| 摘要 |
A storage device includes a first storage area in which data can be read out and rewritten and file data is stored, a second storage area in which data can be read out and appended to an unwritten area and a first calculated value for detecting falsification which is calculated from the file data, and a controller that performs access control on the first storage area and the second storage area. The controller includes a frontend unit that receives a command from an external host device and accesses the first storage area and the second storage area, and a falsification detection notification unit that determines, without reading out the first calculated value to the host device, whether the first calculated value matches a second calculated value for detecting falsification which is calculated from the file data and notifies the host device of the determination result. |
