Comment Re:I don't understand this reasoning at all (Score 1) 123
Your locig fails as soon as with ROT13 - not better than clear text.
Since the server never hands out the same prekey twice (and the client would never accept the same prekey twice), we are able to provide forward secrecy in a fully asynchronous environment.
PFS only if you trust the server. Haven't we seen the "trust the server"-concept a few times too much lately?
If a subordinate asks you a pertinent question, look at him as if he had lost his senses. When he looks down, paraphrase the question back at him.