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SUMMARY:PHANTOM: A Parallel Architecture for Practical Oblivious Computati
 on - Martin Maas\, UC Berkeley
DTSTART:20130611T151500Z
DTEND:20130611T161500Z
UID:TALK45407@talks.cam.ac.uk
CONTACT:Laurent Simon
DESCRIPTION:*Abstract:*\n\nOffloading computation to an untrusted datacent
 er can leak confidential information. Adversaries with physical access -- 
 such as a malicious datacenter employee -- can probe the on-board intercon
 nect to extract secret data from a processor. Tamper-proof computing platf
 orms\, where all code is executed within a physically sealed processor and
  all data outside the processor is encrypted\, alleviate this problem only
  partially. The addresses of data that is accessed in DRAM are still visib
 le in plain-text and represent a source of information leakage.\n\nOur goa
 l is to make a processor's memory accesses "oblivious" so that adversaries
  see a completely obfuscated address trace\, and to build an oblivious pla
 tform that is practical today. To this end\, we present PHANTOM (++)\, an 
 oblivious memory controller that achieves high performance by aggressively
  exploiting memory parallelism and employing a carefully designed stall-fr
 ee architecture. We have built an FPGA-based prototype on the Convey HC-2e
 x heterogeneous computing platform and solve several challenges in mapping
  an Oblivious RAM algorithm to FPGAs running at low frequencies without st
 alling the high bandwidth memory controllers.\n\n(++) Parallel Hardware to
  make Applications Non-leaking Through Oblivious Memory\n\n*Bio:*\n\nMarti
 n Maas is a second-year PhD student at UC Berkeley\, working with Krste As
 anović and John Kubiatowicz. His research interests include managed langu
 ages\, computer architecture and operating systems. Before coming to Berke
 ley\, Martin received his undergraduate degree from the University of Camb
 ridge. He is currently completing an internship with Tim Harris at Oracle 
 Labs.
LOCATION:Lecture Theatre 2\, Computer Laboratory\, William Gates Building
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