The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2025
Filed:
Feb. 24, 2022
Kabushiki Kaisha Toshiba, Tokyo, JP;
Ririka Takahashi, Tokyo, JP;
Yoshimichi Tanizawa, Yokohama Kanagawa, JP;
Alexander Dixon, Yokohama Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to an embodiment, a quantum cryptography communication system includes a quantum cryptography communication device and a key management device. The quantum cryptography communication system includes a generated information supply unit, a reception unit, a determination unit, and a global key supply unit. The generated information supply unit is configured to supply generated information generated by quantum key distribution processing, to the key management device. The reception unit is configured to receive the generated information from the quantum cryptography communication device. The determination unit is configured to determine a ratio at which the generated information is used for a global key random number for each encrypted data communication destination. The global key supply unit is configured to supply a global key generated from the global key random number to an application connected to the key management device.