#!/bin/bash

IFS=$'\n\t'
set -uo pipefail

# Find the cmd to use for GPG
which gpg2 && PROG=gpg2
if [ $? -ne 0 ]; then
    which gpg && PROG=gpg
fi

set -e
if [ ${OPT_DD_IS_LAST} -eq "1" ]; then
    dd if="${OPT_SRC}" bs="${OPT_DD_BS}" skip="${OPT_DD_SKIP}" | ${PROG} -e -r "${OPT_GPG_KEY}" > "${OPT_DST}"
else
    dd if="${OPT_SRC}" count="${OPT_DD_COUNT}" bs="${OPT_DD_BS}" skip="${OPT_DD_SKIP}" | ${PROG} -e -r "${OPT_GPG_KEY}" > "${OPT_DST}"
fi