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What and Who
Title:Conclave: Secure Multi-Party Computation on Big Data
Speaker:Nikolaj Volgushev
coming from:Boston University
Speakers Bio:
Event Type:SWS Colloquium
Visibility:SWS, RG1, MMCI
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Level:AG Audience
Language:English
Date, Time and Location
Date:Wednesday, 15 May 2019
Time:10:30
Duration:90 Minutes
Location:Saarbrücken
Building:E1 5
Room:029
Abstract
Secure Multi-Party Computation (MPC) allows mutually distrusting parties to run joint computations without revealing private data.

Current MPC algorithms scale poorly with data size, which makes MPC on “big data” prohibitively slow and inhibits its practical use.
Many relational analytics queries can maintain MPC’s end-to-end security guarantee without using cryptographic MPC techniques
for all operations. Conclave is a query compiler that accelerates such queries by transforming them into a combination of data-parallel,
local cleartext processing and small MPC steps. When parties trust others with specific subsets of the data, Conclave applies new
hybrid MPC-cleartext protocols to run additional steps outside of MPC and improve scalability further. Our Conclave prototype generates
code for cleartext processing in Python and Spark, and for secure MPC using the Sharemind and Obliv-C frameworks. Conclave scales
to data sets between three and six orders of magnitude larger than state-of-the-art MPC frameworks support on their own. Thanks to
its hybrid protocols and additional optimizations, Conclave also substantially outperforms SMCQL, the most similar existing system.

Contact
Name(s):Annika Meiser
Phone:93039105
EMail:--email address not disclosed on the web
Video Broadcast
Video Broadcast:YesTo Location:Kaiserslautern
To Building:G26To Room:111
Meeting ID:SWS Space 2 (6312)
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Created:
Annika Meiser/MPI-SWS, 05/13/2019 11:03 AM
Last modified:
Uwe Brahm/MPII/DE, 05/15/2019 07:01 AM
  • Annika Meiser, 05/13/2019 11:06 AM -- Created document.