AaronFiore/electrum
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persist channel db on disk. verify channel gossip sigs.

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This commit is contained in:
SomberNight
2018-07-23 20:49:44 +02:00
committed by ThomasV
parent c1d1826014
commit a5b44d25b0
8 changed files with 396 additions and 55 deletions
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13
electrum/lnutil.py
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@@ -344,8 +344,11 @@ def sign_and_get_sig_string(tx, local_config, remote_config):
sig_64 = sig_string_from_der_sig(sig[:-1])
return sig_64
def funding_output_script(local_config, remote_config):
pubkeys = sorted([bh2u(local_config.multisig_key.pubkey), bh2u(remote_config.multisig_key.pubkey)])
def funding_output_script(local_config, remote_config) -> str:
return funding_output_script_from_keys(local_config.multisig_key.pubkey, remote_config.multisig_key.pubkey)
def funding_output_script_from_keys(pubkey1: bytes, pubkey2: bytes) -> str:
pubkeys = sorted([bh2u(pubkey1), bh2u(pubkey2)])
return transaction.multisig_script(pubkeys, 2)
def calc_short_channel_id(block_height: int, tx_pos_in_block: int, output_index: int) -> bytes:
@@ -354,6 +357,12 @@ def calc_short_channel_id(block_height: int, tx_pos_in_block: int, output_index:
oi = output_index.to_bytes(2, byteorder='big')
return bh + tpos + oi
def invert_short_channel_id(short_channel_id: bytes) -> (int, int, int):
bh = int.from_bytes(short_channel_id[:3], byteorder='big')
tpos = int.from_bytes(short_channel_id[3:6], byteorder='big')
oi = int.from_bytes(short_channel_id[6:8], byteorder='big')
return bh, tpos, oi
def get_obscured_ctn(ctn, local, remote):
mask = int.from_bytes(sha256(local + remote)[-6:], 'big')
return ctn ^ mask