doing assertions for now, to please mypy

pyca · Jan 10, 2025 · 0b84feb · 0b84feb
1 parent 794db04
commit 0b84feb
Showing 1 changed file with 8 additions and 10 deletions.
diff --git a/src/cryptography/hazmat/primitives/serialization/pkcs7.py b/src/cryptography/hazmat/primitives/serialization/pkcs7.py
@@ -372,16 +372,14 @@ def _smime_signed_decode(data: bytes) -> tuple[bytes | None, bytes]:
             raise ValueError(
                 "Malformed multipart/signed message: must be multipart"
             )
-        if not isinstance(payload[0], email.message.Message):
-            raise ValueError(
-                "Malformed multipart/signed message: first part (content) "
-                "must be a MIME message"
-            )
-        if not isinstance(payload[1], email.message.Message):
-            raise ValueError(
-                "Malformed multipart/signed message: second part (signature) "
-                "must be a MIME message"
-            )
+        assert isinstance(payload[0], email.message.Message), (
+            "Malformed multipart/signed message: first part (content) "
+            "must be a MIME message"
+        )
+        assert isinstance(payload[1], email.message.Message), (
+            "Malformed multipart/signed message: second part (signature) "
+            "must be a MIME message"
+        )
         return (
             bytes(payload[0].get_payload(decode=True)),
             bytes(payload[1].get_payload(decode=True)),