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：US20170338952A1

公开(公告)日：2017-11-23

申请号：US15350376

申请日：2016-11-14

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: H04L9/08

CPC classification number: H04L9/0858 ,  H04L9/083

Abstract: A device and method for quantum key distribution (QKD). The QKD center includes an authentication key sharing unit for sharing authentication keys with QKD client devices; a quantum key generation unit for generating a sifted key for each of the QKD client devices using a quantum slate; an error correction unit for generating output bit strings by correcting errors of the sifted keys; and a bit string operation unit for calculating an encryption bit string by performing a cryptographic operation on the authentication keys, the distribution output bit strings and output bit strings received from the QKD client devices. The present invention improves security by preventing the QKD center from being aware of keys shared among users.