Implemented support for loading EC private keys

Loads Elliptic Curve private keys from .PEM files, whether encrypted or
unencrypted, given that the encryption method is supported. Also included
changes to the test files and documentation for said method.

1 files changed, 23 insertions, 0 deletions

diff --git a/tests/hazmat/primitives/test_serialization.py b/tests/hazmat/primitives/test_serialization.py
index 9333a6bd..4d32fba2 100644
--- a/tests/hazmat/primitives/test_serialization.py
+++ b/tests/hazmat/primitives/test_serialization.py
@@ -46,6 +46,29 @@ class TestPEMSerialization(object):
         if isinstance(key, interfaces.RSAPrivateKeyWithNumbers):
             _check_rsa_private_numbers(key.private_numbers())
 
+    def test_load_pem_ec_private_key_unencrypted(self, backend):
+        key = load_vectors_from_file(
+            os.path.join(
+                "asymmetric", "PEM_Serialization", "ec_private_key.pem"),
+            lambda pemfile: load_pem_private_key(
+                pemfile.read().encode(), None, backend
+            )
+        )
+
+        assert key
+        assert isinstance(key, interfaces.EllipticCurvePrivateKey)
+
+    def test_load_pem_ec_private_key_encrypted(self, backend):
+        key = load_vectors_from_file(
+            os.path.join(
+                "asymmetric", "PEM_Serialization", "ec_private_key_encrypted.pem"),
+            lambda pemfile: load_pem_private_key(
+                pemfile.read().encode(), b"123456", backend
+            )
+        )
+
+        assert key
+        assert isinstance(key, interfaces.EllipticCurvePrivateKey)
 
 @pytest.mark.traditional_openssl_serialization
 class TestTraditionalOpenSSLSerialization(object):