From 017fa931577631619777f32e3476c663773af274 Mon Sep 17 00:00:00 2001
From: Hauro <hauro@chaospott.de>
Date: Sun, 5 Apr 2015 13:46:08 +0200
Subject: [PATCH] Filter invalid keys

---
 update-keydb.sh | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/update-keydb.sh b/update-keydb.sh
index cf89f6f..25a80e5 100755
--- a/update-keydb.sh
+++ b/update-keydb.sh
@@ -22,6 +22,13 @@ rm -f ${outfile}
 find "${dest}/keys" -name '*.pub' | sort | \
 while read keyfile
 do
+valid_key=$(ssh-keygen -l -f ${keyfile})
+if [ "$?" -eq "0" ]; then
+if [ $(echo "${valid_key}" | cut -d" " -f1) -ne "4096" ]; then
+echo "Key size of key ${keyfile} not equal to 4096. Not adding it to key database." >&2
+continue
+fi
+fi
 printf "command=\"/usr/sbin/foodoor.sh ${action}\",no-port-forwarding,no-X11-forwarding,no-agent-forwarding " >> ${outfile}
 cat "${keyfile}" >> ${outfile}
 done