for theft protection I want to lock my data drive with LUKS.
As my server has a duty cycle of only 1/24 it is only started, when I need access to it.
Also other persons in my familiy will start the server.
So I need an auto-unlock function but I don't want to store the keyfile on the server itself.
This will be some kind of "two-factor-auth".
The keyfile can reside on my OpenWRT Router where it can be accessed by wget, cifs, ftp or nfs.
I searched a couple of hours but did'nt find any solution for this common problem.
Do you have any suggestions?