1 | # Test hashlib module |
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2 | # |
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3 | # $Id$ |
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4 | # |
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5 | # Copyright (C) 2005-2010 Gregory P. Smith (greg@krypto.org) |
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6 | # Licensed to PSF under a Contributor Agreement. |
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7 | # |
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8 | |
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9 | import array |
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10 | import hashlib |
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11 | import itertools |
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12 | import sys |
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13 | try: |
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14 | import threading |
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15 | except ImportError: |
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16 | threading = None |
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17 | import unittest |
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18 | import warnings |
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19 | from binascii import unhexlify |
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20 | |
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21 | from test import test_support |
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22 | from test.test_support import _4G, precisionbigmemtest |
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23 | |
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24 | # Were we compiled --with-pydebug or with #define Py_DEBUG? |
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25 | COMPILED_WITH_PYDEBUG = hasattr(sys, 'gettotalrefcount') |
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26 | |
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27 | |
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28 | def hexstr(s): |
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29 | import string |
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30 | h = string.hexdigits |
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31 | r = '' |
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32 | for c in s: |
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33 | i = ord(c) |
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34 | r = r + h[(i >> 4) & 0xF] + h[i & 0xF] |
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35 | return r |
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36 | |
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37 | |
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38 | class HashLibTestCase(unittest.TestCase): |
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39 | supported_hash_names = ( 'md5', 'MD5', 'sha1', 'SHA1', |
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40 | 'sha224', 'SHA224', 'sha256', 'SHA256', |
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41 | 'sha384', 'SHA384', 'sha512', 'SHA512' ) |
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42 | |
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43 | _warn_on_extension_import = COMPILED_WITH_PYDEBUG |
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44 | |
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45 | def _conditional_import_module(self, module_name): |
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46 | """Import a module and return a reference to it or None on failure.""" |
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47 | try: |
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48 | exec('import '+module_name) |
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49 | except ImportError, error: |
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50 | if self._warn_on_extension_import: |
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51 | warnings.warn('Did a C extension fail to compile? %s' % error) |
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52 | return locals().get(module_name) |
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53 | |
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54 | def __init__(self, *args, **kwargs): |
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55 | algorithms = set() |
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56 | for algorithm in self.supported_hash_names: |
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57 | algorithms.add(algorithm.lower()) |
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58 | self.constructors_to_test = {} |
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59 | for algorithm in algorithms: |
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60 | self.constructors_to_test[algorithm] = set() |
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61 | |
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62 | # For each algorithm, test the direct constructor and the use |
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63 | # of hashlib.new given the algorithm name. |
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64 | for algorithm, constructors in self.constructors_to_test.items(): |
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65 | constructors.add(getattr(hashlib, algorithm)) |
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66 | def _test_algorithm_via_hashlib_new(data=None, _alg=algorithm): |
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67 | if data is None: |
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68 | return hashlib.new(_alg) |
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69 | return hashlib.new(_alg, data) |
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70 | constructors.add(_test_algorithm_via_hashlib_new) |
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71 | |
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72 | _hashlib = self._conditional_import_module('_hashlib') |
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73 | if _hashlib: |
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74 | # These two algorithms should always be present when this module |
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75 | # is compiled. If not, something was compiled wrong. |
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76 | assert hasattr(_hashlib, 'openssl_md5') |
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77 | assert hasattr(_hashlib, 'openssl_sha1') |
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78 | for algorithm, constructors in self.constructors_to_test.items(): |
