mirror of
https://github.com/PiBrewing/craftbeerpi4.git
synced 2024-11-27 01:08:12 +01:00
76 lines
2.2 KiB
Python
76 lines
2.2 KiB
Python
# This file is dual licensed under the terms of the Apache License, Version
|
|
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
|
|
# for complete details.
|
|
|
|
from __future__ import absolute_import, division, print_function
|
|
|
|
import abc
|
|
|
|
import six
|
|
|
|
from cryptography.exceptions import UnsupportedAlgorithm, _Reasons
|
|
|
|
|
|
@six.add_metaclass(abc.ABCMeta)
|
|
class X448PublicKey(object):
|
|
@classmethod
|
|
def from_public_bytes(cls, data):
|
|
from cryptography.hazmat.backends.openssl.backend import backend
|
|
|
|
if not backend.x448_supported():
|
|
raise UnsupportedAlgorithm(
|
|
"X448 is not supported by this version of OpenSSL.",
|
|
_Reasons.UNSUPPORTED_EXCHANGE_ALGORITHM,
|
|
)
|
|
|
|
return backend.x448_load_public_bytes(data)
|
|
|
|
@abc.abstractmethod
|
|
def public_bytes(self, encoding, format):
|
|
"""
|
|
The serialized bytes of the public key.
|
|
"""
|
|
|
|
|
|
@six.add_metaclass(abc.ABCMeta)
|
|
class X448PrivateKey(object):
|
|
@classmethod
|
|
def generate(cls):
|
|
from cryptography.hazmat.backends.openssl.backend import backend
|
|
|
|
if not backend.x448_supported():
|
|
raise UnsupportedAlgorithm(
|
|
"X448 is not supported by this version of OpenSSL.",
|
|
_Reasons.UNSUPPORTED_EXCHANGE_ALGORITHM,
|
|
)
|
|
return backend.x448_generate_key()
|
|
|
|
@classmethod
|
|
def from_private_bytes(cls, data):
|
|
from cryptography.hazmat.backends.openssl.backend import backend
|
|
|
|
if not backend.x448_supported():
|
|
raise UnsupportedAlgorithm(
|
|
"X448 is not supported by this version of OpenSSL.",
|
|
_Reasons.UNSUPPORTED_EXCHANGE_ALGORITHM,
|
|
)
|
|
|
|
return backend.x448_load_private_bytes(data)
|
|
|
|
@abc.abstractmethod
|
|
def public_key(self):
|
|
"""
|
|
The serialized bytes of the public key.
|
|
"""
|
|
|
|
@abc.abstractmethod
|
|
def private_bytes(self, encoding, format, encryption_algorithm):
|
|
"""
|
|
The serialized bytes of the private key.
|
|
"""
|
|
|
|
@abc.abstractmethod
|
|
def exchange(self, peer_public_key):
|
|
"""
|
|
Performs a key exchange operation using the provided peer's public key.
|
|
"""
|