公开(公告)号：US11494403B2

公开(公告)日：2022-11-08

申请号：US16817961

申请日：2020-03-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Chang Hyun Lee ,  Sung Kee Noh ,  Hwan Jo Heo ,  Nam Seok Ko

IPC: G06F16/20 ,  G06F16/27 ,  G06F16/23 ,  G06F16/22

Abstract: An off-chain data storage method and apparatus for supporting the integrity and capacity scalability of a data object stored in an off-chain storage. The off-chain data storage method includes collecting a plurality of transactions for a plurality of data objects, creating a root transaction on the basis of a Merkle root of a Merkle tree created based on the collected transactions, and storing the root transaction in a blockchain storage.

公开(公告)号：US11277385B2

公开(公告)日：2022-03-15

申请号：US16261620

申请日：2019-01-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hwan Jo Heo

IPC: H04L29/06 ,  H04L12/947 ,  H04L12/24 ,  H04L49/25 ,  H04L41/06

Abstract: Disclosed is a method of operating a software-defined network (SDN) controller located in a decentralized SDN including a plurality of SDN switches and a plurality of SDN controllers, the method including receiving a transaction including network event information from at least one SDN switch of the plurality of SDN switches, determining a block generation entity with at least one other SDN controller based on a consensus algorithm, and, when the SDN controller is determined as the block generation entity, generating a block including the transaction and propagating the block to the at least one other SDN controller and the plurality of SDN switches. Also, a corresponding method of operating a SDN switch is disclosed.

公开(公告)号：US09197568B2

公开(公告)日：2015-11-24

申请号：US14060459

申请日：2013-10-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Nam Seok Ko ,  Hwan Jo Heo ,  Sung Kee Noh ,  Sung Jin Moon ,  Woo Sug Jung ,  Byung Ho Yae ,  Tae Soo Chung ,  Jong Dae Park

IPC: H04L12/851

CPC classification number: H04L47/24

Abstract: Disclosed is a Quality of Service (QoS) providing method and apparatus in a software-defined networking (SDN) based network, the QoS providing method including receiving a first packet of a predetermined flow, searching for forwarding information corresponding to the packet and QoS rule information corresponding to the packet in a forwarding table and a QoS rule table, respectively, transmitting the packet to a controller if the forwarding information and the QoS rule information do not exist in the forwarding table and the QoS rule table, and generating a flow entry corresponding to the packet in a flow learning table based on forwarding information and QoS rule information that are received from the controller, thereby efficiently providing QoS.

Abstract translation: 本发明公开了一种基于软件定义网络（SDN）的网络中的服务质量（QoS）提供方法和装置，所述QoS提供方法包括接收预定流量的第一分组，搜索对应于分组的转发信息和QoS规则 如果在转发表和QoS规则表中不存在转发信息和QoS规则信息，则将转发表中的分组对应的信息和QoS规则表分别发送到控制器，并且生成流入口 对应于基于从控制器接收的转发信息和QoS规则信息的流学习表中的分组，由此有效地提供QoS。

公开(公告)号：US11750404B2

公开(公告)日：2023-09-05

申请号：US17088998

申请日：2020-11-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hwan Jo Heo ,  Hyun Jin Lee

IPC: H04L9/32 ,  H04L9/08

CPC classification number: H04L9/3255 ,  H04L9/0825 ,  H04L9/0838 ,  H04L9/0891 ,  H04L9/3257

Abstract: A decentralized group signature method for an issuer-anonymized credential system includes (a) an initial system setup operation of defining elements of a group signature method and information that is generated and shared by each group member, (b) an initial group member setup operation, (c) a group member participation operation of adding a new group member to a group, (d) a group signature operation of putting a group signature on a specific message, (e) an operation of verifying the group signature, (f) an operation of removing anonymity from a group signature for a specific group member with agreement of group members, and (g) an operation of revoking a specific group member with agreement of the group members. Exclusive authority of a group manager is distributed to the group members.

公开(公告)号：US11640376B2

公开(公告)日：2023-05-02

申请号：US16776737

申请日：2020-01-30

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hwan Jo Heo ,  Sung Kee Noh ,  Chang Hyun Lee ,  Nam Seok Ko

IPC: G06F16/20 ,  G06F16/182 ,  G06F16/13 ,  H04L9/06

Abstract: Provided are an electronic device and method for managing a decentralized identifier (DID) and more specifically a device and method for managing a DID by giving authority over the DID to a user according to a priority level selected by the user.

公开(公告)号：US09621620B2

公开(公告)日：2017-04-11

申请号：US13941083

申请日：2013-07-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Woo Sug Jung ,  Jong Dae Park ,  Tae Soo Chung ,  Byung Ho Yae ,  Sung Kee Noh ,  Sung Jin Moon ,  Nam Seok Ko ,  Hwan Jo Heo

IPC: G06F15/16 ,  H04L29/08

CPC classification number: H04L67/02 ,  H04L67/1002 ,  H04L67/1029 ,  H04L67/2852

Abstract: The present invention provides content providing apparatus and method and a content providing system which maintains a compatibility with an IP network and deliver a content with a complete distributed architecture excluding the content synchronizing process and the request routing process which delivers the content.