27 lines
771 B
Python
27 lines
771 B
Python
# This file is dual licensed under the terms of the Apache License, Version
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# 2.0, and the BSD License. See the LICENSE file in the root of this repository
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# for complete details.
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from __future__ import absolute_import, division, print_function
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import abc
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import six
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@six.add_metaclass(abc.ABCMeta)
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class KeyDerivationFunction(object):
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@abc.abstractmethod
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def derive(self, key_material):
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"""
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Deterministically generates and returns a new key based on the existing
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key material.
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"""
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@abc.abstractmethod
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def verify(self, key_material, expected_key):
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"""
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Checks whether the key generated by the key material matches the
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expected derived key. Raises an exception if they do not match.
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"""
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