AUTHENTICATION SYSTEM

To provide an authentication system configured to easily manage a key and determine authenticity of a transmitting user or a receiving user.SOLUTION: An authentication system 1 includes a node of a user A which transmits a message, a node of a user B which receives the message, and a central managem...

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Bibliographic Details
Main Authors FUJIWARA MIKIO, KATO TAKESHI, SASAKI MASAHIDE, TSURUMARU TOYOHIRO
Format Patent
LanguageEnglish
Japanese
Published 14.05.2024
Subjects
ADVERTISING
CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY
CRYPTOGRAPHY
DISPLAY
EDUCATION
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PHYSICS
SEALS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:To provide an authentication system configured to easily manage a key and determine authenticity of a transmitting user or a receiving user.SOLUTION: An authentication system 1 includes a node of a user A which transmits a message, a node of a user B which receives the message, and a central management node which performs counterparty authentication and message authentication between the users, which are provided in a quantum key distribution network. A transmission node 2 includes a counterparty authentication request unit, a secret data transmission unit which transmits secret data encrypted with OTP, and a message authentication unit which performs message authentication. A management node 3 includes: a secret communication control unit; a secret data receiving unit which receives and decrypts the encrypted secret data; a share transmission unit which transmits a share of a receiving user encrypted with OTP to a receiving node; and a message authentication unit which performs message authentication. The receiving node 4 includes a counterparty authentication processing unit, a share receiving unit which decrypts the encrypted share, and a message authentication unit which performs message authentication.SELECTED DRAWING: Figure 1 【課題】鍵の管理が容易で、送信ユーザ又は受信ユーザの真偽を判定する認証システムを提供する。【解決手段】認証システム１は、メッセージを送信するユーザＡのノード、メッセージを受信するユーザＢのノード及びユーザ間の相手認証及びメッセージ認証を行う中央管理ノードを量子鍵配送ネットワーク内に備える。送信ノード２は、相手認証要求部と、ＯＴＰで秘密データを暗号化して送信する秘密データ送信部及びメッセージ認証を行うメッセージ認証部を備える。管理ノード３は、秘匿通信制御部、暗号化された秘密データを受信して復号する秘密データ受信部、閾値秘密分散を用いて、ＯＴＰで受信ユーザのシェアを暗号化して受信ノードに送信するシェア送信部及びメッセージ認証を行うメッセージ認証部を備える。受信ノード４は、相手認証処理部、暗号化されたシェアを復号するシェア受信部及びメッセージ認証を行うメッセージ認証部を備える。【選択図】図１
Bibliography:Application Number: JP20220173274