| 1 | n/a | """ |
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| 2 | n/a | Test suite to check compliance with PEP 247, the standard API |
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| 3 | n/a | for hashing algorithms |
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| 4 | n/a | """ |
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| 5 | n/a | |
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| 6 | n/a | import hmac |
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| 7 | n/a | import unittest |
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| 8 | n/a | from hashlib import md5, sha1, sha224, sha256, sha384, sha512 |
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| 9 | n/a | |
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| 10 | n/a | class Pep247Test(unittest.TestCase): |
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| 11 | n/a | |
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| 12 | n/a | def check_module(self, module, key=None): |
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| 13 | n/a | self.assertTrue(hasattr(module, 'digest_size')) |
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| 14 | n/a | self.assertTrue(module.digest_size is None or module.digest_size > 0) |
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| 15 | n/a | self.check_object(module.new, module.digest_size, key) |
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| 16 | n/a | |
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| 17 | n/a | def check_object(self, cls, digest_size, key, digestmod=None): |
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| 18 | n/a | if key is not None: |
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| 19 | n/a | if digestmod is None: |
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| 20 | n/a | digestmod = md5 |
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| 21 | n/a | obj1 = cls(key, digestmod=digestmod) |
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| 22 | n/a | obj2 = cls(key, b'string', digestmod=digestmod) |
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| 23 | n/a | h1 = cls(key, b'string', digestmod=digestmod).digest() |
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| 24 | n/a | obj3 = cls(key, digestmod=digestmod) |
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| 25 | n/a | obj3.update(b'string') |
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| 26 | n/a | h2 = obj3.digest() |
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| 27 | n/a | else: |
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| 28 | n/a | obj1 = cls() |
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| 29 | n/a | obj2 = cls(b'string') |
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| 30 | n/a | h1 = cls(b'string').digest() |
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| 31 | n/a | obj3 = cls() |
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| 32 | n/a | obj3.update(b'string') |
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| 33 | n/a | h2 = obj3.digest() |
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| 34 | n/a | self.assertEqual(h1, h2) |
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| 35 | n/a | self.assertTrue(hasattr(obj1, 'digest_size')) |
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| 36 | n/a | |
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| 37 | n/a | if digest_size is not None: |
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| 38 | n/a | self.assertEqual(obj1.digest_size, digest_size) |
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| 39 | n/a | |
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| 40 | n/a | self.assertEqual(obj1.digest_size, len(h1)) |
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| 41 | n/a | obj1.update(b'string') |
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| 42 | n/a | obj_copy = obj1.copy() |
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| 43 | n/a | self.assertEqual(obj1.digest(), obj_copy.digest()) |
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| 44 | n/a | self.assertEqual(obj1.hexdigest(), obj_copy.hexdigest()) |
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| 45 | n/a | |
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| 46 | n/a | digest, hexdigest = obj1.digest(), obj1.hexdigest() |
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| 47 | n/a | hd2 = "" |
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| 48 | n/a | for byte in digest: |
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| 49 | n/a | hd2 += '%02x' % byte |
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| 50 | n/a | self.assertEqual(hd2, hexdigest) |
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| 51 | n/a | |
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| 52 | n/a | def test_md5(self): |
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| 53 | n/a | self.check_object(md5, None, None) |
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| 54 | n/a | |
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| 55 | n/a | def test_sha(self): |
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| 56 | n/a | self.check_object(sha1, None, None) |
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| 57 | n/a | self.check_object(sha224, None, None) |
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| 58 | n/a | self.check_object(sha256, None, None) |
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| 59 | n/a | self.check_object(sha384, None, None) |
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| 60 | n/a | self.check_object(sha512, None, None) |
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| 61 | n/a | |
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| 62 | n/a | def test_hmac(self): |
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| 63 | n/a | self.check_module(hmac, key=b'abc') |
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| 64 | n/a | |
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| 65 | n/a | if __name__ == '__main__': |
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| 66 | n/a | unittest.main() |
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