Encryption over the linux file system. How to implement?

Question

linux

There is a system to which the physical disk is connected. I will store personal data on this disk.
The task is to ensure the privacy of data in case this disk gets to third parties. A typical situation - I rent a disk under warranty.
Block device encryption is not my option. I don't like the idea of ​​encrypting file system overhead. It is necessary to encrypt the giblets of files.
I saw this a long time ago when encrypting a user's home directory in ubuntu. If another user gets to the data, then the file system is visible, where instead of file names, directory names, file contents, a mess of symbols is visible.
The ideal option would be to mount the ext4 with the encryption option, with the key specified in a file on another medium. Apart from the key, the data disk is useless, but you can safely do e2fsck

Answer 1

Ubuntu uses ecryptfs.
https://wiki.archlinux.org/index.php/ECryptfs_(%D0...