mirror of
https://github.com/alexgo-io/stacks-puppet-node.git
synced 2026-04-09 08:41:15 +08:00
694 lines
21 KiB
Python
694 lines
21 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Blockstack-client
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~~~~~
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copyright: (c) 2014-2015 by Halfmoon Labs, Inc.
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copyright: (c) 2016 by Blockstack.org
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This file is part of Blockstack-client.
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Blockstack-client is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Blockstack-client is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Blockstack-client. If not, see <http://www.gnu.org/licenses/>.
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"""
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import virtualchain
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from binascii import hexlify
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import collections
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import json
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import traceback
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import keylib
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from keylib import ECPrivateKey, ECPublicKey
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from keylib.hashing import bin_hash160
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from keylib.address_formatting import bin_hash160_to_address
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from keylib.key_formatting import compress, decompress
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from keylib.public_key_encoding import PubkeyType
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from .backend.crypto.utils import get_address_from_privkey
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from .backend.crypto.utils import aes_encrypt, aes_decrypt
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from keychain import PrivateKeychain
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import fastecdsa
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import fastecdsa.curve
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import fastecdsa.keys
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import fastecdsa.ecdsa
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import pybitcoin
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import bitcoin
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import binascii
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import jsonschema
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from jsonschema.exceptions import ValidationError
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from utilitybelt import is_hex
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from .config import get_logger
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from .constants import CONFIG_PATH, BLOCKSTACK_DEBUG, BLOCKSTACK_TEST
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log = get_logger()
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# deriving hardened keys is expensive, so cache them once derived.
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# maps hex_privkey --> {key_index: child_key}
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KEY_CACHE = {}
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KEYCHAIN_CACHE = {}
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# LRU cache of hashes we've verified
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VERIFIER_CACHE = None
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class HDWallet(object):
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"""
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Initialize a hierarchical deterministic wallet with
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hex_privkey and get child addresses and private keys
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"""
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def __init__(self, hex_privkey=None):
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"""
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If @hex_privkey is given, use that to derive keychain
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otherwise, use a new random seed
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"""
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global KEYCHAIN_CACHE
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assert hex_privkey
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self.hex_privkey = hex_privkey
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self.priv_keychain = None
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self.master_address = None
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self.child_addresses = None
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if KEYCHAIN_CACHE.has_key(str(self.hex_privkey)):
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if BLOCKSTACK_TEST:
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log.debug("{} keychain is cached".format(self.hex_privkey))
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self.priv_keychain = KEYCHAIN_CACHE[str(self.hex_privkey)]
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else:
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if BLOCKSTACK_TEST:
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log.debug("{} keychain is NOT cached".format(self.hex_privkey))
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self.priv_keychain = self.get_priv_keychain(self.hex_privkey)
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KEYCHAIN_CACHE[str(self.hex_privkey)] = self.priv_keychain
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self.master_address = self.get_master_address()
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def get_priv_keychain(self, hex_privkey):
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if hex_privkey:
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return PrivateKeychain.from_private_key(hex_privkey)
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log.debug('No privatekey given, starting new wallet')
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return PrivateKeychain()
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def get_master_privkey(self):
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return self.priv_keychain.private_key()
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def get_child_privkey(self, index=0):
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"""
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@index is the child index
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Returns:
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child privkey for given @index
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"""
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global KEY_CACHE
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if KEY_CACHE.has_key(self.hex_privkey) and KEY_CACHE[self.hex_privkey].has_key(index):
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if BLOCKSTACK_TEST:
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log.debug("Child {} of {} is cached".format(index, self.hex_privkey))
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return KEY_CACHE[self.hex_privkey][index]
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# expensive...
