360 lines
16 KiB
Python
360 lines
16 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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from unittest import skipUnless
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from django.conf.global_settings import PASSWORD_HASHERS
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from django.contrib.auth.hashers import (
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UNUSABLE_PASSWORD_PREFIX, UNUSABLE_PASSWORD_SUFFIX_LENGTH,
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BasePasswordHasher, PBKDF2PasswordHasher, PBKDF2SHA1PasswordHasher,
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check_password, get_hasher, identify_hasher, is_password_usable,
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make_password,
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)
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from django.test import SimpleTestCase
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from django.test.utils import override_settings
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from django.utils import six
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try:
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import crypt
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except ImportError:
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crypt = None
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try:
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import bcrypt
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except ImportError:
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bcrypt = None
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class PBKDF2SingleIterationHasher(PBKDF2PasswordHasher):
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iterations = 1
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@override_settings(PASSWORD_HASHERS=PASSWORD_HASHERS)
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class TestUtilsHashPass(SimpleTestCase):
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def test_simple(self):
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encoded = make_password('lètmein')
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self.assertTrue(encoded.startswith('pbkdf2_sha256$'))
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self.assertTrue(is_password_usable(encoded))
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self.assertTrue(check_password('lètmein', encoded))
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self.assertFalse(check_password('lètmeinz', encoded))
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# Blank passwords
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blank_encoded = make_password('')
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self.assertTrue(blank_encoded.startswith('pbkdf2_sha256$'))
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self.assertTrue(is_password_usable(blank_encoded))
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self.assertTrue(check_password('', blank_encoded))
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self.assertFalse(check_password(' ', blank_encoded))
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def test_pbkdf2(self):
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encoded = make_password('lètmein', 'seasalt', 'pbkdf2_sha256')
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self.assertEqual(encoded,
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'pbkdf2_sha256$24000$seasalt$V9DfCAVoweeLwxC/L2mb+7swhzF0XYdyQMqmusZqiTc=')
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self.assertTrue(is_password_usable(encoded))
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self.assertTrue(check_password('lètmein', encoded))
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self.assertFalse(check_password('lètmeinz', encoded))
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self.assertEqual(identify_hasher(encoded).algorithm, "pbkdf2_sha256")
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# Blank passwords
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blank_encoded = make_password('', 'seasalt', 'pbkdf2_sha256')
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self.assertTrue(blank_encoded.startswith('pbkdf2_sha256$'))
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self.assertTrue(is_password_usable(blank_encoded))
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self.assertTrue(check_password('', blank_encoded))
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self.assertFalse(check_password(' ', blank_encoded))
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def test_sha1(self):
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encoded = make_password('lètmein', 'seasalt', 'sha1')
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self.assertEqual(encoded,
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'sha1$seasalt$cff36ea83f5706ce9aa7454e63e431fc726b2dc8')
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self.assertTrue(is_password_usable(encoded))
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self.assertTrue(check_password('lètmein', encoded))
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self.assertFalse(check_password('lètmeinz', encoded))
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self.assertEqual(identify_hasher(encoded).algorithm, "sha1")
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# Blank passwords
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blank_encoded = make_password('', 'seasalt', 'sha1')
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self.assertTrue(blank_encoded.startswith('sha1$'))
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self.assertTrue(is_password_usable(blank_encoded))
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self.assertTrue(check_password('', blank_encoded))
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self.assertFalse(check_password(' ', blank_encoded))
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def test_md5(self):
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encoded = make_password('lètmein', 'seasalt', 'md5')
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self.assertEqual(encoded,
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'md5$seasalt$3f86d0d3d465b7b458c231bf3555c0e3')
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self.assertTrue(is_password_usable(encoded))
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self.assertTrue(check_password('lètmein', encoded))
