Patent ID: 11941261
Assignee: KIOXIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. A storage device, comprising:
a storage unit including:
a first storage region to which a first user is assigned, and
a second storage region to which a second user is assigned;

a first controller with a table storing information indicating whether the first and second storage regions can be protected by a data protection function, the first controller configured to:
execute a first user authentication for the first storage region to determine whether to permit protection of the first storage region by the data protection function, and
execute a second user authentication for the second storage region to determine whether to permit protection of the second storage region by the data protection function; and

a second controller configured to:
receive a delegated authority from the first controller to execute the second user authentication for the second storage region,
after receiving the delegated authority, execute the second user authentication for the second storage region to determine whether to permit protection of the second storage region by the data protection function, wherein

the second controller refers to the table of the first controller to determine whether to permit the protection of the second storage region by the data protection function.