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109 lines
3.6 KiB
Python
109 lines
3.6 KiB
Python
import hmac
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import unittest
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import test_support
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class TestVectorsTestCase(unittest.TestCase):
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def test_vectors(self):
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"""Test the HMAC module against test vectors from the RFC."""
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def md5test(key, data, digest):
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h = hmac.HMAC(key, data)
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self.failUnless(h.hexdigest().upper() == digest.upper())
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md5test(chr(0x0b) * 16,
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"Hi There",
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"9294727A3638BB1C13F48EF8158BFC9D")
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md5test("Jefe",
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"what do ya want for nothing?",
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"750c783e6ab0b503eaa86e310a5db738")
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md5test(chr(0xAA)*16,
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chr(0xDD)*50,
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"56be34521d144c88dbb8c733f0e8b3f6")
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class ConstructorTestCase(unittest.TestCase):
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def test_normal(self):
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"""Standard constructor call."""
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failed = 0
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try:
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h = hmac.HMAC("key")
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except:
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self.fail("Standard constructor call raised exception.")
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def test_withtext(self):
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"""Constructor call with text."""
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try:
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h = hmac.HMAC("key", "hash this!")
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except:
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self.fail("Constructor call with text argument raised exception.")
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def test_withmodule(self):
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"""Constructor call with text and digest module."""
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import sha
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try:
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h = hmac.HMAC("key", "", sha)
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except:
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self.fail("Constructor call with sha module raised exception.")
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class SanityTestCase(unittest.TestCase):
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def test_default_is_md5(self):
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"""Testing if HMAC defaults to MD5 algorithm."""
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import md5
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h = hmac.HMAC("key")
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self.failUnless(h.digestmod == md5)
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def test_exercise_all_methods(self):
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"""Exercising all methods once."""
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# This must not raise any exceptions
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try:
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h = hmac.HMAC("my secret key")
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h.update("compute the hash of this text!")
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dig = h.digest()
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dig = h.hexdigest()
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h2 = h.copy()
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except:
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fail("Exception raised during normal usage of HMAC class.")
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class CopyTestCase(unittest.TestCase):
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def test_attributes(self):
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"""Testing if attributes are of same type."""
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h1 = hmac.HMAC("key")
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h2 = h1.copy()
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self.failUnless(h1.digestmod == h2.digestmod,
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"Modules don't match.")
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self.failUnless(type(h1.inner) == type(h2.inner),
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"Types of inner don't match.")
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self.failUnless(type(h1.outer) == type(h2.outer),
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"Types of outer don't match.")
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def test_realcopy(self):
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"""Testing if the copy method created a real copy."""
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h1 = hmac.HMAC("key")
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h2 = h1.copy()
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# Using id() in case somebody has overridden __cmp__.
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self.failUnless(id(h1) != id(h2), "No real copy of the HMAC instance.")
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self.failUnless(id(h1.inner) != id(h2.inner),
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"No real copy of the attribute 'inner'.")
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self.failUnless(id(h1.outer) != id(h2.outer),
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"No real copy of the attribute 'outer'.")
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def test_equality(self):
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"""Testing if the copy has the same digests."""
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h1 = hmac.HMAC("key")
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h1.update("some random text")
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h2 = h1.copy()
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self.failUnless(h1.digest() == h2.digest(),
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"Digest of copy doesn't match original digest.")
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self.failUnless(h1.hexdigest() == h2.hexdigest(),
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"Hexdigest of copy doesn't match original hexdigest.")
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def test_main():
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test_support.run_unittest(TestVectorsTestCase)
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test_support.run_unittest(ConstructorTestCase)
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test_support.run_unittest(SanityTestCase)
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test_support.run_unittest(CopyTestCase)
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if __name__ == "__main__":
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test_main()
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