Add google-endpoints to third_party/.

third_party/google-endpoints/google/api/control/signing.py

Index: third_party/google-endpoints/google/api/control/signing.py
diff --git a/third_party/google-endpoints/google/api/control/signing.py b/third_party/google-endpoints/google/api/control/signing.py
new file mode 100644
index 0000000000000000000000000000000000000000..90f32228b68599defeabea16f97736775fd84a53
--- /dev/null
+++ b/third_party/google-endpoints/google/api/control/signing.py
@@ -0,0 +1,31 @@
+# Copyright 2016 Google Inc. All Rights Reserved.
+#
+# 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.
+
+"""Provides support for creating signatures using secure hashes."""
+
+from __future__ import absolute_import
+
+
+def add_dict_to_hash(a_hash, a_dict):
+    """Adds `a_dict` to `a_hash`
+
+    Args:
+       a_hash (`Hash`): the secure hash, e.g created by hashlib.md5
+       a_dict (dict[string, [string]]): the dictionary to add to the hash
+
+    """
+    if a_dict is None:
+        return
+    for k, v in a_dict.items():
+        a_hash.update('\x00' + k + '\x00' + v)