# 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.

"""
Tests using the CRYPTREC (Camellia) Test Vectors
"""

from __future__ import absolute_import, division, print_function

import binascii
import os

from cryptography.hazmat.primitives.block import ciphers, modes

from .utils import generate_encrypt_test
from ...utils import (
    load_cryptrec_vectors_from_file, load_openssl_vectors_from_file
)


class TestCamelliaECB(object):
    test_ECB = generate_encrypt_test(
        load_cryptrec_vectors_from_file,
        os.path.join("ciphers", "Camellia"),
        [
            "camellia-128-ecb.txt",
            "camellia-192-ecb.txt",
            "camellia-256-ecb.txt"
        ],
        lambda key: ciphers.Camellia(binascii.unhexlify((key))),
        lambda key: modes.ECB(),
        only_if=lambda backend: backend.ciphers.supported(
            ciphers.Camellia("\x00" * 16), modes.ECB()
        ),
        skip_message="Does not support Camellia ECB",
    )


class TestCamelliaCBC(object):
    test_CBC = generate_encrypt_test(
        load_openssl_vectors_from_file,
        os.path.join("ciphers", "Camellia"),
        ["camellia-cbc.txt"],
        lambda key, iv: ciphers.Camellia(binascii.unhexlify(key)),
        lambda key, iv: modes.CBC(binascii.unhexlify(iv)),
        only_if=lambda backend: backend.ciphers.supported(
            ciphers.Camellia("\x00" * 16), modes.CBC("\x00" * 16)
        ),
        skip_message="Does not support Camellia CBC",
    )


class TestCamelliaOFB(object):
    test_OFB = generate_encrypt_test(
        load_openssl_vectors_from_file,
        os.path.join("ciphers", "Camellia"),
        ["camellia-ofb.txt"],
        lambda key, iv: ciphers.Camellia(binascii.unhexlify(key)),
        lambda key, iv: modes.OFB(binascii.unhexlify(iv)),
        only_if=lambda backend: backend.ciphers.supported(
            ciphers.Camellia("\x00" * 16), modes.OFB("\x00" * 16)
        ),
        skip_message="Does not support Camellia OFB",
    )


class TestCamelliaCFB(object):
    test_CFB = generate_encrypt_test(
        load_openssl_vectors_from_file,
        os.path.join("ciphers", "Camellia"),
        ["camellia-cfb.txt"],
        lambda key, iv: ciphers.Camellia(binascii.unhexlify(key)),
        lambda key, iv: modes.CFB(binascii.unhexlify(iv)),
        only_if=lambda backend: backend.ciphers.supported(
            ciphers.Camellia("\x00" * 16), modes.CFB("\x00" * 16)
        ),
        skip_message="Does not support Camellia CFB",
    )