| import hmac |
| import hashlib |
| import unittest |
| import warnings |
| from test import test_support |
| |
| class TestVectorsTestCase(unittest.TestCase): |
| |
| def test_md5_vectors(self): |
| # Test the HMAC module against test vectors from the RFC. |
| |
| def md5test(key, data, digest): |
| h = hmac.HMAC(key, data) |
| self.assertEqual(h.hexdigest().upper(), digest.upper()) |
| |
| md5test(chr(0x0b) * 16, |
| "Hi There", |
| "9294727A3638BB1C13F48EF8158BFC9D") |
| |
| md5test("Jefe", |
| "what do ya want for nothing?", |
| "750c783e6ab0b503eaa86e310a5db738") |
| |
| md5test(chr(0xAA)*16, |
| chr(0xDD)*50, |
| "56be34521d144c88dbb8c733f0e8b3f6") |
| |
| md5test("".join([chr(i) for i in range(1, 26)]), |
| chr(0xCD) * 50, |
| "697eaf0aca3a3aea3a75164746ffaa79") |
| |
| md5test(chr(0x0C) * 16, |
| "Test With Truncation", |
| "56461ef2342edc00f9bab995690efd4c") |
| |
| md5test(chr(0xAA) * 80, |
| "Test Using Larger Than Block-Size Key - Hash Key First", |
| "6b1ab7fe4bd7bf8f0b62e6ce61b9d0cd") |
| |
| md5test(chr(0xAA) * 80, |
| ("Test Using Larger Than Block-Size Key " |
| "and Larger Than One Block-Size Data"), |
| "6f630fad67cda0ee1fb1f562db3aa53e") |
| |
| def test_sha_vectors(self): |
| def shatest(key, data, digest): |
| h = hmac.HMAC(key, data, digestmod=hashlib.sha1) |
| self.assertEqual(h.hexdigest().upper(), digest.upper()) |
| |
| shatest(chr(0x0b) * 20, |
| "Hi There", |
| "b617318655057264e28bc0b6fb378c8ef146be00") |
| |
| shatest("Jefe", |
| "what do ya want for nothing?", |
| "effcdf6ae5eb2fa2d27416d5f184df9c259a7c79") |
| |
| shatest(chr(0xAA)*20, |
| chr(0xDD)*50, |
| "125d7342b9ac11cd91a39af48aa17b4f63f175d3") |
| |
| shatest("".join([chr(i) for i in range(1, 26)]), |
| chr(0xCD) * 50, |
| "4c9007f4026250c6bc8414f9bf50c86c2d7235da") |
| |
| shatest(chr(0x0C) * 20, |
| "Test With Truncation", |
| "4c1a03424b55e07fe7f27be1d58bb9324a9a5a04") |
| |
| shatest(chr(0xAA) * 80, |
| "Test Using Larger Than Block-Size Key - Hash Key First", |
| "aa4ae5e15272d00e95705637ce8a3b55ed402112") |
| |
| shatest(chr(0xAA) * 80, |
| ("Test Using Larger Than Block-Size Key " |
| "and Larger Than One Block-Size Data"), |
| "e8e99d0f45237d786d6bbaa7965c7808bbff1a91") |
| |
| def _rfc4231_test_cases(self, hashfunc): |
| def hmactest(key, data, hexdigests): |
| h = hmac.HMAC(key, data, digestmod=hashfunc) |
| self.assertEqual(h.hexdigest().lower(), hexdigests[hashfunc]) |
| |
| # 4.2. Test Case 1 |
| hmactest(key = '\x0b'*20, |
| data = 'Hi There', |
| hexdigests = { |
| hashlib.sha224: '896fb1128abbdf196832107cd49df33f' |
| '47b4b1169912ba4f53684b22', |
| hashlib.sha256: 'b0344c61d8db38535ca8afceaf0bf12b' |
| '881dc200c9833da726e9376c2e32cff7', |
| hashlib.sha384: 'afd03944d84895626b0825f4ab46907f' |
| '15f9dadbe4101ec682aa034c7cebc59c' |
| 'faea9ea9076ede7f4af152e8b2fa9cb6', |
| hashlib.sha512: '87aa7cdea5ef619d4ff0b4241a1d6cb0' |
| '2379f4e2ce4ec2787ad0b30545e17cde' |
| 'daa833b7d6b8a702038b274eaea3f4e4' |
| 'be9d914eeb61f1702e696c203a126854', |
| }) |
| |
| # 4.3. Test Case 2 |
| hmactest(key = 'Jefe', |
| data = 'what do ya want for nothing?', |
| hexdigests = { |
| hashlib.sha224: 'a30e01098bc6dbbf45690f3a7e9e6d0f' |
| '8bbea2a39e6148008fd05e44', |
| hashlib.sha256: '5bdcc146bf60754e6a042426089575c7' |
| '5a003f089d2739839dec58b964ec3843', |
| hashlib.sha384: 'af45d2e376484031617f78d2b58a6b1b' |
