RanchiMall/pyflo
3
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

implemented BIP32/BIP44: create extended public key from parent private/public key

Browse Source
This commit is contained in:
Alexey Karyabkin 2018-06-08 15:46:34 +04:00
parent 2488d22242
commit 1affa4a258
1 changed files with 17 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
pybtc/hdwallet.py
View File

@ -1,7 +1,7 @@
import os import os
import hmac import hmac
from struct import pack from struct import pack, unpack
from hashlib import pbkdf2_hmac from hashlib import pbkdf2_hmac
from binascii import hexlify, unhexlify from binascii import hexlify, unhexlify
from .constants import * from .constants import *
@ -133,6 +133,20 @@ def create_child_key_hdwallet(key, child_idx):
return None return None
# Создание расширенного приватного/публичного ключа
def create_expanded_key(key, child_idx):
if isinstance(key, dict):
if not key.get('is_private') and child_idx < FIRST_HARDENED_CHILD:
seed = key['key'] + pack('I', child_idx)
return hmac_sha512(key['chain_code'], seed)
elif key.get('is_private') and child_idx < FIRST_HARDENED_CHILD:
public_key = priv2pub(key['key'])
seed = public_key + pack('I', child_idx)
return hmac_sha512(key['chain_code'], seed)
return None
def add_private_keys(ext_value, key): def add_private_keys(ext_value, key):
ext_value_int = int.from_bytes(ext_value, byteorder="big") ext_value_int = int.from_bytes(ext_value, byteorder="big")
key_int = int.from_bytes(key, byteorder="big") key_int = int.from_bytes(key, byteorder="big")
@ -163,9 +177,9 @@ def serialize_key_hdwallet(key):
key_bytes = bytes(1) + key_bytes key_bytes = bytes(1) + key_bytes
result = key['version'] result = key['version']
result += pack('>B', key['depth']) result += pack('B', key['depth'])
result += key['finger_print'] result += key['finger_print']
result += pack('>I', key['child']) result += pack('I', key['child'])
result += key['chain_code'] result += key['chain_code']
result += key_bytes result += key_bytes
chk_sum = double_sha256(result)[:4] chk_sum = double_sha256(result)[:4]