Title:
ＩｏＴ鍵管理システム，セキュアデバイス，ＩｏＴデバイス，デバイス管理装置およびセキュアエレメントの公開鍵証明書生成方法
Document Type and Number:
Japanese Patent JP7400444
Kind Code:
B2
Abstract:
To allow, in applying for a public key certificate 27 of a secure element 2, a device management apparatus 4 to verify the correctness of a public key 23 for applying for the issuance of the public key certificate 27 to a CA 5.SOLUTION: In an IoT key management system 1 according to the present embodiment, a secure element 2 generates a secret key 22 and a public key 23 of an asymmetric cryptographic system, generates an authentication code 25 of a public key file 24 including at least the public key 23, and causes a device management apparatus 4 to verify the authentication code 25 of the public key file 24 to allow the device management apparatus 4 to verify the correctness of the public key 23 included in a CSR file 31a with a signature that is transmitted to a CA5.SELECTED DRAWING: Figure 5
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Inventors:
Chigo Haga
Application Number:
JP2019232211A
Publication Date:
December 19, 2023
Filing Date:
December 24, 2019
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
H04L9/08; G06F21/44; H04L9/32
Domestic Patent References:
| JP2015039141A | ||||
| JP2017175226A | ||||
| JP2019057755A |
Attorney, Agent or Firm:
Hiromi Fujimasu
Keiko Fukamachi
Hideo Ito
Naoki Goto
Hideyuki Tateishi
Keiko Fukamachi
Hideo Ito
Naoki Goto
Hideyuki Tateishi