1 import binascii
2 import functools
3 import hmac
4 import hashlib
5 import unittest
6 import unittest.mock
7 import warnings
8
9 from test.support import hashlib_helper, check_disallow_instantiation
10
11 from _operator import _compare_digest as operator_compare_digest
12
13 try:
14 import _hashlib as _hashopenssl
15 from _hashlib import HMAC as C_HMAC
16 from _hashlib import hmac_new as c_hmac_new
17 from _hashlib import compare_digest as openssl_compare_digest
18 except ImportError:
19 _hashopenssl = None
20 C_HMAC = None
21 c_hmac_new = None
22 openssl_compare_digest = None
23
24 try:
25 import _sha256 as sha256_module
26 except ImportError:
27 sha256_module = None
28
29
30 def ignore_warning(func):
31 @functools.wraps(func)
32 def wrapper(*args, **kwargs):
33 with warnings.catch_warnings():
34 warnings.filterwarnings("ignore",
35 category=DeprecationWarning)
36 return func(*args, **kwargs)
37 return wrapper
38
39
40 class ESC[4;38;5;81mTestVectorsTestCase(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
41
42 def assert_hmac_internals(
43 self, h, digest, hashname, digest_size, block_size
44 ):
45 self.assertEqual(h.hexdigest().upper(), digest.upper())
46 self.assertEqual(h.digest(), binascii.unhexlify(digest))
47 self.assertEqual(h.name, f"hmac-{hashname}")
48 self.assertEqual(h.digest_size, digest_size)
49 self.assertEqual(h.block_size, block_size)
50
51 def assert_hmac(
52 self, key, data, digest, hashfunc, hashname, digest_size, block_size
53 ):
54 h = hmac.HMAC(key, data, digestmod=hashfunc)
55 self.assert_hmac_internals(
56 h, digest, hashname, digest_size, block_size
57 )
58
59 h = hmac.HMAC(key, data, digestmod=hashname)
60 self.assert_hmac_internals(
61 h, digest, hashname, digest_size, block_size
62 )
63
64 h = hmac.HMAC(key, digestmod=hashname)
65 h2 = h.copy()
66 h2.update(b"test update")
67 h.update(data)
68 self.assertEqual(h.hexdigest().upper(), digest.upper())
69
70 h = hmac.new(key, data, digestmod=hashname)
71 self.assert_hmac_internals(
72 h, digest, hashname, digest_size, block_size
73 )
74
75 h = hmac.new(key, None, digestmod=hashname)
76 h.update(data)
77 self.assertEqual(h.hexdigest().upper(), digest.upper())
78
79 h = hmac.new(key, digestmod=hashname)
80 h.update(data)
81 self.assertEqual(h.hexdigest().upper(), digest.upper())
82
83 h = hmac.new(key, data, digestmod=hashfunc)
84 self.assertEqual(h.hexdigest().upper(), digest.upper())
85
86 self.assertEqual(
87 hmac.digest(key, data, digest=hashname),
88 binascii.unhexlify(digest)
89 )
90 self.assertEqual(
91 hmac.digest(key, data, digest=hashfunc),
92 binascii.unhexlify(digest)
93 )
94
95 h = hmac.HMAC.__new__(hmac.HMAC)
96 h._init_old(key, data, digestmod=hashname)
97 self.assert_hmac_internals(
98 h, digest, hashname, digest_size, block_size
99 )
100
101 if c_hmac_new is not None:
102 h = c_hmac_new(key, data, digestmod=hashname)
103 self.assert_hmac_internals(
104 h, digest, hashname, digest_size, block_size
105 )
106
107 h = c_hmac_new(key, digestmod=hashname)
108 h2 = h.copy()
109 h2.update(b"test update")
110 h.update(data)
111 self.assertEqual(h.hexdigest().upper(), digest.upper())
112
113 func = getattr(_hashopenssl, f"openssl_{hashname}")
114 h = c_hmac_new(key, data, digestmod=func)
115 self.assert_hmac_internals(
116 h, digest, hashname, digest_size, block_size
117 )
118
119 h = hmac.HMAC.__new__(hmac.HMAC)
120 h._init_hmac(key, data, digestmod=hashname)
121 self.assert_hmac_internals(
122 h, digest, hashname, digest_size, block_size
123 )
124
125 @hashlib_helper.requires_hashdigest('md5', openssl=True)
126 def test_md5_vectors(self):
127 # Test the HMAC module against test vectors from the RFC.
