公开(公告)号：US20230188359A1

公开(公告)日：2023-06-15

申请号：US17981640

申请日：2022-11-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Changhyun LEE ,  Jintae OH

IPC: H04L9/32 ,  H04L9/00 ,  G06F17/18

CPC classification number: H04L9/3247 ,  H04L9/50 ,  G06F17/18

Abstract: Disclosed herein are an apparatus and method for distributed consensus in an environment in which a fraction of Byzantine nodes is dynamically changed. The distributed consensus apparatus in a dynamic Byzantine fraction environment includes one or more processor and executable memory for storing at least one program executed by the one or more processors. The at least one program is configured to calculate a stochastic variable for the probability that a preset fraction of Byzantine nodes is changed using the probability that at least one of consensus candidate nodes corresponding to a preset consensus quorum is changed to a Byzantine node and to perform distributed consensus using the stochastic variable in the dynamic Byzantine fraction environment.

公开(公告)号：US20210152471A1

公开(公告)日：2021-05-20

申请号：US17097248

申请日：2020-11-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Changhyun LEE

IPC: H04L12/741 ,  H04L29/08 ,  H04L12/26

Abstract: A relay network system includes a plurality of relay nodes connected to each other to constitute a relay network and one or more blockchain peer nodes connected to the relay nodes. Each relay node receives at least one of a connection packet including connection request information and a block packet including block information at the user level, transmits the block packet to a connected blockchain peer node and another relay node, and updates a connection information table so that information on the connection to the blockchain peer node and relay node connected to transmit or receive the block packet corresponds to the connection packet.