BIP32_HD_Wallet: Fix address derivation
Unfortunately there was root_name and root_derivation confusion in the past for classes derived from BIP_32_HD_Wallet. Address derivation used root_name and so would begin with 'x/' whereas it should have begun with root_derivation, and so started with 'm/'. This fixes that old wart and removes some fudges from the trezor code that used to work around it.
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@ -1668,19 +1668,15 @@ class BIP32_HD_Wallet(BIP32_Wallet):
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# drop unused master public key to avoid duplicate errors
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acc2 = storage.get('next_account2', None)
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if acc2:
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storage.put('next_account2', None)
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self.master_public_keys.pop(self.root_name + acc2[0] + "'", None)
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self.storage.put('master_public_keys', self.master_public_keys)
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storage.put('next_account2', None)
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storage.put('master_public_keys', self.master_public_keys)
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def next_account_number(self):
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assert (set(self.accounts.keys()) ==
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set(['%d' % n for n in range(len(self.accounts))]))
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return len(self.accounts)
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def next_derivation(self):
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account_id = '%d' % self.next_account_number()
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return self.root_name + account_id + "'", account_id
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def show_account(self, account_id):
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return self.account_is_used(account_id) or account_id in self.labels
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@ -1711,8 +1707,10 @@ class BIP32_HD_Wallet(BIP32_Wallet):
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self.create_next_account(password)
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def create_next_account(self, password, label=None):
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derivation, account_id = self.next_derivation()
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xpub, xprv = self.derive_xkeys(self.root_name, derivation, password)
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account_id = '%d' % self.next_account_number()
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derivation = self.account_derivation(account_id)
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root_name = self.root_derivation.split('/')[0] # NOT self.root_name!
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xpub, xprv = self.derive_xkeys(root_name, derivation, password)
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self.add_master_public_key(derivation, xpub)
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if xprv:
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self.add_master_private_key(derivation, xprv, password)
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@ -1728,13 +1726,9 @@ class BIP32_HD_Wallet(BIP32_Wallet):
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def accounts_all_used(self):
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return all(self.account_is_used(acc_id) for acc_id in self.accounts)
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@classmethod
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def prefix(self):
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return "/".join(self.root_derivation.split("/")[1:])
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@classmethod
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def account_derivation(self, account_id):
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return self.prefix() + "/" + account_id + "'"
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return self.root_derivation + "/" + account_id + "'"
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@classmethod
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def address_derivation(self, account_id, change, address_index):
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@ -63,6 +63,10 @@ class BTChipWallet(BIP44_Wallet):
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assert not self.has_seed()
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return self.force_watching_only
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def address_id(self, address):
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# Strip the leading "m/"
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return BIP44_Wallet.address_id(self, address)[2:]
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def get_client(self, noPin=False):
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if not BTCHIP:
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self.give_error('please install github.com/btchip/btchip-python')
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@ -98,7 +98,7 @@ def trezor_client_class(protocol_mixin, base_client, proto):
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'''Convert bip32 path to list of uint32 integers with prime flags
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0/-1/1' -> [0, 0x80000001, 0x80000001]'''
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path = []
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for x in n.split('/'):
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for x in n.split('/')[1:]:
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prime = 0
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if x.endswith("'"):
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x = x.replace('\'', '')
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@ -100,7 +100,6 @@ class TrezorCompatibleWallet(BIP44_Wallet):
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# When creating a wallet we need to ask the device for the
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# master public key
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derivation = derivation.replace(self.root_name, self.prefix() + "/")
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xpub = self.get_public_key(derivation)
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return xpub, None
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