import hmac import unittest from test import test_support class TestVectorsTestCase(unittest.TestCase): def test_vectors(self): """Test the HMAC module against test vectors from the RFC.""" def md5test(key, data, digest): h = hmac.HMAC(key, data) self.failUnless(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") 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.""" import sha try: h = hmac.HMAC("key", "", sha) except: self.fail("Constructor call with sha module raised exception.") class SanityTestCase(unittest.TestCase): def test_default_is_md5(self): """Testing if HMAC defaults to MD5 algorithm.""" import md5 h = hmac.HMAC("key") self.failUnless(h.digestmod == 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.failUnless(h1.digestmod == h2.digestmod, "Modules don't match.") self.failUnless(type(h1.inner) == type(h2.inner), "Types of inner don't match.") self.failUnless(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.failUnless(id(h1) != id(h2), "No real copy of the HMAC instance.") self.failUnless(id(h1.inner) != id(h2.inner), "No real copy of the attribute 'inner'.") self.failUnless(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.failUnless(h1.digest() == h2.digest(), "Digest of copy doesn't match original digest.") self.failUnless(h1.hexdigest() == h2.hexdigest(), "Hexdigest of copy doesn't match original hexdigest.") def test_main(): test_support.run_unittest(TestVectorsTestCase) test_support.run_unittest(ConstructorTestCase) test_support.run_unittest(SanityTestCase) test_support.run_unittest(CopyTestCase) if __name__ == "__main__": test_main()