AaronFiore/electrum
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allow shorter than 24 word old 2fa seeds

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related: #3611
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SomberNight
2018-05-02 14:52:32 +02:00
parent 864706574b
commit 00b2af41c9
1 changed files with 4 additions and 1 deletions
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5
plugins/trustedcoin/trustedcoin.py
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@@ -418,7 +418,10 @@ class TrustedCoinPlugin(BasePlugin):
words = seed.split()
n = len(words)
# old version use long seed phrases
if n >= 24:
if n >= 20:
# note: pre-2.7 2fa seeds were typically 24-25 words, however they
# could probabilistically be arbitrarily shorter due to a bug. (see #3611)
# the probability of it being < 20 words is about 2^(-(256+12-19*11)) = 2^(-59)
assert passphrase == ''
xprv1, xpub1 = self.get_xkeys(' '.join(words[0:12]), '', "m/")
xprv2, xpub2 = self.get_xkeys(' '.join(words[12:]), '', "m/")