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lnbase: use sign_next_commitment for initial remote_ctx

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Janus 2018-06-13 16:27:44 +02:00 • committed by SomberNight
parent ab0a609ef7
commit 6516d5358d
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1 changed files with 14 additions and 26 deletions
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40
lib/lnbase.py
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@ -866,36 +866,11 @@ class Peer(PrintError):
funding_tx = wallet.mktx([funding_output], password, config, 1000)
funding_txid = funding_tx.txid()
funding_index = funding_tx.outputs().index(funding_output)
# derive keys
local_payment_pubkey = derive_pubkey(local_config.payment_basepoint.pubkey, remote_per_commitment_point)
#local_payment_privkey = derive_privkey(base_secret, remote_per_commitment_point)
remote_payment_pubkey = derive_pubkey(remote_config.payment_basepoint.pubkey, per_commitment_point_first)
revocation_pubkey = derive_blinded_pubkey(local_config.revocation_basepoint.pubkey, remote_per_commitment_point)
remote_revocation_pubkey = derive_blinded_pubkey(remote_config.revocation_basepoint.pubkey, per_commitment_point_first)
local_delayedpubkey = derive_pubkey(local_config.delayed_basepoint.pubkey, per_commitment_point_first)
remote_delayedpubkey = derive_pubkey(remote_config.delayed_basepoint.pubkey, remote_per_commitment_point)
# compute amounts
htlcs = []
local_amount = funding_sat*1000 - push_msat
remote_amount = push_msat
# remote commitment transaction
remote_ctx = make_commitment(
0,
remote_config.multisig_key.pubkey, local_config.multisig_key.pubkey, local_payment_pubkey,
local_config.payment_basepoint.pubkey, remote_config.payment_basepoint.pubkey,
revocation_pubkey, remote_delayedpubkey, local_config.to_self_delay,
funding_txid, funding_index, funding_sat,
remote_amount, local_amount, remote_config.dust_limit_sat, local_feerate, False, we_are_initiator=True, htlcs=[])
sig_64 = sign_and_get_sig_string(remote_ctx, local_config, remote_config)
channel_id, funding_txid_bytes = channel_id_from_funding_tx(funding_txid, funding_index)
self.send_message(gen_msg("funding_created",
temporary_channel_id=temp_channel_id,
funding_txid=funding_txid_bytes,
funding_output_index=funding_index,
signature=sig_64))
payload = await self.funding_signed[channel_id].get()
self.print_error('received funding_signed')
remote_sig = payload['signature']
their_revocation_store = RevocationStore()
chan = OpenChannel(
node_id=self.pubkey,
@ -921,7 +896,20 @@ class Peer(PrintError):
),
constraints=ChannelConstraints(capacity=funding_sat, feerate=local_feerate, is_initiator=True, funding_txn_minimum_depth=funding_txn_minimum_depth)
)
m = HTLCStateMachine(chan._replace(local_state=chan.local_state._replace(ctn=-1)))
m = HTLCStateMachine(chan._replace(
local_state=chan.local_state._replace(ctn=-1),
remote_state=chan.remote_state._replace(
next_per_commitment_point=remote_per_commitment_point,
last_per_commitment_point=None, ctn=-1)))
sig_64, _ = m.sign_next_commitment()
self.send_message(gen_msg("funding_created",
temporary_channel_id=temp_channel_id,
funding_txid=funding_txid_bytes,
funding_output_index=funding_index,
signature=sig_64))
payload = await self.funding_signed[channel_id].get()
self.print_error('received funding_signed')
remote_sig = payload['signature']
m.receive_new_commitment(remote_sig, [])
# broadcast funding tx
success, _txid = self.network.broadcast_transaction(funding_tx)