| '9c7ef464f5a01b47e42ec3736322445e' |
| '8e2240ca5e69e2c78b3239ecfab21649', |
| hashlib.sha512: '164b7a7bfcf819e2e395fbe73b56e0a3' |
| '87bd64222e831fd610270cd7ea250554' |
| '9758bf75c05a994a6d034f65f8f0e6fd' |
| 'caeab1a34d4a6b4b636e070a38bce737', |
| }) |
| |
| # 4.4. Test Case 3 |
| hmactest(key = '\xaa'*20, |
| data = '\xdd'*50, |
| hexdigests = { |
| hashlib.sha224: '7fb3cb3588c6c1f6ffa9694d7d6ad264' |
| '9365b0c1f65d69d1ec8333ea', |
| hashlib.sha256: '773ea91e36800e46854db8ebd09181a7' |
| '2959098b3ef8c122d9635514ced565fe', |
| hashlib.sha384: '88062608d3e6ad8a0aa2ace014c8a86f' |
| '0aa635d947ac9febe83ef4e55966144b' |
| '2a5ab39dc13814b94e3ab6e101a34f27', |
| hashlib.sha512: 'fa73b0089d56a284efb0f0756c890be9' |
| 'b1b5dbdd8ee81a3655f83e33b2279d39' |
| 'bf3e848279a722c806b485a47e67c807' |
| 'b946a337bee8942674278859e13292fb', |
| }) |
| |
| # 4.5. Test Case 4 |
| hmactest(key = ''.join([chr(x) for x in xrange(0x01, 0x19+1)]), |
| data = '\xcd'*50, |
| hexdigests = { |
| hashlib.sha224: '6c11506874013cac6a2abc1bb382627c' |
| 'ec6a90d86efc012de7afec5a', |
| hashlib.sha256: '82558a389a443c0ea4cc819899f2083a' |
| '85f0faa3e578f8077a2e3ff46729665b', |
| hashlib.sha384: '3e8a69b7783c25851933ab6290af6ca7' |
| '7a9981480850009cc5577c6e1f573b4e' |
| '6801dd23c4a7d679ccf8a386c674cffb', |
| hashlib.sha512: 'b0ba465637458c6990e5a8c5f61d4af7' |
| 'e576d97ff94b872de76f8050361ee3db' |
| 'a91ca5c11aa25eb4d679275cc5788063' |
| 'a5f19741120c4f2de2adebeb10a298dd', |
| }) |
| |
| # 4.7. Test Case 6 |
| hmactest(key = '\xaa'*131, |
| data = 'Test Using Larger Than Block-Siz' |
| 'e Key - Hash Key First', |
| hexdigests = { |
| hashlib.sha224: '95e9a0db962095adaebe9b2d6f0dbce2' |
| 'd499f112f2d2b7273fa6870e', |
| hashlib.sha256: '60e431591ee0b67f0d8a26aacbf5b77f' |
| '8e0bc6213728c5140546040f0ee37f54', |
| hashlib.sha384: '4ece084485813e9088d2c63a041bc5b4' |
| '4f9ef1012a2b588f3cd11f05033ac4c6' |
| '0c2ef6ab4030fe8296248df163f44952', |
| hashlib.sha512: '80b24263c7c1a3ebb71493c1dd7be8b4' |
| '9b46d1f41b4aeec1121b013783f8f352' |
| '6b56d037e05f2598bd0fd2215d6a1e52' |
| '95e64f73f63f0aec8b915a985d786598', |
| }) |
| |
| # 4.8. Test Case 7 |
| hmactest(key = '\xaa'*131, |
| data = 'This is a test using a larger th' |
| 'an block-size key and a larger t' |
| 'han block-size data. The key nee' |
| 'ds to be hashed before being use' |
| 'd by the HMAC algorithm.', |
| hexdigests = { |
| hashlib.sha224: '3a854166ac5d9f023f54d517d0b39dbd' |
| '946770db9c2b95c9f6f565d1', |
| hashlib.sha256: '9b09ffa71b942fcb27635fbcd5b0e944' |
| 'bfdc63644f0713938a7f51535c3a35e2', |
| hashlib.sha384: '6617178e941f020d351e2f254e8fd32c' |
| '602420feb0b8fb9adccebb82461e99c5' |
| 'a678cc31e799176d3860e6110c46523e', |
| hashlib.sha512: 'e37b6a775dc87dbaa4dfa9f96e5e3ffd' |
| 'debd71f8867289865df5a32d20cdc944' |
| 'b6022cac3c4982b10d5eeb55c3e4de15' |
| '134676fb6de0446065c97440fa8c6a58', |
| }) |
| |
| def test_sha224_rfc4231(self): |
| self._rfc4231_test_cases(hashlib.sha224) |
| |
| def test_sha256_rfc4231(self): |
| self._rfc4231_test_cases(hashlib.sha256) |
| |
| def test_sha384_rfc4231(self): |
| self._rfc4231_test_cases(hashlib.sha384) |
| |
| def test_sha512_rfc4231(self): |
| self._rfc4231_test_cases(hashlib.sha512) |
| |
| def test_legacy_block_size_warnings(self): |
| class MockCrazyHash(object): |
| """Ain't no block_size attribute here.""" |
| def __init__(self, *args): |
