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Paper 2016/542

MPC-Friendly Symmetric Key Primitives

Lorenzo Grassi and Christian Rechberger and Dragos Rotaru and Peter Scholl and Nigel P. Smart

Abstract

We discuss the design of symmetric primitives, in particular Pseudo-Random Functions (PRFs) which are suitable for use in a secret-sharing based MPC system. We consider three different PRFs: the Naor-Reingold PRF, a PRF based on the Legendre symbol, and a specialized block cipher design called MiMC. We present protocols for implementing these PRFs within a secret-sharing based MPC system, and discuss possible applications. We then compare the performance of our protocols. Depending on the application, different PRFs may offer different optimizations and advantages over the classic AES benchmark. Thus, we cannot conclude that there is one optimal PRF to be used in all situations.

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Metadata
Available format(s)
PDF
Category
Secret-key cryptography
Publication info
Published elsewhere. ACM CCS 2016
DOI
10.1145/2976749.2978332
Contact author(s)
nigel @ cs bris ac uk,Peter Scholl @ bristol ac uk,dragos rotaru @ bristol ac uk,lorenzo grassi @ iaik tugraz at,Christian Rechberger @ iaik tugraz at
History
2016-08-05: last of 3 revisions
2016-05-31: received
See all versions
Short URL
https://ia.cr/2016/542
License
Creative Commons Attribution
CC BY
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