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