diff options
Diffstat (limited to 'lib-python/2.7/test/test_hashlib.py')
| -rw-r--r-- | lib-python/2.7/test/test_hashlib.py | 343 |
1 files changed, 343 insertions, 0 deletions
diff --git a/lib-python/2.7/test/test_hashlib.py b/lib-python/2.7/test/test_hashlib.py new file mode 100644 index 0000000000..ed41672ef0 --- /dev/null +++ b/lib-python/2.7/test/test_hashlib.py @@ -0,0 +1,343 @@ +# Test hashlib module +# +# $Id$ +# +# Copyright (C) 2005-2010 Gregory P. Smith (greg@krypto.org) +# Licensed to PSF under a Contributor Agreement. +# + +import array +import hashlib +import itertools +import sys +try: + import threading +except ImportError: + threading = None +import unittest +import warnings +from test import test_support +from test.test_support import _4G, precisionbigmemtest + +# Were we compiled --with-pydebug or with #define Py_DEBUG? +COMPILED_WITH_PYDEBUG = hasattr(sys, 'gettotalrefcount') + + +def hexstr(s): + import string + h = string.hexdigits + r = '' + for c in s: + i = ord(c) + r = r + h[(i >> 4) & 0xF] + h[i & 0xF] + return r + + +class HashLibTestCase(unittest.TestCase): + supported_hash_names = ( 'md5', 'MD5', 'sha1', 'SHA1', + 'sha224', 'SHA224', 'sha256', 'SHA256', + 'sha384', 'SHA384', 'sha512', 'SHA512' ) + + _warn_on_extension_import = COMPILED_WITH_PYDEBUG + + def _conditional_import_module(self, module_name): + """Import a module and return a reference to it or None on failure.""" + try: + exec('import '+module_name) + except ImportError, error: + if self._warn_on_extension_import: + warnings.warn('Did a C extension fail to compile? %s' % error) + return locals().get(module_name) + + def __init__(self, *args, **kwargs): + algorithms = set() + for algorithm in self.supported_hash_names: + algorithms.add(algorithm.lower()) + self.constructors_to_test = {} + for algorithm in algorithms: + self.constructors_to_test[algorithm] = set() + + # For each algorithm, test the direct constructor and the use + # of hashlib.new given the algorithm name. + for algorithm, constructors in self.constructors_to_test.items(): + constructors.add(getattr(hashlib, algorithm)) + def _test_algorithm_via_hashlib_new(data=None, _alg=algorithm): + if data is None: + return hashlib.new(_alg) + return hashlib.new(_alg, data) + constructors.add(_test_algorithm_via_hashlib_new) + + _hashlib = self._conditional_import_module('_hashlib') + if _hashlib: + # These two algorithms should always be present when this module + # is compiled. If not, something was compiled wrong. + assert hasattr(_hashlib, 'openssl_md5') + assert hasattr(_hashlib, 'openssl_sha1') + for algorithm, constructors in self.constructors_to_test.items(): + constructor = getattr(_hashlib, 'openssl_'+algorithm, None) + if constructor: + constructors.add(constructor) + + _md5 = self._conditional_import_module('_md5') + if _md5: + self.constructors_to_test['md5'].add(_md5.new) + _sha = self._conditional_import_module('_sha') + if _sha: + self.constructors_to_test['sha1'].add(_sha.new) + _sha256 = self._conditional_import_module('_sha256') + if _sha256: + self.constructors_to_test['sha224'].add(_sha256.sha224) + self.constructors_to_test['sha256'].add(_sha256.sha256) + _sha512 = self._conditional_import_module('_sha512') + if _sha512: + self.constructors_to_test['sha384'].add(_sha512.sha384) + self.constructors_to_test['sha512'].add(_sha512.sha512) + + super(HashLibTestCase, self).