[Resource Topic] 2021/841: MPC for $Q_2$ Access Structures over Rings and Fields

Welcome to the resource topic for 2021/841

Title:
MPC for Q_2 Access Structures over Rings and Fields

Authors: Robin Jadoul, Nigel P. Smart, Barry Van Leeuwen

Abstract:

We examine Multi-Party Computation protocols in the active-security-with-abort setting for Q_2 access structures over small and large finite fields F_p and over rings Z_{p^k}. We give general protocols which work for any Q_2 access structure which is realised by a multiplicative Extended Span Program. We generalize a number of techniques and protocols from various papers and compare the different methodologies. In particular we examine the expected communication cost per multiplication gate when the protocols are instantiated with different access structures.

ePrint: https://eprint.iacr.org/2021/841

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