| 摘要 |
An access control method used in a client connected to a server. The method manages a certification authority certificate used to judge whether the server has right to access the client. The certification authority certificate is made into a usable state under a predetermined condition. When accessing the server, the client receives a certificate specifying the server transmitted from the server. When a certification authority certificate corresponding to the certificate specifying the server exists in a usable state, access to the server is enables in accordance with a comparison result. |
