We properly presume your network to be hostile and malicious to security. You've declared it so. Therefor everything is encrypted and secured. Your hostile netw

We properly presume your network to be hostile and malicious to security. You've declared it so. Therefor everything is encrypted and secured. Your hostile network is no different than a hostile network of a small country bent on attacking the security of the communication. So feel free to have insecure communication provided you control all devices on the network. It will still be insecure.