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79 | constructor = getattr(_hashlib, 'openssl_'+algorithm, None) |
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80 | if constructor: |
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81 | constructors.add(constructor) |
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82 | |
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83 | _md5 = self._conditional_import_module('_md5') |
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84 | if _md5: |
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85 | self.constructors_to_test['md5'].add(_md5.new) |
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86 | _sha = self._conditional_import_module('_sha') |
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87 | if _sha: |
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88 | self.constructors_to_test['sha1'].add(_sha.new) |
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89 | _sha256 = self._conditional_import_module('_sha256') |
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90 | if _sha256: |
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91 | self.constructors_to_test['sha224'].add(_sha256.sha224) |
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92 | self.constructors_to_test['sha256'].add(_sha256.sha256) |
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93 | _sha512 = self._conditional_import_module('_sha512') |
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94 | if _sha512: |
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95 | self.constructors_to_test['sha384'].add(_sha512.sha384) |
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96 | self.constructors_to_test['sha512'].add(_sha512.sha512) |
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97 | |
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98 | super(HashLibTestCase, self).__init__(*args, **kwargs) |
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99 | |
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100 | def test_hash_array(self): |
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101 | a = array.array("b", range(10)) |
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102 | constructors = self.constructors_to_test.itervalues() |
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103 | for cons in itertools.chain.from_iterable(constructors): |
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104 | c = cons(a) |
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105 | c.hexdigest() |
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106 | |
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107 | def test_algorithms_attribute(self): |
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108 | self.assertEqual(hashlib.algorithms, |
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109 | tuple([_algo for _algo in self.supported_hash_names if |
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110 | _algo.islower()])) |
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111 | |
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112 | def test_algorithms_guaranteed(self): |
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113 | self.assertEqual(hashlib.algorithms_guaranteed, |
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114 | set(_algo for _algo in self.supported_hash_names |
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115 | if _algo.islower())) |
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116 | |
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117 | def test_algorithms_available(self): |
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118 | self.assertTrue(set(hashlib.algorithms_guaranteed). |
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119 | issubset(hashlib.algorithms_available)) |
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120 | |
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121 | def test_unknown_hash(self): |
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122 | self.assertRaises(ValueError, hashlib.new, 'spam spam spam spam spam') |
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123 | self.assertRaises(TypeError, hashlib.new, 1) |
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124 | |
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125 | def test_get_builtin_constructor(self): |
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126 | get_builtin_constructor = hashlib.__dict__[ |
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127 | '__get_builtin_constructor'] |
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128 | self.assertRaises(ValueError, get_builtin_constructor, 'test') |
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129 | try: |
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130 | import _md5 |
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131 | except ImportError: |
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132 | pass |
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133 | # This forces an ImportError for "import _md5" statements |
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134 | sys.modules['_md5'] = None |
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135 | try: |
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136 | self.assertRaises(ValueError, get_builtin_constructor, 'md5') |
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137 | finally: |
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138 | if '_md5' in locals(): |
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139 | sys.modules['_md5'] = _md5 |
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140 | else: |
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141 | del sys.modules['_md5'] |
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142 | self.assertRaises(TypeError, get_builtin_constructor, 3) |
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143 | |
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144 | def test_hexdigest(self): |
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145 | for name in self.supported_hash_names: |
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146 | h = hashlib.new(name) |
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147 | self.assertTrue(hexstr(h.digest()) == h.hexdigest()) |
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148 | |
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149 | def test_large_update(self): |
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150 | aas = 'a' * 128 |
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151 | bees = 'b' * 127 |
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152 | cees = 'c' * 126 |
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153 | abcs = aas + bees + cees |
