[asterisk-users] SRTP vs ZRTP in Asterisk

[Tim Panton]

On 26 Mar 2007, at 22:32, Michael Graves wrote:

> Hi All,
>
> I've been reading about Phil Zimmermann's ZRTP encryption scheme for
> SIP clients. This seems attactive but I don't use soft phones. I'm
> guessing that we'd need ZRTP support in Asterisk in
> order to use it to secure calls from hard phones.
>
> There seem to be issues with SRTP key exhange between various devices.
> So much so that the IETF is working on a standardization project.  
> ZRTP,
> which is one of the proposals before the
> IETF,  overcomes this. Since Zimmermann has open sourced the  
> protocol I
> would hope that it could be implemented in Asterisk without too much
> trouble.
>
> Does the current work on SRTP extend into ZRTP?

At Etel I heard Phil Zimmermann say that he had a working implementation
of ZRTP for asterisk in the lab.

What was less clear was how/when this might be released.

Tim Panton

www.mexuar.net
www.westhawk.co.uk/