95 lines
3.5 KiB
Python
95 lines
3.5 KiB
Python
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# -*- coding: utf-8 -*-
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#
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# SelfTest/Hash/test_SHA256.py: Self-test for the SHA-256 hash function
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#
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# Written in 2008 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-test suite for Crypto.Hash.SHA256"""
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import unittest
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from Crypto.Util.py3compat import *
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class LargeSHA256Test(unittest.TestCase):
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def runTest(self):
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"""SHA256: 512/520 MiB test"""
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from Crypto.Hash import SHA256
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zeros = bchr(0x00) * (1024*1024)
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h = SHA256.new(zeros)
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for i in range(511):
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h.update(zeros)
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# This test vector is from PyCrypto's old testdata.py file.
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self.assertEqual('9acca8e8c22201155389f65abbf6bc9723edc7384ead80503839f49dcc56d767', h.hexdigest()) # 512 MiB
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for i in range(8):
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h.update(zeros)
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# This test vector is from PyCrypto's old testdata.py file.
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self.assertEqual('abf51ad954b246009dfe5a50ecd582fd5b8f1b8b27f30393853c3ef721e7fa6e', h.hexdigest()) # 520 MiB
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def get_tests(config={}):
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# Test vectors from FIPS PUB 180-2
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# This is a list of (expected_result, input[, description]) tuples.
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test_data = [
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# FIPS PUB 180-2, B.1 - "One-Block Message"
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('ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad',
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'abc'),
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# FIPS PUB 180-2, B.2 - "Multi-Block Message"
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('248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1',
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'abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq'),
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# FIPS PUB 180-2, B.3 - "Long Message"
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('cdc76e5c9914fb9281a1c7e284d73e67f1809a48a497200e046d39ccc7112cd0',
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'a' * 10**6,
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'"a" * 10**6'),
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# Test for an old PyCrypto bug.
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('f7fd017a3c721ce7ff03f3552c0813adcc48b7f33f07e5e2ba71e23ea393d103',
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'This message is precisely 55 bytes long, to test a bug.',
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'Length = 55 (mod 64)'),
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# Example from http://de.wikipedia.org/wiki/Secure_Hash_Algorithm
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('e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855', ''),
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('d32b568cd1b96d459e7291ebf4b25d007f275c9f13149beeb782fac0716613f8',
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'Franz jagt im komplett verwahrlosten Taxi quer durch Bayern'),
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]
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from Crypto.Hash import SHA256
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from .common import make_hash_tests
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tests = make_hash_tests(SHA256, "SHA256", test_data,
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digest_size=32,
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oid="2.16.840.1.101.3.4.2.1")
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if config.get('slow_tests'):
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tests += [LargeSHA256Test()]
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return tests
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if __name__ == '__main__':
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import unittest
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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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