old_contents: # 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.
  
  from __future__ import absolute_import, division, print_function
  
  import binascii
  
  import pytest
  
  from cryptography.hazmat.primitives.block.ciphers import (
      AES, Camellia, TripleDES,
  )
  
  
  class TestAES(object):
      @pytest.mark.parametrize(("key", "keysize"), [
          (b"0" * 32, 128),
          (b"0" * 48, 192),
          (b"0" * 64, 256),
      ])
      def test_key_size(self, key, keysize):
          cipher = AES(binascii.unhexlify(key))
          assert cipher.key_size == keysize
  
      def test_invalid_key_size(self):
          with pytest.raises(ValueError):
              AES(binascii.unhexlify(b"0" * 12))
  
  
  class TestCamellia(object):
      @pytest.mark.parametrize(("key", "keysize"), [
          (b"0" * 32, 128),
          (b"0" * 48, 192),
          (b"0" * 64, 256),
      ])
      def test_key_size(self, key, keysize):
          cipher = Camellia(binascii.unhexlify(key))
          assert cipher.key_size == keysize
  
      def test_invalid_key_size(self):
          with pytest.raises(ValueError):
              Camellia(binascii.unhexlify(b"0" * 12))
  
  
  class TestTripleDES(object):
      @pytest.mark.parametrize("key", [
          b"0" * 16,
          b"0" * 32,
          b"0" * 48,
      ])
      def test_key_size(self, key):
          cipher = TripleDES(binascii.unhexlify(key))
          assert cipher.key_size == 192
  
      def test_invalid_key_size(self):
          with pytest.raises(ValueError):
              TripleDES(binascii.unhexlify(b"0" * 12))
  
new_contents: # 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.
  
  from __future__ import absolute_import, division, print_function
  
  import binascii
  
  import pytest
  
  from cryptography.hazmat.primitives.block.ciphers import (
      AES, Camellia, TripleDES, Blowfish
  )
  
  
  class TestAES(object):
      @pytest.mark.parametrize(("key", "keysize"), [
          (b"0" * 32, 128),
          (b"0" * 48, 192),
          (b"0" * 64, 256),
      ])
      def test_key_size(self, key, keysize):
          cipher = AES(binascii.unhexlify(key))
          assert cipher.key_size == keysize
  
      def test_invalid_key_size(self):
          with pytest.raises(ValueError):
              AES(binascii.unhexlify(b"0" * 12))
  
  
  class TestCamellia(object):
      @pytest.mark.parametrize(("key", "keysize"), [
          (b"0" * 32, 128),
          (b"0" * 48, 192),
          (b"0" * 64, 256),
      ])
      def test_key_size(self, key, keysize):
          cipher = Camellia(binascii.unhexlify(key))
          assert cipher.key_size == keysize
  
      def test_invalid_key_size(self):
          with pytest.raises(ValueError):
              Camellia(binascii.unhexlify(b"0" * 12))
  
  
  class TestTripleDES(object):
      @pytest.mark.parametrize("key", [
          b"0" * 16,
          b"0" * 32,
          b"0" * 48,
      ])
      def test_key_size(self, key):
          cipher = TripleDES(binascii.unhexlify(key))
          assert cipher.key_size == 192
  
      def test_invalid_key_size(self):
          with pytest.raises(ValueError):
              TripleDES(binascii.unhexlify(b"0" * 12))
  
  
  class TestBlowfish(object):
      @pytest.mark.parametrize(("key", "keysize"), [
          (b"0" * (keysize // 4), keysize) for keysize in range(32, 449, 8)
      ])
      def test_key_size(self, key, keysize):
          cipher = Blowfish(binascii.unhexlify(key))
          assert cipher.key_size == keysize
  
      def test_invalid_key_size(self):
          with pytest.raises(ValueError):
              Blowfish(binascii.unhexlify(b"0" * 6))
  
subject: add blowfish cipher key_size tests