[neilh23]

Vim's built-in encryption is pretty useful, although the default cipher is weak (you can override this in the vimrc).

[IgorPartola]

I didn't know vim had any built-in encryption. I've been using this for a while: https://gist.github.com/ipartola/ea5a88675cc548425ecb

Basically, I just do something like `vim foo.txt.gpg` and it transparently encrypts/decrypts the contents.