Backup from google drive

[aab]

Hi,
 I want to decrypt the backup file which I got from the google-drive, I want to make changes to it, does anyone know the command I can use to decrypt the backup of the configuration.xml ?
And secondly, if I have a running opnsense, where can I find the full configuration along with the user database ? full configuration which I can copy and restore to a new instance of opnsense.

Thanks in advance

Best Regards

[aab]

Atleast I now know that the full configuration is at /conf/config.xml

But please someone answer this  https://forum.opnsense.org/index.php?topic=40896.0