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| # -*- coding: utf-8 -*- |
| # |
| # SelfTest/Random/Fortuna/test_FortunaGenerator.py: Self-test for the FortunaGenerator module |
| # |
| # ======================================================================= |
| # Copyright (C) 2008 Dwayne C. Litzenberger <dlitz@dlitz.net> |
| # |
| # 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. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # ======================================================================= |
| # |
| |
| """Self-tests for CryptoPlus.Random.Fortuna.FortunaGenerator""" |
| |
| __revision__ = "$Id$" |
| |
| from CryptoPlus.Util.python_compat import * |
| |
| import unittest |
| from binascii import b2a_hex |
| |
| class FortunaGeneratorTests(unittest.TestCase): |
| def setUp(self): |
| global FortunaGenerator |
| from CryptoPlus.Random.Fortuna import FortunaGenerator |
| |
| def test_generator(self): |
| """FortunaGenerator.AESGenerator""" |
| fg = FortunaGenerator.AESGenerator() |
| |
| # We shouldn't be able to read data until we've seeded the generator |
| self.assertRaises(Exception, fg.pseudo_random_data, 1) |
| self.assertEqual(0, fg.counter.get_value()) |
| |
| # Seed the generator, which should set the key and increment the counter. |
| fg.reseed("Hello") |
| self.assertEqual("0ea6919d4361551364242a4ba890f8f073676e82cf1a52bb880f7e496648b565", b2a_hex(fg.key)) |
| self.assertEqual(1, fg.counter.get_value()) |
| |
| # Read 2 full blocks from the generator |
| self.assertEqual("7cbe2c17684ac223d08969ee8b565616" + # counter=1 |
| "717661c0d2f4758bd6ba140bf3791abd", # counter=2 |
| b2a_hex(fg.pseudo_random_data(32))) |
| |
| # Meanwhile, the generator will have re-keyed itself and incremented its counter |
| self.assertEqual("33a1bb21987859caf2bbfc5615bef56d" + # counter=3 |
| "e6b71ff9f37112d0c193a135160862b7", # counter=4 |
| b2a_hex(fg.key)) |
| self.assertEqual(5, fg.counter.get_value()) |
| |
| # Read another 2 blocks from the generator |
| self.assertEqual("fd6648ba3086e919cee34904ef09a7ff" + # counter=5 |
| "021f77580558b8c3e9248275f23042bf", # counter=6 |
| b2a_hex(fg.pseudo_random_data(32))) |
| |
| |
| # Try to read more than 2**20 bytes using the internal function. This should fail. |
| self.assertRaises(AssertionError, fg._pseudo_random_data, 2**20+1) |
| |
| def get_tests(): |
| from CryptoPlus.SelfTest.st_common import list_test_cases |
| return list_test_cases(FortunaGeneratorTests) |
| |
| if __name__ == '__main__': |
| suite = lambda: unittest.TestSuite(get_tests()) |
| unittest.main(defaultTest='suite') |
| |
| # vim:set ts=4 sw=4 sts=4 expandtab: |