/External.LCA_RESTRICTED/Languages/IronPython/27/Lib/test/test_hashlib.py

# Test hashlib module

#

# $Id: test_hashlib.py 80564 2010-04-27 22:59:35Z victor.stinner $

#

#  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' )



    if test_support.due_to_ironpython_bug("http://ironpython.codeplex.com/workitem/16870"):

        supported_hash_names = list(supported_hash_names)

        supported_hash_names.remove("sha224")

        supported_hash_names.remove("SHA224")

        supported_hash_names = tuple(supported_hash_names)



    _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:

            if not test_support.due_to_ironpython_bug("http://ironpython.codeplex.com/workitem/16870"):

                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)



    @unittest.skipIf(test_support.is_cli, "http://ironpython.codeplex.com/workitem/28171")

    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):

        if test_support.due_to_ironpython_bug("http://ironpython.codeplex.com/workitem/16870"):

            self.assertEqual(set(hashlib.algorithms),

                set([_algo for _algo in self.supported_hash_names if

                                                    _algo.islower()] +

                    ['sha224']))

        else:

            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')

        if not test_support.due_to_ironpython_bug("http://ironpython.codeplex.com/workitem/16870"):

            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



    @unittest.skipIf(test_support.is_cli, "http://ironpython.codeplex.com/workitem/16870")

    def test_case_sha224_0(self):

        self.check('sha224', "",

          "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f")



    @unittest.skipIf(test_support.is_cli, "http://ironpython.codeplex.com/workitem/16870")

    def test_case_sha224_1(self):

        self.check('sha224', "abc",

          "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7")



    @unittest.skipIf(test_support.is_cli, "http://ironpython.codeplex.com/workitem/16870")

    def test_case_sha224_2(self):

        self.check('sha224',

          "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",

          "75388b16512776cc5dba5da1fd890150b0c6455cb4f58b1952522525")



    @unittest.skipIf(test_support.is_cli, "http://ironpython.codeplex.com/workitem/16870")

    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.skipIf(sys.platform == 'cli', 'Deadlock on IronPython')

    @unittest.skipUnless(threading, 'Threading required for this test.')

    @unittest.skipIf(test_support.is_cli, "hangs on CLR: http://ironpython.codeplex.com/workitem/28171")

    @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()