slackbuilds/libraries/libsrtp

libSRTP is the Open Source Secure RTP library from Cisco Systems, Inc. RTP is
the Real-time Transport Protocol, an IETF standard for the transport of
real-time data such as telephony, audio, and video, defined by RFC 3550.
Secure RTP (SRTP) is an RTP profile for providing confidentiality to RTP data
and authentication to the RTP header and payload. SRTP is an IETF Standard,
defined in RFC 3711, and was developed in the IETF Audio/Video Transport (AVT)
Working Group. This library supports all of the mandatory features of SRTP,
but not all of the optional features.