I'm looking for a veracrypt/truecrypt equivalent but at the folder-level and dynamic sizing
Something like a tool which could encrypt folders in real-time and then be able to lock it up. Truecrypt expects me to provide a size for it, I'd like something more dynamically sizeable based on the files I store in it.
Even just a tool that encrypts files written into it and converts them to other files works with me
tomb looks like a nice wrapper around LUKS but it doesn't appear to support creating a sparse file, so, it will immediately use however much space you allocate to it.
(I think it doesn't support a sparse backing file because I searched the word "sparse" on their github, and for the word "seek" (which is the dd argument for creating a sparse file) in the tomb bash script, and both searches yielded no results.)