I want to write a generic script that compresses and passphrases files at rest before I do an offsite backup, gpg is too slow so im just giving up on it, it doesnt need to be super secure as my transport tunnel is secure, my server is secure (lel) etc and I write (and soon destroy) them at a rate where if you get a few it's a fraction of a fraction of a useful thing anyway but it would make me feel better about this. tips?