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child = self.priv_keychain.hardened_child(index)
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if not KEY_CACHE.has_key(self.hex_privkey):
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KEY_CACHE[self.hex_privkey] = {}
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KEY_CACHE[self.hex_privkey][index] = child.private_key()
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return child.private_key()
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@classmethod
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def get_privkey(cls, hex_privkey, index):
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"""
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Get a child private key (static method)
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"""
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global KEY_CACHE
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if KEY_CACHE.has_key(hex_privkey) and KEY_CACHE[hex_privkey].has_key(index):
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if BLOCKSTACK_TEST:
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log.debug("Child {} of {} is cached".format(index, hex_privkey))
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return KEY_CACHE[hex_privkey][index]
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hdwallet = HDWallet(hex_privkey)
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return hdwallet.get_child_privkey(index=index)
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def get_master_address(self):
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if self.master_address is not None:
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return self.master_address
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hex_privkey = self.get_master_privkey()
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return get_address_from_privkey(hex_privkey)
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def get_child_address(self, index=0):
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"""
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@index is the child index
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Returns:
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child address for given @index
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"""
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if self.child_addresses is not None:
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return self.child_addresses[index]
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hex_privkey = self.get_child_privkey(index)
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return get_address_from_privkey(hex_privkey)
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def get_child_keypairs(self, count=1, offset=0, include_privkey=False):
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"""
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Returns (privkey, address) keypairs
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Returns:
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returns child keypairs
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@include_privkey: toggles between option to return
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privkeys along with addresses or not
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"""
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keypairs = []
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for index in range(offset, offset + count):
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address = self.get_child_address(index)
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if include_privkey:
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hex_privkey = self.get_child_privkey(index)
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keypairs.append((address, hex_privkey))
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else:
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keypairs.append(address)
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return keypairs
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def get_privkey_from_address(self, target_address, count=1):
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"""
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Given a child address, return priv key of that address
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"""
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addresses = self.get_child_keypairs(count=count)
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for i, address in enumerate(addresses):
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if address == target_address:
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return self.get_child_privkey(i)
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return None
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def is_multisig(privkey_info):
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"""
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Does the given private key info represent
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a multisig bundle?
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"""
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from .schemas import PRIVKEY_MULTISIG_SCHEMA
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try:
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jsonschema.validate(privkey_info, PRIVKEY_MULTISIG_SCHEMA)
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return True
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except ValidationError as e:
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return False
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def is_encrypted_multisig(privkey_info):
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"""
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Does a given encrypted private key info
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represent an encrypted multisig bundle?
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"""
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from .schemas import ENCRYPTED_PRIVKEY_MULTISIG_SCHEMA
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try:
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jsonschema.validate(privkey_info, ENCRYPTED_PRIVKEY_MULTISIG_SCHEMA)
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return True
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except ValidationError as e:
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return False
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def is_singlesig(privkey_info):
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"""
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Does the given private key info represent
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a single signature bundle? (i.e. one private key)?
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"""
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from .schemas import PRIVKEY_SINGLESIG_SCHEMA
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try:
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jsonschema.validate(privkey_info, PRIVKEY_SINGLESIG_SCHEMA)
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return True
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except ValidationError as e:
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return False
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def is_encrypted_singlesig(privkey_info):
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"""
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Does the given string represent an encrypted
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single private key?
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"""
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from .schemas import ENCRYPTED_PRIVKEY_SINGLESIG_SCHEMA
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try:
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jsonschema.validate(privkey_info, ENCRYPTED_PRIVKEY_SINGLESIG_SCHEMA)
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return True
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except ValidationError as e:
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return False
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def singlesig_privkey_to_string(privkey_info):
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"""
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Convert private key to string
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"""
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return ECPrivateKey(privkey_info).to_hex()
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#return virtualchain.BitcoinPrivateKey(privkey_info).to_hex()
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def multisig_privkey_to_string(privkey_info):
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"""
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Convert multisig keys to string
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"""
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return ','.join([singlesig_privkey_to_string(pk) for pk in privkey_info['private_keys']])
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def privkey_to_string(privkey_info):
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"""
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Convert private key to string
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Return None on invalid
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"""
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if is_singlesig(privkey_info):
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return singlesig_privkey_to_string(privkey_info)
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if is_multisig(privkey_info):
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return multisig_privkey_to_string(privkey_info)
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return None
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def encrypt_multisig_info(multisig_info, password):
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"""
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Given a multisig info dict,
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encrypt the sensitive fields.
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Returns {'encrypted_private_keys': ..., 'encrypted_redeem_script': ..., **other_fields}
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"""
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enc_info = {
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'encrypted_private_keys': None,
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'encrypted_redeem_script': None
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}
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hex_password = hexlify(password)
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assert is_multisig(multisig_info), 'Invalid multisig keys'
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enc_info['encrypted_private_keys'] = []
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for pk in multisig_info['private_keys']:
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pk_ciphertext = aes_encrypt(pk, hex_password)
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enc_info['encrypted_private_keys'].append(pk_ciphertext)
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enc_info['encrypted_redeem_script'] = aes_encrypt(
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multisig_info['redeem_script'], hex_password
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)
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# preserve any other fields
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for k, v in multisig_info.items():
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if k not in ['private_keys', 'redeem_script']:
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enc_info[k] = v
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return enc_info
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def decrypt_multisig_info(enc_multisig_info, password):
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"""
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Given an encrypted multisig info dict,
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decrypt the sensitive fields.
