diff --git a/installation/ca.sh b/installation/ca.sh
new file mode 100644
index 0000000..1b4ba2e
--- /dev/null
+++ b/installation/ca.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+sudo openssl genrsa -out /root/ca.key 4096
+sudo openssl req -x509 -new -nodes -key /root/ca.key -sha256 -days 1024 -out /root/ca.crt -subj "/C=CH/ST=Zurich/L=Zurich/O=InterstellarNet/CN=INTERSTELLAR"
+sudo cp ca.crt /usr/local/share/ca-certificates/
+sudo update-ca-certificates