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restore old accounts from seed

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This commit is contained in:
ThomasV
2013-08-31 15:02:20 +02:00
parent f48c6130df
commit b983d12929
5 changed files with 56 additions and 59 deletions
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71
lib/account.py
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@@ -48,10 +48,13 @@ class Account(object):
class OldAccount(Account):
""" Privatekey(type,n) = Master_private_key + H(n|S|type) """
def __init__(self, mpk, mpk2 = None, mpk3 = None):
self.mpk = mpk
self.mpk2 = mpk2
self.mpk3 = mpk3
def __init__(self, v):
self.addresses = v.get(0, [])
self.change = v.get(1, [])
self.mpk = v['mpk'].decode('hex')
def dump(self):
return {0:self.addresses, 1:self.change}
@classmethod
def mpk_from_seed(klass, seed):
@@ -68,48 +71,33 @@ class OldAccount(Account):
seed = hashlib.sha256(seed + oldseed).digest()
return string_to_number( seed )
def get_sequence(self, sequence, mpk):
for_change, n = sequence
return string_to_number( Hash( "%d:%d:"%(n,for_change) + mpk.decode('hex') ) )
def get_sequence(self, for_change, n):
return string_to_number( Hash( "%d:%d:"%(n,for_change) + self.mpk ) )
def get_address(self, sequence):
if not self.mpk2:
pubkey = self.get_pubkey(sequence)
address = public_key_to_bc_address( pubkey.decode('hex') )
elif not self.mpk3:
pubkey1 = self.get_pubkey(sequence)
pubkey2 = self.get_pubkey(sequence, mpk = self.mpk2)
address = Transaction.multisig_script([pubkey1, pubkey2], 2)["address"]
else:
pubkey1 = self.get_pubkey(sequence)
pubkey2 = self.get_pubkey(sequence, mpk = self.mpk2)
pubkey3 = self.get_pubkey(sequence, mpk = self.mpk3)
address = Transaction.multisig_script([pubkey1, pubkey2, pubkey3], 2)["address"]
def get_address(self, for_change, n):
pubkey = self.get_pubkey(for_change, n)
address = public_key_to_bc_address( pubkey.decode('hex') )
return address
def get_pubkey(self, sequence, mpk=None):
def get_pubkey(self, for_change, n):
curve = SECP256k1
if mpk is None: mpk = self.mpk
z = self.get_sequence(sequence, mpk)
master_public_key = ecdsa.VerifyingKey.from_string( mpk.decode('hex'), curve = SECP256k1 )
mpk = self.mpk
z = self.get_sequence(for_change, n)
master_public_key = ecdsa.VerifyingKey.from_string( mpk, curve = SECP256k1 )
pubkey_point = master_public_key.pubkey.point + z*curve.generator
public_key2 = ecdsa.VerifyingKey.from_public_point( pubkey_point, curve = SECP256k1 )
return '04' + public_key2.to_string().encode('hex')
def get_private_key_from_stretched_exponent(self, sequence, secexp):
def get_private_key_from_stretched_exponent(self, for_change, n, secexp):
order = generator_secp256k1.order()
secexp = ( secexp + self.get_sequence(sequence, self.mpk) ) % order
secexp = ( secexp + self.get_sequence(for_change, n) ) % order
pk = number_to_string( secexp, generator_secp256k1.order() )
compressed = False
return SecretToASecret( pk, compressed )
def get_private_key(self, sequence, seed):
def get_private_key(self, for_change, n, seed):
secexp = self.stretch_key(seed)
return self.get_private_key_from_stretched_exponent(sequence, secexp)
def get_private_keys(self, sequence_list, seed):
secexp = self.stretch_key(seed)
return [ self.get_private_key_from_stretched_exponent( sequence, secexp) for sequence in sequence_list]
return self.get_private_key_from_stretched_exponent(for_change, n, secexp)
def check_seed(self, seed):
curve = SECP256k1
@@ -121,23 +109,8 @@ class OldAccount(Account):
raise BaseException('Invalid password')
return True
def get_input_info(self, sequence):
if not self.mpk2:
pk_addr = self.get_address(sequence)
redeemScript = None
elif not self.mpk3:
pubkey1 = self.get_pubkey(sequence)
pubkey2 = self.get_pubkey(sequence,mpk=self.mpk2)
pk_addr = public_key_to_bc_address( pubkey1.decode('hex') ) # we need to return that address to get the right private key
redeemScript = Transaction.multisig_script([pubkey1, pubkey2], 2)['redeemScript']
else:
pubkey1 = self.get_pubkey(sequence)
pubkey2 = self.get_pubkey(sequence, mpk=self.mpk2)
pubkey3 = self.get_pubkey(sequence, mpk=self.mpk3)
pk_addr = public_key_to_bc_address( pubkey1.decode('hex') ) # we need to return that address to get the right private key
redeemScript = Transaction.multisig_script([pubkey1, pubkey2, pubkey3], 2)['redeemScript']
return pk_addr, redeemScript
def redeem_script(self, sequence):
return None
class BIP32_Account(Account):