Hitachi, Ltd.

Takanobu Oikawa

Takahiro Fujishiro

Satoru Tezuka

Yoko Kumagai

Izumi Anayama

A public key certificate generation method includes the steps of: sending a certificate issuing request including a registration contents of a public key certificate and an information content guaranteed by the registration authority, to the issuing authority in a registration authority and generating a public key certificate including the registration contents described in the certificate issuing request the information guaranteed by the registration authority issuing contents issued by the issuing authority, and a signature to the issuing contents in the issuing authority.

Growing community of inventors

Funabashi, Japan

Takanobu Oikawa