公开(公告)号：US20220141000A1

公开(公告)日：2022-05-05

申请号：US17430507

申请日：2019-02-12

Applicant: NEC Corporation

Inventor： Hikaru TSUCHIDA ,  Toshinori ARAKI ,  Kazuma OHARA ,  Takuma AMADA

IPC: H04L9/08 ,  H04L9/00

Abstract: An information processing apparatus that performs bit embedding processing by four-party MPC using 2-out-of-4 replicated secret sharing stores a seed to generate a random number used when performing an operation concerning shares, generates, by using the seed, share reconstruction data for reconstructing a share used when performing bit embedding, and constructs a share for bit embedding by using at least the share reconstruction data.