BTCPrivate
/
electrum-bitcoinprivate
mirror of https://github.com/BTCPrivate/electrum-bitcoinprivate.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

encryption of bip32 master private keys

This commit is contained in:
ThomasV 2013-08-05 13:53:50 +02:00
parent 77df84e509
commit d9a926b0ff
2 changed files with 62 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
lib/account.py
View File

@ -1,18 +1,21 @@
"""
todolist:
* passwords, private keys storage
* multisig service
* compatibility with old addresses for restore
* gui
an account may use one or several MPKs.
due to the type 1 derivations, we need to pass the mpk to this function
None : all accounts
-1 : imported
0,1... : seeded sequences
#!/usr/bin/env python
#
# Electrum - lightweight Bitcoin client
# Copyright (C) 2013 thomasv@gitorious
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
each account has a public and private master key
"""
from bitcoin import *

73
lib/wallet.py
View File

@ -195,7 +195,7 @@ class Wallet:
self.create_new_account('Main account')
def create_new_account(self, name):
def create_new_account(self, name, password):
keys = self.accounts.keys()
i = 0
@ -205,9 +205,9 @@ class Wallet:
i += 1
start = "m/0'/"
master_k = self.get_master_private_key(start, password )
master_c, master_K, master_cK = self.master_public_keys[start]
master_k = self.master_private_keys[start] # needs decryption
k, c, K, cK = bip32_private_derivation(master_k, master_c, start, derivation) # this is a type 1 derivation
k, c, K, cK = bip32_private_derivation(master_k, master_c, start, derivation)
self.accounts[derivation] = BIP32_Account({ 'name':name, 'c':c, 'K':K, 'cK':cK })
self.save_accounts()
@ -269,6 +269,17 @@ class Wallet:
raise
return self.config.get("master_public_key")
def get_master_private_key(self, account, password):
master_k = pw_decode( self.master_private_keys[account], password)
master_c, master_K, master_Kc = self.master_public_keys[account]
try:
K, Kc = get_pubkeys_from_secret(master_k.decode('hex'))
assert K.encode('hex') == master_K
except:
raise BaseException("Invalid password")
return master_k
def get_address_index(self, address):
if address in self.imported_keys.keys():
return -1, None
@ -291,8 +302,29 @@ class Wallet:
#todo: #self.sequences[0].check_seed(seed)
return seed
def get_private_key(self, address, password):
return self.get_private_keys([address], password).get(address)
if address in self.imported_keys.keys():
return pw_decode( self.imported_keys[address], password )
else:
account, sequence = self.get_address_index(address)
m = re.match("m/0'/(\d+)'", account)
if m:
num = int(m.group(1))
master_k = self.get_master_private_key("m/0'/", password)
master_c, _, _ = self.master_public_keys["m/0'/"]
master_k, master_c = CKD(master_k, master_c, num + BIP32_PRIME)
return self.accounts[account].get_private_key(sequence, master_k)
m2 = re.match("m/1'/(\d+) & m/2'/(\d+)", account)
if m2:
num = int(m2.group(1))
master_k = self.get_master_private_key("m/1'/", password)
master_c, master_K, _ = self.master_public_keys["m/1'/"]
master_k, master_c = CKD(master_k.decode('hex'), master_c.decode('hex'), num)
return self.accounts[account].get_private_key(sequence, master_k)
return
def get_private_keys(self, addresses, password):
if not self.seed: return {}
@ -300,29 +332,8 @@ class Wallet:
seed = self.decode_seed(password)
out = {}
for address in addresses:
if address in self.imported_keys.keys():
out[address] = pw_decode( self.imported_keys[address], password )
else:
account, sequence = self.get_address_index(address)
print_error( "found index", address, account, sequence)
m = re.match("m/0'/(\d+)'", account)
if m:
num = int(m.group(1))
master_k = self.master_private_keys["m/0'/"]
master_c, _, _ = self.master_public_keys["m/0'/"]
master_k, master_c = CKD(master_k, master_c, num + BIP32_PRIME)
pk = self.accounts[account].get_private_key(sequence, master_k)
out[address] = pk
m2 = re.match("m/1'/(\d+) & m/2'/(\d+)", account)
if m2:
num = int(m2.group(1))
master_k = self.master_private_keys["m/1'/"]
master_c, master_K, _ = self.master_public_keys["m/1'/"]
master_k, master_c = CKD(master_k.decode('hex'), master_c.decode('hex'), num)
pk = self.accounts[account].get_private_key(sequence, master_k)
out[address] = pk
pk = self.get_private_key(address, password)
if pk: out[address] = pk
return out
@ -724,7 +735,7 @@ class Wallet:
if not self.use_change or account == -1:
change_addr = inputs[-1]['address']
else:
change_addr = self.accounts[account][1][-self.gap_limit_for_change]
change_addr = self.accounts[account].get_addresses(1)[-self.gap_limit_for_change]
# Insert the change output at a random position in the outputs
posn = random.randint(0, len(outputs))
@ -949,6 +960,12 @@ class Wallet:
self.imported_keys[k] = c
self.config.set_key('imported_keys', self.imported_keys, True)
for k, v in self.master_private_keys.items():
b = pw_decode(v, old_password)
c = pw_encode(b, new_password)
self.master_private_keys[k] = c
self.config.set_key('master_private_keys', self.master_private_keys, True)
def freeze(self,addr):
if self.is_mine(addr) and addr not in self.frozen_addresses: