electrum

commit 8816d7072f2c89d9ceb35522415e42ff4cbf78fb
parent 4d71707be828687b1b270f84c42dc3eb739f39d3
Author: ThomasV <thomasv@gitorious>
Date:   Thu, 28 Aug 2014 17:40:36 +0200

add 8 bits to entropy target, to offset the constraint imposed by is_new_seed

Diffstat:
M
lib/mnemonic.py
 | 
3
++-

1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/mnemonic.py b/lib/mnemonic.py
@@ -83,7 +83,7 @@ class Mnemonic(object):
     def make_seed(self, num_bits=128, custom_entropy=1):
         n = int(math.ceil(math.log(custom_entropy,2)))
         # we add at least 16 bits
-        n_added = max(16, num_bits-n)
+        n_added = max(16, 8 + num_bits - n)
         print_error("make_seed: adding %d bits"%n_added)
         my_entropy = ecdsa.util.randrange( pow(2, n_added) )
         nonce = 0
@@ -97,5 +97,6 @@ class Mnemonic(object):
             # this removes 8 bits of entropy
             if is_new_seed(seed):
                 break
+        print_error('%d words'%len(seed.split()))
         return seed