drop support for multiple accounts (bip44) in standard wallets

lib/bitcoin.py

@@ -749,9 +749,11 @@ def bip32_root(seed, testnet=False):
 
 
 def bip32_private_derivation(xprv, branch, sequence, testnet=False):
+    assert sequence.startswith(branch)
+    if branch == sequence:
+        return xprv, xpub_from_xprv(xprv, testnet)
     header_pub, header_priv = _get_headers(testnet)
     depth, fingerprint, child_number, c, k = deserialize_xkey(xprv)
-    assert sequence.startswith(branch)
     sequence = sequence[len(branch):]
     for n in sequence.split('/'):
         if n == '': continue

lib/mnemonic.py

@@ -121,7 +121,7 @@ class Mnemonic(object):
     def mnemonic_to_seed(self, mnemonic, passphrase):
         PBKDF2_ROUNDS = 2048
         mnemonic = prepare_seed(mnemonic)
-        return pbkdf2.PBKDF2(mnemonic, 'mnemonic' + passphrase, iterations = PBKDF2_ROUNDS, macmodule = hmac, digestmodule = hashlib.sha512).read(64)
+        return pbkdf2.PBKDF2(mnemonic, 'electrum' + passphrase, iterations = PBKDF2_ROUNDS, macmodule = hmac, digestmodule = hashlib.sha512).read(64)
 
     def mnemonic_encode(self, i):
         n = len(self.wordlist)

lib/version.py

@@ -1,6 +1,6 @@
 ELECTRUM_VERSION = "2.0"    # version of the client package
 PROTOCOL_VERSION = '0.9'    # protocol version requested
-NEW_SEED_VERSION = 10       # electrum versions >= 2.0
+NEW_SEED_VERSION = 11       # electrum versions >= 2.0
 OLD_SEED_VERSION = 4        # electrum versions < 2.0
 
 

lib/wallet.py

@@ -1468,18 +1468,22 @@ class BIP32_HD_Wallet(BIP32_Wallet):
 
 
 
-class NewWallet(BIP32_HD_Wallet, Mnemonic):
+class NewWallet(BIP32_Wallet, Mnemonic):
-    # bip 44
+    # Standard wallet
     root_name = 'x/'
-    root_derivation = "m/44'/0'"
+    root_derivation = "m/"
     wallet_type = 'standard'
 
+    def create_main_account(self, password):
+        xpub = self.master_public_keys.get("x/")
+        account = BIP32_Account({'xpub':xpub})
+        self.add_account('0', account)
+
 
 class Wallet_2of2(BIP32_Wallet, Mnemonic):
     # Wallet with multisig addresses.
-    # Cannot create accounts
     root_name = "x1/"
-    root_derivation = "m/44'/0'"
+    root_derivation = "m/"
     wallet_type = '2of2'
 
     def can_import(self):
@@ -1633,7 +1637,7 @@ class Wallet(object):
 
         if seed_version not in [OLD_SEED_VERSION, NEW_SEED_VERSION]:
             msg = "This wallet seed is not supported anymore."
-            if seed_version in [5, 7, 8, 9]:
+            if seed_version in [5, 7, 8, 9, 10]:
                 msg += "\nTo open this wallet, try 'git checkout seed_v%d'"%seed_version
             raise BaseException(msg)
 

plugins/trezor.py

@@ -12,7 +12,7 @@ from electrum.bitcoin import EncodeBase58Check, public_key_to_bc_address, bc_add
 from electrum.i18n import _
 from electrum.plugins import BasePlugin, hook
 from electrum.transaction import deserialize
-from electrum.wallet import NewWallet
+from electrum.wallet import BIP32_HD_Wallet
 from electrum.util import print_error
 
 from electrum_gui.qt.password_dialog import make_password_dialog, run_password_dialog
@@ -161,11 +161,12 @@ class Plugin(BasePlugin):
             return False
 
 
-class TrezorWallet(NewWallet):
+class TrezorWallet(BIP32_HD_Wallet):
     wallet_type = 'trezor'
+    root_derivation = "m/44'/0'"
 
     def __init__(self, storage):
-        NewWallet.__init__(self, storage)
+        BIP32_HD_Wallet.__init__(self, storage)
         self.transport = None
         self.client = None
         self.mpk = None