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Returns {'private_keys': ..., 'redeem_script': ..., **other_fields}
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Return {'error': ...} on error
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"""
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multisig_info = {
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'private_keys': None,
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'redeem_script': None,
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}
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hex_password = hexlify(password)
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assert is_encrypted_multisig(enc_multisig_info), 'Invalid encrypted multisig keys'
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multisig_info['private_keys'] = []
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for enc_pk in enc_multisig_info['encrypted_private_keys']:
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pk = None
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try:
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pk = aes_decrypt(enc_pk, hex_password)
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virtualchain.BitcoinPrivateKey(pk)
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except Exception as e:
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if BLOCKSTACK_TEST:
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log.exception(e)
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return {'error': 'Invalid password; failed to decrypt private key in multisig wallet'}
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multisig_info['private_keys'].append(ECPrivateKey(pk).to_hex())
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redeem_script = None
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enc_redeem_script = enc_multisig_info['encrypted_redeem_script']
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try:
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redeem_script = aes_decrypt(enc_redeem_script, hex_password)
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except Exception as e:
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if BLOCKSTACK_TEST:
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log.exception(e)
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return {'error': 'Invalid password; failed to decrypt redeem script in multisig wallet'}
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multisig_info['redeem_script'] = redeem_script
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# preserve any other information in the multisig info
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for k, v in enc_multisig_info.items():
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if k not in ['encrypted_private_keys', 'encrypted_redeem_script']:
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multisig_info[k] = v
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return multisig_info
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def encrypt_private_key_info(privkey_info, password):
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"""
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Encrypt private key info.
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Return {'status': True, 'encrypted_private_key_info': {'address': ..., 'private_key_info': ...}} on success
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Returns {'error': ...} on error
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"""
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hex_password = hexlify(password)
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ret = {}
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if is_multisig(privkey_info):
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ret['address'] = virtualchain.make_multisig_address(
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privkey_info['redeem_script']
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)
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ret['private_key_info'] = encrypt_multisig_info(
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privkey_info, password
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)
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return {'status': True, 'encrypted_private_key_info': ret}
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if is_singlesig(privkey_info):
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ret['address'] = virtualchain.BitcoinPrivateKey(
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privkey_info).public_key().address()
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ret['private_key_info'] = aes_encrypt(privkey_info, hex_password)
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return {'status': True, 'encrypted_private_key_info': ret}
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return {'error': 'Invalid private key info'}
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def decrypt_private_key_info(privkey_info, password):
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"""
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Decrypt a particular private key info bundle.
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It can be either a single-signature private key, or a multisig key bundle.
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Return {'address': ..., 'private_key_info': ...} on success.
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Return {'error': ...} on error.
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"""
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hex_password = hexlify(password)
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ret = {}
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if is_encrypted_multisig(privkey_info):
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ret = decrypt_multisig_info(privkey_info, password)
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if 'error' in ret:
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return {'error': 'Failed to decrypt multisig wallet: {}'.format(ret['error'])}
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# sanity check
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if 'redeem_script' not in ret:
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return {'error': 'Invalid multisig wallet: missing redeem_script'}
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if 'private_keys' not in ret:
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return {'error': 'Invalid multisig wallet: missing private_keys'}
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return {'address': virtualchain.make_p2sh_address(ret['redeem_script']), 'private_key_info': ret}
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if is_encrypted_singlesig(privkey_info):
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try:
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pk = aes_decrypt(privkey_info, hex_password)
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pk = ECPrivateKey(pk).to_hex()
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except Exception as e:
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if BLOCKSTACK_TEST:
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log.exception(e)
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return {'error': 'Invalid password'}
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return {'address': virtualchain.BitcoinPrivateKey(pk).public_key().address(), 'private_key_info': pk}
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return {'error': 'Invalid encrypted private key info'}