__init__(*args, **kwargs) + + def test_hash_array(self): + a = array.array("b", range(10)) + constructors = self.constructors_to_test.itervalues() + for cons in itertools.chain.from_iterable(constructors): + c = cons(a) + c.hexdigest() + + def test_algorithms_attribute(self): + self.assertEqual(hashlib.algorithms, + tuple([_algo for _algo in self.supported_hash_names if + _algo.islower()])) + + def test_unknown_hash(self): + try: + hashlib.new('spam spam spam spam spam') + except ValueError: + pass + else: + self.assertTrue(0 == "hashlib didn't reject bogus hash name") + + def test_hexdigest(self): + for name in self.supported_hash_names: + h = hashlib.new(name) + self.assertTrue(hexstr(h.digest()) == h.hexdigest()) + + def test_large_update(self): + aas = 'a' * 128 + bees = 'b' * 127 + cees = 'c' * 126 + abcs = aas + bees + cees + + for name in self.supported_hash_names: + m1 = hashlib.new(name) + m1.update(aas) + m1.update(bees) + m1.update(cees) + + m2 = hashlib.new(name) + m2.update(abcs) + self.assertEqual(m1.digest(), m2.digest(), name+' update problem.') + + m3 = hashlib.new(name, abcs) + self.assertEqual(m1.digest(), m3.digest(), name+' new problem.') + + def check(self, name, data, digest): + constructors = self.constructors_to_test[name] + # 2 is for hashlib.name(...) and hashlib.new(name, ...) + self.assertGreaterEqual(len(constructors), 2) + for hash_object_constructor in constructors: + computed = hash_object_constructor(data).hexdigest() + self.assertEqual( + computed, digest, + "Hash algorithm %s constructed using %s returned hexdigest" + " %r for %d byte input data that should have hashed to %r." + % (name, hash_object_constructor, + computed, len(data), digest)) + + def check_unicode(self, algorithm_name): + # Unicode objects are not allowed as input. + expected = hashlib.new(algorithm_name, str(u'spam')).hexdigest() + self.check(algorithm_name, u'spam', expected) + + def test_unicode(self): + # In python 2.x unicode is auto-encoded to the system default encoding + # when passed to hashlib functions. + self.check_unicode('md5') + self.check_unicode('sha1') + self.check_unicode('sha224') + self.check_unicode('sha256') + self.check_unicode('sha384') + self.check_unicode('sha512') + + def test_case_md5_0(self): + self.check('md5', '', 'd41d8cd98f00b204e9800998ecf8427e') + + def test_case_md5_1(self): + self.check('md5', 'abc', '900150983cd24fb0d6963f7d28e17f72') + + def test_case_md5_2(self): + self.check('md5', 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789', + 'd174ab98d277d9f5a5611c2c9f419d9f') + + @precisionbigmemtest(size=_4G + 5, memuse=1) + def test_case_md5_huge(self, size): + if size == _4G + 5: + try: + self.check('md5', 'A'*size, 'c9af2dff37468ce5dfee8f2cfc0a9c6d') + except OverflowError: + pass # 32-bit arch + + @precisionbigmemtest(size=_4G - 1, memuse=1) + def test_case_md5_uintmax(self, size): + if size == _4G - 1: + try: + self.check('md5', 'A'*size, '28138d306ff1b8281f1a9067e1a1a2b3') + except OverflowError: + pass # 32-bit arch + + # use the three examples from Federal Information Processing Standards + # Publication 180-1, Secure Hash Standard, 1995 April 17 + # http://www.itl.nist.gov/div897/pubs/fip180-1.htm + + def test_case_sha1_0(self): + self.check('sha1', "", + "da39a3ee5e6b4b0d3255bfef95601890afd80709") + + def test_case_sha1_1(self): + self.check('sha1', "abc", + "a9993e364706816aba3e25717850c26c9cd0d89d") + + def test_case_sha1_2(self): + self.check('sha1', "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", + "84983e441c3bd26ebaae4aa1f95129e5e54670f1") + + def test_case_sha1_3(self): + self.check('sha1', "a" * 1000000, + "34aa973cd4c4daa4f61eeb2bdbad27316534016f") + + + # use the examples from Federal Information Processing Standards + # Publication 180-2, Secure Hash Standard, 2002 August 1 + # http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf + + def test_case_sha224_0(self): + self.check('sha224', "", + "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f") + + def test_case_sha224_1(self): + self.check('sha224', "abc", + "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7") + + def