key).unwrap(),
1442 htlc_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key).unwrap(),
1443 first_per_commitment_point: PublicKey::from_secret_key(&self.secp_ctx, &local_commitment_secret).unwrap(),
1444 channel_flags: if self.announce_publicly {1} else {0},
1445 shutdown_scriptpubkey: None,
1449 pub fn get_accept_channel(&self) -> Result<msgs::AcceptChannel, HandleError> {
1450 if self.channel_outbound {
1451 panic!("Tried to send accept_channel for an outbound channel?");
1453 if self.channel_state != (ChannelState::OurInitSent as u32) | (ChannelState::TheirInitSent as u32) {
1454 panic!("Tried to send accept_channel after channel had moved forward");
1456 if self.cur_local_commitment_transaction_number != (1 << 48) - 1 {
1457 panic!("Tried to send an accept_channel for a channel that has already advanced");
1460 let local_commitment_secret = self.build_local_commitment_secret(self.cur_local_commitment_transaction_number)?;
1462 Ok(msgs::AcceptChannel {
1463 temporary_channel_id: self.channel_id,
1464 dust_limit_satoshis: self.our_dust_limit_satoshis,
1465 max_htlc_value_in_flight_msat: Channel::get_our_max_htlc_value_in_flight_msat(self.channel_value_satoshis),
1466 channel_reserve_satoshis: Channel::get_our_channel_reserve_satoshis(self.channel_value_satoshis),
1467 htlc_minimum_msat: self.our_htlc_minimum_msat,
1468 minimum_depth: CONF_TARGET,
1469 to_self_delay: BREAKDOWN_TIMEOUT,
1470 max_accepted_htlcs: OUR_MAX_HTLCS,
1471 funding_pubkey: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap(),
1472 revocation_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key).unwrap(),
1473 payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key).unwrap(),
1474 delayed_payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key).unwrap(),
1475 htlc_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key).unwrap(),
1476 first_per_commitment_point: PublicKey::from_secret_key(&self.secp_ctx, &local_commitment_secret).unwrap(),
1477 shutdown_scriptpubkey: None,
1481 fn get_outbound_funding_created_signature(&mut self) -> Result<Signature, HandleError> {
1482 let funding_script = self.get_funding_redeemscript();
1484 let remote_keys = self.build_remote_transaction_keys()?;
1485 let remote_initial_commitment_tx = self.build_commitment_transaction(self.cur_remote_commitment_transaction_number, &remote_keys, false, false)?.0;
1486 let remote_sighash = secp_call!(Message::from_slice(&bip143::SighashComponents::new(&remote_initial_commitment_tx).sighash_all(&remote_initial_commitment_tx, 0, &funding_script, self.channel_value_satoshis)[..]));
1488 // We sign the "remote" commitment transaction, allowing them to broadcast the tx if they wish.
1489 Ok(secp_call!(self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key)))
1492 /// Updates channel state with knowledge of the funding transaction's txid/index, and generates
1493 /// a funding_created message for the remote peer.
1494 /// Panics if called at some time other than immediately after initial handshake, if called twice,
1495 /// or if called on an inbound channel.
1496 /// Note that channel_id changes during this call!
1497 /// Do NOT broadcast the funding transaction until after a successful funding_signed call!
1498 pub fn get_outbound_funding_created(&mut self, funding_txid: Sha256dHash, funding_output_index: u16) -> Result<msgs::FundingCreated, HandleError> {
1499 if !self.channel_outbound {
1500 panic!("Tried to create outbound funding_created message on an inbound channel!");
1502 if self.channel_state != (ChannelState::OurInitSent as u32 | ChannelState::TheirInitSent as u32) {
1503 panic!("Tried to get a funding_created messsage at a time other than immediately after initial handshake completion (or tried to get funding_created twice)");
1505 if self.channel_monitor.get_min_seen_secret() != (1 << 48) || self.cur_remote_commitment_transaction_number != (1 << 48) - 1 || self.cur_local_commitment_transaction_number != (1 << 48) - 1 {
1506 panic!("Should not have advanced channel commitment tx numbers prior to funding_created");
1509 self.channel_monitor.set_funding_info(funding_txid, funding_output_index);
1511 let our_signature = match self.get_outbound_funding_created_signature() {
1514 self.channel_monitor.unset_funding_info();
1519 let temporary_channel_id = self.channel_id;
1521 // Now that we're past error-generating stuff, update our local state:
1523 self.channel_state = ChannelState::FundingCreated as u32;
1524 let funding_txo = self.channel_monitor.get_funding_txo().unwrap();
1525 self.channel_id = funding_txo.0.into_be() ^ Uint256::from_u64(funding_txo.1 as u64).unwrap(); //TODO: or le?
1527 Ok(msgs::FundingCreated {
1528 temporary_channel_id: temporary_channel_id,
1529 funding_txid: funding_txid,
1530 funding_output_index: funding_output_index,
1531 signature: our_signature
1535 /// Gets an UnsignedChannelAnnouncement, as well as a signature covering it using our
1536 /// bitcoin_key, if available, for this channel. The channel must be publicly announceable and
1537 /// available for use (have exchanged FundingLocked messages in both directions. Should be used
1538 /// for both loose and in response to an AnnouncementSignatures message from the remote peer.
1539 pub fn get_channel_announcement(&self, our_node_id: PublicKey, chain_hash: Sha256dHash) -> Result<(msgs::UnsignedChannelAnnouncement, Signature), HandleError> {
1540 if !self.announce_publicly {
1541 return Err(HandleError{err: "Channel is not available for public announcements", msg: None});
1543 if self.channel_state < ChannelState::ChannelFunded as u32 {
1544 return Err(HandleError{err: "Cannot get a ChannelAnnouncement until the channel funding has been locked", msg: None});
1547 let were_node_one = our_node_id.serialize()[..] < self.their_node_id.serialize()[..];
1548 let our_bitcoin_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap();
1550 let msg = msgs::UnsignedChannelAnnouncement {
1551 features: msgs::GlobalFeatures::new(),
1552 chain_hash: chain_hash,
1553 short_channel_id: self.get_short_channel_id().unwrap(),
1554 node_id_1: if were_node_one { our_node_id } else { self.get_their_node_id() },
1555 node_id_2: if were_node_one { self.get_their_node_id() } else { our_node_id },
1556 bitcoin_key_1: if were_node_one { our_bitcoin_key } else { self.their_funding_pubkey },
1557 bitcoin_key_2: if were_node_one { self.their_funding_pubkey } else { our_bitcoin_key },
1560 let msghash = Message::from_slice(&Sha256dHash::from_data(&msg.encode()[..])[..]).unwrap();
1561 let sig = secp_call!(self.secp_ctx.sign(&msghash, &self.local_keys.funding_key));
1567 // Send stuff to our remote peers:
1569 /// Adds a pending outbound HTLC to this channel, note that you probably want
1570 /// send_htlc_and_commit instead cause you'll want both messages at once.
1571 /// This returns an option instead of a pure UpdateAddHTLC as we may be in a state where we are
1572 /// waiting on the remote peer to send us a revoke_and_ack during which time we cannot add new
1573 /// HTLCs on the wire or we wouldn't be able to determine what they actually ACK'ed.
