>>>>> "Stephen" == Stephen Kent <kent at bbn.com> writes:
Stephen> It's communication overhead, not processing overhead,
Stephen> that motivates use of SRTP. the headers for SRTP are very
Stephen> small, even compared to transport mode ESP.
You should be aware that there is a proposal being discussed at AVT in
Dallas to use DTLS as an alternative to secure RTP instead of SRTP.
There are problems with keying SRTP that have caused some to question
whether perhaps the key establishment should happen as part of the RTP
stream establishment instead of part of the session setup layer.
If this proposal is viewed favorably, it casts doubt on claims about
SRTP being different from other protocols in terms of overhead
requirements.
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