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Added AES XTS tests, with and without IV.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
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Pol Henarejos
2023-03-22 23:29:31 +01:00
parent 4d647ba3c8
commit ad3304a384
1 changed files with 40 additions and 0 deletions
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40
tests/pico-hsm/test_052_aes_ext.py
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@@ -219,3 +219,43 @@ def test_aes_gcm_iv(device, size):
assert(dtA == dtB) assert(dtA == dtB)
assert(dtA == MESSAGE) assert(dtA == MESSAGE)
device.delete_key(keyid) device.delete_key(keyid)
@pytest.mark.parametrize(
"size", [256, 512]
)
def test_aes_xts_no_iv(device, size):
pkey, keyid = generate_key(device, size)
ctA = device.aes(keyid, EncryptionMode.ENCRYPT, AES.XTS, MESSAGE)
iv = b'\x00' * 16
cipher = Cipher(algorithms.AES(pkey), modes.XTS(iv))
encryptor = cipher.encryptor()
ctB = encryptor.update(MESSAGE) + encryptor.finalize()
assert(ctA == ctB)
dtA = device.aes(keyid, EncryptionMode.DECRYPT, AES.XTS, ctA)
decryptor = cipher.decryptor()
dtB = decryptor.update(ctB) + decryptor.finalize()
assert(dtA == dtB)
assert(dtA == MESSAGE)
device.delete_key(keyid)
@pytest.mark.parametrize(
"size", [256, 512]
)
def test_aes_xts_iv(device, size):
pkey, keyid = generate_key(device, size)
iv = os.urandom(16)
ctA = device.aes(keyid, EncryptionMode.ENCRYPT, AES.XTS, MESSAGE, iv=iv)
cipher = Cipher(algorithms.AES(pkey), modes.XTS(iv))
encryptor = cipher.encryptor()
ctB = encryptor.update(MESSAGE) + encryptor.finalize()
assert(ctA == ctB)
dtA = device.aes(keyid, EncryptionMode.DECRYPT, AES.XTS, ctA, iv=iv)
decryptor = cipher.decryptor()
dtB = decryptor.update(ctB) + decryptor.finalize()
assert(dtA == dtB)
assert(dtA == MESSAGE)
device.delete_key(keyid)