128
129 def md5test(key, data, digest):
130 self.assert_hmac(
131 key, data, digest,
132 hashfunc=hashlib.md5,
133 hashname="md5",
134 digest_size=16,
135 block_size=64
136 )
137
138 md5test(b"\x0b" * 16,
139 b"Hi There",
140 "9294727A3638BB1C13F48EF8158BFC9D")
141
142 md5test(b"Jefe",
143 b"what do ya want for nothing?",
144 "750c783e6ab0b503eaa86e310a5db738")
145
146 md5test(b"\xaa" * 16,
147 b"\xdd" * 50,
148 "56be34521d144c88dbb8c733f0e8b3f6")
149
150 md5test(bytes(range(1, 26)),
151 b"\xcd" * 50,
152 "697eaf0aca3a3aea3a75164746ffaa79")
153
154 md5test(b"\x0C" * 16,
155 b"Test With Truncation",
156 "56461ef2342edc00f9bab995690efd4c")
157
158 md5test(b"\xaa" * 80,
159 b"Test Using Larger Than Block-Size Key - Hash Key First",
160 "6b1ab7fe4bd7bf8f0b62e6ce61b9d0cd")
161
162 md5test(b"\xaa" * 80,
163 (b"Test Using Larger Than Block-Size Key "
164 b"and Larger Than One Block-Size Data"),
165 "6f630fad67cda0ee1fb1f562db3aa53e")
166
167 @hashlib_helper.requires_hashdigest('sha1', openssl=True)
168 def test_sha_vectors(self):
169 def shatest(key, data, digest):
170 self.assert_hmac(
171 key, data, digest,
172 hashfunc=hashlib.sha1,
173 hashname="sha1",
174 digest_size=20,
175 block_size=64
176 )
177
178 shatest(b"\x0b" * 20,
179 b"Hi There",
180 "b617318655057264e28bc0b6fb378c8ef146be00")
181
182 shatest(b"Jefe",
183 b"what do ya want for nothing?",
184 "effcdf6ae5eb2fa2d27416d5f184df9c259a7c79")
185
186 shatest(b"\xAA" * 20,
187 b"\xDD" * 50,
188 "125d7342b9ac11cd91a39af48aa17b4f63f175d3")
189
190 shatest(bytes(range(1, 26)),
191 b"\xCD" * 50,
192 "4c9007f4026250c6bc8414f9bf50c86c2d7235da")
193
194 shatest(b"\x0C" * 20,
195 b"Test With Truncation",
196 "4c1a03424b55e07fe7f27be1d58bb9324a9a5a04")
197
198 shatest(b"\xAA" * 80,
199 b"Test Using Larger Than Block-Size Key - Hash Key First",
200 "aa4ae5e15272d00e95705637ce8a3b55ed402112")
201
202 shatest(b"\xAA" * 80,
203 (b"Test Using Larger Than Block-Size Key "
204 b"and Larger Than One Block-Size Data"),
205 "e8e99d0f45237d786d6bbaa7965c7808bbff1a91")
206
207 def _rfc4231_test_cases(self, hashfunc, hash_name, digest_size, block_size):
208 def hmactest(key, data, hexdigests):
209 digest = hexdigests[hashfunc]
210
211 self.assert_hmac(
212 key, data, digest,
213 hashfunc=hashfunc,
214 hashname=hash_name,
215 digest_size=digest_size,
216 block_size=block_size
217 )
218
219 # 4.2. Test Case 1
220 hmactest(key = b'\x0b'*20,
221 data = b'Hi There',
222 hexdigests = {
223 hashlib.sha224: '896fb1128abbdf196832107cd49df33f'
224 '47b4b1169912ba4f53684b22',
225 hashlib.sha256: 'b0344c61d8db38535ca8afceaf0bf12b'
226 '881dc200c9833da726e9376c2e32cff7',
227 hashlib.sha384: 'afd03944d84895626b0825f4ab46907f'
228 '15f9dadbe4101ec682aa034c7cebc59c'
229 'faea9ea9076ede7f4af152e8b2fa9cb6',
230 hashlib.sha512: '87aa7cdea5ef619d4ff0b4241a1d6cb0'
231 '2379f4e2ce4ec2787ad0b30545e17cde'
232 'daa833b7d6b8a702038b274eaea3f4e4'
233 'be9d914eeb61f1702e696c203a126854',
234 })
235
