added hmac library and removed config options from the client

bitwardenBackup.py

@@ -9,6 +9,7 @@ import getpass
 import logging
 import secrets
 import base64
+import hmac as pyhmac
 from kmip.core import enums
 from kmip.demos import utils
 from kmip.pie import client
@@ -262,7 +263,7 @@ if __name__ == "__main__":
     config = opts.config
     passphrase = opts.message
     print(pykmip_client_config_file)
-    client = client.ProxyKmipClient(config=config, config_file=pykmip_client_config_file)
+    client = client.ProxyKmipClient(config_file=pykmip_client_config_file)
     client.open()
     print(encrypt(client, "test"))
     client.close()