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more bip32 related fixes

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ecdsa 2013-03-13 18:51:05 +01:00
parent 2f31ca779d
commit b955c9ffa1
1 changed files with 5 additions and 6 deletions
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11
lib/bitcoin.py
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@ -364,10 +364,9 @@ random_seed = lambda n: "%032x"%ecdsa.util.randrange( pow(2,n) )
def bip32_init(seed): def bip32_init(seed):
import hmac import hmac
seed = seed.decode('hex')
I = hmac.new("Bitcoin seed", seed, hashlib.sha512).digest() I = hmac.new("Bitcoin seed", seed, hashlib.sha512).digest()
print "seed", seed.encode('hex')
master_secret = I[0:32] master_secret = I[0:32]
master_chain = I[32:] master_chain = I[32:]
@ -520,14 +519,14 @@ class BIP32Sequence:
master_secret, master_chain, master_public_key, master_public_key_compressed = bip32_init(seed) master_secret, master_chain, master_public_key, master_public_key_compressed = bip32_init(seed)
return master_public_key.encode('hex'), master_chain.encode('hex') return master_public_key.encode('hex'), master_chain.encode('hex')
def get_pubkey(self, sequence, mpk): def get_pubkey(self, sequence, mpk = None):
if not mpk: mpk = self.mpk if not mpk: mpk = self.mpk
master_public_key, master_chain = self.mpk master_public_key, master_chain = self.mpk
K = master_public_key.decode('hex') K = master_public_key.decode('hex')
chain = master_chain.decode('hex') chain = master_chain.decode('hex')
for i in sequence: for i in sequence:
K, K_compressed, chain = CKD_prime(K, chain, i) K, K_compressed, chain = CKD_prime(K, chain, i)
return K_compressed return K_compressed.encode('hex')
def get_address(self, sequence): def get_address(self, sequence):
if not self.mpk2: if not self.mpk2:
@ -557,7 +556,7 @@ class BIP32Sequence:
def check_seed(self, seed): def check_seed(self, seed):
master_secret, master_chain, master_public_key, master_public_key_compressed = bip32_init(seed) master_secret, master_chain, master_public_key, master_public_key_compressed = bip32_init(seed)
assert self.mpk == master_public_key, master_chain assert self.mpk == (master_public_key.encode('hex'), master_chain.encode('hex'))
def get_input_info(self, sequence): def get_input_info(self, sequence):
if not self.mpk2: if not self.mpk2:
@ -870,7 +869,7 @@ class Transaction:
def test_bip32(): def test_bip32():
seed = "ff000000000000000000000000000000".decode('hex') seed = "ff000000000000000000000000000000"
master_secret, master_chain, master_public_key, master_public_key_compressed = bip32_init(seed) master_secret, master_chain, master_public_key, master_public_key_compressed = bip32_init(seed)
print "secret key", master_secret.encode('hex') print "secret key", master_secret.encode('hex')