1 files changed, 86 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/pypdf/_crypt_providers/__init__.py b/.venv/lib/python3.12/site-packages/pypdf/_crypt_providers/__init__.py
new file mode 100644
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+++ b/.venv/lib/python3.12/site-packages/pypdf/_crypt_providers/__init__.py
@@ -0,0 +1,86 @@
+# Copyright (c) 2023, exiledkingcc
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright notice,
+# this list of conditions and the following disclaimer in the documentation
+# and/or other materials provided with the distribution.
+# * The name of the author may not be used to endorse or promote products
+# derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+from pypdf._crypt_providers._base import CryptBase, CryptIdentity
+
+try:
+    from pypdf._crypt_providers._cryptography import (
+        CryptAES,
+        CryptRC4,
+        aes_cbc_decrypt,
+        aes_cbc_encrypt,
+        aes_ecb_decrypt,
+        aes_ecb_encrypt,
+        crypt_provider,
+        rc4_decrypt,
+        rc4_encrypt,
+    )
+    from pypdf._utils import Version
+
+    if Version(crypt_provider[1]) <= Version("3.0"):
+        # This is due to the backend parameter being required back then:
+        # https://cryptography.io/en/latest/changelog/#v3-1
+        raise ImportError("cryptography<=3.0 is not supported")  # pragma: no cover
+except ImportError:
+    try:
+        from pypdf._crypt_providers._pycryptodome import (  # type: ignore
+            CryptAES,
+            CryptRC4,
+            aes_cbc_decrypt,
+            aes_cbc_encrypt,
+            aes_ecb_decrypt,
+            aes_ecb_encrypt,
+            crypt_provider,
+            rc4_decrypt,
+            rc4_encrypt,
+        )
+    except ImportError:
+        from pypdf._crypt_providers._fallback import (  # type: ignore
+            CryptAES,
+            CryptRC4,
+            aes_cbc_decrypt,
+            aes_cbc_encrypt,
+            aes_ecb_decrypt,
+            aes_ecb_encrypt,
+            crypt_provider,
+            rc4_decrypt,
+            rc4_encrypt,
+        )
+
+__all__ = [
+    "crypt_provider",
+    "CryptBase",
+    "CryptIdentity",
+    "CryptRC4",
+    "CryptAES",
+    "rc4_encrypt",
+    "rc4_decrypt",
+    "aes_ecb_encrypt",
+    "aes_ecb_decrypt",
+    "aes_cbc_encrypt",
+    "aes_cbc_decrypt",
+]