diff -r dd959601e67a -r 0a3103cd825d runtime/Stunnel.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/runtime/Stunnel.py	Tue Oct 23 13:36:07 2018 +0200
@@ -0,0 +1,18 @@
+import os
+from binascii import hexlify
+
+restart_stunnel_cmdline = ["/etc/init.d/S50stunnel","restart"]
+
+def pskgen(ID, pskpath):
+    secretstring = hexlify(os.urandom(256))
+    pskstring = ID+":"+secretstring
+    with open(pskpath, 'w') as f:
+        f.write(pskstring)
+    call(restart_stunnel_cmdline)
+
+def ensurepsk(ID, pskpath):
+    # check if already there
+    if not os.path.exists(pskpath):
+        # create if needed
+        pskgen(IS, pskpath)
+