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[Freedombox-discuss] Store-and-forward is a necessity

On Thu, Mar 3, 2011 at 11:35, Tony Godshall <togo at of.net> wrote:
> On Wed, Mar 2, 2011 at 12:53, Jonas Smedegaard <dr at jones.dk> wrote:
>> On Wed, Mar 02, 2011 at 03:34:18PM -0500, Jay Sulzberger wrote:
>>> And ZRTP:
>>> ?http://en.wikipedia.org/wiki/ZRTP
>> Sorry, but this is not Free Software. ?Yes, advertised as such, but try
>> actually fetch the code and it turns out it isn't - and there is no response
>> when emailing them asking nicely about it.
>> Please do prove me wrong!
>> ?- Jonas
> Ah, Phil Zimmerman. ?Creator of PGP. ?Open source -> publicity ->
> closed -> profit. ?I think I see a pattern...

OK, so ZRTP is a proposed open standard. Not a program.

Proposed RFP by Phil Zimmerman et al is here:


Phil Zimmerman et al and implement protocol in proprietary program
zphone.  Zphone FAQ at makes it clear that zphone is not open

Wikipedia indicates there are four purported free implementations[2].
I have not validated that claim.  Nor the definition of "free" in that
context.  References to "GNU ZRTP" and "libzrtp" are worth pursuing...


[1] quote from  http://www.zfone.com/faq.html

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