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crypto: check version of pycryptodomex/cryptography at runtime

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As these pkgs are often provided by the OS package manager (e.g. apt),
the version limits specified in requirements*.txt and setup.py will never
get applied.
This commit is contained in:
SomberNight 2020-10-15 16:25:06 +02:00
parent e4e6c4fb1b
commit 9bc4182924
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1 changed files with 14 additions and 1 deletions
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15
electrum/crypto.py
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@ -30,8 +30,12 @@ import hashlib
import hmac
from typing import Union
from .util import assert_bytes, InvalidPassword, to_bytes, to_string, WalletFileException
from .util import assert_bytes, InvalidPassword, to_bytes, to_string, WalletFileException, versiontuple
from .i18n import _
from .logging import get_logger
_logger = get_logger(__name__)
HAS_PYAES = False
@ -43,7 +47,12 @@ else:
HAS_PYAES = True
HAS_CRYPTODOME = False
MIN_CRYPTODOME_VERSION = "3.7"
try:
import Cryptodome
if versiontuple(Cryptodome.__version__) < versiontuple(MIN_CRYPTODOME_VERSION):
_logger.warning(f"found module 'Cryptodome' but it is too old: {Cryptodome.__version__}<{MIN_CRYPTODOME_VERSION}")
raise Exception()
from Cryptodome.Cipher import ChaCha20_Poly1305 as CD_ChaCha20_Poly1305
from Cryptodome.Cipher import ChaCha20 as CD_ChaCha20
from Cryptodome.Cipher import AES as CD_AES
@ -53,8 +62,12 @@ else:
HAS_CRYPTODOME = True
HAS_CRYPTOGRAPHY = False
MIN_CRYPTOGRAPHY_VERSION = "2.1"
try:
import cryptography
if versiontuple(cryptography.__version__) < versiontuple(MIN_CRYPTOGRAPHY_VERSION):
_logger.warning(f"found module 'cryptography' but it is too old: {cryptography.__version__}<{MIN_CRYPTOGRAPHY_VERSION}")
raise Exception()
from cryptography import exceptions
from cryptography.hazmat.primitives.ciphers import Cipher as CG_Cipher
from cryptography.hazmat.primitives.ciphers import algorithms as CG_algorithms