Add licensing information

1 files changed, 25 insertions, 2 deletions

diff --git a/otp2289/__init__.py b/otp2289/__init__.py
index 82c1413..44c39bb 100644
--- a/otp2289/__init__.py
+++ b/otp2289/__init__.py
@@ -1,6 +1,29 @@
 # -*- coding: utf-8 -*-
+# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+#
+# Copyright (c) 2020, Simeon Simeonov
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 """A pure Python implementation of RFC-2289"""
-
 from .generator import (OTP_ALGO_MD5,
                         OTP_ALGO_SHA1,
                         OTPChallengeException,
@@ -10,7 +33,7 @@ from .generator import (OTP_ALGO_MD5,
 
 __author__ = 'Simeon Simeonov'
 __version__ = '1.0.0'
-__license__ = 'GPL3'
+__license__ = 'BSD-2'
 
 
 def int_or_str(value):