公开(公告)号：US20230208659A1

公开(公告)日：2023-06-29

申请号：US17965655

申请日：2022-10-13

Applicant: POSTECH Research and Business Development Foundation

Inventor： Chanik PARK ,  Yong Rae JO

IPC: H04L9/00 ,  H04L9/40

CPC classification number: H04L9/50 ,  H04L63/1466

Abstract: Disclosed is a blockchain apparatus and method for mobile edge computing, the blockchain method comprising: receiving a user transaction from clients associated with a first edge chain, determining an execution order for transactions, processing the transactions according to the transaction processing order, reading and updating data on the first edge chain or reading and updating the data on a main chain of the main network depending on presence or absence of locality in the user transaction, creating an edge chain block by collecting the results of a batch of processed transaction, propagating the edge chain block to all local BSP auditor nodes associated with the first edge chain and all BSP servers in the main network.

公开(公告)号：US20250023723A1

公开(公告)日：2025-01-16

申请号：US18620977

申请日：2024-03-28

Applicant: POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION

Inventor： Chanik PARK ,  Moon Hyeon CHUNG ,  Dong Hyeon RYU

IPC: H04L9/08

Abstract: A blockchain-based trusted setup method for zero-knowledge proof (ZKP), performed by a specific node of a blockchain network, may comprise: transmitting a first hash value of a first common reference string (CRS) to a first node; receiving a second hash value of a second CRS from the first node; transmitting the second hash value to a second node; and receiving a third hash value of a third CRS from the second node, wherein the second CRS is generated by the first node encrypting or hiding the first CRS acquired from a public storage through a CRS update module using a secret key of the first node, and the third CRS is generated by the second node using the second CRS acquired from the public storage and a secret key of the second node.

公开(公告)号：US20220083656A1

公开(公告)日：2022-03-17

申请号：US17473954

申请日：2021-09-13

Applicant: POSTECH Research and Business Development Foundation

Inventor： Chanik PARK ,  Jeong Hyeon MA

IPC: G06F21/55 ,  G06F16/23 ,  G06F11/07

Abstract: A Byzantine fault tolerance method in a blockchain platform, which is related to an audit transaction analysis method for analyzing operation of a blockchain ordering service, may comprise: determining, through an audit transaction analysis submitted by each blockchain node included in at least one received block, a consensus level of the received block; and detecting a malfunction and a malicious attack of an ordering service on the basis of a consensus level update delay time and an error analysis of an audit transaction analysis process in the blockchain node.