AaronFiore/electrum
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check dust limits

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* on channel opening we verify that the peer's dust limit is above 354
  sat, the limit for unknown segwit versions
* we constrain the allowed scriptpubkey types for channel closing
* we check that the remote's output is above the relay dust limit for
  the collaborative close case
This commit is contained in:
bitromortac
2021-10-22 12:58:04 +02:00
parent f2f8c4533b
commit 947693c90d
4 changed files with 40 additions and 16 deletions
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8
electrum/bitcoin.py
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@@ -349,8 +349,12 @@ def relayfee(network: 'Network' = None) -> int:
# see https://github.com/bitcoin/bitcoin/blob/a62f0ed64f8bbbdfe6467ac5ce92ef5b5222d1bd/src/policy/policy.cpp#L14
DUST_LIMIT_DEFAULT_SAT_LEGACY = 546
DUST_LIMIT_DEFAULT_SAT_SEGWIT = 294
# and https://github.com/lightningnetwork/lightning-rfc/blob/7e3dce42cbe4fa4592320db6a4e06c26bb99122b/03-transactions.md#dust-limits
DUST_LIMIT_P2PKH = 546
DUST_LIMIT_P2SH = 540
DUST_LIMIT_UNKNOWN_SEGWIT = 354
DUST_LIMIT_P2WSH = 330
DUST_LIMIT_P2WPKH = 294
def dust_threshold(network: 'Network' = None) -> int: