Title:
通信装置、通信システムおよびプログラム
Document Type and Number:
Japanese Patent JP6076752
Kind Code:
B2
Abstract:
According to an embodiment, a communication apparatus includes a sharing processing unit, an extension unit, and a communication unit. The sharing processing unit shares a first cryptographic key with an external apparatus connected via a link, and further generates a second cryptographic key and shares the second cryptographic key with the external apparatus through secret communication using the first cryptographic key. The extension unit generates an extended key by extending a length of the second cryptographic key. The communication unit transmits the extended key to a first application which communicates with a second application to which the external apparatus provides the second cryptographic key.
Inventors:
Tanizawa Yoshimichi
Hideaki Sato
Makoto Kawamura
Hideaki Sato
Makoto Kawamura
Application Number:
JP2013009567A
Publication Date:
February 08, 2017
Filing Date:
January 22, 2013
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H04L9/08; H04L9/14
Domestic Patent References:
| JP2008306633A | ||||
| JP2013013073A | ||||
| JP2006514512A | ||||
| JP2011510583A | ||||
| JP9018469A | ||||
| JP2007267069A | ||||
| JP2005117511A |
Foreign References:
| WO2012025988A1 | ||||
| US20100329459 |
Attorney, Agent or Firm:
Sakai International Patent Office