| 21 | CryptographyHMACKey is None, reason="Multiple crypto backends not available for backend compatibility tests" |
| 22 | ) |
| 23 | class TestBackendAesCompatibility: |
| 24 | @pytest.mark.parametrize("backend_sign", CRYPTO_BACKENDS) |
| 25 | @pytest.mark.parametrize("backend_verify", CRYPTO_BACKENDS) |
| 26 | @pytest.mark.parametrize("algorithm", SUPPORTED_ALGORITHMS) |
| 27 | def test_encryption_parity(self, backend_sign, backend_verify, algorithm): |
| 28 | if "128" in algorithm: |
| 29 | key = b"8slRzzty6dKMaFCP" |
| 30 | elif "192" in algorithm: |
| 31 | key = b"8slRzzty6dKMaFCP8slRzzty" |
| 32 | else: |
| 33 | key = b"8slRzzty6dKMaFCP8slRzzty6dKMaFCP" |
| 34 | |
| 35 | key_sign = backend_sign(key, algorithm) |
| 36 | key_verify = backend_verify(key, algorithm) |
| 37 | |
| 38 | message = b"test" |
| 39 | |
| 40 | digest = key_sign.sign(message) |
| 41 | |
| 42 | assert key_verify.verify(message, digest) |
| 43 | |
| 44 | assert not key_verify.verify(b"not the message", digest) |
| 45 | |
| 46 | assert not key_verify.verify(digest, b"not the digest") |
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