236 # 4.3. Test Case 2
237 hmactest(key = b'Jefe',
238 data = b'what do ya want for nothing?',
239 hexdigests = {
240 hashlib.sha224: 'a30e01098bc6dbbf45690f3a7e9e6d0f'
241 '8bbea2a39e6148008fd05e44',
242 hashlib.sha256: '5bdcc146bf60754e6a042426089575c7'
243 '5a003f089d2739839dec58b964ec3843',
244 hashlib.sha384: 'af45d2e376484031617f78d2b58a6b1b'
245 '9c7ef464f5a01b47e42ec3736322445e'
246 '8e2240ca5e69e2c78b3239ecfab21649',
247 hashlib.sha512: '164b7a7bfcf819e2e395fbe73b56e0a3'
248 '87bd64222e831fd610270cd7ea250554'
249 '9758bf75c05a994a6d034f65f8f0e6fd'
250 'caeab1a34d4a6b4b636e070a38bce737',
251 })
252
253 # 4.4. Test Case 3
254 hmactest(key = b'\xaa'*20,
255 data = b'\xdd'*50,
256 hexdigests = {
257 hashlib.sha224: '7fb3cb3588c6c1f6ffa9694d7d6ad264'
258 '9365b0c1f65d69d1ec8333ea',
259 hashlib.sha256: '773ea91e36800e46854db8ebd09181a7'
260 '2959098b3ef8c122d9635514ced565fe',
261 hashlib.sha384: '88062608d3e6ad8a0aa2ace014c8a86f'
262 '0aa635d947ac9febe83ef4e55966144b'
263 '2a5ab39dc13814b94e3ab6e101a34f27',
264 hashlib.sha512: 'fa73b0089d56a284efb0f0756c890be9'
265 'b1b5dbdd8ee81a3655f83e33b2279d39'
266 'bf3e848279a722c806b485a47e67c807'
267 'b946a337bee8942674278859e13292fb',
268 })
269
270 # 4.5. Test Case 4
271 hmactest(key = bytes(x for x in range(0x01, 0x19+1)),
272 data = b'\xcd'*50,
273 hexdigests = {
274 hashlib.sha224: '6c11506874013cac6a2abc1bb382627c'
275 'ec6a90d86efc012de7afec5a',
276 hashlib.sha256: '82558a389a443c0ea4cc819899f2083a'
277 '85f0faa3e578f8077a2e3ff46729665b',
278 hashlib.sha384: '3e8a69b7783c25851933ab6290af6ca7'
279 '7a9981480850009cc5577c6e1f573b4e'
280 '6801dd23c4a7d679ccf8a386c674cffb',
281 hashlib.sha512: 'b0ba465637458c6990e5a8c5f61d4af7'
282 'e576d97ff94b872de76f8050361ee3db'
283 'a91ca5c11aa25eb4d679275cc5788063'
284 'a5f19741120c4f2de2adebeb10a298dd',
285 })
286
287 # 4.7. Test Case 6
288 hmactest(key = b'\xaa'*131,
289 data = b'Test Using Larger Than Block-Siz'
290 b'e Key - Hash Key First',
291 hexdigests = {
292 hashlib.sha224: '95e9a0db962095adaebe9b2d6f0dbce2'
293 'd499f112f2d2b7273fa6870e',
294 hashlib.sha256: '60e431591ee0b67f0d8a26aacbf5b77f'
295 '8e0bc6213728c5140546040f0ee37f54',
296 hashlib.sha384: '4ece084485813e9088d2c63a041bc5b4'
297 '4f9ef1012a2b588f3cd11f05033ac4c6'
298 '0c2ef6ab4030fe8296248df163f44952',
299 hashlib.sha512: '80b24263c7c1a3ebb71493c1dd7be8b4'
300 '9b46d1f41b4aeec1121b013783f8f352'
301 '6b56d037e05f2598bd0fd2215d6a1e52'
302 '95e64f73f63f0aec8b915a985d786598',
303 })
304
305 # 4.8. Test Case 7
306 hmactest(key = b'\xaa'*131,
307 data = b'This is a test using a larger th'
308 b'an block-size key and a larger t'
309 b'han block-size data. The key nee'
310 b'ds to be hashed before being use'
311 b'd by the HMAC algorithm.',
312 hexdigests = {
313 hashlib.sha224: '3a854166ac5d9f023f54d517d0b39dbd'
314 '946770db9c2b95c9f6f565d1',
315 hashlib.sha256: '9b09ffa71b942fcb27635fbcd5b0e944'
316 'bfdc63644f0713938a7f51535c3a35e2',
