Asus B85M-GAMER User Manual page 73

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
Allows you to load the 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 the KEK
Allows you to delete the KEK from your system. Configuration options:
[Yes] [No]
Load Default KEKe
Allows you to load the downloaded KEK from a USB storage device.
Append Default KEK
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.
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.
Delete the db
Allows you to delete the db file from your system. Configuration options:
[Yes] [No]
Load Default db
Allows you to load the downloaded db from a USB storage device.
Append Default db
Allows you to load the additional db from a storage device so that more
images can be loaded securely.
DBX Management
The dbx (Revoked Signature database) lists the forbidden images of db items that are
no longer trusted and cannot be loaded.
ASUS B85M-GAMER
Secure Boot Key-Enrollment Key (KEK).
®
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