I replaced the hard disk of my notebook and installed a fresh openSuSE Leap 15 distribution on it. I took this opportunity to get some knowledge about encryption using Linux. openSuSE makes it easy to create the encryption during the installation process. I could choose it for every partition with only one additional click. I tried it out with encryption for all partitions that I created during the installation process and also with the encryption of only the data (home) partition. I decided that the second option would work for me and thus I went with that option.
If I didn’t overlook something openSuSE offers only the option to set the first key for the encryption of a partition. Thus I had to use the command line to add further keys to the encryption key wallet.