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self.assertFalse(check_password('lètmeinz', encoded))
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self.assertEqual(identify_hasher(encoded).algorithm, "md5")
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# Blank passwords
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blank_encoded = make_password('', 'seasalt', 'md5')
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self.assertTrue(blank_encoded.startswith('md5$'))
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self.assertTrue(is_password_usable(blank_encoded))
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self.assertTrue(check_password('', blank_encoded))
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self.assertFalse(check_password(' ', blank_encoded))
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def test_unsalted_md5(self):
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encoded = make_password('lètmein', '', 'unsalted_md5')
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self.assertEqual(encoded, '88a434c88cca4e900f7874cd98123f43')
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self.assertTrue(is_password_usable(encoded))
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self.assertTrue(check_password('lètmein', encoded))
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self.assertFalse(check_password('lètmeinz', encoded))
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self.assertEqual(identify_hasher(encoded).algorithm, "unsalted_md5")
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# Alternate unsalted syntax
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alt_encoded = "md5$$%s" % encoded
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self.assertTrue(is_password_usable(alt_encoded))
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self.assertTrue(check_password('lètmein', alt_encoded))
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self.assertFalse(check_password('lètmeinz', alt_encoded))
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# Blank passwords
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blank_encoded = make_password('', '', 'unsalted_md5')
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self.assertTrue(is_password_usable(blank_encoded))
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self.assertTrue(check_password('', blank_encoded))
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self.assertFalse(check_password(' ', blank_encoded))
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def test_unsalted_sha1(self):
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encoded = make_password('lètmein', '', 'unsalted_sha1')
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self.assertEqual(encoded, 'sha1$$6d138ca3ae545631b3abd71a4f076ce759c5700b')
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self.assertTrue(is_password_usable(encoded))
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self.assertTrue(check_password('lètmein', encoded))
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self.assertFalse(check_password('lètmeinz', encoded))
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self.assertEqual(identify_hasher(encoded).algorithm, "unsalted_sha1")
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# Raw SHA1 isn't acceptable
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alt_encoded = encoded[6:]
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self.assertFalse(check_password('lètmein', alt_encoded))
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# Blank passwords
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blank_encoded = make_password('', '', 'unsalted_sha1')
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self.assertTrue(blank_encoded.startswith('sha1$'))
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self.assertTrue(is_password_usable(blank_encoded))
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self.assertTrue(check_password('', blank_encoded))
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self.assertFalse(check_password(' ', blank_encoded))
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@skipUnless(crypt, "no crypt module to generate password.")
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def test_crypt(self):
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encoded = make_password('lètmei', 'ab', 'crypt')
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self.assertEqual(encoded, 'crypt$$ab1Hv2Lg7ltQo')
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self.assertTrue(is_password_usable(encoded))
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self.assertTrue(check_password('lètmei', encoded))
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self.assertFalse(check_password('lètmeiz', encoded))
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self.assertEqual(identify_hasher(encoded).algorithm, "crypt")
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# Blank passwords
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blank_encoded = make_password('', 'ab', 'crypt')
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self.assertTrue(blank_encoded.startswith('crypt$'))
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self.assertTrue(is_password_usable(blank_encoded))
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self.assertTrue(check_password('', blank_encoded))
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self.assertFalse(check_password(' ', blank_encoded))
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@skipUnless(bcrypt, "bcrypt not installed")
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def test_bcrypt_sha256(self):
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encoded = make_password('lètmein', hasher='bcrypt_sha256')
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self.assertTrue(is_password_usable(encoded))
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self.assertTrue(encoded.startswith('bcrypt_sha256$'))
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self.assertTrue(check_password('lètmein', encoded))
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self.assertFalse(check_password('lètmeinz', encoded))
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self.assertEqual(identify_hasher(encoded).algorithm, "bcrypt_sha256")
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# Verify that password truncation no longer works
