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Merge pull request #3611 from SomberNight/mnemonic_enforce_num_words

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avoid shorter seeds 'by luck'
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ThomasV 2018-01-06 12:51:30 +01:00 • committed by GitHub
commit 1fe18ab1ce
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1 changed files with 4 additions and 1 deletions
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5
lib/mnemonic.py
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@ -171,7 +171,10 @@ class Mnemonic(object):
n_custom = int(math.ceil(math.log(custom_entropy, 2))) n_custom = int(math.ceil(math.log(custom_entropy, 2)))
n = max(16, num_bits - n_custom) n = max(16, num_bits - n_custom)
print_error("make_seed", prefix, "adding %d bits"%n) print_error("make_seed", prefix, "adding %d bits"%n)
my_entropy = ecdsa.util.randrange(pow(2, n)) my_entropy = 1
while my_entropy < pow(2, n - bpw):
# try again if seed would not contain enough words
my_entropy = ecdsa.util.randrange(pow(2, n))
nonce = 0 nonce = 0
while True: while True:
nonce += 1 nonce += 1