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:
May. 18, 2010
Filed:
Mar. 17, 2004
Junji Yoshida, Neyagawa, JP;
Shinji Hamai, Kadoma, JP;
Junji Yoshida, Neyagawa, JP;
Shinji Hamai, Kadoma, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A communication apparatus with a memory () holding CA information A() including (i) a CA certificate A() indicating that an AP server certificate A() (that indicates the validity of an application server ()) is valid and (ii) a URL B() indicating the URL of a download server B() where CA information B() including the next valid CA certificate B() is stored. The communication apparatus also having a server authentication unit () verifying the AP server certificate A() using the CA certificate A(), and having a CA information update unit () obtaining the CA information B() from the download server B() indicated by the URL B(), wherein, when the CA certificate A() becomes revoked, the server authentication unit () authenticates the application server () using the CA certificate B() included in the CA information B() obtained by the CA information update unit ().