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68 lines
1.7 KiB
Python
68 lines
1.7 KiB
Python
5 years ago
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# Copyright 2013 Donald Stufft and individual contributors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import absolute_import, division, print_function
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import os
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import six
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class EncryptedMessage(bytes):
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"""
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A bytes subclass that holds a messaged that has been encrypted by a
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:class:`SecretBox`.
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"""
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@classmethod
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def _from_parts(cls, nonce, ciphertext, combined):
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obj = cls(combined)
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obj._nonce = nonce
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obj._ciphertext = ciphertext
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return obj
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@property
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def nonce(self):
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"""
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The nonce used during the encryption of the :class:`EncryptedMessage`.
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"""
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return self._nonce
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@property
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def ciphertext(self):
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"""
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The ciphertext contained within the :class:`EncryptedMessage`.
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"""
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return self._ciphertext
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class StringFixer(object):
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def __str__(self):
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if six.PY3:
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return str(self.__bytes__())
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else:
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return self.__bytes__()
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def bytes_as_string(bytes_in):
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if six.PY3:
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return bytes_in.decode('ascii')
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else:
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return bytes_in
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def random(size=32):
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return os.urandom(size)
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