1574 pub fn send_htlc(&mut self, amount_msat: u64, payment_hash: [u8; 32], cltv_expiry: u32, onion_routing_packet: msgs::OnionPacket) -> Result<Option<msgs::UpdateAddHTLC>, HandleError> {
1575 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
1576 return Err(HandleError{err: "Cannot send HTLC until channel is fully established", msg: None});
1579 if amount_msat > self.channel_value_satoshis * 1000 {
1580 return Err(HandleError{err: "Cannot send more than the total value of the channel", msg: None});
1582 if amount_msat < self.their_htlc_minimum_msat {
1583 return Err(HandleError{err: "Cannot send less than their minimum HTLC value", msg: None});
1586 let (_, outbound_htlc_count, htlc_outbound_value_msat, htlc_inbound_value_msat) = self.get_pending_htlc_stats();
1587 if outbound_htlc_count + 1 > self.their_max_accepted_htlcs as u32 {
1588 return Err(HandleError{err: "Cannot push more than their max accepted HTLCs", msg: None});
1590 //TODO: Spec is unclear if this is per-direction or in total (I assume per direction):
1591 // Check their_max_htlc_value_in_flight_msat
1592 if htlc_outbound_value_msat + amount_msat > self.their_max_htlc_value_in_flight_msat {
1593 return Err(HandleError{err: "Cannot send value that would put us over our max HTLC value in flight", msg: None});
1595 // Check their_channel_reserve_satoshis:
1596 if htlc_inbound_value_msat + htlc_outbound_value_msat + amount_msat + (self.channel_value_satoshis * 1000 - self.value_to_self_msat) > (self.channel_value_satoshis - self.their_channel_reserve_satoshis) * 1000 {
1597 return Err(HandleError{err: "Cannot send value that would put us over our reserve value", msg: None});
1600 //TODO: Check cltv_expiry? Do this in channel manager?
1602 // Now update local state:
1603 if (self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32)) == (ChannelState::AwaitingRemoteRevoke as u32) {
1604 //TODO: Check the limits *including* other pending holding cell HTLCs!
1605 self.holding_cell_htlcs.push(HTLCOutputAwaitingACK {
1606 amount_msat: amount_msat,
1607 payment_hash: payment_hash,
1608 cltv_expiry: cltv_expiry,
1609 onion_routing_packet: onion_routing_packet,
1610 time_created: Instant::now(),
1615 self.pending_htlcs.push(HTLCOutput {
1617 htlc_id: self.next_local_htlc_id,
1618 amount_msat: amount_msat,
1619 payment_hash: payment_hash.clone(),
1620 cltv_expiry: cltv_expiry,
1621 state: HTLCState::LocalAnnounced,
1622 pending_forward_state: None
1625 let res = msgs::UpdateAddHTLC {
1626 channel_id: self.channel_id,
1627 htlc_id: self.next_local_htlc_id,
1628 amount_msat: amount_msat,
1629 payment_hash: payment_hash,
1630 cltv_expiry: cltv_expiry,
1631 onion_routing_packet: onion_routing_packet,
1633 self.next_local_htlc_id += 1;
1638 /// Creates a signed commitment transaction to send to the remote peer.
1639 pub fn send_commitment(&mut self) -> Result<msgs::CommitmentSigned, HandleError> {
1640 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
1641 return Err(HandleError{err: "Cannot create commitment tx until channel is fully established", msg: None});
1644 let funding_script = self.get_funding_redeemscript();
1646 let remote_keys = self.build_remote_transaction_keys()?;
1647 let remote_commitment_tx = self.build_commitment_transaction(self.cur_remote_commitment_transaction_number, &remote_keys, false, true)?;
1648 let remote_sighash = secp_call!(Message::from_slice(&bip143::SighashComponents::new(&remote_commitment_tx.0).sighash_all(&remote_commitment_tx.0, 0, &funding_script, self.channel_value_satoshis)[..]));
1649 let our_sig = secp_call!(self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key));
1651 let mut htlc_sigs = Vec::new();
1653 for ref htlc in remote_commitment_tx.1.iter() {
1654 let htlc_tx = self.build_htlc_transaction(&remote_commitment_tx.0.txid(), htlc, false, &remote_keys)?;
1655 let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, &remote_keys, htlc.offered);
1656 let htlc_sighash = secp_call!(Message::from_slice(&bip143::SighashComponents::new(&htlc_tx).sighash_all(&htlc_tx, 0, &htlc_redeemscript, htlc.amount_msat / 1000)[..]));
1657 let our_htlc_key = secp_call!(chan_utils::derive_private_key(&self.secp_ctx, &remote_keys.per_commitment_point, &self.local_keys.htlc_base_key));
1658 htlc_sigs.push(secp_call!(self.secp_ctx.sign(&htlc_sighash, &our_htlc_key)));
1661 // Update state now that we've passed all the can-fail calls...
1662 self.channel_state |= ChannelState::AwaitingRemoteRevoke as u32;
1664 Ok(msgs::CommitmentSigned {
1665 channel_id: self.channel_id,
1667 htlc_signatures: htlc_sigs,
1671 /// Adds a pending outbound HTLC to this channel, and creates a signed commitment transaction
1672 /// to send to the remote peer in one go.
