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avoid duplicating bech32 module

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This commit is contained in:
Janus
2018-04-17 15:31:00 +02:00
committed by ThomasV
parent f278833c40
commit 5b1a5e8786
3 changed files with 5 additions and 128 deletions
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4
electrum/segwit_addr.py
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@@ -59,14 +59,14 @@ def bech32_encode(hrp, data):
return hrp + '1' + ''.join([CHARSET[d] for d in combined])
def bech32_decode(bech):
def bech32_decode(bech, ignore_long_length=False):
"""Validate a Bech32 string, and determine HRP and data."""
if ((any(ord(x) < 33 or ord(x) > 126 for x in bech)) or
(bech.lower() != bech and bech.upper() != bech)):
return (None, None)
bech = bech.lower()
pos = bech.rfind('1')
if pos < 1 or pos + 7 > len(bech) or len(bech) > 90:
if pos < 1 or pos + 7 > len(bech) or (not ignore_long_length and len(bech) > 90):
return (None, None)
if not all(x in CHARSET for x in bech[pos+1:]):
return (None, None)