#!/bin/sh decrypt_gpg () { echo "Performing GPG symmetric decryption ..." >&2 if ! /lib/cryptsetup/askpass "Enter passphrase for key $1: " | \ /usr/bin/gpg -q --batch --no-options \ --no-random-seed-file --no-default-keyring \ --keyring /dev/null --secret-keyring /dev/null \ --trustdb-name /dev/null --passphrase-fd 0 --decrypt -- "$1"; then return 1 fi return 0 } if [ ! -x /usr/bin/gpg ]; then echo "$0: /usr/bin/gpg is not available" >&2 exit 1 fi if [ -z "$1" ]; then echo "$0: missing key as argument" >&2 exit 1 fi decrypt_gpg "$1" exit $?