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SUMMARY:Distributed Decentralised Event Flow Control - David Evans (Comput
 er Laboratory)
DTSTART:20100323T143000Z
DTEND:20100323T153000Z
UID:TALK23147@talks.cam.ac.uk
CONTACT:Tom Playford
DESCRIPTION:<b>Slides</b>: <a href="http://www.cl.cam.ac.uk/research/srg/o
 pera/meetings/attachments/2010_03_23_DDEFC.pdf">available</a>.\n\n\nEvent-
 based systems are very useful when event producers\, consumers\, and proce
 ssors are distributed\, perhaps hosted by different entities where each is
  its own administrative domain.  In the past we have advocated deontic log
 ic to express policies that govern the sharing of data between such entiti
 es.  Last week David Eyers introduced the DEFCon model which can provide i
 nformation flow control within one organisation.  Here I will present some
  ideas about extending this across organisation boundaries\, including how
  one might interpret security tags (and labels) in this context\, how tags
  and labels relate to deontic agreements between organisations\, consequen
 t influence of tagged event transmission on the state of compliance\, and 
 what an implementation within SBus might look like.\n\n
LOCATION:Room FW11\, Computer Laboratory\, William Gates Building
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