beautypg.com

Asus A85XM-A User Manual

Page 70

background image

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 firmware from any non-permissible

changes. The system verifies 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. Configuration options: [Yes] [No]

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

®

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. Configuration options: [Yes] [No]

Append KEK from file

Allows you to load the additional KEK from a storage device for an additional db and

dbx loaded management.

The KEK file must be formatted as a UEFI variable structure with time-based authenticated

variable.