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:
Jun. 02, 2020
Filed:
Oct. 19, 2016
Kddi Corporation, Tokyo, JP;
Keisuke Takemori, Tokyo, JP;
Takamasa Isohara, Tokyo, JP;
Yoshiyuki Shibata, Tokyo, JP;
Kei Katou, Tokyo, JP;
Teruaki Honma, Tokyo, JP;
KDDI CORPORATION, Tokyo, JP;
Abstract
A communication device includes: a first subscriber identification unit that stores first subscriber identification unit identification information associated with user identification information; and a communication unit that communicates with another communication device, the other communication device including a second subscriber identification unit that stores second subscriber identification unit identification information associated with user identification information. The first subscriber identification unit includes: a key memory unit that records a pair of a public key certificate and a secret key, the pair being shared with the second subscriber identification unit; a public key certificate generation unit that generates, using the secret key recorded in the key memory unit, a 'first public key certificate comprising the first subscriber identification unit identification information or the user identification information associated with the first subscriber identification unit identification information'; and a secret key memory unit that records a secret key paired with the first public key certificate.