Asus 90SF0071-M00040 User Manual page 149

Platform Key (PK)
The Platform Key (PK) locks and secures the firmware from any permissible changes.
The system verifies the PK before your system enters the OS.
Save to file
This item allows you to save the PK to a USB storage device.
Set New
This item allows you to load the downloaded PK from a USB storage
device.
Erase
This item 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]
The PK file must be formatted as a UEFI variable structure with time-based authenticated
variable.
Key Exchange Key (KEK)
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
Save to file
This item allows you to save the KEK to a USB storage device.
Set New
This item allows you to load the downloaded KEK from a USB storage
device.
Append
This item allows you to load the additional KEK from a storage device for
an additional db and dbx loaded management.
Erase
This item allows you to delete the KEK from your system.
Configuration options: [Yes] [No]
The KEK file must be formatted as a UEFI variable structure with time-based authenticated
variable.
Authorized Signatures (DB)
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.
Save to file
This item allows you to save the db to a USB storage device.
Set New
This item allows you to load the downloaded db from a USB storage
device.
ASUS ESC4000 G4 Series
Secure Boot Key-Enrollment Key (KEK).
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