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154 | |
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155 | for name in self.supported_hash_names: |
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156 | m1 = hashlib.new(name) |
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157 | m1.update(aas) |
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158 | m1.update(bees) |
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159 | m1.update(cees) |
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160 | |
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161 | m2 = hashlib.new(name) |
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162 | m2.update(abcs) |
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163 | self.assertEqual(m1.digest(), m2.digest(), name+' update problem.') |
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164 | |
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165 | m3 = hashlib.new(name, abcs) |
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166 | self.assertEqual(m1.digest(), m3.digest(), name+' new problem.') |
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167 | |
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168 | def check(self, name, data, digest): |
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169 | constructors = self.constructors_to_test[name] |
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170 | # 2 is for hashlib.name(...) and hashlib.new(name, ...) |
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171 | self.assertGreaterEqual(len(constructors), 2) |
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172 | for hash_object_constructor in constructors: |
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173 | computed = hash_object_constructor(data).hexdigest() |
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174 | self.assertEqual( |
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175 | computed, digest, |
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176 | "Hash algorithm %s constructed using %s returned hexdigest" |
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177 | " %r for %d byte input data that should have hashed to %r." |
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178 | % (name, hash_object_constructor, |
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179 | computed, len(data), digest)) |
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180 | |
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181 | def check_update(self, name, data, digest): |
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182 | constructors = self.constructors_to_test[name] |
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183 | # 2 is for hashlib.name(...) and hashlib.new(name, ...) |
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184 | self.assertGreaterEqual(len(constructors), 2) |
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185 | for hash_object_constructor in constructors: |
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186 | h = hash_object_constructor() |
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187 | h.update(data) |
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188 | computed = h.hexdigest() |
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189 | self.assertEqual( |
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190 | computed, digest, |
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191 | "Hash algorithm %s using %s when updated returned hexdigest" |
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192 | " %r for %d byte input data that should have hashed to %r." |
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193 | % (name, hash_object_constructor, |
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194 | computed, len(data), digest)) |
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195 | |
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196 | def check_unicode(self, algorithm_name): |
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197 | # Unicode objects are not allowed as input. |
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198 | expected = hashlib.new(algorithm_name, str(u'spam')).hexdigest() |
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199 | self.check(algorithm_name, u'spam', expected) |
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200 | |
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201 | def test_unicode(self): |
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202 | # In python 2.x unicode is auto-encoded to the system default encoding |
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203 | # when passed to hashlib functions. |
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204 | self.check_unicode('md5') |
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205 | self.check_unicode('sha1') |
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206 | self.check_unicode('sha224') |
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207 | self.check_unicode('sha256') |
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208 | self.check_unicode('sha384') |
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209 | self.check_unicode('sha512') |
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210 | |
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211 | def test_case_md5_0(self): |
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212 | self.check('md5', '', 'd41d8cd98f00b204e9800998ecf8427e') |
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213 | |
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214 | def test_case_md5_1(self): |
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215 | self.check('md5', 'abc', '900150983cd24fb0d6963f7d28e17f72') |
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216 | |
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217 | def test_case_md5_2(self): |
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218 | self.check('md5', 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789', |
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219 | 'd174ab98d277d9f5a5611c2c9f419d9f') |
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220 | |
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221 | @unittest.skipIf(sys.maxsize < _4G + 5, 'test cannot run on 32-bit systems') |
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222 | @precisionbigmemtest(size=_4G + 5, memuse=1, dry_run=False) |
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223 | def test_case_md5_huge(self, size): |
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224 | self.check('md5', 'A'*size, 'c9af2dff37468ce5dfee8f2cfc0a9c6d') |
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225 | |
