QKD DEVICE, QKD SYSTEM, QKD INITIATION CONTROL METHOD, AND PROGRAM

• Main Author: TANIZAWA YOSHIMICHI
• Format: Patent
• Language: English; Japanese
• Published: 08.02.2024
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

To provide a QKD device, a QKD system, a QKD initiation control method, and a program that further improve security of the QKD system.SOLUTION: In a QKD system comprising a management system, as well as a QKD device and a KM device in each of a plurality of bases, the QKD device includes an authentication processing unit and an initiation unit. The authentication processing unit performs inter-QKD device connection authentication that indicates a process of authentication with a counter QKD (Quantum Key Distribution) device and KM-QKD connection authentication that indicates a process of authentication with a counter KM (Key Manager). The initiation unit enables a QKD function when the inter-QKD device connection authentication was successful and the KM-QKD connection authentication was successful.SELECTED DRAWING: Figure 4 【課題】ＱＫＤシステムのセキュリティを更に向上させるＱＫＤ装置、ＱＫＤシステム、ＱＫＤ開始制御方法及びプログラムを提供する。【解決手段】管理システム並びに複数の拠点それぞれにＱＫＤ装置とＫＭ装置を備えるＱＫＤシステムにおいて、ＱＫＤ装置は、認証処理部と開始部とを備える。認証処理部は、対向のＱＫＤ（Ｑｕａｎｔｕｍ Ｋｅｙ Ｄｉｓｔｒｉｂｕｔｉｏｎ）装置との認証処理を示すＱＫＤ装置間接続認証と、対向のＫＭ（Ｋｅｙ Ｍａｎａｇｅｒ）装置との認証処理を示すＫＭ－ＱＫＤ接続認証とを行う。開始部は、ＱＫＤ装置間接続認証が成功し、かつ、ＫＭ－ＱＫＤ接続認証が成功した場合、ＱＫＤ機能を有効にする。【選択図】図４