317 hashlib.sha384: '6617178e941f020d351e2f254e8fd32c'
318 '602420feb0b8fb9adccebb82461e99c5'
319 'a678cc31e799176d3860e6110c46523e',
320 hashlib.sha512: 'e37b6a775dc87dbaa4dfa9f96e5e3ffd'
321 'debd71f8867289865df5a32d20cdc944'
322 'b6022cac3c4982b10d5eeb55c3e4de15'
323 '134676fb6de0446065c97440fa8c6a58',
324 })
325
326 @hashlib_helper.requires_hashdigest('sha224', openssl=True)
327 def test_sha224_rfc4231(self):
328 self._rfc4231_test_cases(hashlib.sha224, 'sha224', 28, 64)
329
330 @hashlib_helper.requires_hashdigest('sha256', openssl=True)
331 def test_sha256_rfc4231(self):
332 self._rfc4231_test_cases(hashlib.sha256, 'sha256', 32, 64)
333
334 @hashlib_helper.requires_hashdigest('sha384', openssl=True)
335 def test_sha384_rfc4231(self):
336 self._rfc4231_test_cases(hashlib.sha384, 'sha384', 48, 128)
337
338 @hashlib_helper.requires_hashdigest('sha512', openssl=True)
339 def test_sha512_rfc4231(self):
340 self._rfc4231_test_cases(hashlib.sha512, 'sha512', 64, 128)
341
342 @hashlib_helper.requires_hashdigest('sha256')
343 def test_legacy_block_size_warnings(self):
344 class ESC[4;38;5;81mMockCrazyHash(ESC[4;38;5;149mobject):
345 """Ain't no block_size attribute here."""
346 def __init__(self, *args):
347 self._x = hashlib.sha256(*args)
348 self.digest_size = self._x.digest_size
349 def update(self, v):
350 self._x.update(v)
351 def digest(self):
352 return self._x.digest()
353
354 with warnings.catch_warnings():
355 warnings.simplefilter('error', RuntimeWarning)
356 with self.assertRaises(RuntimeWarning):
357 hmac.HMAC(b'a', b'b', digestmod=MockCrazyHash)
358 self.fail('Expected warning about missing block_size')
359
360 MockCrazyHash.block_size = 1
361 with self.assertRaises(RuntimeWarning):
362 hmac.HMAC(b'a', b'b', digestmod=MockCrazyHash)
363 self.fail('Expected warning about small block_size')
364
365 def test_with_digestmod_no_default(self):
366 """The digestmod parameter is required as of Python 3.8."""
367 with self.assertRaisesRegex(TypeError, r'required.*digestmod'):
368 key = b"\x0b" * 16
369 data = b"Hi There"
370 hmac.HMAC(key, data, digestmod=None)
371 with self.assertRaisesRegex(TypeError, r'required.*digestmod'):
372 hmac.new(key, data)
373 with self.assertRaisesRegex(TypeError, r'required.*digestmod'):
374 hmac.HMAC(key, msg=data, digestmod='')
375
376 def test_with_fallback(self):
377 cache = getattr(hashlib, '__builtin_constructor_cache')
378 try:
379 cache['foo'] = hashlib.sha256
380 hexdigest = hmac.digest(b'key', b'message', 'foo').hex()
381 expected = '6e9ef29b75fffc5b7abae527d58fdadb2fe42e7219011976917343065f58ed4a'
382 self.assertEqual(hexdigest, expected)
383 finally:
384 cache.pop('foo')
385
386
387 class ESC[4;38;5;81mConstructorTestCase(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
388
389 expected = (
390 "6c845b47f52b3b47f6590c502db7825aad757bf4fadc8fa972f7cd2e76a5bdeb"
391 )
392
393 @hashlib_helper.requires_hashdigest('sha256')
394 def test_normal(self):
395 # Standard constructor call.
