How to edit a .gpg file with vi?

Question

So I created a gpg encrypted file with password:

gpg -c passwords.txt.gpg

how can I open it with vi, edit it, then close it? (So that no passwords.txt file will be created, the decrypted passwords.txt is only in the memory! - better: after closing the passwords.txt.gpg file, the memory should be cleaned, so it shouldn't contain unencrypted passwords).

Answer 1

The gnupg plugin for Vim does this:

This script implements transparent editing of gpg encrypted files. The filename must have a ".gpg", ".pgp" or ".asc" suffix. When opening such a file the content is decrypted, when opening a new file the script will ask for the recipients of the encrypted file. The file content will be encrypted to all recipients before it is written. The script turns off viminfo and swapfile to increase security.