[dependencies] Standardize Cryptodome imports

test/test_aes.py

@@ -26,7 +26,7 @@
     key_expansion,
     pad_block,
 )
-from yt_dlp.dependencies import Cryptodome_AES
+from yt_dlp.dependencies import Cryptodome
 from yt_dlp.utils import bytes_to_intlist, intlist_to_bytes
 
 # the encrypted data can be generate with 'devscripts/generate_aes_testdata.py'
@@ -48,7 +48,7 @@ def test_cbc_decrypt(self):
         data = b'\x97\x92+\xe5\x0b\xc3\x18\x91ky9m&\xb3\xb5@\xe6\x27\xc2\x96.\xc8u\x88\xab9-[\x9e|\xf1\xcd'
         decrypted = intlist_to_bytes(aes_cbc_decrypt(bytes_to_intlist(data), self.key, self.iv))
         self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
-        if Cryptodome_AES:
+        if Cryptodome:
             decrypted = aes_cbc_decrypt_bytes(data, intlist_to_bytes(self.key), intlist_to_bytes(self.iv))
             self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
 
@@ -78,7 +78,7 @@ def test_gcm_decrypt(self):
         decrypted = intlist_to_bytes(aes_gcm_decrypt_and_verify(
             bytes_to_intlist(data), self.key, bytes_to_intlist(authentication_tag), self.iv[:12]))
         self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
-        if Cryptodome_AES:
+        if Cryptodome:
             decrypted = aes_gcm_decrypt_and_verify_bytes(
                 data, intlist_to_bytes(self.key), authentication_tag, intlist_to_bytes(self.iv[:12]))
             self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)

test/test_compat.py

@@ -31,6 +31,9 @@ def test_compat_passthrough(self):
         # TODO: Test submodule
         # compat.asyncio.events  # Must not raise error
 
+        with self.assertWarns(DeprecationWarning):
+            compat.compat_pycrypto_AES  # Must not raise error
+
     def test_compat_expanduser(self):
         old_home = os.environ.get('HOME')
         test_str = R'C:\Documents and Settings\тест\Application Data'

yt_dlp/aes.py

@@ -2,17 +2,17 @@
 from math import ceil
 
 from .compat import compat_ord
-from .dependencies import Cryptodome_AES
+from .dependencies import Cryptodome
 from .utils import bytes_to_intlist, intlist_to_bytes
 
-if Cryptodome_AES:
+if Cryptodome:
     def aes_cbc_decrypt_bytes(data, key, iv):
         """ Decrypt bytes with AES-CBC using pycryptodome """
-        return Cryptodome_AES.new(key, Cryptodome_AES.MODE_CBC, iv).decrypt(data)
+        return Cryptodome.Cipher.AES.new(key, Cryptodome.Cipher.AES.MODE_CBC, iv).decrypt(data)
 
     def aes_gcm_decrypt_and_verify_bytes(data, key, tag, nonce):
         """ Decrypt bytes with AES-GCM using pycryptodome """
-        return Cryptodome_AES.new(key, Cryptodome_AES.MODE_GCM, nonce).decrypt_and_verify(data, tag)
+        return Cryptodome.Cipher.AES.new(key, Cryptodome.Cipher.AES.MODE_GCM, nonce).decrypt_and_verify(data, tag)
 
 else:
     def aes_cbc_decrypt_bytes(data, key, iv):

yt_dlp/compat/compat_utils.py

@@ -10,16 +10,12 @@
 
 
 def get_package_info(module):
-    parent = module.__name__.split('.')[0]
-    parent_module = None
-    with contextlib.suppress(ImportError):
-        parent_module = importlib.import_module(parent)
-
-    for attr in ('__version__', 'version_string', 'version'):
-        version = getattr(parent_module, attr, None)
-        if version is not None:
-            break
-    return _Package(getattr(module, '_yt_dlp__identifier', parent), str(version))
+    return _Package(
+        name=getattr(module, '_yt_dlp__identifier', module.__name__),
+        version=str(next(filter(None, (
+            getattr(module, attr, None)
+            for attr in ('__version__', 'version_string', 'version')
+        )), None)))
 
 
 def _is_package(module):

yt_dlp/dependencies/Cryptodome.py

@@ -0,0 +1,38 @@
+import importlib
+
+from ..compat import functools
+from ..compat.compat_utils import EnhancedModule, passthrough_module
+
+EnhancedModule(__name__)
+
+try:
+    import Cryptodome as _parent
+except ImportError:
+    try:
+        import Crypto as _parent
+    except (ImportError, SyntaxError):  # Old Crypto gives SyntaxError in newer Python
+        _parent = EnhancedModule('Cryptodome')
+        __bool__ = lambda: False
+
+
+@functools.cache
+def __getattr__(name):
+    try:
+        submodule = importlib.import_module(f'.{name}', _parent.__name__)
+    except ImportError:
+        return getattr(_parent, name)
+    return passthrough_module(f'{__name__}.{name}', submodule)
+
+
+@property
+@functools.cache
+def _yt_dlp__identifier():
+    if _parent.__name__ == 'Crypto':
+        from Crypto.Cipher import AES
+        try:
+            # In pycrypto, mode defaults to ECB. See:
+            # https://www.pycryptodome.org/en/latest/src/vs_pycrypto.html#:~:text=not%20have%20ECB%20as%20default%20mode
+            AES.new(b'abcdefghijklmnop')
+        except TypeError:
+            return 'pycrypto'
+    return _parent.__name__

yt_dlp/dependencies/__init__.py

@@ -23,24 +23,6 @@
         certifi = None
 
 
-try:
-    from Cryptodome.Cipher import AES as Cryptodome_AES
-except ImportError:
-    try:
-        from Crypto.Cipher import AES as Cryptodome_AES
-    except (ImportError, SyntaxError):  # Old Crypto gives SyntaxError in newer Python
-        Cryptodome_AES = None
-    else:
-        try:
-            # In pycrypto, mode defaults to ECB. See:
-            # https://www.pycryptodome.org/en/latest/src/vs_pycrypto.html#:~:text=not%20have%20ECB%20as%20default%20mode
-            Cryptodome_AES.new(b'abcdefghijklmnop')
-        except TypeError:
-            pass
-        else:
-            Cryptodome_AES._yt_dlp__identifier = 'pycrypto'
-
-
 try:
     import mutagen
 except ImportError:
@@ -84,12 +66,16 @@
         xattr._yt_dlp__identifier = 'pyxattr'
 
