User’s Manual

3-21
Chapter 3: BIOS setup
Delete Key
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.
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).
Save to File
Allows you to save the downloaded KEK to a USB storage device.
Set New Key
Allows you to load the downloaded KEK from a USB storage device.
Append Key
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 public key certicate or UEFI variable
structure with time-based authenticated variable.
Delete key
Allows you to delete the Key from your system. Conguration options: [Yes]
[No]
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.
Save to File
Allows you to save the downloaded db to a USB storage device.
Set New Key
Allows you to load the downloaded db from a USB storage device.
Append Key
Allows you to load the additional KEK from a storage device for an additional
db
and dbx loaded management.
The db le must be formatted as a UEFI variable structure with time-based
authenticated variable.
Delete Key
Allows you to delete the db le from your system. Conguration options: [Yes]
[No]