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Title:
QUANTUM KEY DELIVERY DEVICE, QUANTUM KEY DELIVERY SYSTEM AND QUANTUM KEY DELIVERY METHOD
Document Type and Number:
Japanese Patent JP2016181814
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a quantum key delivery device, a quantum key delivery system and a quantum key delivery method capable of reducing the processing delay of cryptographic key sharing operation.SOLUTION: A quantum key delivery device includes quantum key sharing means, key distillation means, first management means, second management means, and key management means. Storage means is internal or external. The quantum key sharing means acquires a photon bit string by quantum key delivery. The key distillation means generates a link key by key distillation processing. The first management means stores the link key, as a link transmission key, in internal or external storage means. The second management means stores a first application key, determining a predetermined role from an application key, i.e., a cryptographic key for encrypted data communication, in the storage means, and transmits a second application key determining a role corresponding to the first application key, while encrypting by the link transmission key, to other quantum key delivery device. The key management means manages the first application key so that an application uses the same for encryption or decryption.SELECTED DRAWING: Figure 7

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Inventors:
TANIZAWA YOSHIMICHI
Application Number:
JP2015061182A
Publication Date:
October 13, 2016
Filing Date:
March 24, 2015
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
H04L9/12; H04L9/14
Domestic Patent References:
JP2014103503A2014-06-05
JP2013211748A2013-10-10
JPH09270785A1997-10-14
Foreign References:
WO2004030270A12004-04-08
US7515716B12009-04-07
Other References:
田中聡寛 他: "量子暗号技術を実装する際の課題", 電子情報通信学会技術研究報告, vol. 第109巻 第212号, JPN6018027279, 22 September 2009 (2009-09-22), pages 53 - 60, ISSN: 0003838946
谷澤佳道 他: "高度情報社会の進展を支えるセキュリティ技術", 東芝レビュー, vol. 第69巻 第1号, JPN6018027281, 1 January 2014 (2014-01-01), pages 35 - 38, ISSN: 0003838947
Attorney, Agent or Firm:
Sakai International Patent Office



 
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