1 files changed, 68 insertions, 0 deletions
diff --git a/src/cryptography/hazmat/bindings/openssl/ecdh.py b/src/cryptography/hazmat/bindings/openssl/ecdh.py
new file mode 100644
index 00000000..960d46fb
--- /dev/null
+++ b/src/cryptography/hazmat/bindings/openssl/ecdh.py
@@ -0,0 +1,68 @@
+# 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
+
+INCLUDES = """
+#ifndef OPENSSL_NO_ECDH
+#include <openssl/ecdh.h>
+#endif
+"""
+
+TYPES = """
+static const int Cryptography_HAS_ECDH;
+"""
+
+FUNCTIONS = """
+"""
+
+MACROS = """
+int ECDH_compute_key(void *, size_t, const EC_POINT *, EC_KEY *,
+                     void *(*)(const void *, size_t, void *, size_t *));
+
+int ECDH_get_ex_new_index(long, void *, CRYPTO_EX_new *, CRYPTO_EX_dup *,
+                          CRYPTO_EX_free *);
+
+int ECDH_set_ex_data(EC_KEY *, int, void *);
+
+void *ECDH_get_ex_data(EC_KEY *, int);
+"""
+
+CUSTOMIZATIONS = """
+#ifdef OPENSSL_NO_ECDH
+static const long Cryptography_HAS_ECDH = 0;
+
+int (*ECDH_compute_key)(void *, size_t, const EC_POINT *, EC_KEY *,
+                        void *(*)(const void *, size_t, void *,
+                        size_t *)) = NULL;
+
+int (*ECDH_get_ex_new_index)(long, void *, CRYPTO_EX_new *, CRYPTO_EX_dup *,
+                             CRYPTO_EX_free *) = NULL;
+
+int (*ECDH_set_ex_data)(EC_KEY *, int, void *) = NULL;
+
+void *(*ECDH_get_ex_data)(EC_KEY *, int) = NULL;
+
+#else
+static const long Cryptography_HAS_ECDH = 1;
+#endif
+"""
+
+CONDITIONAL_NAMES = {
+    "Cryptography_HAS_ECDH": [
+        "ECDH_compute_key",
+        "ECDH_get_ex_new_index",
+        "ECDH_set_ex_data",
+        "ECDH_get_ex_data",
+    ],
+}