Disable OpenSSL 3 RSA key blinding to speed up unit tests

tests/util.py

@@ -1,4 +1,4 @@
-# Copyright (c) 2015-2020 by Ron Frederick <ronf@timeheart.net> and others.
+# Copyright (c) 2015-2022 by Ron Frederick <ronf@timeheart.net> and others.
 #
 # This program and the accompanying materials are made available under
 # the terms of the Eclipse Public License v2.0 which accompanies this
@@ -31,6 +31,8 @@
 
 from unittest.mock import patch
 
+from cryptography.hazmat.backends.openssl import backend
+
 # pylint: disable=unused-import
 
 try:
@@ -72,6 +74,13 @@
 # pylint: enable=no-member
 
 
+# pylint: disable=protected-access
+
+# Disable RSA key blinding to speed up unit tests
+backend._rsa_skip_check_key = True
+
+# pylint: enable=protected-access
+
 _test_keys = {}