To provide a technique which allows safe management by preventing the leakage of user data (virtual OS data) and the like in a situation where a virtual server is operated and used by a user terminal.
This system includes a server device 1 including a hypervisor 10 that operates a plurality of virtual operating systems. For example, the plurality of virtual operating systems include a management operating system 11, an encryption virtual operating system 12, and a plurality of guest operating systems 13 used by respective user terminals 3. The encryption virtual operating system 12 includes an encryption managing part 51 that provides management by generating a different encryption key for each of the user's guest operating systems 13, and an encryption driver 52 that encrypts and decrypts data on each of the user's guest operating systems 13 by using the corresponding encryption key. In inputting and outputting data, a split driver 63 of the guest operating system 13 accesses a split driver 62 of the encryption virtual operating system 12 and an encryption function is automatically utilized.
| JPH07170280A | 1995-07-04 | |||
| JP2007510198A | 2007-04-19 |
| WO2009044461A1 | 2009-04-09 |
Yoshitaka Kozuka
Akiko Tsutsui