Update wolfSSL to the latest version(v.4.4.0) (#186)

* deleted old version wolfSSL before updating

* updated wolfSSL to the latest version(v4.4.0)

* updated wolfSSL to the latest version(v4.4.0)

* added macros for timing resistance

Co-authored-by: RichardBarry <3073890+RichardBarry@users.noreply.github.com>
Co-authored-by: Ming Yue <mingyue86010@gmail.com>

FreeRTOS-Plus/Source/WolfSSL/wrapper/python/wolfcrypt/test/test_random.py

@@ -0,0 +1,39 @@
+# test_random.py
+#
+# Copyright (C) 2006-2020 wolfSSL Inc.
+#
+# This file is part of wolfSSL.
+#
+# wolfSSL is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# wolfSSL is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+#/
+import unittest
+from wolfcrypt.random import *
+
+
+class TestRandom(unittest.TestCase):
+
+
+    def setUp(self):
+        self.random = Random()
+
+
+    def test_byte(self):
+        assert len(self.random.byte()) == 1
+
+
+    def test_bytes(self):
+        assert len(self.random.bytes(1)) == 1
+        assert len(self.random.bytes(10)) == 10
+        assert len(self.random.bytes(100)) == 100