The client logs into the server with a key. If the client is a brand new computer, for example, and upgrade or you've lost a disk and are rebuilding a new computer, you don't have the key.
Someone who's a superuser on the server can get the keys from the backup, but that's not a reasonable solution for a "simple" backup tool.
Also, typically you'll be restoring to a different machine name, so you need to be able to specify the source server. You can't just take what's in the .conf file.
The client logs into the server with a key. If the client is a brand new computer, for example, and upgrade or you've lost a disk and are rebuilding a new computer, you don't have the key.
Someone who's a superuser on the server can get the keys from the backup, but that's not a reasonable solution for a "simple" backup tool.
Also, typically you'll be restoring to a different machine name, so you need to be able to specify the source server. You can't just take what's in the
.conf
file.