JezK
Edit File: 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. import abc from cryptography.exceptions import UnsupportedAlgorithm, _Reasons from cryptography.hazmat.primitives import _serialization class Ed448PublicKey(metaclass=abc.ABCMeta): @classmethod def from_public_bytes(cls, data: bytes) -> "Ed448PublicKey": 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: _serialization.Encoding, format: _serialization.PublicFormat, ) -> bytes: """ The serialized bytes of the public key. """ @abc.abstractmethod def verify(self, signature: bytes, data: bytes) -> None: """ Verify the signature. """ class Ed448PrivateKey(metaclass=abc.ABCMeta): @classmethod def generate(cls) -> "Ed448PrivateKey": 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: bytes) -> "Ed448PrivateKey": 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) -> Ed448PublicKey: """ The Ed448PublicKey derived from the private key. """ @abc.abstractmethod def sign(self, data: bytes) -> bytes: """ Signs the data. """ @abc.abstractmethod def private_bytes( self, encoding: _serialization.Encoding, format: _serialization.PrivateFormat, encryption_algorithm: _serialization.KeySerializationEncryption, ) -> bytes: """ The serialized bytes of the private key. """