change derive_elliptic_curve_public_point to return EllipticCurvePubl… (#3243)

* change derive_elliptic_curve_public_point to return EllipticCurvePublicKey

* also rename the backend interface method

* review feedback

* Rename to derive_elliptic_curve_private_key
* Returns EllipticCurvePrivateKey
* Reuses the EC_POINT in the openssl impl
* Rename "secret" arg to "private_value" which is consistent with our
  naming for the value in ECPrivateNumbers.

1 files changed, 3 insertions, 3 deletions

diff --git a/tests/hazmat/backends/test_multibackend.py b/tests/hazmat/backends/test_multibackend.py
index 7ffc4236..ea08e17b 100644
--- a/tests/hazmat/backends/test_multibackend.py
+++ b/tests/hazmat/backends/test_multibackend.py
@@ -185,7 +185,7 @@ class DummyEllipticCurveBackend(object):
             self.elliptic_curve_supported(curve)
         )
 
-    def derive_elliptic_curve_public_point(self, private_value, curve):
+    def derive_elliptic_curve_private_key(self, private_value, curve):
         if not self.elliptic_curve_supported(curve):
             raise UnsupportedAlgorithm(_Reasons.UNSUPPORTED_ELLIPTIC_CURVE)
 
@@ -515,9 +515,9 @@ class TestMultiBackend(object):
         )
 
         with pytest.raises(UnsupportedAlgorithm):
-            backend.derive_elliptic_curve_public_point(123, DummyCurve())
+            backend.derive_elliptic_curve_private_key(123, DummyCurve())
 
-        assert backend.derive_elliptic_curve_public_point(
+        assert backend.derive_elliptic_curve_private_key(
             123, ec.SECT283K1()) is None
 
     def test_pem_serialization_backend(self):