pycryptodome fails with google appengine cloud SDK, pycrypto works

[katzlbt (Dr. Thomas)]

Google appengine standard environment (Google cloud SDK) uses a sandbox that prohibits the use of _ctype. pycryptodome uses _ctype, which fails to import in the cloud sdk sandbox "ImportError: No module named _ctypes". This was really hard to diagnose correctly.

This incompatibility should be documented in the package descriptions of both ports, as pycryptodome is not a 100% replacement for pycrypto.

WORKAROUND: download and manually build pycrypto-2.6.1

Traceback (most recent call last):

File "/Users/cat/google-cloud-sdk/platform/google_appengine/python27/sdk/google/appengine/runtime/wsgi.py", line 238, in Handle

handler = _config_handle.add_wsgi_middleware(self._LoadHandler())

File "/Users/cat/google-cloud-sdk/platform/google_appengine/python27/sdk/google/appengine/runtime/wsgi.py", line 309, in _LoadHandler

handler, path, err = LoadObject(self._handler)

File "/Users/cat/google-cloud-sdk/platform/google_appengine/python27/sdk/google/appengine/runtime/wsgi.py", line 83, in LoadObject

obj = import(path[0])

File "/Users/cat/repositories/locandy-web/app/main.py", line 65, in <module>

pyramid_config = app_config()

File "/Users/cat/repositories/locandy-web/app/main.py", line 31, in app_config

config.include('pyramid_beaker') # --> includeme: of pyramid_beaker

File "distlib/pyramid/config/init.py", line 808, in include

c = self.maybe_dotted(callable)

File "distlib/pyramid/config/init.py", line 912, in maybe_dotted

return self.name_resolver.maybe_resolve(dotted)

File "distlib/pyramid/path.py", line 320, in maybe_resolve

return self._resolve(dotted, package)

File "distlib/pyramid/path.py", line 327, in _resolve

return self._zope_dottedname_style(dotted, package)

File "distlib/pyramid/path.py", line 376, in _zope_dottedname_style

found = import(used)

File "distlib/pyramid_beaker/init.py", line 3, in <module>

from beaker import cache

File "distlib/beaker/cache.py", line 15, in <module>

from beaker.crypto.util import sha1

File "distlib/beaker/crypto/init.py", line 9, in <module>

from beaker.crypto.pycrypto import getKeyLength, aesEncrypt, aesDecrypt

File "distlib/beaker/crypto/pycrypto.py", line 17, in <module>

from Crypto.Cipher import AES

File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Crypto/Cipher/init.py", line 27, in <module>

from Crypto.Cipher._mode_ecb import _create_ecb_cipher

File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Crypto/Cipher/_mode_ecb.py", line 29, in <module>

from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,

File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Crypto/Util/_raw_api.py", line 164, in <module>

INFO 2023-10-24 14:16:28,661 module.py:862] default: "GET /_ah/warmup HTTP/1.1" 500 1919

import ctypes

File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ctypes/init.py", line 7, in <module>

from _ctypes import Union, Structure, Array

File "/Users/cat/google-cloud-sdk/platform/google_appengine/python27/sdk/google/appengine/tools/devappserver2/python/runtime/sandbox.py", line 1144, in load_module

raise ImportError('No module named %s' % fullname)

ImportError: No module named _ctypes