Transparently edit an encrypted file.

edit-gpg.sh

#!/bin/bash

# Transparently edit an encrypted file.
#
# This system isn't intended to be perfectly secure but is rather intended to
# let me edit encrypted files on dropbox securely.
#
# Inspiration: https://gist.github.com/jakeonfire/9bf7ff1b08ed2c76fefc

set -e
set -o pipefail

if [ $# != 1 ]; then
    echo "usage: $ edit-gpg filename"
    exit 1
fi

tempfile=$(mktemp -t edit-gpg)
function cleanup {
    rm $tempfile
    # echo "Deleted: $tempfile"
}
trap cleanup EXIT

file=$1
read -sp "Password for '$(basename $file)': " passphrase; echo

gpg -qd --passphrase $passphrase -o $tempfile --yes $file
vim -n -i NONE -c "set filetype=txt" $tempfile
gpg -qca --passphrase $passphrase --cipher-algo AES256 -o $file --yes $tempfile