Supermicro X13SEI-TF User Manual page 117


Platform Key (PK)
Use this feature to enter and configure a set of values to be used as platform firmware
keys for the system. These values also indicate the sizes, keys numbers, and the sources
of the authorized signatures. Select Update to update your "Platform Key." The default
option is Update.
 Key Exchange Keys (KEK)
Use this feature to enter and configure a set of values to be used as Key-Exchange-Keys
for the system. These values also indicate the sizes, keys numbers, and the sources of
the authorized signatures. Select Update to update your "Key Exchange Keys." Select
Append to append your "Key Exchange Keys." The options are Update and Append.
 Authorized Signatures (db)
Use this feature to enter and configure a set of values to be used as Authorized 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
Delete to delete the authorized signatures. The options are Update and Append.

Forbidden Signatures (dbx)
Use this feature to enter and configure a set of values to be used as Forbidden Signa-
tures for the system. These values also indicate sizes, key numbers, and key sources of
the forbidden signatures. Select Update to update your "Forbidden Signatures." Select
Append to append your "Forbidden Signatures." The options are Update and Append.

Authorized TimeStamps (dbt)
This feature allows you to set and save the timestamps for the authorized signatures
which will indicate the time when these signatures are entered into the system. These
values also indicate sizes, keys, and key sources of the authorized timestamps. Select
Update to update your "Authorized TimeStamps." Select Append to append your "Autho-
rized TimeStamps." The options are Update and Append.
 OsRecovery Signatures (dbr)
This feature allows you to set and save the timestamps for the authorized signatures
which will indicate the time when these signatures are entered into the system. These
values also indicate sizes, keys, and key sources of the authorized timestamps. Select
Update to update your "Authorized TimeStamps." Select Append to append your "Autho-
rized TimeStamps." The options are Update and Append.
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Chapter 4: UEFI BIOS