diff options
Diffstat (limited to 'tests/hazmat/backends/test_openssl.py')
| -rw-r--r-- | tests/hazmat/backends/test_openssl.py | 109 |
1 files changed, 81 insertions, 28 deletions
diff --git a/tests/hazmat/backends/test_openssl.py b/tests/hazmat/backends/test_openssl.py index 19274bf8..0ccf7286 100644 --- a/tests/hazmat/backends/test_openssl.py +++ b/tests/hazmat/backends/test_openssl.py @@ -43,11 +43,20 @@ class DummyCipher(object): name = "dummy-cipher" +@utils.register_interface(interfaces.AsymmetricPadding) +class DummyPadding(object): + name = "dummy-cipher" + + @utils.register_interface(interfaces.HashAlgorithm) class DummyHash(object): name = "dummy-hash" +class DummyMGF(object): + _salt_length = 0 + + class TestOpenSSL(object): def test_backend_exists(self): assert backend @@ -151,15 +160,6 @@ class TestOpenSSL(object): with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_HASH): backend.derive_pbkdf2_hmac(hashes.SHA256(), 10, b"", 1000, b"") - # This test is not in the TestOpenSSLRandomEngine class because to check - # if it's really default we don't want to run the setup_method before it - def test_osrandom_engine_is_default(self): - e = backend._lib.ENGINE_get_default_RAND() - name = backend._lib.ENGINE_get_name(e) - assert name == backend._lib.Cryptography_osrandom_engine_name - res = backend._lib.ENGINE_free(e) - assert res == 1 - @pytest.mark.skipif( backend._lib.OPENSSL_VERSION_NUMBER >= 0x1000000f, reason="Requires an older OpenSSL. Must be < 1.0.0" @@ -181,6 +181,25 @@ class TestOpenSSL(object): parameters = dsa.DSAParameters.generate(3072, backend) assert utils.bit_length(parameters.p) == 3072 + def test_int_to_bn(self): + value = (2 ** 4242) - 4242 + bn = backend._int_to_bn(value) + assert bn != backend._ffi.NULL + bn = backend._ffi.gc(bn, backend._lib.BN_free) + + assert bn + assert backend._bn_to_int(bn) == value + + def test_int_to_bn_inplace(self): + value = (2 ** 4242) - 4242 + bn_ptr = backend._lib.BN_new() + assert bn_ptr != backend._ffi.NULL + bn_ptr = backend._ffi.gc(bn_ptr, backend._lib.BN_free) + bn = backend._int_to_bn(value, bn_ptr) + + assert bn == bn_ptr + assert backend._bn_to_int(bn_ptr) == value + class TestOpenSSLRandomEngine(object): def teardown_method(self, method): @@ -191,6 +210,15 @@ class TestOpenSSLRandomEngine(object): name = backend._lib.ENGINE_get_name(current_default) assert name == backend._lib.Cryptography_osrandom_engine_name + # This must be the first test in the class so that the teardown method + # has not (potentially) altered the default engine. + def test_osrandom_engine_is_default(self): + e = backend._lib.ENGINE_get_default_RAND() + name = backend._lib.ENGINE_get_name(e) + assert name == backend._lib.Cryptography_osrandom_engine_name + res = backend._lib.ENGINE_free(e) + assert res == 1 + def test_osrandom_sanity_check(self): # This test serves as a check against catastrophic failure. buf = backend._ffi.new("char[]", 500) @@ -241,27 +269,14 @@ class TestOpenSSLRandomEngine(object): e = backend._lib.ENGINE_get_default_RAND() assert e == backend._ffi.NULL - def test_int_to_bn(self): - value = (2 ** 4242) - 4242 - bn = backend._int_to_bn(value) - assert bn != backend._ffi.NULL - bn = backend._ffi.gc(bn, backend._lib.BN_free) - - assert bn - assert backend._bn_to_int(bn) == value - - def test_int_to_bn_inplace(self): - value = (2 ** 4242) - 4242 - bn_ptr = backend._lib.BN_new() - assert bn_ptr != backend._ffi.NULL - bn_ptr = backend._ffi.gc(bn_ptr, backend._lib.BN_free) - bn = backend._int_to_bn(value, bn_ptr) - - assert bn == bn_ptr - assert backend._bn_to_int(bn_ptr) == value - class TestOpenSSLRSA(object): + def test_generate_rsa_parameters_supported(self): + assert backend.generate_rsa_parameters_supported(1, 1024) is False + assert backend.generate_rsa_parameters_supported(4, 1024) is False + assert backend.generate_rsa_parameters_supported(3, 1024) is True + assert backend.generate_rsa_parameters_supported(3, 511) is False + @pytest.mark.skipif( backend._lib.OPENSSL_VERSION_NUMBER >= 0x1000100f, reason="Requires an older OpenSSL. Must be < 1.0.1" @@ -300,6 +315,44 @@ class TestOpenSSLRSA(object): def test_unsupported_mgf1_hash_algorithm(self): assert backend.mgf1_hash_supported(DummyHash()) is False + def test_rsa_padding_unsupported_pss_mgf1_hash(self): + assert backend.rsa_padding_supported( + padding.PSS(mgf=padding.MGF1(DummyHash()), salt_length=0) + ) is False + + def test_rsa_padding_unsupported(self): + assert backend.rsa_padding_supported(DummyPadding()) is False + + def test_rsa_padding_supported_pkcs1v15(self): + assert backend.rsa_padding_supported(padding.PKCS1v15()) is True + + def test_rsa_padding_supported_pss(self): + assert backend.rsa_padding_supported( + padding.PSS(mgf=padding.MGF1(hashes.SHA1()), salt_length=0) + ) is True + + def test_rsa_padding_supported_oaep(self): + assert backend.rsa_padding_supported( + padding.OAEP( + mgf=padding.MGF1(algorithm=hashes.SHA1()), + algorithm=hashes.SHA1(), + label=None + ), + ) is True + + def test_rsa_padding_unsupported_mgf(self): + assert backend.rsa_padding_supported( + padding.OAEP( + mgf=DummyMGF(), + algorithm=hashes.SHA1(), + label=None + ), + ) is False + + assert backend.rsa_padding_supported( + padding.PSS(mgf=DummyMGF(), salt_length=0) + ) is False + def test_unsupported_mgf1_hash_algorithm_decrypt(self): private_key = rsa.RSAPrivateKey.generate( public_exponent=65537, |