1673 /// Shorthand for calling send_htlc() followed by send_commitment(), see docs on those for
1675 pub fn send_htlc_and_commit(&mut self, amount_msat: u64, payment_hash: [u8; 32], cltv_expiry: u32, onion_routing_packet: msgs::OnionPacket) -> Result<Option<(msgs::UpdateAddHTLC, msgs::CommitmentSigned)>, HandleError> {
1676 match self.send_htlc(amount_msat, payment_hash, cltv_expiry, onion_routing_packet)? {
1677 Some(update_add_htlc) =>
1678 Ok(Some((update_add_htlc, self.send_commitment()?))),
1686 use bitcoin::util::misc::hex_bytes;
1687 use bitcoin::util::hash::Sha256dHash;
1688 use bitcoin::util::bip143;
1689 use bitcoin::network::serialize::serialize;
1690 use bitcoin::blockdata::transaction::Transaction;
1691 use ln::channel::{Channel,HTLCOutput,HTLCState,HTLCOutputInCommitment,TxCreationKeys};
1693 use chain::chaininterface::{FeeEstimator,ConfirmationTarget};
1694 use secp256k1::{Secp256k1,Message,Signature};
1695 use secp256k1::key::{SecretKey,PublicKey};
1696 use crypto::sha2::Sha256;
1697 use crypto::digest::Digest;
1699 struct TestFeeEstimator {
1702 impl FeeEstimator for TestFeeEstimator {
1703 fn get_est_sat_per_vbyte(&self, _: ConfirmationTarget) -> u64 {
1709 fn outbound_commitment_test() {
1710 // Test vectors from BOLT 3 Appendix C:
1711 let feeest = TestFeeEstimator{fee_est: 15000/250};
1712 let mut chan = Channel::new_outbound(&feeest, PublicKey::new(), 10000000, false, 42); // Nothing uses their network key in this test
1713 chan.their_to_self_delay = 144;
1714 chan.our_dust_limit_satoshis = 546;
1716 let secp_ctx = Secp256k1::new();
1718 chan.local_keys.funding_key = SecretKey::from_slice(&secp_ctx, &hex_bytes("30ff4956bbdd3222d44cc5e8a1261dab1e07957bdac5ae88fe3261ef321f3749").unwrap()[..]).unwrap();
1719 assert_eq!(PublicKey::from_secret_key(&secp_ctx, &chan.local_keys.funding_key).unwrap().serialize()[..],
1720 hex_bytes("023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb").unwrap()[..]);
1722 chan.local_keys.payment_base_key = SecretKey::from_slice(&secp_ctx, &hex_bytes("1111111111111111111111111111111111111111111111111111111111111111").unwrap()[..]).unwrap();
1723 chan.local_keys.delayed_payment_base_key = SecretKey::from_slice(&secp_ctx, &hex_bytes("3333333333333333333333333333333333333333333333333333333333333333").unwrap()[..]).unwrap();
1724 chan.local_keys.htlc_base_key = SecretKey::from_slice(&secp_ctx, &hex_bytes("1111111111111111111111111111111111111111111111111111111111111111").unwrap()[..]).unwrap();
1725 // chan.local_keys.commitment_seed isn't derived in the test vectors :(
1727 chan.channel_monitor.set_funding_info(Sha256dHash::from_hex("8984484a580b825b9972d7adb15050b3ab624ccd731946b3eeddb92f4e7ef6be").unwrap(), 0);
1729 chan.their_payment_basepoint = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex_bytes("4444444444444444444444444444444444444444444444444444444444444444").unwrap()[..]).unwrap()).unwrap();
1730 assert_eq!(chan.their_payment_basepoint.serialize()[..],
1731 hex_bytes("032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991").unwrap()[..]);
1733 chan.their_funding_pubkey = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex_bytes("1552dfba4f6cf29a62a0af13c8d6981d36d0ef8d61ba10fb0fe90da7634d7e13").unwrap()[..]).unwrap()).unwrap();
1734 assert_eq!(chan.their_funding_pubkey.serialize()[..],
1735 hex_bytes("030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c1").unwrap()[..]);
1737 chan.their_htlc_basepoint = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex_bytes("4444444444444444444444444444444444444444444444444444444444444444").unwrap()[..]).unwrap()).unwrap();
1738 assert_eq!(chan.their_htlc_basepoint.serialize()[..],
1739 hex_bytes("032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991").unwrap()[..]);
1741 chan.their_revocation_basepoint = PublicKey::from_slice(&secp_ctx, &hex_bytes("02466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f27").unwrap()[..]).unwrap();
1743 // We can't just use build_local_transaction_keys here as the per_commitment_secret is not
1744 // derived from a commitment_seed, so instead we copy it here and call
1745 // build_commitment_transaction.
1746 let delayed_payment_base = PublicKey::from_secret_key(&secp_ctx, &chan.local_keys.delayed_payment_base_key).unwrap();
1747 let per_commitment_secret = SecretKey::from_slice(&secp_ctx, &hex_bytes("1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100").unwrap()[..]).unwrap();
1748 let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &per_commitment_secret).unwrap();
1749 let htlc_basepoint = PublicKey::from_secret_key(&secp_ctx, &chan.local_keys.htlc_base_key).unwrap();
1750 let keys = TxCreationKeys::new(&secp_ctx, &per_commitment_point, &delayed_payment_base, &htlc_basepoint, &chan.their_revocation_basepoint, &chan.their_payment_basepoint, &chan.their_htlc_basepoint).unwrap();
1752 let mut unsigned_tx: (Transaction, Vec<HTLCOutputInCommitment>);
1754 macro_rules! test_commitment {
1755 ( $their_sig_hex: expr, $our_sig_hex: expr, $tx_hex: expr) => {
1756 unsigned_tx = chan.build_commitment_transaction(42, &keys, true, false).unwrap();
1757 let their_signature = Signature::from_der(&secp_ctx, &hex_bytes($their_sig_hex).unwrap()[..]).unwrap();
1758 let sighash = Message::from_slice(&bip143::SighashComponents::new(&unsigned_tx.0).sighash_all(&unsigned_tx.0, 0, &chan.get_funding_redeemscript(), chan.channel_value_satoshis)[..]).unwrap();
1759 secp_ctx.verify(&sighash, &their_signature, &chan.their_funding_pubkey).unwrap();
1761 chan.sign_commitment_transaction(&mut unsigned_tx.0, &their_signature).unwrap();
1763 assert_eq!(serialize(&unsigned_tx.0).unwrap()[..],
1764 hex_bytes($tx_hex).unwrap()[..]);
1768 macro_rules! test_htlc_output {
1769 ( $htlc_idx: expr, $their_sig_hex: expr, $our_sig_hex: expr, $tx_hex: expr ) => {
1770 let remote_signature = Signature::from_der(&secp_ctx, &hex_bytes($their_sig_hex).unwrap()[..]).unwrap();
1772 let ref htlc = unsigned_tx.1[$htlc_idx];