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password = ('VSK0UYV6FFQVZ0KG88DYN9WADAADZO1CTSIVDJUNZSUML6IBX7LN7ZS3R5'
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'JGB3RGZ7VI7G7DJQ9NI8BQFSRPTG6UWTTVESA5ZPUN')
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encoded = make_password(password, hasher='bcrypt_sha256')
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self.assertTrue(check_password(password, encoded))
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self.assertFalse(check_password(password[:72], encoded))
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# Blank passwords
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blank_encoded = make_password('', hasher='bcrypt_sha256')
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self.assertTrue(blank_encoded.startswith('bcrypt_sha256$'))
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self.assertTrue(is_password_usable(blank_encoded))
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self.assertTrue(check_password('', blank_encoded))
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self.assertFalse(check_password(' ', blank_encoded))
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@skipUnless(bcrypt, "bcrypt not installed")
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def test_bcrypt(self):
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encoded = make_password('lètmein', hasher='bcrypt')
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self.assertTrue(is_password_usable(encoded))
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self.assertTrue(encoded.startswith('bcrypt$'))
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self.assertTrue(check_password('lètmein', encoded))
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self.assertFalse(check_password('lètmeinz', encoded))
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self.assertEqual(identify_hasher(encoded).algorithm, "bcrypt")
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# Blank passwords
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blank_encoded = make_password('', hasher='bcrypt')
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self.assertTrue(blank_encoded.startswith('bcrypt$'))
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self.assertTrue(is_password_usable(blank_encoded))
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self.assertTrue(check_password('', blank_encoded))
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self.assertFalse(check_password(' ', blank_encoded))
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@skipUnless(bcrypt, "bcrypt not installed")
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def test_bcrypt_upgrade(self):
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hasher = get_hasher('bcrypt')
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self.assertEqual('bcrypt', hasher.algorithm)
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self.assertNotEqual(hasher.rounds, 4)
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old_rounds = hasher.rounds
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try:
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# Generate a password with 4 rounds.
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hasher.rounds = 4
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encoded = make_password('letmein', hasher='bcrypt')
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rounds = hasher.safe_summary(encoded)['work factor']
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self.assertEqual(rounds, '04')
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state = {'upgraded': False}
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def setter(password):
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state['upgraded'] = True
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# Check that no upgrade is triggered.
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self.assertTrue(check_password('letmein', encoded, setter, 'bcrypt'))
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self.assertFalse(state['upgraded'])
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# Revert to the old rounds count and ...
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hasher.rounds = old_rounds
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# ... check if the password would get updated to the new count.
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self.assertTrue(check_password('letmein', encoded, setter, 'bcrypt'))
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self.assertTrue(state['upgraded'])
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finally:
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hasher.rounds = old_rounds
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def test_unusable(self):
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encoded = make_password(None)
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self.assertEqual(len(encoded), len(UNUSABLE_PASSWORD_PREFIX) + UNUSABLE_PASSWORD_SUFFIX_LENGTH)
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self.assertFalse(is_password_usable(encoded))
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self.assertFalse(check_password(None, encoded))
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self.assertFalse(check_password(encoded, encoded))
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self.assertFalse(check_password(UNUSABLE_PASSWORD_PREFIX, encoded))
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self.assertFalse(check_password('', encoded))
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self.assertFalse(check_password('lètmein', encoded))
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self.assertFalse(check_password('lètmeinz', encoded))
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self.assertRaises(ValueError, identify_hasher, encoded)
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# Assert that the unusable passwords actually contain a random part.
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# This might fail one day due to a hash collision.
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self.assertNotEqual(encoded, make_password(None), "Random password collision?")
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def test_unspecified_password(self):
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"""
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Makes sure specifying no plain password with a valid encoded password
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returns `False`.
