| """ |
| Unit tests for L{OpenSSL.crypto}. |
| """ |
| |
| from unittest import TestCase |
| |
| from OpenSSL.crypto import TYPE_RSA, TYPE_DSA, Error, PKey, PKeyType |
| from OpenSSL.crypto import X509, X509Name, X509NameType |
| from OpenSSL.crypto import X509Req, X509ReqType |
| |
| class _Python23TestCaseHelper: |
| # Python 2.3 compatibility. |
| def assertTrue(self, *a, **kw): |
| return self.failUnless(*a, **kw) |
| |
| |
| def assertFalse(self, *a, **kw): |
| return self.failIf(*a, **kw) |
| |
| |
| |
| class PKeyTests(TestCase, _Python23TestCaseHelper): |
| """ |
| Unit tests for L{OpenSSL.crypto.PKey}. |
| """ |
| def test_construction(self): |
| """ |
| L{PKey} takes no arguments and returns a new L{PKeyType} instance. |
| """ |
| self.assertRaises(TypeError, PKey, None) |
| key = PKey() |
| self.assertTrue( |
| isinstance(key, PKeyType), |
| "%r is of type %r, should be %r" % (key, type(key), PKeyType)) |
| |
| |
| def test_pregeneration(self): |
| """ |
| L{PKeyType.bits} and L{PKeyType.type} return C{0} before the key is |
| generated. |
| """ |
| key = PKey() |
| self.assertEqual(key.type(), 0) |
| self.assertEqual(key.bits(), 0) |
| |
| |
| def test_failedGeneration(self): |
| """ |
| L{PKeyType.generate_key} takes two arguments, the first giving the key |
| type as one of L{TYPE_RSA} or L{TYPE_DSA} and the second giving the |
| number of bits to generate. If an invalid type is specified or |
| generation fails, L{Error} is raised. If an invalid number of bits is |
| specified, L{ValueError} or L{Error} is raised. |
| """ |
| key = PKey() |
| self.assertRaises(TypeError, key.generate_key) |
| self.assertRaises(TypeError, key.generate_key, 1, 2, 3) |
| self.assertRaises(TypeError, key.generate_key, "foo", "bar") |
| self.assertRaises(Error, key.generate_key, -1, 0) |
| |
| self.assertRaises(ValueError, key.generate_key, TYPE_RSA, -1) |
| self.assertRaises(ValueError, key.generate_key, TYPE_RSA, 0) |
| |
| # XXX RSA generation for small values of bits is fairly buggy in a wide |
| # range of OpenSSL versions. I need to figure out what the safe lower |
| # bound for a reasonable number of OpenSSL versions is and explicitly |
| # check for that in the wrapper. The failure behavior is typically an |
| # infinite loop inside OpenSSL. |
| |
| # self.assertRaises(Error, key.generate_key, TYPE_RSA, 2) |
| |
| # XXX DSA generation seems happy with any number of bits. The DSS |
| # says bits must be between 512 and 1024 inclusive. OpenSSL's DSA |
| # generator doesn't seem to care about the upper limit at all. For |
| # the lower limit, it uses 512 if anything smaller is specified. |
| # So, it doesn't seem possible to make generate_key fail for |
| # TYPE_DSA with a bits argument which is at least an int. |
| |
| # self.assertRaises(Error, key.generate_key, TYPE_DSA, -7) |
| |
| |
| def test_rsaGeneration(self): |
| """ |
| L{PKeyType.generate_key} generates an RSA key when passed |
| L{TYPE_RSA} as a type and a reasonable number of bits. |
| """ |
| bits = 128 |
| key = PKey() |
| key.generate_key(TYPE_RSA, bits) |
| self.assertEqual(key.type(), TYPE_RSA) |
| self.assertEqual(key.bits(), bits) |
| |
| |
| def test_dsaGeneration(self): |
| """ |
| L{PKeyType.generate_key} generates a DSA key when passed |
| L{TYPE_DSA} as a type and a reasonable number of bits. |
| """ |
| # 512 is a magic number. The DSS (Digital Signature Standard) |
| # allows a minimum of 512 bits for DSA. DSA_generate_parameters |
| # will silently promote any value below 512 to 512. |
| bits = 512 |
| key = PKey() |
| key.generate_key(TYPE_DSA, bits) |
| self.assertEqual(key.type(), TYPE_DSA) |
| self.assertEqual(key.bits(), bits) |
| |
| |
| def test_regeneration(self): |
| """ |
| L{PKeyType.generate_key} can be called multiple times on the same |
| key to generate new keys. |
| """ |
| key = PKey() |
| for type, bits in [(TYPE_RSA, 512), (TYPE_DSA, 576)]: |
| key.generate_key(type, bits) |
| self.assertEqual(key.type(), type) |
| self.assertEqual(key.bits(), bits) |
| |
| |
| |
| class X509NameTests(TestCase, _Python23TestCaseHelper): |
| """ |
| Unit tests for L{OpenSSL.crypto.X509Name}. |
| """ |
| def _x509name(self, **attrs): |
| # XXX There's no other way to get a new X509Name yet. |
| name = X509().get_subject() |
| attrs = attrs.items() |
| # Make the order stable - order matters! |
| attrs.sort(lambda (k1, v1), (k2, v2): cmp(v1, v2)) |
| for k, v in attrs: |
| setattr(name, k, v) |
| return name |
| |
| |
| def test_attributes(self): |
| """ |
| L{X509NameType} instances have attributes for each standard (?) |
| X509Name field. |
| """ |
| name = self._x509name() |
| name.commonName = "foo" |
| self.assertEqual(name.commonName, "foo") |
| self.assertEqual(name.CN, "foo") |
| name.CN = "baz" |
| self.assertEqual(name.commonName, "baz") |
| self.assertEqual(name.CN, "baz") |
