.. zrf1552681385017 .. _overview-of-uefi-secure-boot: ============================ Overview of UEFI Secure Boot ============================ Secure Boot is an optional capability of |UEFI| firmware. Secure Boot is a technology where the system firmware checks that the system boot loader is signed with a cryptographic key authorized by a database contained in the firmware or a security device. |prod|'s implementation of Secure Boot also validates the signature of the second-stage boot loader and the kernel. |prod|'s public key, for programming in the hardware's Secure Boot database, can be found in the |prod| ISO.