Title:
COMMON KEY SHARING SYSTEM, METHOD, CLIENT DEVICE, MASTER PUBLIC KEY STORAGE SERVER, AND PROGRAM
Document Type and Number:
Japanese Patent JP2017208773
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a common key sharing technology having secret key management improved more than before.SOLUTION: A secret key Dis divided into a concealed secret key δand a pin and a secret key Dis divided into a concealed secret key δand a pin. Authentication key exchange is performed using the concealed secret keys δ, δand two elements of the pins. Thereby, even when one of a concealed secret key and a pin leaks, safety is kept, which makes it possible to store the concealed secret key in a convenient area such as a browser. Therefore, convenience of secret key management is improved.SELECTED DRAWING: Figure 1
Inventors:
SAITO TSUNEKAZU
KOBAYASHI TETSUTARO
KOBAYASHI TETSUTARO
Application Number:
JP2016101710A
Publication Date:
November 24, 2017
Filing Date:
May 20, 2016
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
H04L9/08
Domestic Patent References:
| JP2013157711A | 2013-08-15 |
Foreign References:
| US20090307492A1 | 2009-12-10 |
Other References:
齋藤 恆和，他: "ＩＤ認証鍵交換における自己訂正を用いた鍵管理方式", ２０１５年暗号と情報セキュリティシンポジウム, vol. ３Ｆ２−３, JPN6019006721, 23 January 2015 (2015-01-23), pages 1 - 6, ISSN: 0003986573
Attorney, Agent or Firm:
Naoki Nakao
Yukio Nakamura
Yoshimura Munehiro
Yukio Nakamura
Yoshimura Munehiro
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