390 lines
15 KiB
Python
390 lines
15 KiB
Python
# Test hashlib module
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#
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# $Id$
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#
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# Copyright (C) 2005-2010 Gregory P. Smith (greg@krypto.org)
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# Licensed to PSF under a Contributor Agreement.
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#
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import array
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import hashlib
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import itertools
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import sys
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try:
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import threading
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except ImportError:
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threading = None
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import unittest
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import warnings
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from test import test_support
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from test.test_support import _4G, precisionbigmemtest
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# Were we compiled --with-pydebug or with #define Py_DEBUG?
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COMPILED_WITH_PYDEBUG = hasattr(sys, 'gettotalrefcount')
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def hexstr(s):
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import string
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h = string.hexdigits
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r = ''
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for c in s:
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i = ord(c)
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r = r + h[(i >> 4) & 0xF] + h[i & 0xF]
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return r
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class HashLibTestCase(unittest.TestCase):
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supported_hash_names = ( 'md5', 'MD5', 'sha1', 'SHA1',
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'sha224', 'SHA224', 'sha256', 'SHA256',
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'sha384', 'SHA384', 'sha512', 'SHA512' )
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_warn_on_extension_import = COMPILED_WITH_PYDEBUG
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def _conditional_import_module(self, module_name):
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"""Import a module and return a reference to it or None on failure."""
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try:
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exec('import '+module_name)
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except ImportError, error:
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if self._warn_on_extension_import:
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warnings.warn('Did a C extension fail to compile? %s' % error)
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return locals().get(module_name)
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def __init__(self, *args, **kwargs):
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algorithms = set()
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for algorithm in self.supported_hash_names:
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algorithms.add(algorithm.lower())
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self.constructors_to_test = {}
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for algorithm in algorithms:
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self.constructors_to_test[algorithm] = set()
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# For each algorithm, test the direct constructor and the use
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# of hashlib.new given the algorithm name.
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for algorithm, constructors in self.constructors_to_test.items():
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constructors.add(getattr(hashlib, algorithm))
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def _test_algorithm_via_hashlib_new(data=None, _alg=algorithm):
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if data is None:
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return hashlib.new(_alg)
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return hashlib.new(_alg, data)
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constructors.add(_test_algorithm_via_hashlib_new)
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_hashlib = self._conditional_import_module('_hashlib')
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if _hashlib:
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# These two algorithms should always be present when this module
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# is compiled. If not, something was compiled wrong.
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assert hasattr(_hashlib, 'openssl_md5')
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assert hasattr(_hashlib, 'openssl_sha1')
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for algorithm, constructors in self.constructors_to_test.items():
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constructor = getattr(_hashlib, 'openssl_'+algorithm, None)
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if constructor:
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constructors.add(constructor)
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_md5 = self._conditional_import_module('_md5')
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if _md5:
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self.constructors_to_test['md5'].add(_md5.new)
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_sha = self._conditional_import_module('_sha')
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if _sha:
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self.constructors_to_test['sha1'].add(_sha.new)
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_sha256 = self._conditional_import_module('_sha256')
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if _sha256:
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self.constructors_to_test['sha224'].add(_sha256.sha224)
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self.constructors_to_test['sha256'].add(_sha256.sha256)
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_sha512 = self._conditional_import_module('_sha512')
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if _sha512:
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self.constructors_to_test['sha384'].add(_sha512.sha384)
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self.constructors_to_test['sha512'].add(_sha512.sha512)
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super(HashLibTestCase, self).__init__(*args, **kwargs)
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def test_hash_array(self):
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a = array.array("b", range(10))
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constructors = self.constructors_to_test.itervalues()
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for cons in itertools.chain.from_iterable(constructors):
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c = cons(a)
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c.hexdigest()
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def test_algorithms_attribute(self):
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self.assertEqual(hashlib.algorithms,
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tuple([_algo for _algo in self.supported_hash_names if
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_algo.islower()]))
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def test_unknown_hash(self):
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self.assertRaises(ValueError, hashlib.new, 'spam spam spam spam spam')
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self.assertRaises(TypeError, hashlib.new, 1)
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def test_get_builtin_constructor(self):
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get_builtin_constructor = hashlib.__dict__[
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'__get_builtin_constructor']
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self.assertRaises(ValueError, get_builtin_constructor, 'test')
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try:
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import _md5
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except ImportError:
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pass
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# This forces an ImportError for "import _md5" statements
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sys.modules['_md5'] = None
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try:
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self.assertRaises(ValueError, get_builtin_constructor, 'md5')
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finally:
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if '_md5' in locals():
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sys.modules['_md5'] = _md5
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else:
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del sys.modules['_md5']
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self.assertRaises(TypeError, get_builtin_constructor, 3)
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def test_hexdigest(self):
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for name in self.supported_hash_names:
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h = hashlib.new(name)
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self.assertTrue(hexstr(h.digest()) == h.hexdigest())
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def test_large_update(self):
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aas = 'a' * 128
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bees = 'b' * 127
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cees = 'c' * 126
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abcs = aas + bees + cees
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for name in self.supported_hash_names:
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m1 = hashlib.new(name)
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m1.update(aas)
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m1.update(bees)
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m1.update(cees)
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m2 = hashlib.new(name)
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m2.update(abcs)
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self.assertEqual(m1.digest(), m2.digest(), name+' update problem.')
