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- # -*- coding: utf-8 -*-
- # Copyright 2018 New Vector Ltd
- #
- # Licensed under the Apache License, Version 2.0 (the "License");
- # you may not use this file except in compliance with the License.
- # You may obtain a copy of the License at
- #
- # http://www.apache.org/licenses/LICENSE-2.0
- #
- # Unless required by applicable law or agreed to in writing, software
- # distributed under the License is distributed on an "AS IS" BASIS,
- # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- # See the License for the specific language governing permissions and
- # limitations under the License.
- """
- Injectable secrets module for Synapse.
- See https://docs.python.org/3/library/secrets.html#module-secrets for the API
- used in Python 3.6, and the API emulated in Python 2.7.
- """
- import sys
- # secrets is available since python 3.6
- if sys.version_info[0:2] >= (3, 6):
- import secrets
- class Secrets:
- def token_bytes(self, nbytes=32):
- return secrets.token_bytes(nbytes)
- def token_hex(self, nbytes=32):
- return secrets.token_hex(nbytes)
- else:
- import binascii
- import os
- class Secrets:
- def token_bytes(self, nbytes=32):
- return os.urandom(nbytes)
- def token_hex(self, nbytes=32):
- return binascii.hexlify(self.token_bytes(nbytes)).decode("ascii")
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