Added Apache 2 license notice to source files

1 files changed, 17 insertions, 0 deletions

diff --git a/rsa/common.py b/rsa/common.py
index 7c852b6..573c427 100644
--- a/rsa/common.py
+++ b/rsa/common.py
@@ -1,5 +1,22 @@
+# -*- coding: utf-8 -*-
+#
+#  Copyright 2011 Sybren A. Stüvel <sybren@stuvel.eu>
+#
+#  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.
+
 '''Common functionality shared by several modules.'''
 
+
 import math
 
 def bit_size(number):