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SubjectRe: [PATCH v4] certs: Add EFI_CERT_X509_GUID support for dbx entries
On Tue, Sep 15, 2020 at 08:49:27PM -0400, Eric Snowberg wrote:
> The Secure Boot Forbidden Signature Database, dbx, contains a list of now
> revoked signatures and keys previously approved to boot with UEFI Secure
> Boot enabled. The dbx is capable of containing any number of
> entries.
> Currently when EFI_CERT_X509_GUID are contained in the dbx, the entries are
> skipped.
> Add support for EFI_CERT_X509_GUID dbx entries. When a EFI_CERT_X509_GUID
> is found, it is added as an asymmetrical key to the .blacklist keyring.
> Anytime the .platform keyring is used, the keys in the .blacklist keyring
> are referenced, if a matching key is found, the key will be rejected.
> Signed-off-by: Eric Snowberg <>

Looks good to me.

Reviewed-by: Jarkko Sakkinen <>


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