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bip39

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ThomasV
2014-02-01 11:23:29 +01:00
parent 98ae202d80
commit c90bc6aa26
2 changed files with 18 additions and 12 deletions
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9
lib/bitcoin.py
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@@ -62,9 +62,14 @@ def Hash(x):
hash_encode = lambda x: x[::-1].encode('hex')
hash_decode = lambda x: x.decode('hex')[::-1]
hmac_sha_512 = lambda x,y: hmac.new(x, y, hashlib.sha512).digest()
mnemonic_hash = lambda x: hmac_sha_512("Bitcoin mnemonic", x).encode('hex')
def mnemonic_to_seed(mnemonic, passphrase):
from pbkdf2 import PBKDF2
import hmac
PBKDF2_ROUNDS = 2048
return PBKDF2(mnemonic, 'mnemonic' + passphrase, iterations = PBKDF2_ROUNDS, macmodule = hmac, digestmodule = hashlib.sha512).read(64)
from version import SEED_PREFIX
is_seed = lambda x: hmac_sha_512("Seed version", x).encode('hex')[0:2].startswith(SEED_PREFIX)