1773 let mut htlc_tx = chan.build_htlc_transaction(&unsigned_tx.0.txid(), &htlc, true, &keys).unwrap();
1774 let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, &keys, htlc.offered);
1775 let htlc_sighash = Message::from_slice(&bip143::SighashComponents::new(&htlc_tx).sighash_all(&htlc_tx, 0, &htlc_redeemscript, htlc.amount_msat / 1000)[..]).unwrap();
1776 secp_ctx.verify(&htlc_sighash, &remote_signature, &keys.b_htlc_key).unwrap();
1778 let mut preimage: Option<[u8; 32]> = None;
1781 let mut sha = Sha256::new();
1782 sha.input(&[i; 32]);
1784 let mut out = [0; 32];
1785 sha.result(&mut out);
1787 if out == htlc.payment_hash {
1788 preimage = Some([i; 32]);
1792 assert!(preimage.is_some());
1795 chan.sign_htlc_transaction(&mut htlc_tx, &remote_signature, &preimage, &htlc, &keys).unwrap();
1796 assert_eq!(serialize(&htlc_tx).unwrap()[..],
1797 hex_bytes($tx_hex).unwrap()[..]);
1802 // simple commitment tx with no HTLCs
1803 chan.value_to_self_msat = 7000000000;
1805 test_commitment!("3045022100f51d2e566a70ba740fc5d8c0f07b9b93d2ed741c3c0860c613173de7d39e7968022041376d520e9c0e1ad52248ddf4b22e12be8763007df977253ef45a4ca3bdb7c0",
1806 "3044022051b75c73198c6deee1a875871c3961832909acd297c6b908d59e3319e5185a46022055c419379c5051a78d00dbbce11b5b664a0c22815fbcc6fcef6b1937c3836939",
1807 "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");
1810 chan.pending_htlcs.push({
1811 let mut out = HTLCOutput{
1814 amount_msat: 1000000,
1816 payment_hash: [0; 32],
1817 state: HTLCState::Committed,
1818 pending_forward_state: None,
1820 let mut sha = Sha256::new();
1821 sha.input(&hex_bytes("0000000000000000000000000000000000000000000000000000000000000000").unwrap());
1822 sha.result(&mut out.payment_hash);
1825 chan.pending_htlcs.push({
1826 let mut out = HTLCOutput{
1829 amount_msat: 2000000,
1831 payment_hash: [0; 32],
1832 state: HTLCState::Committed,
1833 pending_forward_state: None,
1835 let mut sha = Sha256::new();
1836 sha.input(&hex_bytes("0101010101010101010101010101010101010101010101010101010101010101").unwrap());
1837 sha.result(&mut out.payment_hash);
1840 chan.pending_htlcs.push({
1841 let mut out = HTLCOutput{
1844 amount_msat: 2000000,
1846 payment_hash: [0; 32],
1847 state: HTLCState::Committed,
1848 pending_forward_state: None,
1850 let mut sha = Sha256::new();
1851 sha.input(&hex_bytes("0202020202020202020202020202020202020202020202020202020202020202").unwrap());
1852 sha.result(&mut out.payment_hash);
1855 chan.pending_htlcs.push({
1856 let mut out = HTLCOutput{
1859 amount_msat: 3000000,
1861 payment_hash: [0; 32],
1862 state: HTLCState::Committed,
1863 pending_forward_state: None,
1865 let mut sha = Sha256::new();
1866 sha.input(&hex_bytes("0303030303030303030303030303030303030303030303030303030303030303").unwrap());
1867 sha.result(&mut out.payment_hash);
1870 chan.pending_htlcs.push({
1871 let mut out = HTLCOutput{
1874 amount_msat: 4000000,
1876 payment_hash: [0; 32],
1877 state: HTLCState::Committed,
1878 pending_forward_state: None,
1880 let mut sha = Sha256::new();
1881 sha.input(&hex_bytes("0404040404040404040404040404040404040404040404040404040404040404").unwrap());
1882 sha.result(&mut out.payment_hash);
1887 // commitment tx with all five HTLCs untrimmed (minimum feerate)
1888 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
1889 chan.feerate_per_kw = 0;
1891 test_commitment!("304402204fd4928835db1ccdfc40f5c78ce9bd65249b16348df81f0c44328dcdefc97d630220194d3869c38bc732dd87d13d2958015e2fc16829e74cd4377f84d215c0b70606",
1892 "30440220275b0c325a5e9355650dc30c0eccfbc7efb23987c24b556b9dfdd40effca18d202206caceb2c067836c51f296740c7ae807ffcbfbf1dd3a0d56b6de9a5b247985f06",
1893 "02000000000101bef67e4e2fb9ddeeb3461973cd4c62abb35050b1add772995b820b584a488489000000000038b02b8007e80300000000000022002052bfef0479d7b293c27e0f1eb294bea154c63a3294ef092c19af51409bce0e2ad007000000000000220020403d394747cae42e98ff01734ad5c08f82ba123d3d9a620abda88989651e2ab5d007000000000000220020748eba944fedc8827f6b06bc44678f93c0f9e6078b35c6331ed31e75f8ce0c2db80b000000000000220020c20b5d1f8584fd90443e7b7b720136174fa4b9333c261d04dbbd012635c0f419a00f0000000000002200208c48d15160397c9731df9bc3b236656efb6665fbfe92b4a6878e88a499f741c4c0c62d0000000000160014ccf1af2f2aabee14bb40fa3851ab2301de843110e0a06a00000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e04004730440220275b0c325a5e9355650dc30c0eccfbc7efb23987c24b556b9dfdd40effca18d202206caceb2c067836c51f296740c7ae807ffcbfbf1dd3a0d56b6de9a5b247985f060147304402204fd4928835db1ccdfc40f5c78ce9bd65249b16348df81f0c44328dcdefc97d630220194d3869c38bc732dd87d13d2958015e2fc16829e74cd4377f84d215c0b7060601475221023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb21030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c152ae3e195220");
1895 assert_eq!(unsigned_tx.1.len(), 5);
1897 test_htlc_output!(0,
1898 "304402206a6e59f18764a5bf8d4fa45eebc591566689441229c918b480fb2af8cc6a4aeb02205248f273be447684b33e3c8d1d85a8e0ca9fa0bae9ae33f0527ada9c162919a6",
1899 "304402207cb324fa0de88f452ffa9389678127ebcf4cabe1dd848b8e076c1a1962bf34720220116ed922b12311bd602d67e60d2529917f21c5b82f25ff6506c0f87886b4dfd5",
1900 "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");
1902 test_htlc_output!(1,
1903 "3045022100d5275b3619953cb0c3b5aa577f04bc512380e60fa551762ce3d7a1bb7401cff9022037237ab0dac3fe100cde094e82e2bed9ba0ed1bb40154b48e56aa70f259e608b",
1904 "3045022100c89172099507ff50f4c925e6c5150e871fb6e83dd73ff9fbb72f6ce829a9633f02203a63821d9162e99f9be712a68f9e589483994feae2661e4546cd5b6cec007be5",
1905 "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");
1907 test_htlc_output!(2,
1908 "304402201b63ec807771baf4fdff523c644080de17f1da478989308ad13a58b51db91d360220568939d38c9ce295adba15665fa68f51d967e8ed14a007b751540a80b325f202",
1909 "3045022100def389deab09cee69eaa1ec14d9428770e45bcbe9feb46468ecf481371165c2f022015d2e3c46600b2ebba8dcc899768874cc6851fd1ecb3fffd15db1cc3de7e10da",
1910 "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");
