synapse-product/synapse/secrets.py
Krombel 254e8267e2 Only import secrets when available
secrets got introduced in python 3.6 so this class is not available
in 3.5 and before.

This now checks for the current running version and only tries using
secrets if the version is 3.6 or above

Signed-Off-By: Matthias Kesler <krombel@krombel.de>
2018-07-30 23:59:02 +02:00

42 lines
1.2 KiB
Python

# -*- 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
def Secrets():
return secrets
else:
import os
import binascii
class Secrets(object):
def token_bytes(self, nbytes=32):
return os.urandom(nbytes)
def token_hex(self, nbytes=32):
return binascii.hexlify(self.token_bytes(nbytes))