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SUMMARY:Anonymity via networks of mixes - Venkat Anantharam\, EECS Departm
 ent\, University of California Berkeley.
DTSTART:20100118T150000Z
DTEND:20100118T160000Z
UID:TALK22395@talks.cam.ac.uk
CONTACT:Neil Walton
DESCRIPTION:Mixes are relay nodes that accept packets arriving\nfrom multi
 ple sources and release them after variable delays to prevent an eavesdrop
 per from associating outgoing packets to their sources. We assume that eac
 h mix has a hard latency constraint. Using an entropy-based measure to\nqu
 antify anonymity\, we analyze the anonymity provided by\nnetworks of such 
 latency-constrained mixes.\nOur results are of most interest under\nlight 
 traffic conditions. A general upper bound is presented that\nbounds the an
 onymity of a single-destination mix network in\nterms of a linear combinat
 ion of the anonymity of two-stage\nnetworks. By using a specific mixing st
 rategy\, a lower bound\nis provided on the light traffic derivative of the
  anonymity of\nsingle-destination mix networks. The light traffic derivati
 ve of\nthe upper bound coincides with the lower bound for the case of\nmix
 -cascades (linear single-destination mix networks). \n\nBio:\n\nVenkat Ana
 ntharam received the B.Tech in Electronics in 1980\nfrom the Indian Instit
 ute of Technology\, Madras (IIT-M)\nand the M.A. and C.Phil degrees in Mat
 hematics and the\nM.S. and Ph.D. degrees in Electrical Engineering in\n198
 3\, 1984\, 1982 and 1986 respectively\,\nfrom the University of California
  at Berkeley (UCB).\nFrom 1986 to 1994 he was on the faculty of the School
  of\nEE at Cornell University. From 1994 he has been on the faculty of the
 \nEECS department at UCB.\n\nAnantharam received the Philips India Medal a
 nd the\nPresident of India Gold Medal from IIT-M in 1980\, and an NSF Pres
 idential\nYoung Investigator award (1988 -1993). He a co-recipient of\nthe
  1998 Prize Paper award of the IEEE Information Theory Society\n(with S. V
 erdú) and a co-recipient of the 2000 Stephen O. Rice Prize Paper\naward o
 f the IEEE Communications Theory Society\n(with N. Mckeown and J. Walrand)
 .\nHe received the Distinguished Alumnus Award from IIT-M in 2008.\nHe is 
 a Fellow of the IEEE. 
LOCATION:MR5\, CMS\, Wilberforce Road\, Cambridge\, CB3 0WB
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