60 lines
1.7 KiB
Python
60 lines
1.7 KiB
Python
# Copyright (c) 2015 The Johns Hopkins University/Applied Physics Laboratory
|
|
# 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.
|
|
|
|
"""
|
|
Base SymmetricKey Class
|
|
|
|
This module defines the SymmetricKey class.
|
|
"""
|
|
|
|
from castellan.key_manager import key
|
|
|
|
|
|
class SymmetricKey(key.Key):
|
|
"""This class represents symmetric keys."""
|
|
|
|
def __init__(self, alg, key):
|
|
"""Create a new SymmetricKey object.
|
|
|
|
The arguments specify the algorithm for the symmetric encryption and
|
|
the bytes for the key.
|
|
"""
|
|
self.alg = alg
|
|
self.key = key
|
|
|
|
def get_algorithm(self):
|
|
"""Returns the algorithm for symmetric encryption."""
|
|
return self.alg
|
|
|
|
def get_format(self):
|
|
"""This method returns 'RAW'."""
|
|
return "RAW"
|
|
|
|
def get_encoded(self):
|
|
"""Returns the key in its encoded format."""
|
|
return self.key
|
|
|
|
def __eq__(self, other):
|
|
if isinstance(other, SymmetricKey):
|
|
return (self.alg == other.alg and
|
|
self.key == other.key)
|
|
return NotImplemented
|
|
|
|
def __ne__(self, other):
|
|
result = self.__eq__(other)
|
|
if result is NotImplemented:
|
|
return result
|
|
return not result
|