112 lines
4.0 KiB
Python
112 lines
4.0 KiB
Python
###############################################################################
|
|
#
|
|
# The MIT License (MIT)
|
|
#
|
|
# Copyright (c) Crossbar.io Technologies GmbH
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
# of this software and associated documentation files (the "Software"), to deal
|
|
# in the Software without restriction, including without limitation the rights
|
|
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
# copies of the Software, and to permit persons to whom the Software is
|
|
# furnished to do so, subject to the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be included in
|
|
# all copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
# THE SOFTWARE.
|
|
#
|
|
###############################################################################
|
|
|
|
import os
|
|
import sys
|
|
import unittest
|
|
|
|
import uuid
|
|
import random
|
|
from nacl import utils, public
|
|
|
|
from autobahn import util
|
|
|
|
|
|
@unittest.skipIf(not ('AUTOBAHN_CI_ENABLE_RNG_DEPLETION_TESTS' in os.environ and os.environ['AUTOBAHN_CI_ENABLE_RNG_DEPLETION_TESTS']), 'entropy depletion tests not enabled (env var AUTOBAHN_CI_ENABLE_RNG_DEPLETION_TESTS not set)')
|
|
@unittest.skipIf(not sys.platform.startswith('linux'), 'entropy depletion tests only available on Linux')
|
|
class TestEntropy(unittest.TestCase):
|
|
|
|
def test_non_depleting(self):
|
|
res = {}
|
|
|
|
with open('/dev/urandom', 'rb') as rng:
|
|
for i in range(1000):
|
|
for j in range(100):
|
|
|
|
# "reseed" (seems pointless, but ..)
|
|
random.seed()
|
|
|
|
# random UUIDs
|
|
v1 = uuid.uuid4() # noqa
|
|
|
|
# stdlib random
|
|
v2 = random.random() # noqa
|
|
v3 = random.getrandbits(32) # noqa
|
|
v4 = random.randint(0, 9007199254740992) # noqa
|
|
v5 = random.normalvariate(10, 100) # noqa
|
|
v6 = random.choice(range(100)) # noqa
|
|
|
|
# PyNaCl
|
|
v7 = utils.random(public.Box.NONCE_SIZE) # noqa
|
|
|
|
# Autobahn utils
|
|
v8 = util.generate_token(4, 4) # noqa
|
|
v9 = util.id() # noqa
|
|
v10 = util.rid() # noqa
|
|
v11 = util.newid() # noqa
|
|
|
|
# direct procfs access to PRNG
|
|
d = rng.read(1000) # noqa
|
|
|
|
# check available entropy
|
|
with open('/proc/sys/kernel/random/entropy_avail', 'r') as ent:
|
|
ea = int(ent.read()) // 100
|
|
if ea not in res:
|
|
res[ea] = 0
|
|
res[ea] += 1
|
|
|
|
skeys = sorted(res.keys())
|
|
|
|
print('\nsystem entropy depletion stats:')
|
|
for k in skeys:
|
|
print('{}: {}'.format(k, res[k]))
|
|
|
|
self.assertTrue(skeys[0] > 0)
|
|
|
|
def test_depleting(self):
|
|
res = {}
|
|
|
|
with open('/dev/random', 'rb') as rng:
|
|
for i in range(10000):
|
|
|
|
# direct procfs access to "real" RNG
|
|
d = rng.read(1000) # noqa
|
|
|
|
# check available entropy
|
|
with open('/proc/sys/kernel/random/entropy_avail', 'r') as ent:
|
|
ea = int(ent.read()) // 100
|
|
if ea not in res:
|
|
res[ea] = 0
|
|
res[ea] += 1
|
|
|
|
skeys = sorted(res.keys())
|
|
|
|
print('\nsystem entropy depletion stats:')
|
|
for k in skeys:
|
|
print('{}: {}'.format(k, res[k]))
|
|
|
|
self.assertTrue(skeys[0] == 0)
|