Merge pull request #604 from reaperhulk/cast5-cbc-and-more

CAST5 Support (ECB, CBC, CFB, OFB)

1 files changed, 92 insertions, 0 deletions

diff --git a/tests/hazmat/primitives/test_cast5.py b/tests/hazmat/primitives/test_cast5.py
new file mode 100644
index 00000000..682b4496
--- /dev/null
+++ b/tests/hazmat/primitives/test_cast5.py
@@ -0,0 +1,92 @@
+# 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 os
+
+import pytest
+
+from cryptography.hazmat.primitives.ciphers import algorithms, modes
+
+from .utils import generate_encrypt_test
+from ...utils import load_nist_vectors
+
+
+@pytest.mark.supported(
+    only_if=lambda backend: backend.cipher_supported(
+        algorithms.CAST5("\x00" * 16), modes.ECB()
+    ),
+    skip_message="Does not support CAST5 ECB",
+)
+@pytest.mark.cipher
+class TestCAST5_ECB(object):
+    test_ECB = generate_encrypt_test(
+        load_nist_vectors,
+        os.path.join("ciphers", "CAST5"),
+        ["cast5-ecb.txt"],
+        lambda key, **kwargs: algorithms.CAST5(binascii.unhexlify((key))),
+        lambda **kwargs: modes.ECB(),
+    )
+
+
+@pytest.mark.supported(
+    only_if=lambda backend: backend.cipher_supported(
+        algorithms.CAST5("\x00" * 16), modes.CBC("\x00" * 8)
+    ),
+    skip_message="Does not support CAST5 CBC",
+)
+@pytest.mark.cipher
+class TestCAST5_CBC(object):
+    test_CBC = generate_encrypt_test(
+        load_nist_vectors,
+        os.path.join("ciphers", "CAST5"),
+        ["cast5-cbc.txt"],
+        lambda key, **kwargs: algorithms.CAST5(binascii.unhexlify((key))),
+        lambda iv, **kwargs: modes.CBC(binascii.unhexlify(iv))
+    )
+
+
+@pytest.mark.supported(
+    only_if=lambda backend: backend.cipher_supported(
+        algorithms.CAST5("\x00" * 16), modes.OFB("\x00" * 8)
+    ),
+    skip_message="Does not support CAST5 OFB",
+)
+@pytest.mark.cipher
+class TestCAST5_OFB(object):
+    test_OFB = generate_encrypt_test(
+        load_nist_vectors,
+        os.path.join("ciphers", "CAST5"),
+        ["cast5-ofb.txt"],
+        lambda key, **kwargs: algorithms.CAST5(binascii.unhexlify((key))),
+        lambda iv, **kwargs: modes.OFB(binascii.unhexlify(iv))
+    )
+
+
+@pytest.mark.supported(
+    only_if=lambda backend: backend.cipher_supported(
+        algorithms.CAST5("\x00" * 16), modes.CFB("\x00" * 8)
+    ),
+    skip_message="Does not support CAST5 CFB",
+)
+@pytest.mark.cipher
+class TestCAST5_CFB(object):
+    test_CFB = generate_encrypt_test(
+        load_nist_vectors,
+        os.path.join("ciphers", "CAST5"),
+        ["cast5-cfb.txt"],
+        lambda key, **kwargs: algorithms.CAST5(binascii.unhexlify((key))),
+        lambda iv, **kwargs: modes.CFB(binascii.unhexlify(iv))
+    )