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support option_static_remotekey

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This commit is contained in:
ThomasV
2019-12-13 14:07:11 +01:00
parent 47d14c579b
commit 2255b07157
5 changed files with 54 additions and 23 deletions
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41
electrum/lnsweep.py
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@@ -324,7 +324,9 @@ def create_sweeptxs_for_their_ctx(*, chan: 'Channel', ctx: Transaction,
witness_script = bh2u(make_commitment_output_to_local_witness_script(
our_revocation_pubkey, our_conf.to_self_delay, their_delayed_pubkey))
to_local_address = redeem_script_to_address('p2wsh', witness_script)
our_payment_pubkey = derive_pubkey(our_conf.payment_basepoint.pubkey, their_pcp)
# to remote address
bpk = our_conf.payment_basepoint.pubkey
our_payment_pubkey = bpk if chan.is_static_remotekey_enabled() else derive_pubkey(bpk, their_pcp)
to_remote_address = make_commitment_output_to_remote_address(our_payment_pubkey)
# test if this is their ctx
_logger.debug(f'testing their ctx: {to_local_address} {to_remote_address}')
@@ -345,26 +347,27 @@ def create_sweeptxs_for_their_ctx(*, chan: 'Channel', ctx: Transaction,
our_htlc_privkey = derive_privkey(secret=int.from_bytes(our_conf.htlc_basepoint.privkey, 'big'), per_commitment_point=their_pcp)
our_htlc_privkey = ecc.ECPrivkey.from_secret_scalar(our_htlc_privkey)
their_htlc_pubkey = derive_pubkey(their_conf.htlc_basepoint.pubkey, their_pcp)
our_payment_bp_privkey = ecc.ECPrivkey(our_conf.payment_basepoint.privkey)
our_payment_privkey = derive_privkey(our_payment_bp_privkey.secret_scalar, their_pcp)
our_payment_privkey = ecc.ECPrivkey.from_secret_scalar(our_payment_privkey)
assert our_payment_pubkey == our_payment_privkey.get_public_key_bytes(compressed=True)
# to_local is handled by lnwatcher
# to_remote
output_idxs = ctx.get_output_idxs_from_address(to_remote_address)
if output_idxs:
output_idx = output_idxs.pop()
prevout = ctx.txid() + ':%d'%output_idx
sweep_tx = lambda: create_sweeptx_their_ctx_to_remote(
sweep_address=sweep_address,
ctx=ctx,
output_idx=output_idx,
our_payment_privkey=our_payment_privkey,
config=chan.lnworker.config)
txs[prevout] = SweepInfo(name='their_ctx_to_remote',
csv_delay=0,
cltv_expiry=0,
gen_tx=sweep_tx)
if not chan.is_static_remotekey_enabled():
our_payment_bp_privkey = ecc.ECPrivkey(our_conf.payment_basepoint.privkey)
our_payment_privkey = derive_privkey(our_payment_bp_privkey.secret_scalar, their_pcp)
our_payment_privkey = ecc.ECPrivkey.from_secret_scalar(our_payment_privkey)
assert our_payment_pubkey == our_payment_privkey.get_public_key_bytes(compressed=True)
output_idxs = ctx.get_output_idxs_from_address(to_remote_address)
if output_idxs:
output_idx = output_idxs.pop()
prevout = ctx.txid() + ':%d'%output_idx
sweep_tx = lambda: create_sweeptx_their_ctx_to_remote(
sweep_address=sweep_address,
ctx=ctx,
output_idx=output_idx,
our_payment_privkey=our_payment_privkey,
config=chan.lnworker.config)
txs[prevout] = SweepInfo(name='their_ctx_to_remote',
csv_delay=0,
cltv_expiry=0,
gen_tx=sweep_tx)
# HTLCs
def create_sweeptx_for_htlc(htlc: 'UpdateAddHtlc', is_received_htlc: bool,
ctx_output_idx: int) -> None: