The ZRTP Internet Draft - Approved for publication as an RFC
ZRTP: Media Path Key Agreement for Unicast Secure RTP
A proposal for a public standard
Phil Zimmermann, Alan Johnston, and Jon Callas have submitted an Internet Draft to the IETF for the ZRTP protocol, which is used by Zfone to set up the cryptographic key agreement. Alan co-authored RFC 3261 which defines the SIP standard, and Jon, now at Apple, is former CTO of PGP Corp.
Our draft-zimmermann-avt-zrtp is now approved by the IESG for publication as an RFC. Here's their 25 June 2010 official announcement.
Here's what we last submitted to the IETF
The ZRTP Internet Draft as last submitted on the IETF web site:
- http://tools.ietf.org/html/draft-zimmermann-avt-zrtp
This link also contains older obsolete drafts that can be individually selected at the top of the page, and colorful tools to review the changes between drafts.
After the RFC Editors do their final review of the draft, they allow us to make one more round of corrections, called the AUTH48 changes, and then it becomes a real RFC. We have here the expected AUTH48 changes:
- Diffs of expected AUTH48 changes
- HTML of full draft (with expected AUTH48 changes)
SDK for developers to implement the ZRTP protocol
We also have a software development kit to help you implement ZRTP in your VoIP application. Click here to see the Zfone libZRTP SDK documentation.