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226 | @unittest.skipIf(sys.maxsize < _4G + 5, 'test cannot run on 32-bit systems') |
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227 | @precisionbigmemtest(size=_4G + 5, memuse=1, dry_run=False) |
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228 | def test_case_md5_huge_update(self, size): |
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229 | self.check_update('md5', 'A'*size, 'c9af2dff37468ce5dfee8f2cfc0a9c6d') |
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230 | |
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231 | @unittest.skipIf(sys.maxsize < _4G - 1, 'test cannot run on 32-bit systems') |
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232 | @precisionbigmemtest(size=_4G - 1, memuse=1, dry_run=False) |
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233 | def test_case_md5_uintmax(self, size): |
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234 | self.check('md5', 'A'*size, '28138d306ff1b8281f1a9067e1a1a2b3') |
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235 | |
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236 | # use the three examples from Federal Information Processing Standards |
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237 | # Publication 180-1, Secure Hash Standard, 1995 April 17 |
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238 | # http://www.itl.nist.gov/div897/pubs/fip180-1.htm |
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239 | |
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240 | def test_case_sha1_0(self): |
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241 | self.check('sha1', "", |
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242 | "da39a3ee5e6b4b0d3255bfef95601890afd80709") |
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243 | |
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244 | def test_case_sha1_1(self): |
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245 | self.check('sha1', "abc", |
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246 | "a9993e364706816aba3e25717850c26c9cd0d89d") |
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247 | |
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248 | def test_case_sha1_2(self): |
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249 | self.check('sha1', "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", |
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250 | "84983e441c3bd26ebaae4aa1f95129e5e54670f1") |
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251 | |
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252 | def test_case_sha1_3(self): |
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253 | self.check('sha1', "a" * 1000000, |
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254 | "34aa973cd4c4daa4f61eeb2bdbad27316534016f") |
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255 | |
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256 | @precisionbigmemtest(size=_4G + 5, memuse=1) |
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257 | def test_case_sha1_huge(self, size): |
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258 | if size == _4G + 5: |
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259 | try: |
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260 | self.check('sha1', 'A'*size, |
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261 | '87d745c50e6b2879ffa0fb2c930e9fbfe0dc9a5b') |
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262 | except OverflowError: |
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263 | pass # 32-bit arch |
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264 | |
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265 | @precisionbigmemtest(size=_4G + 5, memuse=1) |
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266 | def test_case_sha1_huge_update(self, size): |
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267 | if size == _4G + 5: |
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268 | try: |
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269 | self.check_update('sha1', 'A'*size, |
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270 | '87d745c50e6b2879ffa0fb2c930e9fbfe0dc9a5b') |
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271 | except OverflowError: |
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272 | pass # 32-bit arch |
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273 | |
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274 | # use the examples from Federal Information Processing Standards |
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275 | # Publication 180-2, Secure Hash Standard, 2002 August 1 |
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276 | # http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf |
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277 | |
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278 | def test_case_sha224_0(self): |
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279 | self.check('sha224', "", |
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280 | "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f") |
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281 | |
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282 | def test_case_sha224_1(self): |
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283 | self.check('sha224', "abc", |
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284 | "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7") |
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285 | |
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286 | def test_case_sha224_2(self): |
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287 | self.check('sha224', |
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288 | "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", |
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289 | "75388b16512776cc5dba5da1fd890150b0c6455cb4f58b1952522525") |
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290 | |
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291 | def test_case_sha224_3(self): |
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292 | self.check('sha224', "a" * 1000000, |
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293 | "20794655980c91d8bbb4c1ea97618a4bf03f42581948b2ee4ee7ad67") |
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294 | |
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295 | |
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296 | def test_case_sha256_0(self): |
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297 | self.check('sha256', "", |
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298 | "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855") |
