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-rw-r--r--tests/hazmat/primitives/test_aes.py4
1 files changed, 1 insertions, 3 deletions
diff --git a/tests/hazmat/primitives/test_aes.py b/tests/hazmat/primitives/test_aes.py
index f079ae4f..2c3e5f90 100644
--- a/tests/hazmat/primitives/test_aes.py
+++ b/tests/hazmat/primitives/test_aes.py
@@ -274,9 +274,7 @@ class TestAESModeGCM(object):
modes.GCM(b"\x01" * 16),
backend=backend
).encryptor()
- # 16 bytes less than the AAD limit
- near_limit_bytes = (2 ** 64 - 128) // 8
- encryptor._aad_bytes_processed = near_limit_bytes
+ encryptor._aad_bytes_processed = modes.GCM._MAX_AAD_BYTES - 16
encryptor.authenticate_additional_data(b"0" * 16)
assert encryptor._aad_bytes_processed == modes.GCM._MAX_AAD_BYTES
with pytest.raises(ValueError):