How to encrypt a single text file symmetrically in VIM/GVIM:
(https://www.vim.org/download.php or use your package manager)
- open (G)VIM
- :set cm=blowfish2
- :X
- enter your password or -phrase twice; longer is better; 10 words+ excellent!
- optional: write passphrase down hard copy and put in wallet
- enter text as usual; then ESC to exit insert mode
- :w (/path/to)/FILENAME.TXT
- :q
When you open the file again, VIM will ask your passphrase first, then you edit again as usual. Done!
