Comment Re:info (Score 1) 174
It's really not that hard at all.
http://en.wikipedia.org/wiki/Off-the-Record_Messaging#Authentication
and it comes with a very good implementation and pedigree,
https://en.wikipedia.org/wiki/ZRTP
Here's a video demo of ZRTP in use:
https://www.youtube.com/watch?v=udBBDHT-_UA
So as far as the user is concerned, there's not reason it can't be dead simple.