Asus Z97-PRO GAMER User Manual page 93

Install Default Secure Boot keys
This item allows you to immediately load the default Security Boot keys,
Platform key (PK), Key-exchange Key (KEK), Signature database (db), and
Revoked Signatures (dbx). When the default Secure boot keys are loaded,
the PK state will change from Unloaded mode to loaded mode.
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.
Save Secure Boot Keys
Allows you to save the PK (Platform Keys) to a USB storage device.
PK Management
The Platform Key (PK) locks and secures the firmware from any non-permissible
changes. The system verifies the PK before your system enters the OS.
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. Configuration options:
[Yes] [No]
Load Default PK
Select Yes to load the system default PK or select No to load a
downloaded PK from a USB storage device.
The PK file 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
Delete KEK
This item allows you to delete the KEK from your system.
Configuration options: [Yes] [No]
Load Default KEK
Select Yes to load the system default KEK or select No to load a
downloaded KEK from a USB storage device.
Append Default KEK
Select Yes to append the system default KEK or select No to append a
downloaded KEK from a USB storage device.
The KEK file must be formatted as a UEFI variable structure with time-based authenticated
variable.
DB Management
The db (Authorized Signature database) lists the signers or images of UEFI
applications, operating system loaders, and UEFI drivers that you can load on the
single computer.
ASUS Z97-PRO GAMER
Secure Boot Key-Enrollment Key (KEK).
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