Supermicro Supero C7Z97-M - Key Exchange Key; Delete KEK; Set New KEK; Append KEK

Chapter 4: AMI BIOS
4-53
When prompted, select "Yes" to load Factory Defaults or "No' to load
from a le.
Key Exchange Key
This item displays the current Key Exchange Key status.
Delete KEK
This item deletes a previously installed Key Exchange Key.
Set New KEK
This item uploads and installs a Key Exchange Key. You may insert a
factory default key or load from a le. When prompted, select "Yes" to
load Factory Defaults or "No' to load from a le.
Append KEK
This item uploads and adds a Key Exchange Key into the Key Manage-
ment. You may insert a factory default key or load from a le. When
prompted, select "Yes" to load Factory Defaults or "No' to load from a le.
Authorized Signatures
This item displays the current Authorized Signatures status.
Delete DBT
This item deletes a previously installed Authorized Signature.
Set New DBT
This item uploads and installs an Authorized Signature . You may insert
a factory default key or load from a le. The le formats accepted are:
1) Public Key Certicate
a. EFI Signature List
b. EFI CERT X509 (DER Encoded)
c. EFI CERT RSA2048 (bin)
d. EFI SERT SHA256 (bin)
2) EFI Time Based Authenticated Variable
When prompted, select "Yes" to load Factory Defaults or "No' to load
from a le.
Append DBT
This item uploads and adds an Authorized Signature into the Key Man-
agement. You may insert a factory default key or load from a le. When
prompted, select "Yes" to load Factory Defaults or "No' to load from a le.