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lnbase: add TODO explaining how to verify htlc_signature given to us

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Janus 2018-04-25 18:01:52 +02:00 • committed by SomberNight
parent a96b88738f
commit a84b2c146b
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7
lib/lnbase.py
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@ -912,6 +912,13 @@ class Peer(PrintError):
if not bitcoin.verify_signature(remote_funding_pubkey, commitment_signed_msg["signature"], pre_hash): if not bitcoin.verify_signature(remote_funding_pubkey, commitment_signed_msg["signature"], pre_hash):
raise Exception('failed verifying signature of updated commitment transaction') raise Exception('failed verifying signature of updated commitment transaction')
htlc_sigs_len = len(commitment_signed_msg["htlc_signature"])
if htlc_sigs_len != 64:
raise Exception("unexpected number of htlc signatures: " + str(htlc_sigs_len))
# TODO: construct their commitment transaction (A), check that htlc_signature signs
# the HTLC transaction (B) that spends from the offered HTLC output in (A)
self.send_message(gen_msg("revoke_and_ack", channel_id=channel_id, per_commitment_secret=local_last_per_commitment_secret, next_per_commitment_point=local_next_per_commitment_point)) self.send_message(gen_msg("revoke_and_ack", channel_id=channel_id, per_commitment_secret=local_last_per_commitment_secret, next_per_commitment_point=local_next_per_commitment_point))
async def fulfill_htlc(self, channel_id, htlc_id, payment_preimage): async def fulfill_htlc(self, channel_id, htlc_id, payment_preimage):