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SUMMARY:How to veto anonymously under surveillance? - Piotr Zielinski\, In
 ference Group
DTSTART:20060823T130000Z
DTEND:20060823T140000Z
UID:TALK5139@talks.cam.ac.uk
CONTACT:Ryan Prescott Adams
DESCRIPTION:In a small room\, a number of the Republic Security Council de
 legates gathered around a table to decide whether to invade an enemy plane
 t. One delegate wishes to *veto* the measure\, but worries such a move mig
 ht jeopardize the relations with some other member states. Can he successf
 ully veto the proposal *without revealing his identity*? \n\nThe delegate'
 s job is not easy.  *All communication is public*\, so everybody can hear 
 everything he says.  There are no preestablished secret keys he could use 
 to encrypt his messages.  Besides\, any such messages would reveal his ide
 ntity to the receiver anyway.  \n\nDespite those difficulties *there is a 
 way* for the delegate to place his veto anonymously\, without revealing hi
 s identity.  In this talk\, I will present "my":http://www.cl.cam.ac.uk/~p
 z215/ recent work with "Feng Hao":http://www.cl.cam.ac.uk/~fh240/\, which 
 shows how to do it.  \n\n"A 2-round anonymous veto protocol: paper":http:/
 /www.cl.cam.ac.uk/~fh240/pdf/avnet.pdf\n\n"How to veto anonymously under s
 urveillance: new slides":http://www.cl.cam.ac.uk/~pz215/files/avnet-infere
 nce-talk.pdf\n\n"A 2-round anonymous veto protocol: old conference slides"
 :http://www.cl.cam.ac.uk/~fh240/pdf/avnet_talk.pdf
LOCATION:Ryle Seminar Room\, Cavendish Laboratory
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