bito-code-review[bot] commented on code in PR #43074:
URL: https://github.com/apache/superset/pull/43074#discussion_r3762403766
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tests/unit_tests/utils/encrypt_test.py:
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@@ -75,6 +75,30 @@ def test_default_engine_is_aes_cbc() -> None:
assert isinstance(field.engine, AesEngine)
+def test_trailing_asterisk_survives_round_trip() -> None:
+ """A secret ending in a literal '*' must not be truncated on decrypt.
+
+ Reported in apache/superset#32664: a Redshift/Postgres password ending in
+ '*' connects fine (Test Connection succeeds) but authentication fails
+ after the Database row is saved and reloaded. The default AES-CBC field
+ uses sqlalchemy_utils' "naive" padding scheme, which pads short values
+ with literal '*' bytes and unpads by unconditionally stripping every
+ trailing '*' on decrypt (see NaivePadding.unpad). That strips a real
+ trailing '*' in the secret right along with the padding, silently
+ corrupting any password/token that happens to end in that character.
+ """
+ field = SQLAlchemyUtilsAdapter().create(SECRET, String(1024))
+
+ encrypted = field.process_bind_param("mypassword*", DIALECT)
+ decrypted = field.process_result_value(encrypted, DIALECT)
+
+ assert decrypted == "mypassword*", (
+ f"expected the trailing '*' to survive the round trip, got
{decrypted!r} "
+ "-- the default naive padding scheme strips real trailing '*' bytes "
+ "along with its own padding"
+ )
Review Comment:
<!-- Bito Reply -->
Since the fix for the underlying issue is included in the same pull request,
the test will pass as intended. Marking the test as xfail is not necessary in
this case, as the test correctly validates the expected behavior once the fix
is applied.
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