-# Make sure the dropbearkey progam exists
-[ -f /usr/bin/dropbearkey ] || exit 0
-
-# Check for the Dropbear RSA key
-if [ ! -f /etc/dropbear/dropbear_rsa_host_key ] ; then
- (
- echo Generating RSA Key...
- mkdir -p /etc/dropbear
- /usr/bin/dropbearkey -t rsa -f /etc/dropbear/dropbear_rsa_host_key
- [ -f /etc/dropbear/dropbear_rsa_host_key ] && exec $0 $*
- ) > /dev/null 2> /dev/null &
- exit 0
-fi
-
-# Check for the Dropbear DSS key
-if [ ! -f /etc/dropbear/dropbear_dss_host_key ] ; then
- (
- echo Generating DSS Key...
- mkdir -p /etc/dropbear
- /usr/bin/dropbearkey -t dss -f /etc/dropbear/dropbear_dss_host_key
- [ -f /etc/dropbear/dropbear_dss_host_key ] && exec $0 $*
- ) > /dev/null 2> /dev/null &
- exit 0
-fi
-
-umask 077
+for type in rsa dss; do {
+ # check for keys
+ key=/etc/dropbear/dropbear_${type}_host_key
+ [ ! -f $key ] && {
+ # generate missing keys
+ mkdir -p /etc/dropbear
+ [ -x /usr/bin/dropbearkey ] && {
+ /usr/bin/dropbearkey -t $type -f $key 2>&- >&- && exec $0 $*
+ } &
+ exit 0
+ }
+}; done