1912 test_htlc_output!(3,
1913 "3045022100daee1808f9861b6c3ecd14f7b707eca02dd6bdfc714ba2f33bc8cdba507bb182022026654bf8863af77d74f51f4e0b62d461a019561bb12acb120d3f7195d148a554",
1914 "30440220643aacb19bbb72bd2b635bc3f7375481f5981bace78cdd8319b2988ffcc6704202203d27784ec8ad51ed3bd517a05525a5139bb0b755dd719e0054332d186ac08727",
1915 "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");
1917 test_htlc_output!(4,
1918 "304402207e0410e45454b0978a623f36a10626ef17b27d9ad44e2760f98cfa3efb37924f0220220bd8acd43ecaa916a80bd4f919c495a2c58982ce7c8625153f8596692a801d",
1919 "30440220549e80b4496803cbc4a1d09d46df50109f546d43fbbf86cd90b174b1484acd5402205f12a4f995cb9bded597eabfee195a285986aa6d93ae5bb72507ebc6a4e2349e",
1920 "020000000001018154ecccf11a5fb56c39654c4deb4d2296f83c69268280b94d021370c94e219704000000000000000001a00f0000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e050047304402207e0410e45454b0978a623f36a10626ef17b27d9ad44e2760f98cfa3efb37924f0220220bd8acd43ecaa916a80bd4f919c495a2c58982ce7c8625153f8596692a801d014730440220549e80b4496803cbc4a1d09d46df50109f546d43fbbf86cd90b174b1484acd5402205f12a4f995cb9bded597eabfee195a285986aa6d93ae5bb72507ebc6a4e2349e012004040404040404040404040404040404040404040404040404040404040404048a76a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c8201208763a91418bc1a114ccf9c052d3d23e28d3b0a9d1227434288527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae677502f801b175ac686800000000");
1924 // commitment tx with seven outputs untrimmed (maximum feerate)
1925 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
1926 chan.feerate_per_kw = 647;
1928 test_commitment!("3045022100a5c01383d3ec646d97e40f44318d49def817fcd61a0ef18008a665b3e151785502203e648efddd5838981ef55ec954be69c4a652d021e6081a100d034de366815e9b",
1929 "304502210094bfd8f5572ac0157ec76a9551b6c5216a4538c07cd13a51af4a54cb26fa14320220768efce8ce6f4a5efac875142ff19237c011343670adf9c7ac69704a120d1163",
1930 "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");
1932 assert_eq!(unsigned_tx.1.len(), 5);
1934 test_htlc_output!(0,
1935 "30440220385a5afe75632f50128cbb029ee95c80156b5b4744beddc729ad339c9ca432c802202ba5f48550cad3379ac75b9b4fedb86a35baa6947f16ba5037fb8b11ab343740",
1936 "304402205999590b8a79fa346e003a68fd40366397119b2b0cdf37b149968d6bc6fbcc4702202b1e1fb5ab7864931caed4e732c359e0fe3d86a548b557be2246efb1708d579a",
1937 "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");
1939 test_htlc_output!(1,
1940 "304402207ceb6678d4db33d2401fdc409959e57c16a6cb97a30261d9c61f29b8c58d34b90220084b4a17b4ca0e86f2d798b3698ca52de5621f2ce86f80bed79afa66874511b0",
1941 "304402207ff03eb0127fc7c6cae49cc29e2a586b98d1e8969cf4a17dfa50b9c2647720b902205e2ecfda2252956c0ca32f175080e75e4e390e433feb1f8ce9f2ba55648a1dac",
1942 "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");
1944 test_htlc_output!(2,
1945 "304402206a401b29a0dff0d18ec903502c13d83e7ec019450113f4a7655a4ce40d1f65ba0220217723a084e727b6ca0cc8b6c69c014a7e4a01fcdcba3e3993f462a3c574d833",
1946 "3045022100d50d067ca625d54e62df533a8f9291736678d0b86c28a61bb2a80cf42e702d6e02202373dde7e00218eacdafb9415fe0e1071beec1857d1af3c6a201a44cbc47c877",
1947 "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");
1949 test_htlc_output!(3,
1950 "30450221009b1c987ba599ee3bde1dbca776b85481d70a78b681a8d84206723e2795c7cac002207aac84ad910f8598c4d1c0ea2e3399cf6627a4e3e90131315bc9f038451ce39d",
1951 "3045022100db9dc65291077a52728c622987e9895b7241d4394d6dcb916d7600a3e8728c22022036ee3ee717ba0bb5c45ee84bc7bbf85c0f90f26ae4e4a25a6b4241afa8a3f1cb",
1952 "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");
1954 test_htlc_output!(4,
1955 "3045022100cc28030b59f0914f45b84caa983b6f8effa900c952310708c2b5b00781117022022027ba2ccdf94d03c6d48b327f183f6e28c8a214d089b9227f94ac4f85315274f0",
1956 "304402202d1a3c0d31200265d2a2def2753ead4959ae20b4083e19553acfffa5dfab60bf022020ede134149504e15b88ab261a066de49848411e15e70f9e6a5462aec2949f8f",
1957 "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");
1961 // commitment tx with six outputs untrimmed (minimum feerate)
1962 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
1963 chan.feerate_per_kw = 648;
1965 test_commitment!("3044022072714e2fbb93cdd1c42eb0828b4f2eff143f717d8f26e79d6ada4f0dcb681bbe02200911be4e5161dd6ebe59ff1c58e1997c4aea804f81db6b698821db6093d7b057",
1966 "3045022100a2270d5950c89ae0841233f6efea9c951898b301b2e89e0adbd2c687b9f32efa02207943d90f95b9610458e7c65a576e149750ff3accaacad004cd85e70b235e27de",
1967 "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");
1969 assert_eq!(unsigned_tx.1.len(), 4);
1971 test_htlc_output!(0,
1972 "3044022062ef2e77591409d60d7817d9bb1e71d3c4a2931d1a6c7c8307422c84f001a251022022dad9726b0ae3fe92bda745a06f2c00f92342a186d84518588cf65f4dfaada8",
1973 "3045022100a4c574f00411dd2f978ca5cdc1b848c311cd7849c087ad2f21a5bce5e8cc5ae90220090ae39a9bce2fb8bc879d7e9f9022df249f41e25e51f1a9bf6447a9eeffc098",
1974 "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");
1976 test_htlc_output!(1,
1977 "3045022100e968cbbb5f402ed389fdc7f6cd2a80ed650bb42c79aeb2a5678444af94f6c78502204b47a1cb24ab5b0b6fe69fe9cfc7dba07b9dd0d8b95f372c1d9435146a88f8d4",
1978 "304402207679cf19790bea76a733d2fa0672bd43ab455687a068f815a3d237581f57139a0220683a1a799e102071c206b207735ca80f627ab83d6616b4bcd017c5d79ef3e7d0",
1979 "02000000000101579c183eca9e8236a5d7f5dcd79cfec32c497fdc0ec61533cde99ecd436cadd10100000000000000000109060000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e0500483045022100e968cbbb5f402ed389fdc7f6cd2a80ed650bb42c79aeb2a5678444af94f6c78502204b47a1cb24ab5b0b6fe69fe9cfc7dba07b9dd0d8b95f372c1d9435146a88f8d40147304402207679cf19790bea76a733d2fa0672bd43ab455687a068f815a3d237581f57139a0220683a1a799e102071c206b207735ca80f627ab83d6616b4bcd017c5d79ef3e7d0012001010101010101010101010101010101010101010101010101010101010101018a76a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c8201208763a9144b6b2e5444c2639cc0fb7bcea5afba3f3cdce23988527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae677502f501b175ac686800000000");