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m3 = hashlib.new(name, abcs)
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self.assertEqual(m1.digest(), m3.digest(), name+' new problem.')
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def check(self, name, data, digest):
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constructors = self.constructors_to_test[name]
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# 2 is for hashlib.name(...) and hashlib.new(name, ...)
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self.assertGreaterEqual(len(constructors), 2)
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for hash_object_constructor in constructors:
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computed = hash_object_constructor(data).hexdigest()
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self.assertEqual(
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computed, digest,
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"Hash algorithm %s constructed using %s returned hexdigest"
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" %r for %d byte input data that should have hashed to %r."
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% (name, hash_object_constructor,
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computed, len(data), digest))
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def check_update(self, name, data, digest):
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constructors = self.constructors_to_test[name]
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# 2 is for hashlib.name(...) and hashlib.new(name, ...)
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self.assertGreaterEqual(len(constructors), 2)
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for hash_object_constructor in constructors:
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h = hash_object_constructor()
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h.update(data)
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computed = h.hexdigest()
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self.assertEqual(
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computed, digest,
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"Hash algorithm %s using %s when updated returned hexdigest"
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" %r for %d byte input data that should have hashed to %r."
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% (name, hash_object_constructor,
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computed, len(data), digest))
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def check_unicode(self, algorithm_name):
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# Unicode objects are not allowed as input.
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expected = hashlib.new(algorithm_name, str(u'spam')).hexdigest()
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self.check(algorithm_name, u'spam', expected)
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def test_unicode(self):
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# In python 2.x unicode is auto-encoded to the system default encoding
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# when passed to hashlib functions.
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self.check_unicode('md5')
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self.check_unicode('sha1')
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self.check_unicode('sha224')
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self.check_unicode('sha256')
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self.check_unicode('sha384')
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self.check_unicode('sha512')
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def test_case_md5_0(self):
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self.check('md5', '', 'd41d8cd98f00b204e9800998ecf8427e')
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def test_case_md5_1(self):
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self.check('md5', 'abc', '900150983cd24fb0d6963f7d28e17f72')
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def test_case_md5_2(self):
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self.check('md5', 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789',
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'd174ab98d277d9f5a5611c2c9f419d9f')
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@unittest.skipIf(sys.maxsize < _4G + 5, 'test cannot run on 32-bit systems')
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@precisionbigmemtest(size=_4G + 5, memuse=1, dry_run=False)
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def test_case_md5_huge(self, size):
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self.check('md5', 'A'*size, 'c9af2dff37468ce5dfee8f2cfc0a9c6d')
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@unittest.skipIf(sys.maxsize < _4G + 5, 'test cannot run on 32-bit systems')
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@precisionbigmemtest(size=_4G + 5, memuse=1, dry_run=False)
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def test_case_md5_huge_update(self, size):
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self.check_update('md5', 'A'*size, 'c9af2dff37468ce5dfee8f2cfc0a9c6d')
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@unittest.skipIf(sys.maxsize < _4G - 1, 'test cannot run on 32-bit systems')
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@precisionbigmemtest(size=_4G - 1, memuse=1, dry_run=False)
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def test_case_md5_uintmax(self, size):
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self.check('md5', 'A'*size, '28138d306ff1b8281f1a9067e1a1a2b3')
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# use the three examples from Federal Information Processing Standards
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# Publication 180-1, Secure Hash Standard, 1995 April 17
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# http://www.itl.nist.gov/div897/pubs/fip180-1.htm
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def test_case_sha1_0(self):
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self.check('sha1', "",
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"da39a3ee5e6b4b0d3255bfef95601890afd80709")
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def test_case_sha1_1(self):
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self.check('sha1', "abc",
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"a9993e364706816aba3e25717850c26c9cd0d89d")
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def test_case_sha1_2(self):
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self.check('sha1', "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
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"84983e441c3bd26ebaae4aa1f95129e5e54670f1")
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def test_case_sha1_3(self):
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self.check('sha1', "a" * 1000000,
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"34aa973cd4c4daa4f61eeb2bdbad27316534016f")
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@precisionbigmemtest(size=_4G + 5, memuse=1)
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def test_case_sha1_huge(self, size):
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if size == _4G + 5:
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try:
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self.check('sha1', 'A'*size,
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'87d745c50e6b2879ffa0fb2c930e9fbfe0dc9a5b')
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except OverflowError:
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pass # 32-bit arch
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@precisionbigmemtest(size=_4G + 5, memuse=1)
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def test_case_sha1_huge_update(self, size):
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if size == _4G + 5:
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try:
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self.check_update('sha1', 'A'*size,
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'87d745c50e6b2879ffa0fb2c930e9fbfe0dc9a5b')
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except OverflowError:
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pass # 32-bit arch
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# use the examples from Federal Information Processing Standards
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# Publication 180-2, Secure Hash Standard, 2002 August 1
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# http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
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def test_case_sha224_0(self):