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def make_wallet_keys(data_privkey=None, owner_privkey=None, payment_privkey=None):
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"""
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For testing. DO NOT USE
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"""
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ret = {
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'owner_privkey': None,
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'data_privkey': None,
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'payment_privkey': None,
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}
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if data_privkey is not None:
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if not is_singlesig(data_privkey):
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raise ValueError('Invalid data key info')
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pk_data = virtualchain.BitcoinPrivateKey(data_privkey).to_hex()
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ret['data_privkey'] = pk_data
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if owner_privkey is not None:
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if is_multisig(owner_privkey):
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pks = [virtualchain.BitcoinPrivateKey(pk).to_hex() for pk in owner_privkey['private_keys']]
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m, pubs = virtualchain.parse_multisig_redeemscript(owner_privkey['redeem_script'])
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ret['owner_privkey'] = virtualchain.make_multisig_info(m, pks)
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elif is_singlesig(owner_privkey):
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pk_owner = virtualchain.BitcoinPrivateKey(owner_privkey).to_hex()
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ret['owner_privkey'] = pk_owner
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else:
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raise ValueError('Invalid owner key info')
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if payment_privkey is None:
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return ret
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if is_multisig(payment_privkey):
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pks = [virtualchain.BitcoinPrivateKey(pk).to_hex() for pk in payment_privkey['private_keys']]
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m, pubs = virtualchain.parse_multisig_redeemscript(payment_privkey['redeem_script'])
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ret['payment_privkey'] = virtualchain.make_multisig_info(m, pks)
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elif is_singlesig(payment_privkey):
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pk_payment = virtualchain.BitcoinPrivateKey(payment_privkey).to_hex()
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ret['payment_privkey'] = pk_payment
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else:
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raise ValueError('Invalid payment key info')
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return ret
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def get_data_privkey(user_zonefile, wallet_keys=None, config_path=CONFIG_PATH):
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"""
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Get the user's data private key.
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Use the private key that corresponds to the data public key in their zonefile.
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(If the have a designated data public key, use the data private key. If they don't,
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use the owner private key).
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Return None if not set
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"""
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from .wallet import get_wallet
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from .user import user_zonefile_data_pubkey
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try:
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data_pubkey = user_zonefile_data_pubkey(user_zonefile)
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except ValueError:
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log.error('Multiple pubkeys defined')
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return None
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if data_pubkey is None:
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log.error('No data public key defined')
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return None
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wallet_keys = {} if wallet_keys is None else wallet_keys
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if wallet_keys.get('data_privkey', None) is None:
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log.error('No data private key set')
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return None
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wallet = get_wallet(config_path=CONFIG_PATH) if wallet_keys is None else wallet_keys
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assert wallet, 'Failed to get wallet'
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data_privkey = wallet.get('data_privkey', None)
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is_matching_keys = ECPrivateKey(data_privkey).public_key().to_hex() == data_pubkey
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if data_privkey is None or not is_matching_keys:
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# data private key doesn't match zonefile
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log.error('Data private key does not match zonefile')
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return None
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# zonefile matches data privkey
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return ECPrivateKey(data_privkey).to_hex()
|
|
|
|
|
|
def get_data_privkey_info(user_zonefile, wallet_keys=None, config_path=CONFIG_PATH):
|
|
"""
|
|
Get the user's data private key info
|
|
"""
|
|
|
|
privkey = get_data_privkey(user_zonefile, wallet_keys=wallet_keys, config_path=config_path)
|
|
return privkey
|
|
|
|
|
|
def get_owner_privkey_info(wallet_keys=None, config_path=CONFIG_PATH):
|
|
"""
|
|
Get the user's owner private key info
|
|
"""
|
|
from .wallet import get_wallet
|
|
|
|
wallet = get_wallet(config_path=CONFIG_PATH) if wallet_keys is None else wallet_keys
|
|
assert wallet is not None, 'Failed to get wallet'
|
|
|
|
owner_privkey_info = wallet.get('owner_privkey', None)
|
|
assert owner_privkey_info is not None, 'No owner private key set'
|
|
|
|
return owner_privkey_info
|
|
|
|
|
|
def get_payment_privkey_info(wallet_keys=None, config_path=CONFIG_PATH):
|
|
"""
|
|
Get the user's payment private key info
|
|
"""
|
|
from .wallet import get_wallet
|
|
|
|
wallet = get_wallet(config_path=CONFIG_PATH) if wallet_keys is None else wallet_keys
|
|
assert wallet is not None, 'Failed to get wallet'
|
|
|
|
payment_privkey_info = wallet.get('payment_privkey', None)
|
|
assert payment_privkey_info is not None, 'No payment private key set'
|
|
|
|
return payment_privkey_info
|
|
|
|
|
|
def get_privkey_info_address(privkey_info):
|
|
"""
|
|
Get the address of private key information:
|
|
* if it's a single private key, then calculate the address.
