1 # Test hashlib module

     2 #

     3 # $Id: test_hashlib.py 66496 2008-09-18 01:22:16Z benjamin.peterson $

     4 #

     5 #  Copyright (C) 2005   Gregory P. Smith (greg@krypto.org)

     6 #  Licensed to PSF under a Contributor Agreement.

     7 #

     8 

     9 import hashlib

    10 import unittest

    11 from test import test_support

    12 from test.test_support import _4G, precisionbigmemtest

    13 

    14 def hexstr(s):

    15     import string

    16     h = string.hexdigits

    17     r = ''

    18     for c in s:

    19         i = ord(c)

    20         r = r + h[(i >> 4) & 0xF] + h[i & 0xF]

    21     return r

    22 

    23 

    24 class HashLibTestCase(unittest.TestCase):

    25     supported_hash_names = ( 'md5', 'MD5', 'sha1', 'SHA1',

    26                              'sha224', 'SHA224', 'sha256', 'SHA256',

    27                              'sha384', 'SHA384', 'sha512', 'SHA512' )

    28 

    29     def test_unknown_hash(self):

    30         try:

    31             hashlib.new('spam spam spam spam spam')

    32         except ValueError:

    33             pass

    34         else:

    35             self.assert_(0 == "hashlib didn't reject bogus hash name")

    36 

    37     def test_hexdigest(self):

    38         for name in self.supported_hash_names:

    39             h = hashlib.new(name)

    40             self.assert_(hexstr(h.digest()) == h.hexdigest())

    41 

    42 

    43     def test_large_update(self):

    44         aas = 'a' * 128

    45         bees = 'b' * 127

    46         cees = 'c' * 126

    47 

    48         for name in self.supported_hash_names:

    49             m1 = hashlib.new(name)

    50             m1.update(aas)

    51             m1.update(bees)

    52             m1.update(cees)

    53 

    54             m2 = hashlib.new(name)

    55             m2.update(aas + bees + cees)

    56             self.assertEqual(m1.digest(), m2.digest())

    57 

    58     def check(self, name, data, digest):

    59         # test the direct constructors

    60         computed = getattr(hashlib, name)(data).hexdigest()

    61         self.assert_(computed == digest)

    62         # test the general new() interface

    63         computed = hashlib.new(name, data).hexdigest()

    64         self.assert_(computed == digest)

    65 

    66 

    67     def test_case_md5_0(self):

    68         self.check('md5', '', 'd41d8cd98f00b204e9800998ecf8427e')

    69 

    70     def test_case_md5_1(self):

    71         self.check('md5', 'abc', '900150983cd24fb0d6963f7d28e17f72')

    72 

    73     def test_case_md5_2(self):

    74         self.check('md5', 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789',

    75                    'd174ab98d277d9f5a5611c2c9f419d9f')

    76 

    77     @precisionbigmemtest(size=_4G + 5, memuse=1)

    78     def test_case_md5_huge(self, size):

    79         if size == _4G + 5:

    80             try:

    81                 self.check('md5', 'A'*size, 'c9af2dff37468ce5dfee8f2cfc0a9c6d')

    82             except OverflowError:

    83                 pass # 32-bit arch

    84 

    85     @precisionbigmemtest(size=_4G - 1, memuse=1)

    86     def test_case_md5_uintmax(self, size):

    87         if size == _4G - 1:

    88             try:

    89                 self.check('md5', 'A'*size, '28138d306ff1b8281f1a9067e1a1a2b3')

    90             except OverflowError:

    91                 pass # 32-bit arch

    92 

    93     # use the three examples from Federal Information Processing Standards

    94     # Publication 180-1, Secure Hash Standard,  1995 April 17

    95     # http://www.itl.nist.gov/div897/pubs/fip180-1.htm

    96 

    97     def test_case_sha1_0(self):

    98         self.check('sha1', "",

    99                    "da39a3ee5e6b4b0d3255bfef95601890afd80709")

   100 

   101     def test_case_sha1_1(self):

