94 lines
3.4 KiB
Python
94 lines
3.4 KiB
Python
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#
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# SelfTest/Util/test_strxor.py: Self-test for XORing
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#
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# ===================================================================
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#
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# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# ===================================================================
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import unittest
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from binascii import unhexlify, hexlify
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from Crypto.Util.py3compat import *
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from Crypto.SelfTest.st_common import list_test_cases
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from Crypto.Util.strxor import strxor, strxor_c
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class StrxorTests(unittest.TestCase):
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def test1(self):
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term1 = unhexlify(b("ff339a83e5cd4cdf5649"))
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term2 = unhexlify(b("383d4ba020573314395b"))
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result = unhexlify(b("c70ed123c59a7fcb6f12"))
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self.assertEqual(strxor(term1, term2), result)
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self.assertEqual(strxor(term2, term1), result)
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def test2(self):
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es = b("")
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self.assertEqual(strxor(es, es), es)
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def test3(self):
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term1 = unhexlify(b("ff339a83e5cd4cdf5649"))
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all_zeros = bchr(0) * len(term1)
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self.assertEqual(strxor(term1, term1), all_zeros)
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def test_wrong_length(self):
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term1 = unhexlify(b("ff339a83e5cd4cdf5649"))
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term2 = unhexlify(b("ff339a83e5cd4cdf564990"))
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self.assertRaises(ValueError, strxor, term1, term2)
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class Strxor_cTests(unittest.TestCase):
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def test1(self):
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term1 = unhexlify(b("ff339a83e5cd4cdf5649"))
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result = unhexlify(b("be72dbc2a48c0d9e1708"))
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self.assertEqual(strxor_c(term1, 65), result)
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def test2(self):
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term1 = unhexlify(b("ff339a83e5cd4cdf5649"))
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self.assertEqual(strxor_c(term1, 0), term1)
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def test3(self):
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self.assertEqual(strxor_c(b(""), 90), b(""))
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def test_wrong_range(self):
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term1 = unhexlify(b("ff339a83e5cd4cdf5649"))
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self.assertRaises(ValueError, strxor_c, term1, -1)
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self.assertRaises(ValueError, strxor_c, term1, 256)
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def get_tests(config={}):
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tests = []
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tests += list_test_cases(StrxorTests)
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tests += list_test_cases(Strxor_cTests)
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return tests
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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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