/usr/lib/python2.7/dist-packages/cryptography/hazmat/primitives/mac.py is in python-cryptography 2.1.4-1ubuntu1.1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | # 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 MACContext(object):
@abc.abstractmethod
def update(self, data):
"""
Processes the provided bytes.
"""
@abc.abstractmethod
def finalize(self):
"""
Returns the message authentication code as bytes.
"""
@abc.abstractmethod
def copy(self):
"""
Return a MACContext that is a copy of the current context.
"""
@abc.abstractmethod
def verify(self, signature):
"""
Checks if the generated message authentication code matches the
signature.
"""
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