OTR is designed to help Alice to repudiate her messages when an archive of her conversation is taken by FBI from Bob's computer. Alice might say: "Look, anyone

OTR is designed to help Alice to repudiate her messages when an archive of her conversation is taken by FBI from Bob's computer. Alice might say: "Look, anyone could sign those messages as the keys were in the clear!" Judge will reply: "Unfortunately, the collected evidence is quite believable and we have a couple of parallel constructions in place, so you don't have a chance." I don't believe in a technical possibility to disprove someone in a court of law. Law is not mathematically defined, but interpreted quite frivolously depending on how much out of favor with the state you are. I'd rather focus on better protecting one's identity and carefully choosing who to speak with in the first place. I'm afraid, OTR is just wishful thinking. (However, technically it's pretty cool.)