396 try:
397 hmac.HMAC(b"key", digestmod='sha256')
398 except Exception:
399 self.fail("Standard constructor call raised exception.")
400
401 @hashlib_helper.requires_hashdigest('sha256')
402 def test_with_str_key(self):
403 # Pass a key of type str, which is an error, because it expects a key
404 # of type bytes
405 with self.assertRaises(TypeError):
406 h = hmac.HMAC("key", digestmod='sha256')
407
408 @hashlib_helper.requires_hashdigest('sha256')
409 def test_dot_new_with_str_key(self):
410 # Pass a key of type str, which is an error, because it expects a key
411 # of type bytes
412 with self.assertRaises(TypeError):
413 h = hmac.new("key", digestmod='sha256')
414
415 @hashlib_helper.requires_hashdigest('sha256')
416 def test_withtext(self):
417 # Constructor call with text.
418 try:
419 h = hmac.HMAC(b"key", b"hash this!", digestmod='sha256')
420 except Exception:
421 self.fail("Constructor call with text argument raised exception.")
422 self.assertEqual(h.hexdigest(), self.expected)
423
424 @hashlib_helper.requires_hashdigest('sha256')
425 def test_with_bytearray(self):
426 try:
427 h = hmac.HMAC(bytearray(b"key"), bytearray(b"hash this!"),
428 digestmod="sha256")
429 except Exception:
430 self.fail("Constructor call with bytearray arguments raised exception.")
431 self.assertEqual(h.hexdigest(), self.expected)
432
433 @hashlib_helper.requires_hashdigest('sha256')
434 def test_with_memoryview_msg(self):
435 try:
436 h = hmac.HMAC(b"key", memoryview(b"hash this!"), digestmod="sha256")
437 except Exception:
438 self.fail("Constructor call with memoryview msg raised exception.")
439 self.assertEqual(h.hexdigest(), self.expected)
440
441 @hashlib_helper.requires_hashdigest('sha256')
442 def test_withmodule(self):
443 # Constructor call with text and digest module.
444 try:
445 h = hmac.HMAC(b"key", b"", hashlib.sha256)
446 except Exception:
447 self.fail("Constructor call with hashlib.sha256 raised exception.")
448
449 @unittest.skipUnless(C_HMAC is not None, 'need _hashlib')
450 def test_internal_types(self):
451 # internal types like _hashlib.C_HMAC are not constructable
452 check_disallow_instantiation(self, C_HMAC)
453 with self.assertRaisesRegex(TypeError, "immutable type"):
454 C_HMAC.value = None
455
456 @unittest.skipUnless(sha256_module is not None, 'need _sha256')
457 def test_with_sha256_module(self):
458 h = hmac.HMAC(b"key", b"hash this!", digestmod=sha256_module.sha256)
459 self.assertEqual(h.hexdigest(), self.expected)
460 self.assertEqual(h.name, "hmac-sha256")
461
462 digest = hmac.digest(b"key", b"hash this!", sha256_module.sha256)
463 self.assertEqual(digest, binascii.unhexlify(self.expected))
464
465
466 class ESC[4;38;5;81mSanityTestCase(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
467
468 @hashlib_helper.requires_hashdigest('sha256')
469 def test_exercise_all_methods(self):
470 # Exercising all methods once.
471 # This must not raise any exceptions
472 try:
473 h = hmac.HMAC(b"my secret key", digestmod="sha256")
474 h.update(b"compute the hash of this text!")
475 h.digest()
476 h.hexdigest()
477 h.copy()
478 except Exception:
479 self.fail("Exception raised during normal usage of HMAC class.")
480
481
482 class ESC[4;38;5;81mCopyTestCase(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
483
484 @hashlib_helper.requires_hashdigest('sha256')
485 def test_attributes_old(self):
486 # Testing if attributes are of same type.