| name.commonName = "bar" |
| self.assertEqual(name.commonName, "bar") |
| self.assertEqual(name.CN, "bar") |
| name.CN = "quux" |
| self.assertEqual(name.commonName, "quux") |
| self.assertEqual(name.CN, "quux") |
| |
| |
| def test_copy(self): |
| """ |
| L{X509Name} creates a new L{X509NameType} instance with all the same |
| attributes as an existing L{X509NameType} instance when called with |
| one. |
| """ |
| name = self._x509name(commonName="foo", emailAddress="bar@example.com") |
| |
| copy = X509Name(name) |
| self.assertEqual(copy.commonName, "foo") |
| self.assertEqual(copy.emailAddress, "bar@example.com") |
| |
| # Mutate the copy and ensure the original is unmodified. |
| copy.commonName = "baz" |
| self.assertEqual(name.commonName, "foo") |
| |
| # Mutate the original and ensure the copy is unmodified. |
| name.emailAddress = "quux@example.com" |
| self.assertEqual(copy.emailAddress, "bar@example.com") |
| |
| |
| def test_repr(self): |
| """ |
| L{repr} passed an L{X509NameType} instance should return a string |
| containing a description of the type and the NIDs which have been set |
| on it. |
| """ |
| name = self._x509name(commonName="foo", emailAddress="bar") |
| self.assertEqual( |
| repr(name), |
| "<X509Name object '/emailAddress=bar/CN=foo'>") |
| |
| |
| def test_comparison(self): |
| """ |
| L{X509NameType} instances should compare based on their NIDs. |
| """ |
| def _equality(a, b, assertTrue, assertFalse): |
| assertTrue(a == b, "(%r == %r) --> False" % (a, b)) |
| assertFalse(a != b) |
| assertTrue(b == a) |
| assertFalse(b != a) |
| |
| def assertEqual(a, b): |
| _equality(a, b, self.assertTrue, self.assertFalse) |
| |
| # Instances compare equal to themselves. |
| name = self._x509name() |
| assertEqual(name, name) |
| |
| # Empty instances should compare equal to each other. |
| assertEqual(self._x509name(), self._x509name()) |
| |
| # Instances with equal NIDs should compare equal to each other. |
| assertEqual(self._x509name(commonName="foo"), |
| self._x509name(commonName="foo")) |
| |
| # Instance with equal NIDs set using different aliases should compare |
| # equal to each other. |
| assertEqual(self._x509name(commonName="foo"), |
| self._x509name(CN="foo")) |
| |
| # Instances with more than one NID with the same values should compare |
| # equal to each other. |
| assertEqual(self._x509name(CN="foo", organizationalUnitName="bar"), |
| self._x509name(commonName="foo", OU="bar")) |
| |
| def assertNotEqual(a, b): |
| _equality(a, b, self.assertFalse, self.assertTrue) |
| |
| # Instances with different values for the same NID should not compare |
| # equal to each other. |
| assertNotEqual(self._x509name(CN="foo"), |
| self._x509name(CN="bar")) |
| |
| # Instances with different NIDs should not compare equal to each other. |
| assertNotEqual(self._x509name(CN="foo"), |
| self._x509name(OU="foo")) |
| |
| def _inequality(a, b, assertTrue, assertFalse): |
| assertTrue(a < b) |
| assertTrue(a <= b) |
| assertTrue(b > a) |
| assertTrue(b >= a) |
| assertFalse(a > b) |
| assertFalse(a >= b) |
| assertFalse(b < a) |
| assertFalse(b <= a) |
| |
| def assertLessThan(a, b): |
| _inequality(a, b, self.assertTrue, self.assertFalse) |
| |
| # An X509Name with a NID with a value which sorts less than the value |
| # of the same NID on another X509Name compares less than the other |
| # X509Name. |
| assertLessThan(self._x509name(CN="abc"), |
| self._x509name(CN="def")) |
| |
| def assertGreaterThan(a, b): |
| _inequality(a, b, self.assertFalse, self.assertTrue) |
| |
| # An X509Name with a NID with a value which sorts greater than the |
| # value of the same NID on another X509Name compares greater than the |
| # other X509Name. |
| assertGreaterThan(self._x509name(CN="def"), |
| self._x509name(CN="abc")) |
| |
| |
| |
| class X509ReqTests(TestCase, _Python23TestCaseHelper): |
| """ |
| Tests for L{OpenSSL.crypto.X509Req}. |
| """ |
| def test_construction(self): |
| """ |
| L{X509Req} takes no arguments and returns an L{X509ReqType} instance. |
| """ |
| request = X509Req() |
| self.assertTrue( |
| isinstance(request, X509ReqType), |
| "%r is of type %r, should be %r" % (request, type(request), X509ReqType)) |
| |
| |
| def test_get_subject(self): |
| """ |
| L{X509ReqType.get_subject} returns an L{X509Name} for the subject of |
| the request and which is valid even after the request object is |
| otherwise dead. |
| """ |
| request = X509Req() |
| subject = request.get_subject() |
| self.assertTrue( |
| isinstance(subject, X509NameType), |
| "%r is of type %r, should be %r" % (subject, type(subject), X509NameType)) |
| subject.commonName = "foo" |
| self.assertEqual(request.get_subject().commonName, "foo") |
| del request |
| subject.commonName = "bar" |
| self.assertEqual(subject.commonName, "bar") |