I always had my backups running with an user and pki pub authentication.
I had it in r77.20, r80.40, r81.10.
However I am having issues in r81.20 to set it up.
I can run a once off backup using my user authenticating with pki in my scp server.
However the same setting fail with scheduled backups.
But I can run local scheduled backups.
This is the error I get
scheduled_backup: Error : Base64 decode failed
scheduled_backup: schedule backup: obfuscation error
scheduled_backup: /bin/scheduled_backup: rc=-1
Any idea?