1981 test_htlc_output!(2,
1982 "3045022100aa91932e305292cf9969cc23502bbf6cef83a5df39c95ad04a707c4f4fed5c7702207099fc0f3a9bfe1e7683c0e9aa5e76c5432eb20693bf4cb182f04d383dc9c8c2",
1983 "304402200df76fea718745f3c529bac7fd37923e7309ce38b25c0781e4cf514dd9ef8dc802204172295739dbae9fe0474dcee3608e3433b4b2af3a2e6787108b02f894dcdda3",
1984 "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");
1986 test_htlc_output!(3,
1987 "3044022035cac88040a5bba420b1c4257235d5015309113460bc33f2853cd81ca36e632402202fc94fd3e81e9d34a9d01782a0284f3044370d03d60f3fc041e2da088d2de58f",
1988 "304402200daf2eb7afd355b4caf6fb08387b5f031940ea29d1a9f35071288a839c9039e4022067201b562456e7948616c13acb876b386b511599b58ac1d94d127f91c50463a6",
1989 "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");
1993 // commitment tx with six outputs untrimmed (maximum feerate)
1994 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
1995 chan.feerate_per_kw = 2069;
1997 test_commitment!("3044022001d55e488b8b035b2dd29d50b65b530923a416d47f377284145bc8767b1b6a75022019bb53ddfe1cefaf156f924777eaaf8fdca1810695a7d0a247ad2afba8232eb4",
1998 "304402203ca8f31c6a47519f83255dc69f1894d9a6d7476a19f498d31eaf0cd3a85eeb63022026fd92dc752b33905c4c838c528b692a8ad4ced959990b5d5ee2ff940fa90eea",
1999 "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");
2001 assert_eq!(unsigned_tx.1.len(), 4);
2003 test_htlc_output!(0,
2004 "3045022100d1cf354de41c1369336cf85b225ed033f1f8982a01be503668df756a7e668b66022001254144fb4d0eecc61908fccc3388891ba17c5d7a1a8c62bdd307e5a513f992",
2005 "3044022056eb1af429660e45a1b0b66568cb8c4a3aa7e4c9c292d5d6c47f86ebf2c8838f022065c3ac4ebe980ca7a41148569be4ad8751b0a724a41405697ec55035dae66402",
2006 "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");
2008 test_htlc_output!(1,
2009 "3045022100d065569dcb94f090345402736385efeb8ea265131804beac06dd84d15dd2d6880220664feb0b4b2eb985fadb6ec7dc58c9334ea88ce599a9be760554a2d4b3b5d9f4",
2010 "3045022100914bb232cd4b2690ee3d6cb8c3713c4ac9c4fb925323068d8b07f67c8541f8d9022057152f5f1615b793d2d45aac7518989ae4fe970f28b9b5c77504799d25433f7f",
2011 "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");
2013 test_htlc_output!(2,
2014 "3045022100d4e69d363de993684eae7b37853c40722a4c1b4a7b588ad7b5d8a9b5006137a102207a069c628170ee34be5612747051bdcc087466dbaa68d5756ea81c10155aef18",
2015 "304402200e362443f7af830b419771e8e1614fc391db3a4eb799989abfc5ab26d6fcd032022039ab0cad1c14dfbe9446bf847965e56fe016e0cbcf719fd18c1bfbf53ecbd9f9",
2016 "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");
2018 test_htlc_output!(3,
2019 "30450221008ec888e36e4a4b3dc2ed6b823319855b2ae03006ca6ae0d9aa7e24bfc1d6f07102203b0f78885472a67ff4fe5916c0bb669487d659527509516fc3a08e87a2cc0a7c",
2020 "304402202c3e14282b84b02705dfd00a6da396c9fe8a8bcb1d3fdb4b20a4feba09440e8b02202b058b39aa9b0c865b22095edcd9ff1f71bbfe20aa4993755e54d042755ed0d5",
2021 "02000000000101ca94a9ad516ebc0c4bdd7b6254871babfa978d5accafb554214137d398bfcf6a03000000000000000001f2090000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e05004830450221008ec888e36e4a4b3dc2ed6b823319855b2ae03006ca6ae0d9aa7e24bfc1d6f07102203b0f78885472a67ff4fe5916c0bb669487d659527509516fc3a08e87a2cc0a7c0147304402202c3e14282b84b02705dfd00a6da396c9fe8a8bcb1d3fdb4b20a4feba09440e8b02202b058b39aa9b0c865b22095edcd9ff1f71bbfe20aa4993755e54d042755ed0d5012004040404040404040404040404040404040404040404040404040404040404048a76a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c8201208763a91418bc1a114ccf9c052d3d23e28d3b0a9d1227434288527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae677502f801b175ac686800000000");
2025 // commitment tx with five outputs untrimmed (minimum feerate)
2026 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
2027 chan.feerate_per_kw = 2070;
2029 test_commitment!("3045022100f2377f7a67b7fc7f4e2c0c9e3a7de935c32417f5668eda31ea1db401b7dc53030220415fdbc8e91d0f735e70c21952342742e25249b0d062d43efbfc564499f37526",
2030 "30440220443cb07f650aebbba14b8bc8d81e096712590f524c5991ac0ed3bbc8fd3bd0c7022028a635f548e3ca64b19b69b1ea00f05b22752f91daf0b6dab78e62ba52eb7fd0",
2031 "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");
2033 assert_eq!(unsigned_tx.1.len(), 3);
2035 test_htlc_output!(0,
2036 "3045022100eed143b1ee4bed5dc3cde40afa5db3e7354cbf9c44054b5f713f729356f08cf7022077161d171c2bbd9badf3c9934de65a4918de03bbac1450f715275f75b103f891",
2037 "3045022100a0d043ed533e7fb1911e0553d31a8e2f3e6de19dbc035257f29d747c5e02f1f5022030cd38d8e84282175d49c1ebe0470db3ebd59768cf40780a784e248a43904fb8",
2038 "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");
2040 test_htlc_output!(1,
2041 "3044022071e9357619fd8d29a411dc053b326a5224c5d11268070e88ecb981b174747c7a02202b763ae29a9d0732fa8836dd8597439460b50472183f420021b768981b4f7cf6",
2042 "3045022100adb1d679f65f96178b59f23ed37d3b70443118f345224a07ecb043eee2acc157022034d24524fe857144a3bcfff3065a9994d0a6ec5f11c681e49431d573e242612d",
2043 "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");
2045 test_htlc_output!(2,
2046 "3045022100c9458a4d2cbb741705577deb0a890e5cb90ee141be0400d3162e533727c9cb2102206edcf765c5dc5e5f9b976ea8149bf8607b5a0efb30691138e1231302b640d2a4",
2047 "304402200831422aa4e1ee6d55e0b894201770a8f8817a189356f2d70be76633ffa6a6f602200dd1b84a4855dc6727dd46c98daae43dfc70889d1ba7ef0087529a57c06e5e04",
2048 "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");
2052 // commitment tx with five outputs untrimmed (maximum feerate)
2053 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
2054 chan.feerate_per_kw = 2194;
2056 test_commitment!("3045022100d33c4e541aa1d255d41ea9a3b443b3b822ad8f7f86862638aac1f69f8f760577022007e2a18e6931ce3d3a804b1c78eda1de17dbe1fb7a95488c9a4ec86203953348",
2057 "304402203b1b010c109c2ecbe7feb2d259b9c4126bd5dc99ee693c422ec0a5781fe161ba0220571fe4e2c649dea9c7aaf7e49b382962f6a3494963c97d80fef9a430ca3f7061",
2058 "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");
2060 assert_eq!(unsigned_tx.1.len(), 3);
