Asus Prime Z270-A Series Bios Manual

Also see for PRIME Z270-A Series: User guide Quick start guide

ASUS PRIME Z270-A/AR Series BIOS Manual61Key ManagementInstall Default Secure Boot keysThis item allows you to immediately load the default Security Boot keys, Platform key(PK), Key-exchange Key (KEK), Signature database (db), and Revoked Signatures(dbx). When the default Secure boot keys are loaded, the PK state will change fromUnloaded mode to loaded mode.Clear Secure Boot keysThis item appears only when you load the default Secure Boot keys. This item allowsyou to clear all default Secure Boot keys.Save Secure Boot KeysThis item allows you to save the PK (Platform Keys) to a USB storage device.PK ManagementThe Platform Key (PK) locks and secures the firmware from any permissible changes.The system verifies the PK before your system enters the OS.Save to fileThis item allows you to save the PK to a USB storage device.Set New keyThis item allows you to load the downloaded PK from a USB storagedevice.Delete keyThis item allows you to delete the PK from your system. Once the PK isdeleted, all the system’s Secure Boot keys will not be active.Configuration options: [Yes] [No]The PK file must be formatted as a UEFI variable structure with time-based authenticatedvariable.KEK ManagementThe 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 fileThis item allows you to save the KEK to a USB storage device.Set New keyThis item allows you to load the downloaded KEK from a USB storagedevice.Append KeyThis item allows you to load the additional KEK from a storage device foran additional db and dbx loaded management.

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