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Details

Veröffentlichungs-Nr.

EP4727055

Anmeldetag

13. Oktober 2025

Veröffentlichung

15. April 2026

Rechtsraum

EP

IPC

H04L9/08

Abstract

The present disclosure involves methods, apparatus, and systems for processing equality testing in secure multi-party computation (MPC). In one aspect, a method includes, generating, by a first party of the secure MPC, a difference between a secret share of a first value and a secret share of a second value. During a first iteration, the difference is partitioned into N sections each including M bits. For each section, a random bit is generated, a group of 2<M> bits are generated based on the random bit, and a selected bit from the group of 2<M> bits is sent to a second party of the secure MPC based on oblivious transfer (OT) protocol. The random bits of the N sections are concatenated as an input of a second iteration. The method further includes determining whether the first value equals the second value based on performing a plurality of iterations.

Anmelder

Firmen

Beijing Zitiao Network Technology Co., Ltd.
Lemon Inc.

Land

🇨🇳 China

Fachgebiete