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299 | |
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300 | def test_case_sha256_1(self): |
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301 | self.check('sha256', "abc", |
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302 | "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad") |
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303 | |
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304 | def test_case_sha256_2(self): |
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305 | self.check('sha256', |
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306 | "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", |
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307 | "248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1") |
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308 | |
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309 | def test_case_sha256_3(self): |
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310 | self.check('sha256', "a" * 1000000, |
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311 | "cdc76e5c9914fb9281a1c7e284d73e67f1809a48a497200e046d39ccc7112cd0") |
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312 | |
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313 | |
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314 | def test_case_sha384_0(self): |
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315 | self.check('sha384', "", |
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316 | "38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da"+ |
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317 | "274edebfe76f65fbd51ad2f14898b95b") |
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318 | |
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319 | def test_case_sha384_1(self): |
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320 | self.check('sha384', "abc", |
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321 | "cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed"+ |
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322 | "8086072ba1e7cc2358baeca134c825a7") |
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323 | |
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324 | def test_case_sha384_2(self): |
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325 | self.check('sha384', |
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326 | "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+ |
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327 | "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", |
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328 | "09330c33f71147e83d192fc782cd1b4753111b173b3b05d22fa08086e3b0f712"+ |
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329 | "fcc7c71a557e2db966c3e9fa91746039") |
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330 | |
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331 | def test_case_sha384_3(self): |
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332 | self.check('sha384', "a" * 1000000, |
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333 | "9d0e1809716474cb086e834e310a4a1ced149e9c00f248527972cec5704c2a5b"+ |
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334 | "07b8b3dc38ecc4ebae97ddd87f3d8985") |
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335 | |
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336 | |
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337 | def test_case_sha512_0(self): |
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338 | self.check('sha512', "", |
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339 | "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce"+ |
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340 | "47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e") |
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341 | |
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342 | def test_case_sha512_1(self): |
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343 | self.check('sha512', "abc", |
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344 | "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a"+ |
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345 | "2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f") |
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346 | |
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347 | def test_case_sha512_2(self): |
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348 | self.check('sha512', |
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349 | "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"+ |
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350 | "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", |
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351 | "8e959b75dae313da8cf4f72814fc143f8f7779c6eb9f7fa17299aeadb6889018"+ |
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352 | "501d289e4900f7e4331b99dec4b5433ac7d329eeb6dd26545e96e55b874be909") |
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353 | |
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354 | def test_case_sha512_3(self): |
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355 | self.check('sha512', "a" * 1000000, |
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356 | "e718483d0ce769644e2e42c7bc15b4638e1f98b13b2044285632a803afa973eb"+ |
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357 | "de0ff244877ea60a4cb0432ce577c31beb009c5c2c49aa2e4eadb217ad8cc09b") |
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358 | |
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359 | @unittest.skipUnless(threading, 'Threading required for this test.') |
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360 | @test_support.reap_threads |
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361 | def test_threaded_hashing(self): |
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362 | # Updating the same hash object from several threads at once |
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363 | # using data chunk sizes containing the same byte sequences. |
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364 | # |
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365 | # If the internal locks are working to prevent multiple |
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366 | # updates on the same object from running at once, the resulting |
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367 | # hash will be the same as doing it single threaded upfront. |
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368 | hasher = hashlib.sha1() |