487 h1 = hmac.HMAC.__new__(hmac.HMAC)
488 h1._init_old(b"key", b"msg", digestmod="sha256")
489 h2 = h1.copy()
490 self.assertEqual(type(h1._inner), type(h2._inner),
491 "Types of inner don't match.")
492 self.assertEqual(type(h1._outer), type(h2._outer),
493 "Types of outer don't match.")
494
495 @hashlib_helper.requires_hashdigest('sha256')
496 def test_realcopy_old(self):
497 # Testing if the copy method created a real copy.
498 h1 = hmac.HMAC.__new__(hmac.HMAC)
499 h1._init_old(b"key", b"msg", digestmod="sha256")
500 h2 = h1.copy()
501 # Using id() in case somebody has overridden __eq__/__ne__.
502 self.assertTrue(id(h1) != id(h2), "No real copy of the HMAC instance.")
503 self.assertTrue(id(h1._inner) != id(h2._inner),
504 "No real copy of the attribute 'inner'.")
505 self.assertTrue(id(h1._outer) != id(h2._outer),
506 "No real copy of the attribute 'outer'.")
507 self.assertIs(h1._hmac, None)
508
509 @unittest.skipIf(_hashopenssl is None, "test requires _hashopenssl")
510 @hashlib_helper.requires_hashdigest('sha256')
511 def test_realcopy_hmac(self):
512 h1 = hmac.HMAC.__new__(hmac.HMAC)
513 h1._init_hmac(b"key", b"msg", digestmod="sha256")
514 h2 = h1.copy()
515 self.assertTrue(id(h1._hmac) != id(h2._hmac))
516
517 @hashlib_helper.requires_hashdigest('sha256')
518 def test_equality(self):
519 # Testing if the copy has the same digests.
520 h1 = hmac.HMAC(b"key", digestmod="sha256")
521 h1.update(b"some random text")
522 h2 = h1.copy()
523 self.assertEqual(h1.digest(), h2.digest(),
524 "Digest of copy doesn't match original digest.")
525 self.assertEqual(h1.hexdigest(), h2.hexdigest(),
526 "Hexdigest of copy doesn't match original hexdigest.")
527
528 @hashlib_helper.requires_hashdigest('sha256')
529 def test_equality_new(self):
530 # Testing if the copy has the same digests with hmac.new().
531 h1 = hmac.new(b"key", digestmod="sha256")
532 h1.update(b"some random text")
533 h2 = h1.copy()
534 self.assertTrue(
535 id(h1) != id(h2), "No real copy of the HMAC instance."
536 )
537 self.assertEqual(h1.digest(), h2.digest(),
538 "Digest of copy doesn't match original digest.")
539 self.assertEqual(h1.hexdigest(), h2.hexdigest(),
540 "Hexdigest of copy doesn't match original hexdigest.")
541
542
543 class ESC[4;38;5;81mCompareDigestTestCase(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
544
545 def test_hmac_compare_digest(self):
546 self._test_compare_digest(hmac.compare_digest)
547 if openssl_compare_digest is not None:
548 self.assertIs(hmac.compare_digest, openssl_compare_digest)
549 else:
550 self.assertIs(hmac.compare_digest, operator_compare_digest)
551
552 def test_operator_compare_digest(self):
553 self._test_compare_digest(operator_compare_digest)
554
555 @unittest.skipIf(openssl_compare_digest is None, "test requires _hashlib")
556 def test_openssl_compare_digest(self):
557 self._test_compare_digest(openssl_compare_digest)
558
559 def _test_compare_digest(self, compare_digest):
560 # Testing input type exception handling
561 a, b = 100, 200
562 self.assertRaises(TypeError, compare_digest, a, b)
563 a, b = 100, b"foobar"
564 self.assertRaises(TypeError, compare_digest, a, b)
565 a, b = b"foobar", 200
566 self.assertRaises(TypeError, compare_digest, a, b)
567 a, b = "foobar", b"foobar"
568 self.assertRaises(TypeError, compare_digest, a, b)
569 a, b = b"foobar", "foobar"
