| 摘要 |
An access control system includes a server 11, an access management database storage device 12, first and second client devices 13 and 15, and data storage devices 14 and 16. The first and second client devices 13 and 15 forms a peer-to-peer file exchange system, and can access the server 11. The access management database storage device 12 stores an access management list. When receiving a request for data from the second client device 15, the first client device 13 inquires the server 11 about whether the requested data can be accessed. The server 11 determines whether the data can be accessed by using the access management list. |
