Chapter 4: UEFI BIOS
111
Secure Boot Variable/Size/Keys/Key Source
Platform Key (PK)
This feature allows the user to enter and configure a set of values to be used as platform
firmware keys for the system. The sizes, keys numbers, and key sources of the platform
keys will be indicated as well. Select Update to update the platform key.
Key Exchange Keys
This feature allows the user to enter and configure a set of values to be used as Key-
Exchange-Keys for the system. The sizes, keys numbers, and key sources of the Key-
Exchange-Keys will be indicated as well. Select
Update
to update your "Key Exchange
Keys". Select Append to append your "Key Exchange Keys".
Authorized Signatures
This feature allows the user to enter and configure a set of values to be used as Autho
-
rized Signatures for the system. These values also indicate the sizes, keys numbers,
and the sources of the authorized signatures. Select Update to update your "Authorized
Signatures". Select Append to append your "Authorized Signatures". The settings are
Details, Export, Update, Append, and Delete.
Forbidden Signatures
This feature allows the user to enter and configure a set of values to be used as Forbid
-
den Signatures for the system. These values also indicate sizes, keys numbers, and key
sources of the forbidden signatures. Select Update to update your "Forbidden Signa-
tures". Select Append to append your "Forbidden Signatures". The settings are Details,
Export, Update, Append, and Delete.
Authorized TimeStamps
This feature allows the user to set and save the timestamps for the authorized signatures
which will indicate the time when these signatures are entered into the system. Select
Update to update your "Authorized TimeStamps". Select Append to append your "Au-
thorized TimeStamps". The settings are Update and Append.
Os Recovery Signatures
This feature allows the user to set and save the authorized signatures used for OS recov-
ery. Select Update
to update your "OS Recovery Signatures". Select Append to append
your "OS Recovery Signatures". The settings are Update and Append.
