| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| # implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """ |
| Test using the NIST Test Vectors |
| """ |
| |
| from __future__ import absolute_import, division, print_function |
| |
| import binascii |
| import os |
| |
| import pytest |
| |
| from cryptography.primitives.block import BlockCipher, ciphers, modes |
| |
| from ..utils import load_nist_vectors_from_file |
| |
| |
| def parameterize_kat_encrypt(fname): |
| return pytest.mark.parametrize(("key", "iv", "plaintext", "ciphertext"), |
| load_nist_vectors_from_file( |
| os.path.join("AES/KAT/", fname), |
| "ENCRYPT", |
| ["key", "iv", "plaintext", "ciphertext"], |
| ), |
| ) |
| |
| |
| def paramterize_mmt_encrypt(fname): |
| return pytest.mark.parametrize(("key", "iv", "plaintext", "ciphertext"), |
| load_nist_vectors_from_file( |
| os.path.join("AES/MMT/", fname), |
| "ENCRYPT", |
| ["key", "iv", "plaintext", "ciphertext"], |
| ) |
| ) |
| |
| |
| class TestAES_CBC(object): |
| @parameterize_kat_encrypt("CBCGFSbox128.rsp") |
| def test_KAT_GFSbox_128_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @parameterize_kat_encrypt("CBCGFSbox192.rsp") |
| def test_KAT_GFSbox_192_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @parameterize_kat_encrypt("CBCGFSbox256.rsp") |
| def test_KAT_GFSbox_256_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @parameterize_kat_encrypt("CBCKeySbox128.rsp") |
| def test_KAT_KeySbox_128_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @parameterize_kat_encrypt("CBCKeySbox192.rsp") |
| def test_KAT_KeySbox_192_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @parameterize_kat_encrypt("CBCKeySbox256.rsp") |
| def test_KAT_KeySbox_256_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @parameterize_kat_encrypt("CBCVarKey128.rsp") |
| def test_KAT_VarKey_128_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @parameterize_kat_encrypt("CBCVarKey192.rsp") |
| def test_KAT_VarKey_192_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @parameterize_kat_encrypt("CBCVarKey256.rsp") |
| def test_KAT_VarKey_256_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @parameterize_kat_encrypt("CBCVarTxt128.rsp") |
| def test_KAT_VarTxt_128_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @parameterize_kat_encrypt("CBCVarTxt192.rsp") |
| def test_KAT_VarTxt_192_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @parameterize_kat_encrypt("CBCVarTxt256.rsp") |
| def test_KAT_VarTxt_256_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @paramterize_mmt_encrypt("CBCMMT128.rsp") |
| def test_MMT_128_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @paramterize_mmt_encrypt("CBCMMT192.rsp") |
| def test_MMT_192_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |
| |
| @paramterize_mmt_encrypt("CBCMMT256.rsp") |
| def test_MMT_256_encrypt(self, key, iv, plaintext, ciphertext): |
| cipher = BlockCipher( |
| ciphers.AES(binascii.unhexlify(key)), |
| modes.CBC(binascii.unhexlify(iv)), |
| ) |
| actual_ciphertext = cipher.encrypt(binascii.unhexlify(plaintext)) |
| actual_ciphertext += cipher.finalize() |
| assert binascii.hexlify(actual_ciphertext) == ciphertext |