@misc{rfc4568,
    series =    {Request for Comments},
    number =    4568,
    howpublished =  {RFC 4568},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC4568},
    url =       {https://www.rfc-editor.org/info/rfc4568},
    author =    {Flemming Andreasen and Dan Wing and Mark Baugher},
    title =     {{Session Description Protocol (SDP) Security Descriptions for Media Streams}},
    pagetotal = 44,
    year =      2006,
    month =     jul,
    abstract =  {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{]}},
}