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https://github.com/Sneed-Group/Poodletooth-iLand
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165 lines
6.9 KiB
Python
165 lines
6.9 KiB
Python
# -*- coding: utf-8 -*-
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#
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# SelfTest/Util/test_Counter: Self-test for the Crypto.Util.Counter module
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#
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# Written in 2009 by Dwayne C. Litzenberger <dlitz@dlitz.net>
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#
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# ===================================================================
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# The contents of this file are dedicated to the public domain. To
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# the extent that dedication to the public domain is not available,
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# everyone is granted a worldwide, perpetual, royalty-free,
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# non-exclusive license to exercise all rights associated with the
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# contents of this file for any purpose whatsoever.
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# No rights are reserved.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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# ===================================================================
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"""Self-tests for Crypto.Util.Counter"""
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__revision__ = "$Id$"
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import sys
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if sys.version_info[0] == 2 and sys.version_info[1] == 1:
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from Crypto.Util.py21compat import *
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from Crypto.Util.py3compat import *
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import unittest
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class CounterTests(unittest.TestCase):
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def setUp(self):
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global Counter
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from Crypto.Util import Counter
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def test_BE_shortcut(self):
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"""Big endian, shortcut enabled"""
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c = Counter.new(128)
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self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
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c = Counter.new(128, little_endian=False)
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self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
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c = Counter.new(128, disable_shortcut=False)
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self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
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c = Counter.new(128, little_endian=False, disable_shortcut=False)
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self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
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def test_LE_shortcut(self):
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"""Little endian, shortcut enabled"""
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c = Counter.new(128, little_endian=True)
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self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
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c = Counter.new(128, little_endian=True, disable_shortcut=False)
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self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
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def test_BE_no_shortcut(self):
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"""Big endian, shortcut disabled"""
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c = Counter.new(128, disable_shortcut=True)
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self.assertRaises(AttributeError, getattr, c, '__PCT_CTR_SHORTCUT__')
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c = Counter.new(128, little_endian=False, disable_shortcut=True)
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self.assertRaises(AttributeError, getattr, c, '__PCT_CTR_SHORTCUT__')
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def test_LE_no_shortcut(self):
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"""Little endian, shortcut disabled"""
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c = Counter.new(128, little_endian=True, disable_shortcut=True)
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self.assertRaises(AttributeError, getattr, c, '__PCT_CTR_SHORTCUT__')
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def test_BE_defaults(self):
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"""128-bit, Big endian, defaults"""
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c = Counter.new(128)
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self.assertEqual(1, c.next_value())
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self.assertEqual(b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01"), c())
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self.assertEqual(2, c.next_value())
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self.assertEqual(b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02"), c())
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for i in xrange(3, 256):
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self.assertEqual(i, c.next_value())
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self.assertEqual(b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00")+bchr(i), c())
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self.assertEqual(256, c.next_value())
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self.assertEqual(b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00"), c())
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def test_LE_defaults(self):
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"""128-bit, Little endian, defaults"""
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c = Counter.new(128, little_endian=True)
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self.assertEqual(1, c.next_value())
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self.assertEqual(b("\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), c())
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self.assertEqual(2, c.next_value())
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self.assertEqual(b("\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), c())
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for i in xrange(3, 256):
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self.assertEqual(i, c.next_value())
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self.assertEqual(bchr(i)+b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), c())
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self.assertEqual(256, c.next_value())
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self.assertEqual(b("\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), c())
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def test_BE8_wraparound(self):
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"""8-bit, Big endian, wraparound"""
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c = Counter.new(8)
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for i in xrange(1, 256):
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self.assertEqual(i, c.next_value())
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self.assertEqual(bchr(i), c())
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self.assertRaises(OverflowError, c.next_value)
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self.assertRaises(OverflowError, c)
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self.assertRaises(OverflowError, c.next_value)
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self.assertRaises(OverflowError, c)
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def test_LE8_wraparound(self):
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"""8-bit, Little endian, wraparound"""
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c = Counter.new(8, little_endian=True)
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for i in xrange(1, 256):
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self.assertEqual(i, c.next_value())
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self.assertEqual(bchr(i), c())
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self.assertRaises(OverflowError, c.next_value)
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self.assertRaises(OverflowError, c)
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self.assertRaises(OverflowError, c.next_value)
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self.assertRaises(OverflowError, c)
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def test_BE8_wraparound_allowed(self):
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"""8-bit, Big endian, wraparound with allow_wraparound=True"""
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c = Counter.new(8, allow_wraparound=True)
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for i in xrange(1, 256):
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self.assertEqual(i, c.next_value())
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self.assertEqual(bchr(i), c())
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self.assertEqual(0, c.next_value())
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self.assertEqual(b("\x00"), c())
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self.assertEqual(1, c.next_value())
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def test_LE8_wraparound_allowed(self):
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"""8-bit, Little endian, wraparound with allow_wraparound=True"""
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c = Counter.new(8, little_endian=True, allow_wraparound=True)
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for i in xrange(1, 256):
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self.assertEqual(i, c.next_value())
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self.assertEqual(bchr(i), c())
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self.assertEqual(0, c.next_value())
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self.assertEqual(b("\x00"), c())
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self.assertEqual(1, c.next_value())
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def test_BE8_carry(self):
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"""8-bit, Big endian, carry attribute"""
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c = Counter.new(8)
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for i in xrange(1, 256):
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self.assertEqual(0, c.carry)
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self.assertEqual(i, c.next_value())
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self.assertEqual(bchr(i), c())
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self.assertEqual(1, c.carry)
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def test_LE8_carry(self):
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"""8-bit, Little endian, carry attribute"""
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c = Counter.new(8, little_endian=True)
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for i in xrange(1, 256):
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self.assertEqual(0, c.carry)
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self.assertEqual(i, c.next_value())
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self.assertEqual(bchr(i), c())
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self.assertEqual(1, c.carry)
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def get_tests(config={}):
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from Crypto.SelfTest.st_common import list_test_cases
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return list_test_cases(CounterTests)
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if __name__ == '__main__':
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suite = lambda: unittest.TestSuite(get_tests())
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unittest.main(defaultTest='suite')
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# vim:set ts=4 sw=4 sts=4 expandtab:
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