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UID:www.tcs.tifr.res.in/event/295
DTSTAMP:20230914T125918Z
SUMMARY:Broadcasting Private Message Securely
DESCRIPTION:Speaker: László Czap (EPFL IC IIF ARNI\nBC 048 (Bâtiment BC)
 \nStation 14\nCH-1015 Lausanne\nSwitzerland)\n\nAbstract: \nWireless commu
 nication channels are easier to eavesdrop and harder to secure – even to
 wards unintentional eavesdrop- pers. As an example consider a sender\, Ali
 ce\, who wants to send private messages to multiple (say three) receivers\
 , Bob\, Calvin and David\, within her transmission radius\, and assume pub
 lic feedback from the receivers to Alice. When Alice broadcasts a message 
 W1 intended for Bob\, Calvin and David should also try to overhear\, as th
 e side information they possibly collect can enable Alice to make her foll
 owing broadcast transmissions more efficient\; but then\, this collected s
 ide information would allow Calvin and David to learn parts of Bob’s mes
 sage. Even worse\, Calvin and David could try to put together the parts th
 ey overheard\, to extract increased information about Bob’s message. Can
  we\, in such a setting\, keep the message for each user information theor
 etically secure from the other users\, even if these collaborate? Moreover
 \, can we do so\, when the users can only communicate through shared wirel
 ess broadcast channels?\n
URL:https://www.tcs.tifr.res.in/web/events/295
DTSTART;TZID=Asia/Kolkata:20120803T150000
DTEND;TZID=Asia/Kolkata:20120803T163000
LOCATION:A-212 (STCS Seminar Room)
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