570 self.assertRaises(TypeError, compare_digest, a, b)
571
572 # Testing bytes of different lengths
573 a, b = b"foobar", b"foo"
574 self.assertFalse(compare_digest(a, b))
575 a, b = b"\xde\xad\xbe\xef", b"\xde\xad"
576 self.assertFalse(compare_digest(a, b))
577
578 # Testing bytes of same lengths, different values
579 a, b = b"foobar", b"foobaz"
580 self.assertFalse(compare_digest(a, b))
581 a, b = b"\xde\xad\xbe\xef", b"\xab\xad\x1d\xea"
582 self.assertFalse(compare_digest(a, b))
583
584 # Testing bytes of same lengths, same values
585 a, b = b"foobar", b"foobar"
586 self.assertTrue(compare_digest(a, b))
587 a, b = b"\xde\xad\xbe\xef", b"\xde\xad\xbe\xef"
588 self.assertTrue(compare_digest(a, b))
589
590 # Testing bytearrays of same lengths, same values
591 a, b = bytearray(b"foobar"), bytearray(b"foobar")
592 self.assertTrue(compare_digest(a, b))
593
594 # Testing bytearrays of different lengths
595 a, b = bytearray(b"foobar"), bytearray(b"foo")
596 self.assertFalse(compare_digest(a, b))
597
598 # Testing bytearrays of same lengths, different values
599 a, b = bytearray(b"foobar"), bytearray(b"foobaz")
600 self.assertFalse(compare_digest(a, b))
601
602 # Testing byte and bytearray of same lengths, same values
603 a, b = bytearray(b"foobar"), b"foobar"
604 self.assertTrue(compare_digest(a, b))
605 self.assertTrue(compare_digest(b, a))
606
607 # Testing byte bytearray of different lengths
608 a, b = bytearray(b"foobar"), b"foo"
609 self.assertFalse(compare_digest(a, b))
610 self.assertFalse(compare_digest(b, a))
611
612 # Testing byte and bytearray of same lengths, different values
613 a, b = bytearray(b"foobar"), b"foobaz"
614 self.assertFalse(compare_digest(a, b))
615 self.assertFalse(compare_digest(b, a))
616
617 # Testing str of same lengths
618 a, b = "foobar", "foobar"
619 self.assertTrue(compare_digest(a, b))
620
621 # Testing str of different lengths
622 a, b = "foo", "foobar"
623 self.assertFalse(compare_digest(a, b))
624
625 # Testing bytes of same lengths, different values
626 a, b = "foobar", "foobaz"
627 self.assertFalse(compare_digest(a, b))
628
629 # Testing error cases
630 a, b = "foobar", b"foobar"
631 self.assertRaises(TypeError, compare_digest, a, b)
632 a, b = b"foobar", "foobar"
633 self.assertRaises(TypeError, compare_digest, a, b)
634 a, b = b"foobar", 1
635 self.assertRaises(TypeError, compare_digest, a, b)
636 a, b = 100, 200
637 self.assertRaises(TypeError, compare_digest, a, b)
638 a, b = "fooä", "fooä"
639 self.assertRaises(TypeError, compare_digest, a, b)
640
641 # subclasses are supported by ignore __eq__
642 class ESC[4;38;5;81mmystr(ESC[4;38;5;149mstr):
643 def __eq__(self, other):
644 return False
645
646 a, b = mystr("foobar"), mystr("foobar")
647 self.assertTrue(compare_digest(a, b))
648 a, b = mystr("foobar"), "foobar"
649 self.assertTrue(compare_digest(a, b))
650 a, b = mystr("foobar"), mystr("foobaz")
651 self.assertFalse(compare_digest(a, b))
652
653 class ESC[4;38;5;81mmybytes(ESC[4;38;5;149mbytes):
654 def __eq__(self, other):
655 return False
656
657 a, b = mybytes(b"foobar"), mybytes(b"foobar")
658 self.assertTrue(compare_digest(a, b))
659 a, b = mybytes(b"foobar"), b"foobar"
660 self.assertTrue(compare_digest(a, b))
661 a, b = mybytes(b"foobar"), mybytes(b"foobaz")
662 self.assertFalse(compare_digest(a, b))
663
664
665 if __name__ == "__main__":
666 unittest.main()