adds docs

wrapper/python/wolfcrypt/utils.py

@@ -0,0 +1,38 @@
+# utils.py
+#
+# Copyright (C) 2006-2016 wolfSSL Inc.
+#
+# This file is part of wolfSSL. (formerly known as CyaSSL)
+#
+# 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 02110-1301, USA
+import sys
+from binascii import hexlify as b2h, unhexlify as h2b
+
+
+if sys.version_info[0] == 3:
+    _text_type = str
+    _binary_type = bytes
+else:
+    _text_type = unicode
+    _binary_type = str
+
+
+def t2b(s):
+    """
+    Converts text to bynary.
+    """
+    if isinstance(s, _binary_type):
+        return s
+    return _text_type(s).encode("utf-8")