| self._x = hashlib.sha1(*args) |
| self.digest_size = self._x.digest_size |
| def update(self, v): |
| self._x.update(v) |
| def digest(self): |
| return self._x.digest() |
| |
| with warnings.catch_warnings(): |
| warnings.simplefilter('error', RuntimeWarning) |
| with self.assertRaises(RuntimeWarning): |
| hmac.HMAC('a', 'b', digestmod=MockCrazyHash) |
| self.fail('Expected warning about missing block_size') |
| |
| MockCrazyHash.block_size = 1 |
| with self.assertRaises(RuntimeWarning): |
| hmac.HMAC('a', 'b', digestmod=MockCrazyHash) |
| self.fail('Expected warning about small block_size') |
| |
| |
| |
| class ConstructorTestCase(unittest.TestCase): |
| |
| def test_normal(self): |
| # Standard constructor call. |
| failed = 0 |
| try: |
| h = hmac.HMAC("key") |
| except: |
| self.fail("Standard constructor call raised exception.") |
| |
| def test_withtext(self): |
| # Constructor call with text. |
| try: |
| h = hmac.HMAC("key", "hash this!") |
| except: |
| self.fail("Constructor call with text argument raised exception.") |
| |
| def test_withmodule(self): |
| # Constructor call with text and digest module. |
| try: |
| h = hmac.HMAC("key", "", hashlib.sha1) |
| except: |
| self.fail("Constructor call with hashlib.sha1 raised exception.") |
| |
| class SanityTestCase(unittest.TestCase): |
| |
| def test_default_is_md5(self): |
| # Testing if HMAC defaults to MD5 algorithm. |
| # NOTE: this whitebox test depends on the hmac class internals |
| h = hmac.HMAC("key") |
| self.assertTrue(h.digest_cons == hashlib.md5) |
| |
| def test_exercise_all_methods(self): |
| # Exercising all methods once. |
| # This must not raise any exceptions |
| try: |
| h = hmac.HMAC("my secret key") |
| h.update("compute the hash of this text!") |
| dig = h.digest() |
| dig = h.hexdigest() |
| h2 = h.copy() |
| except: |
| self.fail("Exception raised during normal usage of HMAC class.") |
| |
| class CopyTestCase(unittest.TestCase): |
| |
| def test_attributes(self): |
| # Testing if attributes are of same type. |
| h1 = hmac.HMAC("key") |
| h2 = h1.copy() |
| self.assertTrue(h1.digest_cons == h2.digest_cons, |
| "digest constructors don't match.") |
| self.assertTrue(type(h1.inner) == type(h2.inner), |
| "Types of inner don't match.") |
| self.assertTrue(type(h1.outer) == type(h2.outer), |
| "Types of outer don't match.") |
| |
| def test_realcopy(self): |
| # Testing if the copy method created a real copy. |
| h1 = hmac.HMAC("key") |
| h2 = h1.copy() |
| # Using id() in case somebody has overridden __cmp__. |
| self.assertTrue(id(h1) != id(h2), "No real copy of the HMAC instance.") |
| self.assertTrue(id(h1.inner) != id(h2.inner), |
| "No real copy of the attribute 'inner'.") |
| self.assertTrue(id(h1.outer) != id(h2.outer), |
| "No real copy of the attribute 'outer'.") |
| |
| def test_equality(self): |
| # Testing if the copy has the same digests. |
| h1 = hmac.HMAC("key") |
| h1.update("some random text") |
| h2 = h1.copy() |
| self.assertTrue(h1.digest() == h2.digest(), |
| "Digest of copy doesn't match original digest.") |
| self.assertTrue(h1.hexdigest() == h2.hexdigest(), |
| "Hexdigest of copy doesn't match original hexdigest.") |
| |
| def test_main(): |
| test_support.run_unittest( |
| TestVectorsTestCase, |
| ConstructorTestCase, |
| SanityTestCase, |
| CopyTestCase |
| ) |
| |
| if __name__ == "__main__": |
| test_main() |
