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2-28 Chapter 2: BIOS information
Key-exchange Key (KEK) refers to Microsoft
®
Secure Boot Key Enrollment Key (KEK).
Clear Secure Boot keys
This item appears only when you load the default Secure Boot keys. This item
allows you to clear all default Secure Boot keys.
PK Management
The Platform Key (PK) locks and secures the rmware from any non-permissible
changes. The system veries the PK before your system enters the OS.
Load PK from File
Allows you to load the downloaded PK from a USB storage device.
Copy PK to File
Allows you to store the PK to a USB storage device.
Delete PK
Allows you to delete the PK from your system. Once the PK is deleted, all the
system’s Secure Boot keys will not be active. Conguration options: [Yes] [No]
The PK le must be formatted as a UEFI variable structure with time-based authenticated
variable.
KEK Management
The KEK (Key-exchange Key or Key Enrollment Key) manages the Signature database
(db) and Revoked Signature database (dbx).
Key-exchange Key (KEK) refers to Microsoft
®
Secure Boot Key Enrollment Key (KEK).
Load KEK from File
Allows you to load the downloaded KEK from a USB storage device.
Copy KEK to File
Allows you to store the KEK to a USB storage device.
Delete the KEK
Allows you to delete the KEK from your system. Conguration options: [Yes] [No]
Append KEK from le
Allows you to load the additional KEK from a storage device for an additional db and
dbx loaded management.
The KEK le must be formatted as a UEFI variable structure with time-based authenticated
variable.