# 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 from enum import Enum class _Reasons(Enum): BACKEND_MISSING_INTERFACE = 0 UNSUPPORTED_HASH = 1 UNSUPPORTED_CIPHER = 2 UNSUPPORTED_PADDING = 3 UNSUPPORTED_MGF = 4 UNSUPPORTED_PUBLIC_KEY_ALGORITHM = 5 UNSUPPORTED_ELLIPTIC_CURVE = 6 UNSUPPORTED_SERIALIZATION = 7 UNSUPPORTED_X509 = 8 UNSUPPORTED_EXCHANGE_ALGORITHM = 9 UNSUPPORTED_DIFFIE_HELLMAN = 10 UNSUPPORTED_MAC = 11 class UnsupportedAlgorithm(Exception): def __init__(self, message, reason=None): super(UnsupportedAlgorithm, self).__init__(message) self._reason = reason class AlreadyFinalized(Exception): pass class AlreadyUpdated(Exception): pass class NotYetFinalized(Exception): pass class InvalidTag(Exception): pass class InvalidSignature(Exception): pass class InternalError(Exception): def __init__(self, msg, err_code): super(InternalError, self).__init__(msg) self.err_code = err_code class InvalidKey(Exception): pass