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Deim Seminar

Title

Turbospeedz: Double Your Online SPDZ! Improving SPDZ using Function Dependent Preprocessing

Conferenciant

Aner Ben-Efraim

Professor/a organitzador/a

Oriol Farrs Ventura

Institution

Ariel University

Date

09-05-2019 12:00

Summary

Secure multiparty computation allows a set of mutually distrusting parties to securely compute a function of their private inputs, revealing only the output, even if some of the parties are corrupt. One of the most popular and efficient protocols for secure multiparty computation working in this model is the SPDZ protocol (Damgaard et al., CRYPTO 2012). In this work, we show that by using a function dependent preprocessing protocol, the online communication of the SPDZ protocol can be brought down significantly, almost by a factor of 2, and the online computation is often also significantly reduced. It is a joint work with Michael Nielsen and Eran Omri that will be presented in ACNS 2019.

Place

Lab 231

Language

Angls