Communication apparatus and authentication apparatus

Details Communication apparatus and authentication apparatus Communication apparatus and authentication apparatus

H - Electricity

04

L

H04L 29/06 (2006.01)

Patent

CA 2485967

A communication apparatus includes: a memory (418) that holds CA information A(301a) including (~@) a CA certificate A(106a) indicating that an AP server certificate A(402a) that indicates the validity of an application server (401) is valid and (~A) a URL B(302b) indicating the URL of a download server B(406b) where CA information B(301b) including the next valid CA certificate B(106b) is stored; a server authentication unit (416) that verifies the AP server certificate A(402a) using the CA certificate A(106a); and a CA information update unit (417) that obtains the CA information B(301b) from the download server B(406b) indicated by the URL B(302b), wherein when the CA certificate A(106a) becomes revoked, the server authentication unit (416) thereafter authenticates the application server (401) using the CA certificate B(106b) included in the CA information B( 301b) obtained by the CA information update unit (417).

L'invention concerne un dispositif de communication comprenant : une m~moire (418) contenant des informations relatives ~ un organisme de certification (CA) A (301a), ~ savoir (i) un certificat relatif ~ un organisme de certification A (106a) indiquant qu'un certificat de serveur d'application (AP) A (402a) indiquant la validit~ d'un serveur d'application (401) est valide, et (ii) un URL B (302b) indiquant l'URL d'un serveur de t~l~chargement B (406b) dans lequel les informations relatives ~ un organisme de certification B (301b) avec le certificat relatif ~ un organisme de certification B (106b) est stock~ ; une unit~ d'authentification de serveur (416) permettant de v~rifier le certificat de serveur d'application A (402a) ~ l'aide du certificat relatif ~ un organisme de certification A (106a) ; et une unit~ de mise ~ jour des informations relatives ~ un organisme de certification (417) permettant d'obtenir les informations relatives ~ un organisme de certification B (301b) ~ partir du serveur de t~l~chargement B (406b) indiqu~ par l'URL B (302b). Lorsque le certificat relatif ~ un organisme de certification A (106a) est annul~, l'unit~ d'authentification de serveur (416) authentifie le serveur d'application (401) ~ l'aide du certificat relatif ~ un organisme de certification B (106b) contenu dans les informations relatives ~ un organisme de certification B (301b) fournies par l'unit~ de mise ~ jour des informations relatives ~ un organisme de certification (417).

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