2062 test_htlc_output!(0,
2063 "30450221009ed2f0a67f99e29c3c8cf45c08207b765980697781bb727fe0b1416de0e7622902206052684229bc171419ed290f4b615c943f819c0262414e43c5b91dcf72ddcf44",
2064 "3044022004ad5f04ae69c71b3b141d4db9d0d4c38d84009fb3cfeeae6efdad414487a9a0022042d3fe1388c1ff517d1da7fb4025663d372c14728ed52dc88608363450ff6a2f",
2065 "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");
2067 test_htlc_output!(1,
2068 "30440220155d3b90c67c33a8321996a9be5b82431b0c126613be751d400669da9d5c696702204318448bcd48824439d2c6a70be6e5747446be47ff45977cf41672bdc9b6b12d",
2069 "304402201707050c870c1f77cc3ed58d6d71bf281de239e9eabd8ef0955bad0d7fe38dcc02204d36d80d0019b3a71e646a08fa4a5607761d341ae8be371946ebe437c289c915",
2070 "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");
2072 test_htlc_output!(2,
2073 "3045022100a12a9a473ece548584aabdd051779025a5ed4077c4b7aa376ec7a0b1645e5a48022039490b333f53b5b3e2ddde1d809e492cba2b3e5fc3a436cd3ffb4cd3d500fa5a",
2074 "3045022100ff200bc934ab26ce9a559e998ceb0aee53bc40368e114ab9d3054d9960546e2802202496856ca163ac12c143110b6b3ac9d598df7254f2e17b3b94c3ab5301f4c3b0",
2075 "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");
2079 // commitment tx with four outputs untrimmed (minimum feerate)
2080 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
2081 chan.feerate_per_kw = 2195;
2083 test_commitment!("304402205e2f76d4657fb732c0dfc820a18a7301e368f5799e06b7828007633741bda6df0220458009ae59d0c6246065c419359e05eb2a4b4ef4a1b310cc912db44eb7924298",
2084 "304402203b12d44254244b8ff3bb4129b0920fd45120ab42f553d9976394b099d500c99e02205e95bb7a3164852ef0c48f9e0eaf145218f8e2c41251b231f03cbdc4f29a5429",
2085 "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");
2087 assert_eq!(unsigned_tx.1.len(), 2);
2089 test_htlc_output!(0,
2090 "3045022100a8a78fa1016a5c5c3704f2e8908715a3cef66723fb95f3132ec4d2d05cd84fb4022025ac49287b0861ec21932405f5600cbce94313dbde0e6c5d5af1b3366d8afbfc",
2091 "3045022100be6ae1977fd7b630a53623f3f25c542317ccfc2b971782802a4f1ef538eb22b402207edc4d0408f8f38fd3c7365d1cfc26511b7cd2d4fecd8b005fba3cd5bc704390",
2092 "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");
2094 test_htlc_output!(1,
2095 "3045022100e769cb156aa2f7515d126cef7a69968629620ce82afcaa9e210969de6850df4602200b16b3f3486a229a48aadde520dbee31ae340dbadaffae74fbb56681fef27b92",
2096 "30440220665b9cb4a978c09d1ca8977a534999bc8a49da624d0c5439451dd69cde1a003d022070eae0620f01f3c1bd029cc1488da13fb40fdab76f396ccd335479a11c5276d8",
2097 "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");
2101 // commitment tx with four outputs untrimmed (maximum feerate)
2102 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
2103 chan.feerate_per_kw = 3702;
2105 test_commitment!("3045022100c1a3b0b60ca092ed5080121f26a74a20cec6bdee3f8e47bae973fcdceb3eda5502207d467a9873c939bf3aa758014ae67295fedbca52412633f7e5b2670fc7c381c1",
2106 "304402200e930a43c7951162dc15a2b7344f48091c74c70f7024e7116e900d8bcfba861c022066fa6cbda3929e21daa2e7e16a4b948db7e8919ef978402360d1095ffdaff7b0",
2107 "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");
2109 assert_eq!(unsigned_tx.1.len(), 2);
2111 test_htlc_output!(0,
2112 "3045022100dfb73b4fe961b31a859b2bb1f4f15cabab9265016dd0272323dc6a9e85885c54022059a7b87c02861ee70662907f25ce11597d7b68d3399443a831ae40e777b76bdb",
2113 "304402202765b9c9ece4f127fa5407faf66da4c5ce2719cdbe47cd3175fc7d48b482e43d02205605125925e07bad1e41c618a4b434d72c88a164981c4b8af5eaf4ee9142ec3a",
2114 "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");
2116 test_htlc_output!(1,
2117 "3045022100ea9dc2a7c3c3640334dab733bb4e036e32a3106dc707b24227874fa4f7da746802204d672f7ac0fe765931a8df10b81e53a3242dd32bd9dc9331eb4a596da87954e9",
2118 "30440220048a41c660c4841693de037d00a407810389f4574b3286afb7bc392a438fa3f802200401d71fa87c64fe621b49ac07e3bf85157ac680acb977124da28652cc7f1a5c",
2119 "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");
2123 // commitment tx with three outputs untrimmed (minimum feerate)
2124 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
2125 chan.feerate_per_kw = 3703;
2127 test_commitment!("30450221008b7c191dd46893b67b628e618d2dc8e81169d38bade310181ab77d7c94c6675e02203b4dd131fd7c9deb299560983dcdc485545c98f989f7ae8180c28289f9e6bdb0",
2128 "3044022047305531dd44391dce03ae20f8735005c615eb077a974edb0059ea1a311857d602202e0ed6972fbdd1e8cb542b06e0929bc41b2ddf236e04cb75edd56151f4197506",
2129 "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");
2131 assert_eq!(unsigned_tx.1.len(), 1);
2133 test_htlc_output!(0,
2134 "3044022044f65cf833afdcb9d18795ca93f7230005777662539815b8a601eeb3e57129a902206a4bf3e53392affbba52640627defa8dc8af61c958c9e827b2798ab45828abdd",
2135 "3045022100b94d931a811b32eeb885c28ddcf999ae1981893b21dd1329929543fe87ce793002206370107fdd151c5f2384f9ceb71b3107c69c74c8ed5a28a94a4ab2d27d3b0724",
2136 "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");
2140 // commitment tx with three outputs untrimmed (maximum feerate)
2141 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
2142 chan.feerate_per_kw = 4914;
2144 test_commitment!("304402206d6cb93969d39177a09d5d45b583f34966195b77c7e585cf47ac5cce0c90cefb022031d71ae4e33a4e80df7f981d696fbdee517337806a3c7138b7491e2cbb077a0e",
2145 "304402206a2679efa3c7aaffd2a447fd0df7aba8792858b589750f6a1203f9259173198a022008d52a0e77a99ab533c36206cb15ad7aeb2aa72b93d4b571e728cb5ec2f6fe26",
2146 "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");
2148 assert_eq!(unsigned_tx.1.len(), 1);
2150 test_htlc_output!(0,
2151 "3045022100fcb38506bfa11c02874092a843d0cc0a8613c23b639832564a5f69020cb0f6ba02206508b9e91eaa001425c190c68ee5f887e1ad5b1b314002e74db9dbd9e42dbecf",
2152 "304502210086e76b460ddd3cea10525fba298405d3fe11383e56966a5091811368362f689a02200f72ee75657915e0ede89c28709acd113ede9e1b7be520e3bc5cda425ecd6e68",
2153 "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");
2157 // commitment tx with two outputs untrimmed (minimum feerate)
2158 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
