libzrtpcpp-dev 1.3.0-1 (i386 binary) in ubuntu karmic

 This library is an extension to the GNU RTP Stack, libccrtp,
 that offers compatibility with Phil Zimmermann's zrtp/Zfone voice
 encryption, and which can be directly embedded into telephony
 applications. The current release is based on a beta draft of the
 zrtp spec.
 .
 This package provides the header files, link libraries, and
 documentation for building applications that use libzrtpcpp.