CONFIG_SB_PUBLIC_KEY_LEN

(No prompt – not directly user assignable.)

Type: int

Direct dependencies

SECURE_BOOT_CRYPTO

(Includes any dependencies from ifs and menus.)

Defaults

• 64 if SB_ECDSA_SECP256R1

• 256 if SB_RSA_PSS2048

Kconfig definition

At <nRF>/subsys/bootloader/bl_crypto/Kconfig:26

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:9 → <BuildDir>/Kconfig/Kconfig.modules:1 → <nRF>/Kconfig.nrf:25 → <nRF>/subsys/Kconfig:8 → <nRF>/subsys/bootloader/Kconfig:225

Menu path: (Top) → Modules → Nordic nRF Connect → Bootloader → Secure Boot Crypto

config SB_PUBLIC_KEY_LEN
    int
    default 64 if SB_ECDSA_SECP256R1
    default 256 if SB_RSA_PSS2048
    depends on SECURE_BOOT_CRYPTO

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)