Schlüsselverwaltungsvorrichtung, Schlüsselverwaltungsverfahren und Computerprogrammprodukt

Details

Veröffentlichungs-Nr.

EP4716150

Anmeldetag

28. Mai 2025

Veröffentlichung

25. März 2026

Rechtsraum

EP

IPC

H04L9/08

Abstract

A key management device according to an arrangement includes a global-key-generation unit, a management unit, a communication unit, and a supply unit. The global-key-generation unit is configured to generate a first-global key used for encryption or decryption of communication of an application, and store the first-global key shared with another key-management-device by encrypted transfer using QKD in a storage unit. The management unit is configured to check an expiration date of the first-global key in the storage unit, and update the first-global key with the expired expiration date to a revoked global key. The communication unit is configured to, when sharing a second-global key newly-generated by the global-key-generation unit with another key-management-device, encrypt the second-global key using the revoked global key, and transmit the encrypted second-global key to another key-management-device. The supply unit is configured to supply the second-global key to the application.

Anmelder

Firmen

Kabushiki Kaisha Toshiba
Toshiba Digital Solutions Corporation

Land

🇯🇵 Japan

Fachgebiete