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17.4.9 append_verify

Command: append_verify <signed_file> ¶

Verifies an appended signature on signed_file against the trusted X.509 certificates and hashes known to GRUB (see append_list_db,see append_list_dbx, see append_add_db_cert, see append_add_db_hash, see append_add_dbx_hash and see append_add_dbx_cert). Exit code $? is set to 0 if the signature validates successfully. If validation fails, it is set to a non-zero value.

See Using appended signatures in GRUB for more information.