.. hazmat::
.. currentmodule:: cryptography.hazmat.primitives.asymmetric.ed448
Ed448 is an elliptic curve signing algorithm using EdDSA.
>>> from cryptography.hazmat.primitives.asymmetric.ed448 import Ed448PrivateKey
>>> private_key = Ed448PrivateKey.generate()
>>> signature = private_key.sign(b"my authenticated message")
>>> public_key = private_key.public_key()
>>> # Raises InvalidSignature if verification fails
>>> public_key.verify(signature, b"my authenticated message")
.. versionadded:: 2.6
.. classmethod:: generate() Generate an Ed448 private key. :returns: :class:`Ed448PrivateKey`
.. classmethod:: from_private_bytes(data) :param data: 57 byte private key. :type data: :term:`bytes-like` :returns: :class:`Ed448PrivateKey`
.. method:: public_key() :returns: :class:`Ed448PublicKey`
.. method:: sign(data) :param bytes data: The data to sign. :returns bytes: The 114 byte signature.
.. method:: private_bytes(encoding, format, encryption_algorithm) Allows serialization of the key to bytes. Encoding ( :attr:`~cryptography.hazmat.primitives.serialization.Encoding.PEM`, :attr:`~cryptography.hazmat.primitives.serialization.Encoding.DER`, or :attr:`~cryptography.hazmat.primitives.serialization.Encoding.Raw`) and format ( :attr:`~cryptography.hazmat.primitives.serialization.PrivateFormat.PKCS8` or :attr:`~cryptography.hazmat.primitives.serialization.PrivateFormat.Raw` ) are chosen to define the exact serialization. :param encoding: A value from the :class:`~cryptography.hazmat.primitives.serialization.Encoding` enum. :param format: A value from the :class:`~cryptography.hazmat.primitives.serialization.PrivateFormat` enum. If the ``encoding`` is :attr:`~cryptography.hazmat.primitives.serialization.Encoding.Raw` then ``format`` must be :attr:`~cryptography.hazmat.primitives.serialization.PrivateFormat.Raw` , otherwise it must be :attr:`~cryptography.hazmat.primitives.serialization.PrivateFormat.PKCS8`. :param encryption_algorithm: An instance of an object conforming to the :class:`~cryptography.hazmat.primitives.serialization.KeySerializationEncryption` interface. :return bytes: Serialized key.
.. method:: private_bytes_raw() .. versionadded:: 40 Allows serialization of the key to raw bytes. This method is a convenience shortcut for calling :meth:`private_bytes` with :attr:`~cryptography.hazmat.primitives.serialization.Encoding.Raw` encoding, :attr:`~cryptography.hazmat.primitives.serialization.PrivateFormat.Raw` format, and :class:`~cryptography.hazmat.primitives.serialization.NoEncryption`. :return bytes: Raw key.
.. versionadded:: 2.6
.. classmethod:: from_public_bytes(data) :param bytes data: 57 byte public key. :returns: :class:`Ed448PublicKey`
.. method:: public_bytes(encoding, format) Allows serialization of the key to bytes. Encoding ( :attr:`~cryptography.hazmat.primitives.serialization.Encoding.PEM`, :attr:`~cryptography.hazmat.primitives.serialization.Encoding.DER`, or :attr:`~cryptography.hazmat.primitives.serialization.Encoding.Raw`) and format ( :attr:`~cryptography.hazmat.primitives.serialization.PublicFormat.SubjectPublicKeyInfo` or :attr:`~cryptography.hazmat.primitives.serialization.PublicFormat.Raw` ) are chosen to define the exact serialization. :param encoding: A value from the :class:`~cryptography.hazmat.primitives.serialization.Encoding` enum. :param format: A value from the :class:`~cryptography.hazmat.primitives.serialization.PublicFormat` enum. If the ``encoding`` is :attr:`~cryptography.hazmat.primitives.serialization.Encoding.Raw` then ``format`` must be :attr:`~cryptography.hazmat.primitives.serialization.PublicFormat.Raw` , otherwise it must be :attr:`~cryptography.hazmat.primitives.serialization.PublicFormat.SubjectPublicKeyInfo`. :returns bytes: The public key bytes.
.. method:: public_bytes_raw() .. versionadded:: 40 Allows serialization of the key to raw bytes. This method is a convenience shortcut for calling :meth:`public_bytes` with :attr:`~cryptography.hazmat.primitives.serialization.Encoding.Raw` encoding and :attr:`~cryptography.hazmat.primitives.serialization.PublicFormat.Raw` format. :return bytes: Raw key.
.. method:: verify(signature, data) :param bytes signature: The signature to verify. :param bytes data: The data to verify. :returns: None :raises cryptography.exceptions.InvalidSignature: Raised when the signature cannot be verified.