Projects / ZRTP Protocol Library

ZRTP Protocol Library

ZRTP Protocol Library is an implementation of Phil Zimmermann's ZRTP protocol, created based on and interoperable with Zfone beta 2. Combined with the GNU RTP Stack (ccrtp), this offers the ability to create communication services that natively support the ZRTP protocol.

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Recent releases

  •  08 Sep 2013 16:47

    Release Notes: Essential fixes for CVE-2013-2222/2223. Better support for both OpenSSL and GnuTLS. Paranoid mode support. Improved support for mingw builds. Many additional improvements since the 2.0.0 release.

    •  12 Jun 2011 17:22

      Release Notes: Updated to build using ccrtp 2.x and GNU uCommon 5.x libraries.

      •  07 Dec 2010 19:35

        Release Notes: Support for building the library using the Android NDK has been added, as well as C wrappers to make it easy to build with pjsip. Fixes for race conditions and better support for multi-stream mode were also added. Updated for the latest inter-operable ZRTP specs. Requires ccrtp 1.7.2 (or later), which fixes an issue with padded SRTP packets.

        •  08 Feb 2009 07:12

          Release Notes: The library was upgraded for changes in draft 13 of the IETF ZRTP specification.

          •  20 Jan 2009 19:14

            Release Notes: This release implements the new Key Derivation Function as defined by ZRT spec 12. The protocol identifier has been increased to 1.10.

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