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[liberationtech] Ostel: encrypted phone calls

Pavol Luptak wilder at trip.sk
Wed Jun 5 11:19:48 PDT 2013


On Wed, Jun 05, 2013 at 07:12:22PM +0200, KheOps wrote:
> Hi all,
> 
> Just came accross that: https://ostel.co/
> 
> Open source software for encrypted calls, with a client that apparently
> runs on a lot of platforms.
> 
> Anyone ever used/reviewed it already?

I used it with my Android SIP clients (CSIPSimple, Acrobits Softphone),
It should be completely based on opensource FreeSWITCH 
http://www.freeswitch.org/ with enabled ZRTP support. 

CSIPSimple + FreeSWITCH is probably the best opensource ZRTP solution for
end-to-end encrypted calls.

BTW, what do you think about security of Threema http://threema.ch/en/? 
Now they have out Android version and it is very user-friendly, unfortunately 
it's still closed/proprietary software, so I am not sure about security.

Pavol
-- 
______________________________________________________________________________
[Pavol Luptak, Nethemba s.r.o.] [http://www.nethemba.com] [tel: +421905400542]


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