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SUMMARY:Cyberdice 2: Peer-to-peer gambling in presence of cheaters - Frank
  Stajano\, Computer Laboratory
DTSTART:20070720T150000Z
DTEND:20070720T153000Z
UID:TALK7715@talks.cam.ac.uk
CONTACT:Markus Kuhn
DESCRIPTION:A bunch of participants play a game where each one pays an equ
 al share in order to play and then one of them is selected at random and g
 ets all the money on the table. Except there's no table: it's all done jus
 t with bit strings over an unreliable\, non-confidential\, non-authentic\,
  non-anything network\, where any message can be overheard\, intercepted\,
  delayed\, rewritten or deleted (imagine playing this over USENET news). A
 nd all the other participants may well be crooks. Third parties (such as b
 anks or more precisely escrow agents) may help convert between money and b
 it strings but only according to strictly deterministic criteria -- they w
 on't act as casinos and do the random selection of the winner for you. And
  some players may not trust some of these third parties.\n\nCyberdice is a
  game and payment protocol to address the above constraints.\n\nThis is a 
 follow-up to "last week's talk":http://talks.cam.ac.uk/talk/index/7709. It
 's still work in progress and you are once again most welcome to come and 
 joyfully shoot holes in it.
LOCATION:Computer Laboratory\, William Gates Building\, Room FW11
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