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"""
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self.assertFalse(check_password(None, make_password('lètmein')))
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def test_bad_algorithm(self):
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with self.assertRaises(ValueError):
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make_password('lètmein', hasher='lolcat')
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self.assertRaises(ValueError, identify_hasher, "lolcat$salt$hash")
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def test_bad_encoded(self):
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self.assertFalse(is_password_usable('lètmein_badencoded'))
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self.assertFalse(is_password_usable(''))
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def test_low_level_pbkdf2(self):
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hasher = PBKDF2PasswordHasher()
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encoded = hasher.encode('lètmein', 'seasalt2')
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self.assertEqual(encoded,
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'pbkdf2_sha256$24000$seasalt2$TUDkfilKHVC7BkaKSZgIKhm0aTtXlmcw/5C1FeS/DPk=')
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self.assertTrue(hasher.verify('lètmein', encoded))
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def test_low_level_pbkdf2_sha1(self):
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hasher = PBKDF2SHA1PasswordHasher()
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encoded = hasher.encode('lètmein', 'seasalt2')
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self.assertEqual(encoded,
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'pbkdf2_sha1$24000$seasalt2$L37ETdd9trqrsJDwapU3P+2Edhg=')
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self.assertTrue(hasher.verify('lètmein', encoded))
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def test_upgrade(self):
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self.assertEqual('pbkdf2_sha256', get_hasher('default').algorithm)
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for algo in ('sha1', 'md5'):
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encoded = make_password('lètmein', hasher=algo)
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state = {'upgraded': False}
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def setter(password):
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state['upgraded'] = True
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self.assertTrue(check_password('lètmein', encoded, setter))
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self.assertTrue(state['upgraded'])
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def test_no_upgrade(self):
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encoded = make_password('lètmein')
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state = {'upgraded': False}
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def setter():
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state['upgraded'] = True
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self.assertFalse(check_password('WRONG', encoded, setter))
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self.assertFalse(state['upgraded'])
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def test_no_upgrade_on_incorrect_pass(self):
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self.assertEqual('pbkdf2_sha256', get_hasher('default').algorithm)
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for algo in ('sha1', 'md5'):
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encoded = make_password('lètmein', hasher=algo)
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state = {'upgraded': False}
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def setter():
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state['upgraded'] = True
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self.assertFalse(check_password('WRONG', encoded, setter))
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self.assertFalse(state['upgraded'])
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def test_pbkdf2_upgrade(self):
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hasher = get_hasher('default')
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self.assertEqual('pbkdf2_sha256', hasher.algorithm)
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self.assertNotEqual(hasher.iterations, 1)
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old_iterations = hasher.iterations
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try:
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# Generate a password with 1 iteration.
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hasher.iterations = 1
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encoded = make_password('letmein')
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algo, iterations, salt, hash = encoded.split('$', 3)
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self.assertEqual(iterations, '1')
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state = {'upgraded': False}
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def setter(password):
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state['upgraded'] = True
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# Check that no upgrade is triggered
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self.assertTrue(check_password('letmein', encoded, setter))
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self.assertFalse(state['upgraded'])
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# Revert to the old iteration count and ...
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hasher.iterations = old_iterations
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# ... check if the password would get updated to the new iteration count.
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self.assertTrue(check_password('letmein', encoded, setter))
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self.assertTrue(state['upgraded'])
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finally:
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hasher.iterations = old_iterations
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def test_pbkdf2_upgrade_new_hasher(self):
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hasher = get_hasher('default')
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self.assertEqual('pbkdf2_sha256', hasher.algorithm)
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self.assertNotEqual(hasher.iterations, 1)
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state = {'upgraded': False}
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def setter(password):
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state['upgraded'] = True
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with self.settings(PASSWORD_HASHERS=[
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'auth_tests.test_hashers.PBKDF2SingleIterationHasher']):
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encoded = make_password('letmein')
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algo, iterations, salt, hash = encoded.split('$', 3)
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self.assertEqual(iterations, '1')
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# Check that no upgrade is triggered
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self.assertTrue(check_password('letmein', encoded, setter))
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self.assertFalse(state['upgraded'])
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# Revert to the old iteration count and check if the password would get
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# updated to the new iteration count.
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with self.settings(PASSWORD_HASHERS=[
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'django.contrib.auth.hashers.PBKDF2PasswordHasher',
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'auth_tests.test_hashers.PBKDF2SingleIterationHasher']):
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self.assertTrue(check_password('letmein', encoded, setter))
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self.assertTrue(state['upgraded'])
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def test_load_library_no_algorithm(self):
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with self.assertRaises(ValueError) as e:
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BasePasswordHasher()._load_library()
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self.assertEqual("Hasher 'BasePasswordHasher' doesn't specify a "
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"library attribute", str(e.exception))
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def test_load_library_importerror(self):
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PlainHasher = type(str('PlainHasher'), (BasePasswordHasher,),
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{'algorithm': 'plain', 'library': 'plain'})
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# Python 3 adds quotes around module name
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with six.assertRaisesRegex(self, ValueError,
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"Couldn't load 'PlainHasher' algorithm library: No module named '?plain'?"):
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PlainHasher()._load_library()
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