It's zero overhead for zero extra functionality, here it seems they've added some > Additionally, SentinelBoot employs public-key cryptography to verify the in

It's zero overhead for zero extra functionality, here it seems they've added some > Additionally, SentinelBoot employs public-key cryptography to verify the integrity of a booted kernel (digital signature), by the use of the RISC-V Vector Cryptography extension, establishing secure boot functionality.