test_case_sha224_2(self): + self.check('sha224', + "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", + "75388b16512776cc5dba5da1fd890150b0c6455cb4f58b1952522525") + + def test_case_sha224_3(self): + self.check('sha224', "a" * 1000000, + "20794655980c91d8bbb4c1ea97618a4bf03f42581948b2ee4ee7ad67") + + + def test_case_sha256_0(self): + self.check('sha256', "", + "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855") + + def test_case_sha256_1(self): + self.check('sha256', "abc", + "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad") + + def test_case_sha256_2(self): + self.check('sha256', + "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", + "248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1") + + def test_case_sha256_3(self): + self.check('sha256', "a" * 1000000, + "cdc76e5c9914fb9281a1c7e284d73e67f1809a48a497200e046d39ccc7112cd0") + + + def test_case_sha384_0(self): + self.check('sha384', "", + "38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da"+ + "274edebfe76f65fbd51ad2f14898b95b") + + def test_case_sha384_1(self): + self.check('sha384', "abc", + "cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed"+ + "8086072ba1e7cc2358baeca134c825a7") + + def test_case_sha384_2(self): + self.check('sha384', + "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+ + "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", + "09330c33f71147e83d192fc782cd1b4753111b173b3b05d22fa08086e3b0f712"+ + "fcc7c71a557e2db966c3e9fa91746039") + + def test_case_sha384_3(self): + self.check('sha384', "a" * 1000000, + "9d0e1809716474cb086e834e310a4a1ced149e9c00f248527972cec5704c2a5b"+ + "07b8b3dc38ecc4ebae97ddd87f3d8985") + + + def test_case_sha512_0(self): + self.check('sha512', "", + "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce"+ + "47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e") + + def test_case_sha512_1(self): + self.check('sha512', "abc", + "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a"+ + "2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f") + + def test_case_sha512_2(self): + self.check('sha512', + "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+ + "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", + "8e959b75dae313da8cf4f72814fc143f8f7779c6eb9f7fa17299aeadb6889018"+ + "501d289e4900f7e4331b99dec4b5433ac7d329eeb6dd26545e96e55b874be909") + + def test_case_sha512_3(self): + self.check('sha512', "a" * 1000000, + "e718483d0ce769644e2e42c7bc15b4638e1f98b13b2044285632a803afa973eb"+ + "de0ff244877ea60a4cb0432ce577c31beb009c5c2c49aa2e4eadb217ad8cc09b") + + @unittest.skipUnless(threading, 'Threading required for this test.') + @test_support.reap_threads + def test_threaded_hashing(self): + # Updating the same hash object from several threads at once + # using data chunk sizes containing the same byte sequences. + # + # If the internal locks are working to prevent multiple + # updates on the same object from running at once, the resulting + # hash will be the same as doing it single threaded upfront. + hasher = hashlib.sha1() + num_threads = 5 + smallest_data = 'swineflu' + data = smallest_data*200000 + expected_hash = hashlib.sha1(data*num_threads).hexdigest() + + def hash_in_chunks(chunk_size, event): + index = 0 + while index < len(data): + hasher.update(data[index:index+chunk_size]) + index += chunk_size + event.set() + + events = [] + for threadnum in xrange(num_threads): + chunk_size = len(data) // (10**threadnum) + assert chunk_size > 0 + assert chunk_size % len(smallest_data) == 0 + event = threading.Event() + events.append(event) + threading.Thread(target=hash_in_chunks, + args=(chunk_size, event)).start() + + for event in events: + event.wait() + + self.assertEqual(expected_hash, hasher.hexdigest()) + +def test_main(): + test_support.run_unittest(HashLibTestCase) + +if __name__ == "__main__": + test_main() |