Hi ,
As a part of my MS project I proposed a 3-party authentication protocol which 
can be used in SIP too. for SIP. The proxy server utilizes this protocol to  
authenticate the UC's Invite,using the Registrar server. Now, I have to 
estimate the totoal overhead of the scheme on a normal  SIP call.  I searched 
dozens of  SIP, UMTS, GSM related papers to find a simulator or emulator which 
could be used to to achive the goal but I couldn't get any solutions as I need 
to consider execution of the RSA,AES and SHA on the agent's processor, I also 
need the solution to answer me with not too much programming due to my time 
constraints. I  browsed the Resirocate  project docs but I don't think then can 
answer me in time. I am also not sure whether SIPp, MS LIve communication 
server and SERcan help me? Could you please  suggest  me  any rapid solutions? 
Any simulation techniques?any piece of software or programmining interface? By 
the way I am a little familiar with opnet as I did a tiny
 project with it. Doest it help me?
 
Thanks in advance.
Samira. 
       
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