The DHT system for identities is cool, but the thing that gets me is that they don't have support for SRTP with ZRTP, only SRTP with SDES. There's no perfect forward secrecy, and a bunch of other features that ZRTP has. https://www.silentcircle.com/products-and-solutions/technolo...
Yes, that's true. A more comparable thing to Signal is Matrix [1] and it's client Riot [2]. Theoretically, it has perfect forward secrecy. It's not as distributed as Ring is, but there is no centralized server as in Signal either. Riot is also in F-Droid. So while not a GNU member, I find it sufficiently open and free. A totally distributed approach with forward secrecy is Tox [3]. It needs a good code audit, though.…
Just saying.