公开(公告)号：US11736280B2

公开(公告)日：2023-08-22

申请号：US16887170

申请日：2020-05-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Changho Hong ,  Nayoung Kim ,  Osung Kwon ,  Younchang Jeong ,  Se Wan Ji ,  Eun Ji Kim ,  Seok Kim ,  Jingak Jang ,  Daesung Kwon

IPC: H04L9/08 ,  H04B10/70

CPC classification number: H04L9/0852 ,  H04B10/70 ,  H04L9/0819

Abstract: A quantum entity authentication apparatus and method. The quantum entity authentication apparatus includes a quantum state preparation unit for preparing an authentication quantum state that is generated based on an authentication key previously shared with an entity, a quantum channel verification unit for transmitting a quantum state, generated by performing an operation using a prestored unique operator on the authentication quantum state, to a quantum measurement device, and for verifying security of a quantum channel by using a result of Bell measurement and the authentication quantum state, the result of Bell measurement being revealed by the quantum measurement device for the quantum state, and a quantum entity authentication unit for, when the security of the quantum channel is verified, authenticating the entity using the result of the Bell measurement and the unique operator.

公开(公告)号：US11316677B2

公开(公告)日：2022-04-26

申请号：US17069073

申请日：2020-10-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Haeng-Seok Ko ,  Se Wan Ji ,  Younchang Jeong ,  Osung Kwon ,  Seok Kim ,  Eun Ji Kim ,  Changho Hong ,  Jingak Jang ,  Daesung Kwon

IPC: H04L9/06 ,  H04L9/08 ,  H04L9/14 ,  H04L9/12

Abstract: A quantum key distribution (QKD) node apparatus and a QKD method therein. The QKD node apparatus may include a QKD module for generating quantum keys and quantum key IDs, a quantum key synchronization management module for storing the quantum keys and the quantum key IDs as outbound and inbound quantum keys in a distributed manner and sharing the outbound and inbound quantum keys with a second QKD node apparatus, and a quantum key orchestration module for delivering a master key and a master key ID to a secure application connected therewith in response to a request for the master key with the ID of a second secure application and delivering a packet including the master key encrypted with the outbound quantum key shared with the second QKD node apparatus, the master key ID, and a quantum key ID, to the second QKD node apparatus.

公开(公告)号：US11187578B1

公开(公告)日：2021-11-30

申请号：US16933261

申请日：2020-07-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seok Kim ,  Eun Ji Kim ,  Younchang Jeong ,  Osung Kwon ,  Changho Hong ,  Se Wan Ji ,  Haeng-Seok Ko ,  Jingak Jang ,  Daesung Kwon

IPC: G01J1/44

Abstract: A single-photon detection method and apparatus. The single-photon detection method detects a single photon using a single-photon detection apparatus, and includes generating an output signal through a photon detector by receiving a light signal as an input, generating a negative voltage comparison result through a negative voltage comparator by receiving the output signal as an input, and generating a photon detection result based on the negative voltage comparison result.