Merge pull request #30 from cheeseandcereal/remove_pywallet

Remove pywallet and replace with pycoin for bip32

binance_chain/wallet.py

@@ -4,7 +4,7 @@
 
 from secp256k1 import PrivateKey
 from mnemonic import Mnemonic
-from pywallet.utils.bip32 import Wallet as Bip32Wallet
+from pycoin.symbols.btc import network
 
 from binance_chain.utils.segwit_addr import address_from_public_key, decode_address
 from binance_chain.environment import BinanceEnvironment
@@ -131,9 +131,11 @@ def create_wallet_from_mnemonic(cls, mnemonic: str, env: Optional[BinanceEnviron
         :return:
         """
         seed = Mnemonic.to_seed(mnemonic)
-        new_wallet = Bip32Wallet.from_master_secret(seed=seed, network='BTC')
-        child = new_wallet.get_child_for_path(Wallet.HD_PATH)
-        return cls(child.get_private_key_hex().decode(), env=env)
+        parent_wallet = network.keys.bip32_seed(seed)
+        child_wallet = parent_wallet.subkey_for_path(Wallet.HD_PATH)
+        # convert secret exponent (private key) int to hex
+        key_hex = format(child_wallet.secret_exponent(), 'x')
+        return cls(key_hex, env=env)
 
     @property
     def private_key(self):

requirements.txt

@@ -1,7 +1,7 @@
-pywallet>=0.1.0
+pycoin>=0.90.20201031
 requests>=2.21.0
 aiohttp>=3.5.4
 websockets>=7.0
 secp256k1>=0.13.2
 mnemonic>=0.18
-protobuf>=3.6.1
+protobuf>=3.6.1

setup.py

@@ -24,7 +24,7 @@ def find_version(*file_paths):
 def install_requires():
 
     requires = [
-        'pywallet>=0.1.0', 'requests>=2.21.0', 'websockets>=7.0', 'aiohttp>=3.5.4',
+        'pycoin>=0.90.20201031', 'requests>=2.21.0', 'websockets>=7.0', 'aiohttp>=3.5.4',
         'secp256k1>=0.13.2', 'protobuf>=3.6.1', 'mnemonic>=0.18', 'ujson>=1.35'
     ]
     return requires