 
+from . import Cryptodome
+
 all_dependencies = {k: v for k, v in globals().items() if not k.startswith('_')}
-
-
 available_dependencies = {k: v for k, v in all_dependencies.items() if v}
 
 
+# Deprecated
+Cryptodome_AES = Cryptodome.Cipher.AES if Cryptodome else None
+
+
 __all__ = [
     'all_dependencies',
     'available_dependencies',

yt_dlp/downloader/hls.py

@@ -7,7 +7,7 @@
 from .external import FFmpegFD
 from .fragment import FragmentFD
 from .. import webvtt
-from ..dependencies import Cryptodome_AES
+from ..dependencies import Cryptodome
 from ..utils import bug_reports_message, parse_m3u8_attributes, update_url_query
 
 
@@ -63,7 +63,7 @@ def real_download(self, filename, info_dict):
         can_download, message = self.can_download(s, info_dict, self.params.get('allow_unplayable_formats')), None
         if can_download:
             has_ffmpeg = FFmpegFD.available()
-            no_crypto = not Cryptodome_AES and '#EXT-X-KEY:METHOD=AES-128' in s
+            no_crypto = not Cryptodome and '#EXT-X-KEY:METHOD=AES-128' in s
             if no_crypto and has_ffmpeg:
                 can_download, message = False, 'The stream has AES-128 encryption and pycryptodomex is not available'
             elif no_crypto:

yt_dlp/extractor/bilibili.py

@@ -6,6 +6,7 @@
 import urllib.parse
 
 from .common import InfoExtractor, SearchInfoExtractor
+from ..dependencies import Cryptodome
 from ..utils import (
     ExtractorError,
     GeoRestrictedError,
@@ -893,22 +894,15 @@ def _parse_video_metadata(self, video_data):
         }
 
     def _perform_login(self, username, password):
-        try:
-            from Cryptodome.PublicKey import RSA
-            from Cryptodome.Cipher import PKCS1_v1_5
-        except ImportError:
-            try:
-                from Crypto.PublicKey import RSA
-                from Crypto.Cipher import PKCS1_v1_5
-            except ImportError:
-                raise ExtractorError('pycryptodomex not found. Please install', expected=True)
+        if not Cryptodome:
+            raise ExtractorError('pycryptodomex not found. Please install', expected=True)
 
         key_data = self._download_json(
             'https://passport.bilibili.tv/x/intl/passport-login/web/key?lang=en-US', None,
             note='Downloading login key', errnote='Unable to download login key')['data']
 
-        public_key = RSA.importKey(key_data['key'])
-        password_hash = PKCS1_v1_5.new(public_key).encrypt((key_data['hash'] + password).encode('utf-8'))
+        public_key = Cryptodome.PublicKey.RSA.importKey(key_data['key'])
+        password_hash = Cryptodome.Cipher.PKCS1_v1_5.new(public_key).encrypt((key_data['hash'] + password).encode('utf-8'))
         login_post = self._download_json(
             'https://passport.bilibili.tv/x/intl/passport-login/web/login/password?lang=en-US', None, data=urlencode_postdata({
                 'username': username,

yt_dlp/extractor/ivi.py

@@ -2,11 +2,8 @@
 import re
 
 from .common import InfoExtractor
-from ..utils import (
-    ExtractorError,
-    int_or_none,
-    qualities,
-)
+from ..dependencies import Cryptodome
+from ..utils import ExtractorError, int_or_none, qualities
 
 
 class IviIE(InfoExtractor):
@@ -94,18 +91,8 @@ def _real_extract(self, url):
         for site in (353, 183):
             content_data = (data % site).encode()
             if site == 353:
-                try:
-                    from Cryptodome.Cipher import Blowfish
-                    from Cryptodome.Hash import CMAC
-                    pycryptodome_found = True
-                except ImportError:
-                    try:
-                        from Crypto.Cipher import Blowfish
-                        from Crypto.Hash import CMAC
-                        pycryptodome_found = True
-                    except ImportError:
-                        pycryptodome_found = False
-                        continue
+                if not Cryptodome:
+                    continue
 
                 timestamp = (self._download_json(
                     self._LIGHT_URL, video_id,
@@ -118,7 +105,8 @@ def _real_extract(self, url):
 
                 query = {
                     'ts': timestamp,
-                    'sign': CMAC.new(self._LIGHT_KEY, timestamp.encode() + content_data, Blowfish).hexdigest(),
+                    'sign': Cryptodome.Hash.CMAC.new(self._LIGHT_KEY, timestamp.encode() + content_data,
+                                                     Cryptodome.Cipher.Blowfish).hexdigest(),
                 }
             else:
                 query = {}
@@ -138,7 +126,7 @@ def _real_extract(self, url):
                     extractor_msg = 'Video %s does not exist'
                 elif site == 353:
                     continue
-                elif not pycryptodome_found:
+                elif not Cryptodome:
                     raise ExtractorError('pycryptodomex not found. Please install', expected=True)
                 elif message:
                     extractor_msg += ': ' + message