[AVT] SRTP Question

["Steffen Fries" <steffen.fries at siemens.com>]

Hi,

I've got another question to SRTP ;-)

Within RFC3711 it is mentioned in section 3.3.1:
"...  After that number of SRTP packets have been sent
with a given (master or session) key, the sender MUST NOT send
any more packets with that key. ..." 

Further, section 8.1.1 reads:
"... The default values for the <From, To> are "from the first
observed packet" and "until further notice".  However, the 
maximum limit of SRTP/SRTCP packets that are sent under each 
given master/session key (Section 9.2) MUST NOT be exceeded...."

Does this mean, that both sender and receiver have to ensure, 
that the maximum number of packets encrypted with the same key 
is not exceeded? If yes, is the recommendation, that the 
receiver discards the packets that are received after the key 
usage has reached the maximum limit?

Ciao
	Steffen



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