@misc{rfc6904,
    series =    {Request for Comments},
    number =    6904,
    howpublished =  {RFC 6904},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC6904},
    url =       {https://www.rfc-editor.org/info/rfc6904},
    author =    {Jonathan Lennox},
    title =     {{Encryption of Header Extensions in the Secure Real-time Transport Protocol (SRTP)}},
    pagetotal = 15,
    year =      2013,
    month =     apr,
    abstract =  {The Secure Real-time Transport Protocol (SRTP) provides authentication, but not encryption, of the headers of Real-time Transport Protocol (RTP) packets. However, RTP header extensions may carry sensitive information for which participants in multimedia sessions want confidentiality. This document provides a mechanism, extending the mechanisms of SRTP, to selectively encrypt RTP header extensions in SRTP. This document updates RFC 3711, the Secure Real-time Transport Protocol specification, to require that all future SRTP encryption transforms specify how RTP header extensions are to be encrypted.},
}