| # NPCX DRBG driver configuration options |
| |
| # Copyright (c) 2024 Nuvoton Technology Corporation. |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| menuconfig ENTROPY_NPCX_DRBG |
| bool "NPCX DRBG driver" |
| default y |
| depends on DT_HAS_NUVOTON_NPCX_DRBG_ENABLED && SOC_NPCX9MFP |
| select ENTROPY_HAS_DRIVER |
| help |
| This option enables the deterministic random bit generator (DRBG) |
| driver for NPCX family of processors. |
| |
| if ENTROPY_NPCX_DRBG |
| |
| choice |
| prompt "DRBG Security Strength Selection" |
| default ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_128B |
| help |
| The chosen security strength defines the amount of entropy bits |
| generated internally and passed to the conditioning component. |
| |
| config ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_112B |
| bool "DRBG security strength 112 bits" |
| |
| config ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_128B |
| bool "DRBG security strength 128 bits" |
| |
| config ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_192B |
| bool "DRBG security strength 192 bits" |
| |
| config ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_256B |
| bool "DRBG security strength 256 bits" |
| |
| config ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_128B_TEST |
| bool "DRBG security strength 12b bits test" |
| |
| config ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_256B_TEST |
| bool "DRBG security strength 256 bits test" |
| |
| endchoice |
| |
| config ENTROPY_NPCX_DRBG_SECURITY_STRENGTH |
| int |
| default 0 if ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_112B |
| default 1 if ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_128B |
| default 2 if ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_192B |
| default 3 if ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_256B |
| default 4 if ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_128B_TEST |
| default 5 if ENTROPY_NPCX_DRBG_SECURITY_STRENGTH_256B_TEST |
| |
| config ENTROPY_NPCX_DRBG_RESEED_INTERVAL |
| int "DRBG Reseed Interval" |
| default 100 |
| help |
| Number of gererations allowed until next reseeding. |
| |
| endif |
