[tor-talk] Using Mumble with Tor

[adrelanos]

Nathan Freitas:
> On 07/14/2013 10:40 PM, adrelanos wrote:
>> There is no such thing such as OTR for voice, video or files.
> 
> If you are on the otr-dev list, you might have seen some discussion on
> improvised support for a data channel in OTR v3, to use with the ability
> to generate an "extra" symmetric key:
> 
> "OTR version 3 defines an additional symmetric key that can be derived
> by the communicating parties to use for application-specific purposes,
> such as file transfer, voice encryption, etc. When one party wishes to
> use the extra symmetric key, he or she creates a type 8 TLV attached to
> a Data Message (see above). The key itself is then derived using the
> same "secbytes" used to compute the encryption and MAC keys used to
> protect the Data Message. The extra symmetric key is derived by
> calculating h2(0xFF) and keeping the entire 256 bits, using the same
> definition of h2 as above."
> 
> http://www.cypherpunks.ca/otr/Protocol-v3-4.0.0.html
> 
> We are actively developing this as part of our OTR implementation in
> Gibberbot for Android, v12, and have most of it working
> (https://github.com/guardianproject/Gibberbot/pulls).
> 
> Our plan is to use this to implement media sharing, and even a
> push-to-talk feature, that is all securely tunneled through OTR.
> 
> So, in short, there will soon be such a thing as OTR for voice, video
> and files. :)
> 
> +n

No, I wasn't aware on those good news. Thanks for sharing!