2159 chan.feerate_per_kw = 4915;
2161 test_commitment!("304402200769ba89c7330dfa4feba447b6e322305f12ac7dac70ec6ba997ed7c1b598d0802204fe8d337e7fee781f9b7b1a06e580b22f4f79d740059560191d7db53f8765552",
2162 "3045022100a012691ba6cea2f73fa8bac37750477e66363c6d28813b0bb6da77c8eb3fb0270220365e99c51304b0b1a6ab9ea1c8500db186693e39ec1ad5743ee231b0138384b9",
2163 "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");
2165 assert_eq!(unsigned_tx.1.len(), 0);
2169 // commitment tx with two outputs untrimmed (maximum feerate)
2170 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
2171 chan.feerate_per_kw = 9651180;
2173 test_commitment!("3044022037f83ff00c8e5fb18ae1f918ffc24e54581775a20ff1ae719297ef066c71caa9022039c529cccd89ff6c5ed1db799614533844bd6d101da503761c45c713996e3bbd",
2174 "30440220514f977bf7edc442de8ce43ace9686e5ebdc0f893033f13e40fb46c8b8c6e1f90220188006227d175f5c35da0b092c57bea82537aed89f7778204dc5bacf4f29f2b9",
2175 "02000000000101bef67e4e2fb9ddeeb3461973cd4c62abb35050b1add772995b820b584a488489000000000038b02b800222020000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80ec0c62d0000000000160014ccf1af2f2aabee14bb40fa3851ab2301de84311004004730440220514f977bf7edc442de8ce43ace9686e5ebdc0f893033f13e40fb46c8b8c6e1f90220188006227d175f5c35da0b092c57bea82537aed89f7778204dc5bacf4f29f2b901473044022037f83ff00c8e5fb18ae1f918ffc24e54581775a20ff1ae719297ef066c71caa9022039c529cccd89ff6c5ed1db799614533844bd6d101da503761c45c713996e3bbd01475221023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb21030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c152ae3e195220");
2177 assert_eq!(unsigned_tx.1.len(), 0);
2181 // commitment tx with one output untrimmed (minimum feerate)
2182 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
2183 chan.feerate_per_kw = 9651181;
2185 test_commitment!("3044022064901950be922e62cbe3f2ab93de2b99f37cff9fc473e73e394b27f88ef0731d02206d1dfa227527b4df44a07599289e207d6fd9cca60c0365682dcd3deaf739567e",
2186 "3044022031a82b51bd014915fe68928d1abf4b9885353fb896cac10c3fdd88d7f9c7f2e00220716bda819641d2c63e65d3549b6120112e1aeaf1742eed94a471488e79e206b1",
2187 "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");
2189 assert_eq!(unsigned_tx.1.len(), 0);
2193 // commitment tx with fee greater than funder amount
2194 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
2195 chan.feerate_per_kw = 9651936;
2197 test_commitment!("3044022064901950be922e62cbe3f2ab93de2b99f37cff9fc473e73e394b27f88ef0731d02206d1dfa227527b4df44a07599289e207d6fd9cca60c0365682dcd3deaf739567e",
2198 "3044022031a82b51bd014915fe68928d1abf4b9885353fb896cac10c3fdd88d7f9c7f2e00220716bda819641d2c63e65d3549b6120112e1aeaf1742eed94a471488e79e206b1",
2199 "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");
2201 assert_eq!(unsigned_tx.1.len(), 0);
2206 fn test_per_commitment_secret_gen() {
2207 // Test vectors from BOLT 3 Appendix D:
2209 let mut seed = [0; 32];
2210 seed[0..32].clone_from_slice(&hex_bytes("0000000000000000000000000000000000000000000000000000000000000000").unwrap());
2211 assert_eq!(chan_utils::build_commitment_secret(seed, 281474976710655),
2212 hex_bytes("02a40c85b6f28da08dfdbe0926c53fab2de6d28c10301f8f7c4073d5e42e3148").unwrap()[..]);
2214 seed[0..32].clone_from_slice(&hex_bytes("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF").unwrap());
2215 assert_eq!(chan_utils::build_commitment_secret(seed, 281474976710655),
2216 hex_bytes("7cc854b54e3e0dcdb010d7a3fee464a9687be6e8db3be6854c475621e007a5dc").unwrap()[..]);
2218 assert_eq!(chan_utils::build_commitment_secret(seed, 0xaaaaaaaaaaa),
2219 hex_bytes("56f4008fb007ca9acf0e15b054d5c9fd12ee06cea347914ddbaed70d1c13a528").unwrap()[..]);
2221 assert_eq!(chan_utils::build_commitment_secret(seed, 0x555555555555),
2222 hex_bytes("9015daaeb06dba4ccc05b91b2f73bd54405f2be9f217fbacd3c5ac2e62327d31").unwrap()[..]);
2224 seed[0..32].clone_from_slice(&hex_bytes("0101010101010101010101010101010101010101010101010101010101010101").unwrap());
2225 assert_eq!(chan_utils::build_commitment_secret(seed, 1),
2226 hex_bytes("915c75942a26bb3a433a8ce2cb0427c29ec6c1775cfc78328b57f6ba7bfeaa9c").unwrap()[..]);
2230 fn test_key_derivation() {
2231 // Test vectors from BOLT 3 Appendix E:
2232 let secp_ctx = Secp256k1::new();
2234 let base_secret = SecretKey::from_slice(&secp_ctx, &hex_bytes("000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f").unwrap()[..]).unwrap();
2235 let per_commitment_secret = SecretKey::from_slice(&secp_ctx, &hex_bytes("1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100").unwrap()[..]).unwrap();
2237 let base_point = PublicKey::from_secret_key(&secp_ctx, &base_secret).unwrap();
2238 assert_eq!(base_point.serialize()[..], hex_bytes("036d6caac248af96f6afa7f904f550253a0f3ef3f5aa2fe6838a95b216691468e2").unwrap()[..]);
2240 let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &per_commitment_secret).unwrap();
2241 assert_eq!(per_commitment_point.serialize()[..], hex_bytes("025f7117a78150fe2ef97db7cfc83bd57b2e2c0d0dd25eaf467a4a1c2a45ce1486").unwrap()[..]);
2243 assert_eq!(chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &base_point).unwrap().serialize()[..],
2244 hex_bytes("0235f2dbfaa89b57ec7b055afe29849ef7ddfeb1cefdb9ebdc43f5494984db29e5").unwrap()[..]);
2246 assert_eq!(chan_utils::derive_private_key(&secp_ctx, &per_commitment_point, &base_secret).unwrap(),
2247 SecretKey::from_slice(&secp_ctx, &hex_bytes("cbced912d3b21bf196a766651e436aff192362621ce317704ea2f75d87e7be0f").unwrap()[..]).unwrap());
2249 assert_eq!(chan_utils::derive_public_revocation_key(&secp_ctx, &per_commitment_point, &base_point).unwrap().serialize()[..],
2250 hex_bytes("02916e326636d19c33f13e8c0c3a03dd157f332f3e99c317c141dd865eb01f8ff0").unwrap()[..]);
2252 assert_eq!(chan_utils::derive_private_revocation_key(&secp_ctx, &per_commitment_secret, &base_secret).unwrap(),
2253 SecretKey::from_slice(&secp_ctx, &hex_bytes("d09ffff62ddb2297ab000cc85bcb4283fdeb6aa052affbc9dddcf33b61078110").unwrap()[..]).unwrap());