mqgp - MQTT PGP Security Model

[ctm]

I have started a conceptual design on GitHub at 

https://github.com/ctmalan/mqgp

The model will be based on GPG and caters for changing servers and security models.  The root topic can also be encrypted if you are someone like "TheBankofEnland/BranchLondon/Security/" or "Chernobyl/Reactor1/Coolingplant/"  :-)

Any comments are welcome at this stage.

One of the use cases is where a vendor sells a gateway.  The new owner registers the purchase and can take over the device and implement an appropriate security model.

I must still confirm if the model will work without any security implemented?

c-: