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Path: ~//usr/lib/python2.7/site-packages/passlib/tests/

File Content: `test_crypto_builtin_md4.py`

"""passlib.tests -- unittests for passlib.crypto._md4"""
#=============================================================================
# imports
#=============================================================================
from __future__ import with_statement, division
# core
from binascii import hexlify
import hashlib
# site
# pkg
# module
from passlib.utils.compat import bascii_to_str, PY3, u
from passlib.crypto.digest import lookup_hash
from passlib.tests.utils import TestCase, skipUnless
# local
__all__ = [
    "_Common_MD4_Test",
    "MD4_Builtin_Test",
    "MD4_SSL_Test",
]
#=============================================================================
# test pure-python MD4 implementation
#=============================================================================
class _Common_MD4_Test(TestCase):
    """common code for testing md4 backends"""

    vectors = [
        # input -> hex digest
        # test vectors from http://www.faqs.org/rfcs/rfc1320.html - A.5
        (b"", "31d6cfe0d16ae931b73c59d7e0c089c0"),
        (b"a", "bde52cb31de33e46245e05fbdbd6fb24"),
        (b"abc", "a448017aaf21d8525fc10ae87aa6729d"),
        (b"message digest", "d9130a8164549fe818874806e1c7014b"),
        (b"abcdefghijklmnopqrstuvwxyz", "d79e1c308aa5bbcdeea8ed63df412da9"),
        (b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", "043f8582f241db351ce627e153e7f0e4"),
        (b"12345678901234567890123456789012345678901234567890123456789012345678901234567890", "e33b4ddc9c38f2199c3e7b164fcc0536"),
    ]

    def get_md4_const(self):
        """
        get md4 constructor --
        overridden by subclasses to use alternate backends.
        """
        return lookup_hash("md4").const

    def test_attrs(self):
        """informational attributes"""
        h = self.get_md4_const()()
        self.assertEqual(h.name, "md4")
        self.assertEqual(h.digest_size, 16)
        self.assertEqual(h.block_size, 64)

    def test_md4_update(self):
        """update() method"""
        md4 = self.get_md4_const()
        h = md4(b'')
        self.assertEqual(h.hexdigest(), "31d6cfe0d16ae931b73c59d7e0c089c0")

        h.update(b'a')
        self.assertEqual(h.hexdigest(), "bde52cb31de33e46245e05fbdbd6fb24")

        h.update(b'bcdefghijklmnopqrstuvwxyz')
        self.assertEqual(h.hexdigest(), "d79e1c308aa5bbcdeea8ed63df412da9")

        if PY3:
            # reject unicode, hash should return digest of b''
            h = md4()
            self.assertRaises(TypeError, h.update, u('a'))
            self.assertEqual(h.hexdigest(), "31d6cfe0d16ae931b73c59d7e0c089c0")
        else:
            # coerce unicode to ascii, hash should return digest of b'a'
            h = md4()
            h.update(u('a'))
            self.assertEqual(h.hexdigest(), "bde52cb31de33e46245e05fbdbd6fb24")

    def test_md4_hexdigest(self):
        """hexdigest() method"""
        md4 = self.get_md4_const()
        for input, hex in self.vectors:
            out = md4(input).hexdigest()
            self.assertEqual(out, hex)

    def test_md4_digest(self):
        """digest() method"""
        md4 = self.get_md4_const()
        for input, hex in self.vectors:
            out = bascii_to_str(hexlify(md4(input).digest()))
            self.assertEqual(out, hex)

    def test_md4_copy(self):
        """copy() method"""
        md4 = self.get_md4_const()
        h = md4(b'abc')

        h2 = h.copy()
        h2.update(b'def')
        self.assertEqual(h2.hexdigest(), '804e7f1c2586e50b49ac65db5b645131')

        h.update(b'ghi')
        self.assertEqual(h.hexdigest(), 'c5225580bfe176f6deeee33dee98732c')


#------------------------------------------------------------------------
# create subclasses to test various backends
#------------------------------------------------------------------------

def has_native_md4(): # pragma: no cover -- runtime detection
    """
    check if hashlib natively supports md4.
    """
    try:
        hashlib.new("md4")
        return True
    except ValueError:
        # not supported - ssl probably missing (e.g. ironpython)
        return False


@skipUnless(has_native_md4(), "hashlib lacks ssl/md4 support")
class MD4_SSL_Test(_Common_MD4_Test):
    descriptionPrefix = "hashlib.new('md4')"

    # NOTE: we trust ssl got md4 implementation right,
    #       this is more to test our test is correct :)

    def setUp(self):
        super(MD4_SSL_Test, self).setUp()

        # make sure we're using right constructor.
        self.assertEqual(self.get_md4_const().__module__, "hashlib")


class MD4_Builtin_Test(_Common_MD4_Test):
    descriptionPrefix = "passlib.crypto._md4.md4()"

    def setUp(self):
        super(MD4_Builtin_Test, self).setUp()

        if has_native_md4():

            # Temporarily make lookup_hash() use builtin pure-python implementation,
            # by monkeypatching hashlib.new() to ensure we fall back to passlib's md4 class.
            orig = hashlib.new
            def wrapper(name, *args):
                if name == "md4":
                    raise ValueError("md4 disabled for testing")
                return orig(name, *args)
            self.patchAttr(hashlib, "new", wrapper)

            # flush cache before & after test, since we're mucking with it.
            lookup_hash.clear_cache()
            self.addCleanup(lookup_hash.clear_cache)

        # make sure we're using right constructor.
        self.assertEqual(self.get_md4_const().__module__, "passlib.crypto._md4")


#=============================================================================
# eof
#=============================================================================

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FILE FOLDER

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__init__.py	20 bytes	0644
__init__.pyc	181 bytes	0644
__init__.pyo	181 bytes	0644
__main__.py	82 bytes	0644
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test_context_deprecated.py	29282 bytes	0644
test_context_deprecated.pyc	20648 bytes	0644
test_context_deprecated.pyo	20569 bytes	0644
test_crypto_builtin_md4.py	5660 bytes	0644
test_crypto_builtin_md4.pyc	6010 bytes	0644
test_crypto_builtin_md4.pyo	6010 bytes	0644
test_crypto_des.py	8874 bytes	0644
test_crypto_des.pyc	6692 bytes	0644
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test_crypto_digest.py	18670 bytes	0644
test_crypto_digest.pyc	13552 bytes	0644
test_crypto_digest.pyo	13552 bytes	0644
test_crypto_scrypt.py	25655 bytes	0644
test_crypto_scrypt.pyc	21381 bytes	0644
test_crypto_scrypt.pyo	21302 bytes	0644
test_ext_django.py	32811 bytes	0644
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test_ext_django.pyo	21345 bytes	0644
test_ext_django_source.py	11034 bytes	0644
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test_handlers_argon2.pyo	13514 bytes	0644
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test_utils_handlers.py	32134 bytes	0644
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test_utils_handlers.pyo	29188 bytes	0644
test_utils_md4.py	1474 bytes	0644
test_utils_md4.pyc	1588 bytes	0644
test_utils_md4.pyo	1588 bytes	0644
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utils.py	138326 bytes	0644
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utils.pyo	94702 bytes	0644

File Content: test_crypto_builtin_md4.py

File Content: `test_crypto_builtin_md4.py`