<reference anchor="RFC4568" target="https://www.rfc-editor.org/info/rfc4568" xml:base="http://xml.resource.org/public/rfc/bibxml/reference.RFC.4568.xml">
<front>
<title>Session Description Protocol (SDP) Security Descriptions for Media Streams</title>
<author initials="F." surname="Andreasen" fullname="F. Andreasen"><organization/></author>
<author initials="M." surname="Baugher" fullname="M. Baugher"><organization/></author>
<author initials="D." surname="Wing" fullname="D. Wing"><organization/></author>
<date year="2006" month="July"/>
<abstract><t>This document defines a Session Description Protocol (SDP) cryptographic attribute for unicast media streams.  The attribute describes a cryptographic key and other parameters that serve to configure security for a unicast media stream in either a single message or a roundtrip exchange.  The attribute can be used with a variety of SDP media transports, and this document defines how to use it for the Secure Real-time Transport Protocol (SRTP) unicast media streams.  The SDP crypto attribute requires the services of a data security protocol to secure the SDP message.  [STANDARDS-TRACK]</t></abstract>
</front>
<seriesInfo name="RFC" value="4568"/>
<seriesInfo name="DOI" value="10.17487/RFC4568"/>
</reference>