makekey() {
        key=$1
        if [ "$key" = "rsa" ] ; then
                bits=2048
        else
                bits=1024
        fi
	filename=dropbear_${key}_host_key
        rm -f ${filename}.pub
        rm -f ${filename}
        dropbearkey -s $bits -t $key -f ${filename} | tail -n2 > ${filename}.pub
}

dbdir=/etc/dropbear
mkdir -p $dbdir
cd $dbdir
makekey rsa
makekey dss
cd - &>/dev/null