/usr/share/pyshared/Crypto/SelfTest/Util/test_Counter.py is in python-crypto 2.4.1-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | # -*- coding: utf-8 -*-
#
# SelfTest/Util/test_Counter: Self-test for the Crypto.Util.Counter module
#
# Written in 2009 by Dwayne C. Litzenberger <dlitz@dlitz.net>
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# 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.
# ===================================================================
"""Self-tests for Crypto.Util.Counter"""
__revision__ = "$Id$"
import sys
if sys.version_info[0] == 2 and sys.version_info[1] == 1:
from Crypto.Util.py21compat import *
from Crypto.Util.py3compat import *
import unittest
class CounterTests(unittest.TestCase):
def setUp(self):
global Counter
from Crypto.Util import Counter
def test_BE_shortcut(self):
"""Big endian, shortcut enabled"""
c = Counter.new(128)
self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
c = Counter.new(128, little_endian=False)
self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
c = Counter.new(128, disable_shortcut=False)
self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
c = Counter.new(128, little_endian=False, disable_shortcut=False)
self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
def test_LE_shortcut(self):
"""Little endian, shortcut enabled"""
c = Counter.new(128, little_endian=True)
self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
c = Counter.new(128, little_endian=True, disable_shortcut=False)
self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
def test_BE_no_shortcut(self):
"""Big endian, shortcut disabled"""
c = Counter.new(128, disable_shortcut=True)
self.assertRaises(AttributeError, getattr, c, '__PCT_CTR_SHORTCUT__')
c = Counter.new(128, little_endian=False, disable_shortcut=True)
self.assertRaises(AttributeError, getattr, c, '__PCT_CTR_SHORTCUT__')
def test_LE_no_shortcut(self):
"""Little endian, shortcut disabled"""
c = Counter.new(128, little_endian=True, disable_shortcut=True)
self.assertRaises(AttributeError, getattr, c, '__PCT_CTR_SHORTCUT__')
def test_BE_defaults(self):
"""128-bit, Big endian, defaults"""
c = Counter.new(128)
self.assertEqual(1, c.next_value())
self.assertEqual(b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01"), c())
self.assertEqual(2, c.next_value())
self.assertEqual(b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02"), c())
for i in xrange(3, 256):
self.assertEqual(i, c.next_value())
self.assertEqual(b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00")+bchr(i), c())
self.assertEqual(256, c.next_value())
self.assertEqual(b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00"), c())
def test_LE_defaults(self):
"""128-bit, Little endian, defaults"""
c = Counter.new(128, little_endian=True)
self.assertEqual(1, c.next_value())
self.assertEqual(b("\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), c())
self.assertEqual(2, c.next_value())
self.assertEqual(b("\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), c())
for i in xrange(3, 256):
self.assertEqual(i, c.next_value())
self.assertEqual(bchr(i)+b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), c())
self.assertEqual(256, c.next_value())
self.assertEqual(b("\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), c())
def test_BE8_wraparound(self):
"""8-bit, Big endian, wraparound"""
c = Counter.new(8)
for i in xrange(1, 256):
self.assertEqual(i, c.next_value())
self.assertEqual(bchr(i), c())
self.assertRaises(OverflowError, c.next_value)
self.assertRaises(OverflowError, c)
self.assertRaises(OverflowError, c.next_value)
self.assertRaises(OverflowError, c)
def test_LE8_wraparound(self):
"""8-bit, Little endian, wraparound"""
c = Counter.new(8, little_endian=True)
for i in xrange(1, 256):
self.assertEqual(i, c.next_value())
self.assertEqual(bchr(i), c())
self.assertRaises(OverflowError, c.next_value)
self.assertRaises(OverflowError, c)
self.assertRaises(OverflowError, c.next_value)
self.assertRaises(OverflowError, c)
def test_BE8_wraparound_allowed(self):
"""8-bit, Big endian, wraparound with allow_wraparound=True"""
c = Counter.new(8, allow_wraparound=True)
for i in xrange(1, 256):
self.assertEqual(i, c.next_value())
self.assertEqual(bchr(i), c())
self.assertEqual(0, c.next_value())
self.assertEqual(b("\x00"), c())
self.assertEqual(1, c.next_value())
def test_LE8_wraparound_allowed(self):
"""8-bit, Little endian, wraparound with allow_wraparound=True"""
c = Counter.new(8, little_endian=True, allow_wraparound=True)
for i in xrange(1, 256):
self.assertEqual(i, c.next_value())
self.assertEqual(bchr(i), c())
self.assertEqual(0, c.next_value())
self.assertEqual(b("\x00"), c())
self.assertEqual(1, c.next_value())
def test_BE8_carry(self):
"""8-bit, Big endian, carry attribute"""
c = Counter.new(8)
for i in xrange(1, 256):
self.assertEqual(0, c.carry)
self.assertEqual(i, c.next_value())
self.assertEqual(bchr(i), c())
self.assertEqual(1, c.carry)
def test_LE8_carry(self):
"""8-bit, Little endian, carry attribute"""
c = Counter.new(8, little_endian=True)
for i in xrange(1, 256):
self.assertEqual(0, c.carry)
self.assertEqual(i, c.next_value())
self.assertEqual(bchr(i), c())
self.assertEqual(1, c.carry)
def get_tests(config={}):
from Crypto.SelfTest.st_common import list_test_cases
return list_test_cases(CounterTests)
if __name__ == '__main__':
suite = lambda: unittest.TestSuite(get_tests())
unittest.main(defaultTest='suite')
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