<div dir="ltr">Is anyone attempting to implement the ZRTP cryptographic key-agreement protocol (a method of encrypting voice data using self-generated keys, rather than keys from certificate authorities).<br>Some softphones such as X-Lite already implement it.<br>
There is apparently an open source library at <a href="ftp://ftp.gnu.org/gnu/ccrtp/libzrtpcpp-0.9.0.tar.gz">ftp://ftp.gnu.org/gnu/ccrtp/libzrtpcpp-0.9.0.tar.gz</a></div>