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45 lines
1.4 KiB
Python
45 lines
1.4 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2018 New Vector Ltd
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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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"""
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Injectable secrets module for Synapse.
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See https://docs.python.org/3/library/secrets.html#module-secrets for the API
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used in Python 3.6, and the API emulated in Python 2.7.
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"""
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import sys
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# secrets is available since python 3.6
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if sys.version_info[0:2] >= (3, 6):
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import secrets
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class Secrets:
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def token_bytes(self, nbytes: int = 32) -> bytes:
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return secrets.token_bytes(nbytes)
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def token_hex(self, nbytes: int = 32) -> str:
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return secrets.token_hex(nbytes)
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else:
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import binascii
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import os
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class Secrets:
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def token_bytes(self, nbytes: int = 32) -> bytes:
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return os.urandom(nbytes)
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def token_hex(self, nbytes: int = 32) -> str:
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return binascii.hexlify(self.token_bytes(nbytes)).decode("ascii")
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