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369 | num_threads = 5 |
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370 | smallest_data = 'swineflu' |
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371 | data = smallest_data*200000 |
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372 | expected_hash = hashlib.sha1(data*num_threads).hexdigest() |
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373 | |
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374 | def hash_in_chunks(chunk_size, event): |
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375 | index = 0 |
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376 | while index < len(data): |
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377 | hasher.update(data[index:index+chunk_size]) |
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378 | index += chunk_size |
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379 | event.set() |
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380 | |
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381 | events = [] |
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382 | for threadnum in xrange(num_threads): |
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383 | chunk_size = len(data) // (10**threadnum) |
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384 | assert chunk_size > 0 |
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385 | assert chunk_size % len(smallest_data) == 0 |
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386 | event = threading.Event() |
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387 | events.append(event) |
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388 | threading.Thread(target=hash_in_chunks, |
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389 | args=(chunk_size, event)).start() |
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390 | |
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391 | for event in events: |
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392 | event.wait() |
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393 | |
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394 | self.assertEqual(expected_hash, hasher.hexdigest()) |
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395 | |
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396 | |
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397 | class KDFTests(unittest.TestCase): |
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398 | pbkdf2_test_vectors = [ |
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399 | (b'password', b'salt', 1, None), |
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400 | (b'password', b'salt', 2, None), |
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401 | (b'password', b'salt', 4096, None), |
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402 | # too slow, it takes over a minute on a fast CPU. |
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403 | #(b'password', b'salt', 16777216, None), |
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404 | (b'passwordPASSWORDpassword', b'saltSALTsaltSALTsaltSALTsaltSALTsalt', |
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405 | 4096, -1), |
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406 | (b'pass\0word', b'sa\0lt', 4096, 16), |
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407 | ] |
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408 | |
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409 | pbkdf2_results = { |
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410 | "sha1": [ |
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411 | # official test vectors from RFC 6070 |
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412 | (unhexlify('0c60c80f961f0e71f3a9b524af6012062fe037a6'), None), |
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413 | (unhexlify('ea6c014dc72d6f8ccd1ed92ace1d41f0d8de8957'), None), |
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414 | (unhexlify('4b007901b765489abead49d926f721d065a429c1'), None), |
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415 | #(unhexlify('eefe3d61cd4da4e4e9945b3d6ba2158c2634e984'), None), |
---|
416 | (unhexlify('3d2eec4fe41c849b80c8d83662c0e44a8b291a964c' |
---|
417 | 'f2f07038'), 25), |
---|
418 | (unhexlify('56fa6aa75548099dcc37d7f03425e0c3'), None),], |
---|
419 | "sha256": [ |
---|
420 | (unhexlify('120fb6cffcf8b32c43e7225256c4f837' |
---|
421 | 'a86548c92ccc35480805987cb70be17b'), None), |
---|
422 | (unhexlify('ae4d0c95af6b46d32d0adff928f06dd0' |
---|
423 | '2a303f8ef3c251dfd6e2d85a95474c43'), None), |
---|
424 | (unhexlify('c5e478d59288c841aa530db6845c4c8d' |
---|
425 | '962893a001ce4e11a4963873aa98134a'), None), |
---|
426 | #(unhexlify('cf81c66fe8cfc04d1f31ecb65dab4089' |
---|
427 | # 'f7f179e89b3b0bcb17ad10e3ac6eba46'), None), |
---|
428 | (unhexlify('348c89dbcbd32b2f32d814b8116e84cf2b17' |
---|
429 | '347ebc1800181c4e2a1fb8dd53e1c635518c7dac47e9'), 40), |
---|
430 | (unhexlify('89b69d0516f829893c696226650a8687'), None),], |
---|
431 | "sha512": [ |
---|
432 | (unhexlify('867f70cf1ade02cff3752599a3a53dc4af34c7a669815ae5' |
---|
433 | 'd513554e1c8cf252c02d470a285a0501bad999bfe943c08f' |
---|
434 | '050235d7d68b1da55e63f73b60a57fce'), None), |
---|
435 | (unhexlify('e1d9c16aa681708a45f5c7c4e215ceb66e011a2e9f004071' |
---|
436 | '3f18aefdb866d53cf76cab2868a39b9f7840edce4fef5a82' |
---|
437 | 'be67335c77a6068e04112754f27ccf4e'), None), |
---|
438 | (unhexlify('d197b1b33db0143e018b12f3d1d1479e6cdebdcc97c5c0f8' |
---|
439 | '7f6902e072f457b5143f30602641b3d55cd335988cb36b84' |
---|
440 | '376060ecd532e039b742a239434af2d5'), None), |
---|
441 | (unhexlify('8c0511f4c6e597c6ac6315d8f0362e225f3c501495ba23b8' |
---|
442 | '68c005174dc4ee71115b59f9e60cd9532fa33e0f75aefe30' |
---|
443 | '225c583a186cd82bd4daea9724a3d3b8'), 64), |
---|
444 | (unhexlify('9d9e9c4cd21fe4be24d5b8244c759665'), None),], |
---|
445 | } |
---|
446 | |
---|
447 | def test_pbkdf2_hmac(self): |
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448 | for digest_name, results in self.pbkdf2_results.items(): |
---|
449 | for i, vector in enumerate(self.pbkdf2_test_vectors): |
---|
450 | password, salt, rounds, dklen = vector |
---|
451 | expected, overwrite_dklen = results[i] |
---|
452 | if overwrite_dklen: |
---|
453 | dklen = overwrite_dklen |
---|
454 | out = hashlib.pbkdf2_hmac( |
---|
455 | digest_name, password, salt, rounds, dklen) |
---|
456 | self.assertEqual(out, expected, |
---|
457 | (digest_name, password, salt, rounds, dklen)) |
---|
458 | |
---|
459 | |
---|
460 | def test_main(): |
---|
461 | test_support.run_unittest(HashLibTestCase, KDFTests) |
---|
462 | |
---|
463 | if __name__ == "__main__": |
---|
464 | test_main() |
---|