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Diffstat (limited to 'tests/hazmat/primitives/test_block.py')
| -rw-r--r-- | tests/hazmat/primitives/test_block.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tests/hazmat/primitives/test_block.py b/tests/hazmat/primitives/test_block.py index ad56f77e..52221cb6 100644 --- a/tests/hazmat/primitives/test_block.py +++ b/tests/hazmat/primitives/test_block.py @@ -139,3 +139,11 @@ class TestModeValidation(object): modes.CFB(b"abc"), backend, ) + + def test_ctr(self, backend): + with pytest.raises(ValueError): + Cipher( + algorithms.AES(b"\x00" * 16), + modes.CFB(b"abc"), + backend, + ) |