Patent ID: 9460276
Filing Date: 2016-10-04
CPC Classification: G06F

Claim Text:
1. A virtual machine system comprising a computer that functions as a first virtual machine, a second virtual machine, and a hypervisor while a program is executed, the hypervisor controlling execution of the first virtual machine and the second virtual machine, the first virtual machine being embodied as a first operating system, and including: the second virtual machine is embodied as a second operating system having a lower security function than the first operating system, and uses a virtual device that is a virtualized storage device, and when having received an authentication result indicating an authentication success from the authentication unit, the hypervisor enables the second virtual machine to access, as an input and output of the virtual device, a storage area storing the confidential information and a storage area not storing the confidential information, and when not having received the authentication result indicating the authentication success from the authentication unit, the hypervisor disables the second virtual machine from accessing, as the input and output of the virtual device, the storage area storing the confidential information, and enables the second virtual machine to access, as the input and output of the virtual device, the storage area not storing the confidential information.