Fix test_config

tests/test_config.py

@@ -1,9 +1,10 @@
-from umbral.config import _CONFIG
-import pytest
 import importlib
-from cryptography.hazmat.primitives.asymmetric import ec
+import pytest
 import warnings
 
+from umbral.config import _CONFIG
+from umbral.curve import SECP256K1, SECP256R1
+
 
 def _copy_config_for_testing():
     """
@@ -33,7 +34,7 @@ def test_try_to_use_curve_with_no_default_curve():
         assert caught_warnings[0].category == RuntimeWarning
 
     # Now, a default curve has been set.
-    assert config._CONFIG._CONFIG__curve == ec.SECP256K1
+    assert config._CONFIG._CONFIG__curve == SECP256K1()
 
 
 def test_try_to_use_default_params_with_no_default_curve():
@@ -51,18 +52,18 @@ def test_try_to_use_default_params_with_no_default_curve():
         assert caught_warnings[0].category == RuntimeWarning
 
     # Now, a default curve has been set.
-    assert config._CONFIG._CONFIG__curve == ec.SECP256K1
+    assert config._CONFIG._CONFIG__curve == SECP256K1()
 
 
 def test_cannot_set_default_curve_twice():
     config = _copy_config_for_testing()
 
-    # pyumbral even supports untrustworthy curves!
-    config.set_default_curve(ec.SECP256R1)
+    # pyumbral even supports NIST curves!
+    config.set_default_curve(SECP256R1())
 
     # Our default curve has been set...
-    assert config.default_curve() == ec.SECP256R1
+    assert config.default_curve() == SECP256R1()
 
     # ...but once set, you can't set the default curve again, even if you've found a better one.
     with pytest.raises(config._CONFIG.UmbralConfigurationError):
-        config.set_default_curve(ec.SECP256K1)
+        config.set_default_curve(SECP256K1())

umbral/signing.py

@@ -43,6 +43,7 @@ class Signature:
         """
         cryptography_pub_key = verifying_key.to_cryptography_pubkey()
 
+        # TODO: Raise error instead of returning boolean
         try:
             cryptography_pub_key.verify(
                 self._der_encoded_bytes(),