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# Copyright (c) 2016 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.
from abc import ABCMeta
from abc import abstractmethod
import six
@six.add_metaclass(ABCMeta)
class CryptographicEngine(object):
"""
The abstract base class of the cryptographic engine hierarchy.
A cryptographic engine is responsible for generating all cryptographic
objects and conducting all cryptographic operations for a KMIP server
instance.
"""
@abstractmethod
def create_symmetric_key(self, algorithm, length):
"""
Create a symmetric key.
Args:
algorithm(CryptographicAlgorithm): An enumeration specifying the
algorithm for which the created key will be compliant.
length(int): The length of the key to be created. This value must
be compliant with the constraints of the provided algorithm.
Returns:
dict: A dictionary containing the key data, with the following
key/value fields:
* value - the bytes of the key
* format - a KeyFormatType enumeration for the bytes format
"""
@abstractmethod
def create_asymmetric_key_pair(self, algorithm, length):
"""
Create an asymmetric key pair.
Args:
algorithm(CryptographicAlgorithm): An enumeration specifying the
algorithm for which the created keys will be compliant.
length(int): The length of the keys to be created. This value must
be compliant with the constraints of the provided algorithm.
Returns:
dict: A dictionary containing the public key data, with the
following key/value fields:
* value - the bytes of the key
* format - a KeyFormatType enumeration for the bytes format
dict: A dictionary containing the private key data, identical in
structure to the public key dictionary.
"""
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