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:
Oct. 25, 2022
Filed:
Nov. 09, 2018
Nippon Telegraph and Telephone Corporation, Chiyoda-ku, JP;
Masahiro Matsui, Musashino, JP;
Yuki Okano, Musashino, JP;
Tetsutaro Kobayashi, Musashino, JP;
Reo Yoshida, Musashino, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Chiyoda-ku, JP;
Abstract
A key exchange device is provided that includes: a shared secret key storage in which shared secret information mkwhich is information different from a secret key of the key exchange device is stored; an authentication information addition unit that generates authentication information σ, by which authentication is performed and falsification is detected, for key exchange information e, which is output to the outside, by using the shared secret information mk; and an authentication information verification unit that receives key exchange information eand authentication information σcorresponding to the key exchange information efrom the outside, verifies the authentication information σusing the shared secret information mk, and, if the authentication information σis not successfully verified, stops a key exchange, and the shared secret information mkis a value that is used in a generation process in a key exchange.