公开(公告)号：US20210372851A1

公开(公告)日：2021-12-02

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.

公开(公告)号：US20240421985A1

公开(公告)日：2024-12-19

申请号：US18378295

申请日：2023-10-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： O-Sung KWON ,  Jin-Gak JANG ,  Haeng-Seok KO ,  Dae-Sung KWON ,  Youn-Chang JEONG ,  Se-Wan JI ,  Seok KIM ,  Chang-Ho HONG

IPC: H04L9/08

Abstract: Disclosed herein is a quantum key distribution apparatus. The quantum key distribution apparatus includes an optical pulse in which information for private key generation is included is transmitted to multiple receivers, respectively, through different communication paths, and the optical pulse is generated at a speed higher than an optical pulse measurement speed of each of the multiple receivers by a multiple of a number of multiple receivers.

公开(公告)号：US20240089124A1

公开(公告)日：2024-03-14

申请号：US18126215

申请日：2023-03-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Chang-Ho HONG ,  Se-Wan JI ,  O-Sung KWON ,  Youn-Chang JEONG ,  Eun-Ji KIM ,  Seok KIM ,  Haeng-Seok KO ,  Dae-Sung KWON ,  Jin-Gak JANG

IPC: H04L9/32 ,  H04L9/08

CPC classification number: H04L9/3273 ,  H04L9/085 ,  H04L9/0852

Abstract: Disclosed herein are an apparatus and method for mutual authentication of quantum entities based on Measurement-Device-Independent Quantum Key Distribution (MDI-QKD). The method may include configuring a quantum input form based on an authentication key shared in advance with a counterpart entity, applying polarization modulation to the configured quantum input form, transmitting the quantum input form to which polarization modulation is applied to a quantum measurement device, and authenticating the counterpart entity by checking whether the counterpart entity configures a quantum input form according to the shared authentication key using a measurement result and information about polarization modulation.

公开(公告)号：US20220006627A1

公开(公告)日：2022-01-06

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

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：US20210266157A1

公开(公告)日：2021-08-26

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

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.