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File Content: `ed448.py`

# 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 Ed448PublicKey(object):
    @classmethod
    def from_public_bytes(cls, data):
        from cryptography.hazmat.backends.openssl.backend import backend
        if not backend.ed448_supported():
            raise UnsupportedAlgorithm(
                "ed448 is not supported by this version of OpenSSL.",
                _Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM
            )

        return backend.ed448_load_public_bytes(data)

    @abc.abstractmethod
    def public_bytes(self, encoding, format):
        """
        The serialized bytes of the public key.
        """

    @abc.abstractmethod
    def verify(self, signature, data):
        """
        Verify the signature.
        """


@six.add_metaclass(abc.ABCMeta)
class Ed448PrivateKey(object):
    @classmethod
    def generate(cls):
        from cryptography.hazmat.backends.openssl.backend import backend
        if not backend.ed448_supported():
            raise UnsupportedAlgorithm(
                "ed448 is not supported by this version of OpenSSL.",
                _Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM
            )
        return backend.ed448_generate_key()

    @classmethod
    def from_private_bytes(cls, data):
        from cryptography.hazmat.backends.openssl.backend import backend
        if not backend.ed448_supported():
            raise UnsupportedAlgorithm(
                "ed448 is not supported by this version of OpenSSL.",
                _Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM
            )

        return backend.ed448_load_private_bytes(data)

    @abc.abstractmethod
    def public_key(self):
        """
        The Ed448PublicKey derived from the private key.
        """

    @abc.abstractmethod
    def sign(self, data):
        """
        Signs the data.
        """

    @abc.abstractmethod
    def private_bytes(self, encoding, format, encryption_algorithm):
        """
        The serialized bytes of the private key.
        """

Name	Size	Permission
__pycache__	---	0755
__init__.py	1020 bytes	0644
dh.py	5454 bytes	0644
dsa.py	6891 bytes	0644
ec.py	13758 bytes	0644
ed25519.py	2395 bytes	0644
ed448.py	2322 bytes	0644
padding.py	2261 bytes	0644
rsa.py	10317 bytes	0644
utils.py	1184 bytes	0644
x25519.py	2281 bytes	0644
x448.py	2249 bytes	0644

Command Bosku:

File Content: ed448.py

File Content: `ed448.py`