EFI_FIRMWARE_IMAGE_AUTHENTICATION Struct Reference


Data Fields

UINT64 MonotonicCount
WIN_CERTIFICATE_UEFI_GUID AuthInfo

Detailed Description

Image Attribute -Authentication Required

Field Documentation

Provides the authorization for the firmware image operations. It is a signature across the image data and the Monotonic Count value. Caller uses the private key that is associated with a public key that has been provisioned via the key exchange. Because this is defined as a signature, WIN_CERTIFICATE_UEFI_GUID.CertType must be EFI_CERT_TYPE_PKCS7_GUID.

It is included in the signature of AuthInfo. It is used to ensure freshness/no replay. It is incremented during each firmware image operation.


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