MUTE and Solving the key exchange problem

Frank Braun has just released an alpha of his MUTE - secure messaging system. This Prague 2015 Hacker Conference slide presentation included a very interesting section of how MUTE tries "Solving the key exchange problem". Here is a link to details and his slides. He welcomes positive criticism. https://github.com/mutecomm/mute/blob/master/doc/keyexchangeproblem.md WW