1 files changed, 60 insertions, 0 deletions
diff --git a/src/cryptography/hazmat/bindings/commoncrypto/binding.py b/src/cryptography/hazmat/bindings/commoncrypto/binding.py
new file mode 100644
index 00000000..bb950aac
--- /dev/null
+++ b/src/cryptography/hazmat/bindings/commoncrypto/binding.py
@@ -0,0 +1,60 @@
+# 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
+
+from cryptography.hazmat.bindings.utils import (
+    build_ffi_for_binding, load_library_for_binding,
+)
+
+
+class Binding(object):
+    """
+    CommonCrypto API wrapper.
+    """
+    _module_prefix = "cryptography.hazmat.bindings.commoncrypto."
+    _modules = [
+        "cf",
+        "common_digest",
+        "common_hmac",
+        "common_key_derivation",
+        "common_cryptor",
+        "secimport",
+        "secitem",
+        "seckey",
+        "seckeychain",
+        "sectransform",
+    ]
+
+    ffi = build_ffi_for_binding(
+        module_prefix=_module_prefix,
+        modules=_modules,
+        extra_link_args=[
+            "-framework", "Security", "-framework", "CoreFoundation"
+        ],
+    )
+    lib = None
+
+    def __init__(self):
+        self._ensure_ffi_initialized()
+
+    @classmethod
+    def _ensure_ffi_initialized(cls):
+        if cls.lib is not None:
+            return
+
+        cls.lib = load_library_for_binding(
+            cls.ffi,
+            module_prefix=cls._module_prefix,
+            modules=cls._modules,
+        )