Boot seed is used by a validating entity to ensure multiple reports were generated in the same boot session. More...
#include <stdint.h>#include "tfm_plat_defs.h"Go to the source code of this file.
Macros | |
| #define | BOOT_SEED_SIZE (32u) |
| Size of boot seed in bytes. More... | |
Functions | |
| enum tfm_plat_err_t | tfm_plat_get_boot_seed (uint32_t size, uint8_t *buf) |
| Gets the boot seed, which is a constant random number during a boot cycle. More... | |
Boot seed is used by a validating entity to ensure multiple reports were generated in the same boot session.
Boot seed is a random number, generated only once during a boot cycle and its value is constant in the same cycle. Size recommendation is 256-bit to meet the statistically improbable property. Boot seed can be generated by secure boot loader an included to the measured boot state or can be generated by PRoT SW.
Definition in file tfm_plat_boot_seed.h.
| #define BOOT_SEED_SIZE (32u) |
Size of boot seed in bytes.
Definition at line 38 of file tfm_plat_boot_seed.h.
| enum tfm_plat_err_t tfm_plat_get_boot_seed | ( | uint32_t | size, |
| uint8_t * | buf | ||
| ) |
Gets the boot seed, which is a constant random number during a boot cycle.
| [in] | size | The required size of boot seed in bytes |
| [out] | buf | Pointer to the buffer to store boot seed |