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self.check('sha224', "",
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"d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f")
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def test_case_sha224_1(self):
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self.check('sha224', "abc",
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"23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7")
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def test_case_sha224_2(self):
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self.check('sha224',
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"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
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"75388b16512776cc5dba5da1fd890150b0c6455cb4f58b1952522525")
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def test_case_sha224_3(self):
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self.check('sha224', "a" * 1000000,
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"20794655980c91d8bbb4c1ea97618a4bf03f42581948b2ee4ee7ad67")
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def test_case_sha256_0(self):
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self.check('sha256', "",
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"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855")
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def test_case_sha256_1(self):
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self.check('sha256', "abc",
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"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad")
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def test_case_sha256_2(self):
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self.check('sha256',
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"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
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"248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1")
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def test_case_sha256_3(self):
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self.check('sha256', "a" * 1000000,
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"cdc76e5c9914fb9281a1c7e284d73e67f1809a48a497200e046d39ccc7112cd0")
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def test_case_sha384_0(self):
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self.check('sha384', "",
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"38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da"+
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"274edebfe76f65fbd51ad2f14898b95b")
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def test_case_sha384_1(self):
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self.check('sha384', "abc",
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"cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed"+
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"8086072ba1e7cc2358baeca134c825a7")
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def test_case_sha384_2(self):
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self.check('sha384',
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"abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+
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"hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
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"09330c33f71147e83d192fc782cd1b4753111b173b3b05d22fa08086e3b0f712"+
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"fcc7c71a557e2db966c3e9fa91746039")
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def test_case_sha384_3(self):
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self.check('sha384', "a" * 1000000,
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"9d0e1809716474cb086e834e310a4a1ced149e9c00f248527972cec5704c2a5b"+
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"07b8b3dc38ecc4ebae97ddd87f3d8985")
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def test_case_sha512_0(self):
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self.check('sha512', "",
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"cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce"+
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"47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e")
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def test_case_sha512_1(self):
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self.check('sha512', "abc",
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"ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a"+
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"2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f")
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def test_case_sha512_2(self):
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self.check('sha512',
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"abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+
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"hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
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"8e959b75dae313da8cf4f72814fc143f8f7779c6eb9f7fa17299aeadb6889018"+
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"501d289e4900f7e4331b99dec4b5433ac7d329eeb6dd26545e96e55b874be909")
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def test_case_sha512_3(self):
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self.check('sha512', "a" * 1000000,
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"e718483d0ce769644e2e42c7bc15b4638e1f98b13b2044285632a803afa973eb"+
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"de0ff244877ea60a4cb0432ce577c31beb009c5c2c49aa2e4eadb217ad8cc09b")
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@unittest.skipUnless(threading, 'Threading required for this test.')
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@test_support.reap_threads
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def test_threaded_hashing(self):
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# Updating the same hash object from several threads at once
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# using data chunk sizes containing the same byte sequences.
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#
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# If the internal locks are working to prevent multiple
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# updates on the same object from running at once, the resulting
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# hash will be the same as doing it single threaded upfront.
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hasher = hashlib.sha1()
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num_threads = 5
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smallest_data = 'swineflu'
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data = smallest_data*200000
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expected_hash = hashlib.sha1(data*num_threads).hexdigest()
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def hash_in_chunks(chunk_size, event):
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index = 0
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while index < len(data):
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hasher.update(data[index:index+chunk_size])
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index += chunk_size
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event.set()
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events = []
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for threadnum in xrange(num_threads):
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chunk_size = len(data) // (10**threadnum)
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assert chunk_size > 0
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assert chunk_size % len(smallest_data) == 0
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event = threading.Event()
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events.append(event)
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threading.Thread(target=hash_in_chunks,
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args=(chunk_size, event)).start()
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for event in events:
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event.wait()
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self.assertEqual(expected_hash, hasher.hexdigest())
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def test_main():
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test_support.run_unittest(HashLibTestCase)
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if __name__ == "__main__":
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test_main()
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