   102         self.check('sha1', "abc",

   103                    "a9993e364706816aba3e25717850c26c9cd0d89d")

   104 

   105     def test_case_sha1_2(self):

   106         self.check('sha1', "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",

   107                    "84983e441c3bd26ebaae4aa1f95129e5e54670f1")

   108 

   109     def test_case_sha1_3(self):

   110         self.check('sha1', "a" * 1000000,

   111                    "34aa973cd4c4daa4f61eeb2bdbad27316534016f")

   112 

   113 

   114     # use the examples from Federal Information Processing Standards

   115     # Publication 180-2, Secure Hash Standard,  2002 August 1

   116     # http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf

   117 

   118     def test_case_sha224_0(self):

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

   120           "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f")

   121 

   122     def test_case_sha224_1(self):

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

   124           "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7")

   125 

   126     def test_case_sha224_2(self):

   127         self.check('sha224',

   128           "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",

   129           "75388b16512776cc5dba5da1fd890150b0c6455cb4f58b1952522525")

   130 

   131     def test_case_sha224_3(self):

   132         self.check('sha224', "a" * 1000000,

   133           "20794655980c91d8bbb4c1ea97618a4bf03f42581948b2ee4ee7ad67")

   134 

   135 

   136     def test_case_sha256_0(self):

   137         self.check('sha256', "",

   138           "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855")

   139 

   140     def test_case_sha256_1(self):

   141         self.check('sha256', "abc",

   142           "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad")

   143 

   144     def test_case_sha256_2(self):

   145         self.check('sha256',

   146           "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",

   147           "248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1")

   148 

   149     def test_case_sha256_3(self):

   150         self.check('sha256', "a" * 1000000,

   151           "cdc76e5c9914fb9281a1c7e284d73e67f1809a48a497200e046d39ccc7112cd0")

   152 

   153 

   154     def test_case_sha384_0(self):

   155         self.check('sha384', "",

   156           "38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da"+

   157           "274edebfe76f65fbd51ad2f14898b95b")

   158 

   159     def test_case_sha384_1(self):

   160         self.check('sha384', "abc",

   161           "cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed"+

   162           "8086072ba1e7cc2358baeca134c825a7")

   163 

   164     def test_case_sha384_2(self):

   165         self.check('sha384',

   166                    "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+

   167                    "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",

   168           "09330c33f71147e83d192fc782cd1b4753111b173b3b05d22fa08086e3b0f712"+

   169           "fcc7c71a557e2db966c3e9fa91746039")

   170 

   171     def test_case_sha384_3(self):

   172         self.check('sha384', "a" * 1000000,

   173           "9d0e1809716474cb086e834e310a4a1ced149e9c00f248527972cec5704c2a5b"+

   174           "07b8b3dc38ecc4ebae97ddd87f3d8985")

   175 

   176 

   177     def test_case_sha512_0(self):

   178         self.check('sha512', "",

   179           "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce"+

   180           "47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e")

   181 

   182     def test_case_sha512_1(self):

   183         self.check('sha512', "abc",

   184           "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a"+

   185           "2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f")

   186 

   187     def test_case_sha512_2(self):

   188         self.check('sha512',

   189                    "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+

   190                    "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",

   191           "8e959b75dae313da8cf4f72814fc143f8f7779c6eb9f7fa17299aeadb6889018"+

   192           "501d289e4900f7e4331b99dec4b5433ac7d329eeb6dd26545e96e55b874be909")

   193 

   194     def test_case_sha512_3(self):

   195         self.check('sha512', "a" * 1000000,

   196           "e718483d0ce769644e2e42c7bc15b4638e1f98b13b2044285632a803afa973eb"+

   197           "de0ff244877ea60a4cb0432ce577c31beb009c5c2c49aa2e4eadb217ad8cc09b")

   198 

   199 

   200 def test_main():

   201     test_support.run_unittest(HashLibTestCase)

   202 

   203 

   204 if __name__ == "__main__":

   205     test_main()