Robert Boschgmbh

Robert Bosch Gmbh

Sebastian Becker

Sven Trieflinger

Jorge Guajardo Merchan

Shalabh Jain

Qingji Zheng

Vadim Raskin

Hanna Modica

Volker Suschke

A computer-implemented method for providing a distributed data processing service for performing a secure multiparty computation of a function on at least first and second items of private input data using at least a first and a second computing engine communicatively coupled via a communication network.

Distributed secure multi party computation

A method for implementing a secure multiparty computation protocol between a plurality of parties for a multiparty computation includes performing an offline phase of an SPDZ protocol for each of the parties participating in the multiparty computation. A secret share redistribution phase is then performed wherein the secret shares of the parties are redistributed to a subset of the parties. A secret share recombination phase is performed during which the subset of the parties recombines the redistributed secret shares to recover the secret shares of the parties not in the subset. An online phase of the SPDZ protocol is then performed during which the function is computed with respect to the private inputs of the parties and using the secret shares of all the parties.

Method and system for fault tolerant and secure multiparty computation with SPDZ

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Sebastian Becker