| # 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 |
| |
| |
| @six.add_metaclass(abc.ABCMeta) |
| class AsymmetricSignatureContext(object): |
| @abc.abstractmethod |
| def update(self, data): |
| """ |
| Processes the provided bytes and returns nothing. |
| """ |
| |
| @abc.abstractmethod |
| def finalize(self): |
| """ |
| Returns the signature as bytes. |
| """ |
| |
| |
| @six.add_metaclass(abc.ABCMeta) |
| class AsymmetricVerificationContext(object): |
| @abc.abstractmethod |
| def update(self, data): |
| """ |
| Processes the provided bytes and returns nothing. |
| """ |
| |
| @abc.abstractmethod |
| def verify(self): |
| """ |
| Raises an exception if the bytes provided to update do not match the |
| signature or the signature does not match the public key. |
| """ |