|
|
* if it's a multisig info dict, then get the p2sh address
|
|
"""
|
|
if privkey_info is None:
|
|
return
|
|
|
|
if is_singlesig(privkey_info):
|
|
return virtualchain.BitcoinPrivateKey(privkey_info).public_key().address()
|
|
|
|
if is_multisig(privkey_info):
|
|
return virtualchain.make_multisig_address(privkey_info['redeem_script'])
|
|
|
|
raise ValueError('Invalid private key info')
|
|
|
|
|
|
def get_privkey_info_params(privkey_info, config_path=CONFIG_PATH):
|
|
"""
|
|
Get the parameters that characterize a private key
|
|
info bundle: the number of private keys, and the
|
|
number of signatures required to make a valid
|
|
transaction.
|
|
* for single private keys, this is (1, 1)
|
|
* for multisig info dicts, this is (m, n)
|
|
|
|
Return (m, n) on success
|
|
Return (None, None) on failure
|
|
"""
|
|
|
|
if privkey_info is None:
|
|
from .backend.blockchain import get_block_height
|
|
|
|
key_config = (2, 3)
|
|
log.warning('No private key info given, assuming {} key config'.format(key_config))
|
|
return key_config
|
|
|
|
if is_singlesig( privkey_info ):
|
|
return (1, 1)
|
|
|
|
elif is_multisig( privkey_info ):
|
|
m, pubs = virtualchain.parse_multisig_redeemscript(privkey_info['redeem_script'])
|
|
if m is None or pubs is None:
|
|
return None, None
|
|
return m, len(pubs)
|
|
|
|
return None, None
|
|
|
|
|
|
def get_pubkey_addresses(pubkey):
|
|
"""
|
|
Get the compressed and uncompressed addresses
|
|
for a public key. Useful for verifying
|
|
signatures by key address.
|
|
|
|
If we're running in testnet mode, then use
|
|
the testnet version byte.
|
|
|
|
Return (compressed address, uncompressed address)
|
|
"""
|
|
version_byte = virtualchain.version_byte
|
|
compressed_address, uncompressed_address = None, None
|
|
|
|
pubkey = ECPublicKey(pubkey, version_byte=version_byte)
|
|
pubkey_bin = pubkey.to_bin()
|
|
|
|
if pubkey._type == PubkeyType.compressed:
|
|
compressed_address = pubkey.address()
|
|
uncompressed_address = decompress(pubkey_bin)
|
|
hashed_address = bin_hash160(uncompressed_address)
|
|
uncompressed_address = bin_hash160_to_address(hashed_address, version_byte=version_byte)
|
|
elif pubkey._type == PubkeyType.uncompressed:
|
|
uncompressed_address = pubkey.address()
|
|
compressed_address = compress(pubkey_bin)
|
|
hashed_address = bin_hash160(compressed_address)
|
|
compressed_address = bin_hash160_to_address(hashed_address, version_byte=version_byte)
|
|
else:
|
|
raise Exception('Invalid public key')
|
|
|
|
return compressed_address, uncompressed_address
|
|
|
|
|
|
def get_pubkey_hex( privatekey_hex ):
|
|
"""
|
|
Get the uncompressed hex form of a private key
|
|
"""
|
|
|
|
if len(privatekey_hex) > 64:
|
|
assert privatekey_hex[-2:] == '01'
|
|
privatekey_hex = privatekey_hex[:64]
|
|
|
|
# get hex public key
|
|
privatekey_int = int(privatekey_hex, 16)
|
|
pubkey_parts = fastecdsa.keys.get_public_key( privatekey_int, curve=fastecdsa.curve.secp256k1 )
|
|
pubkey_hex = "04{:064x}{:064x}".format(pubkey_parts[0], pubkey_parts[1])
|
|
return pubkey_hex
|
|
|
|
|
|
def get_uncompressed_private_and_public_keys( privkey_str ):
|
|
"""
|
|
Get the private and public keys from a private key string.
|
|
Make sure the both are *uncompressed*
|
|
"""
|
|
pk = virtualchain.BitcoinPrivateKey(str(privkey_str))
|
|
pk_hex = pk.to_hex()
|
|
|
|
# force uncompressed
|
|
if len(pk_hex) > 64:
|
|
assert pk_hex[-2:] == '01'
|
|
pk_hex = pk_hex[:64]
|
|
|
|
pubk_hex = virtualchain.BitcoinPrivateKey(pk_hex).public_key().to_hex()
|
|
return pk_hex, pubk_hex
|
|
|