nuttx/crypto/Kconfig

#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#

config CRYPTO
	bool "Crypto API support"
	default n
	---help---
		Enable or disable Crypto API features

if CRYPTO

config CRYPTO_AES
	bool "AES cypher support"
	default n

config CRYPTO_ALGTEST
	bool "Perform automatic crypto algorithms test on startup"
	default n

if CRYPTO_ALGTEST

config CRYPTO_AES128_DISABLE
	bool "Omit 128-bit AES tests"
	default n

config CRYPTO_AES192_DISABLE
	bool "Omit 192-bit AES tests"
	default n

config CRYPTO_AES256_DISABLE
	bool "Omit 256-bit AES tests"
	default n

endif # CRYPTO_ALGTEST

config CRYPTO_CRYPTODEV
	bool "cryptodev support"
	default n

config CRYPTO_SW_AES
	bool "Software AES library"
	default n
	---help---
		Enable the software AES library as described in
		include/nuttx/crypto/aes.h

		TODO: Adapt interfaces so that they are consistent with H/W AES
		implementations.  This needs to support up_aesinitialize() and
		aes_cypher() per include/nuttx/crypto/crypto.h.

config CRYPTO_BLAKE2S
	bool "BLAKE2s hash algorithm"
	default n
	---help---
		Enable the BLAKE2s hash algorithm

config CRYPTO_RANDOM_POOL
	bool "Entropy pool and strong randon number generator"
	default n
	select CRYPTO_BLAKE2S
	---help---
		Entropy pool gathers environmental noise from device drivers,
		user-space, etc., and returns good random numbers, suitable
		for cryptographic use. Based on entropy pool design from
		*BSDs and uses BLAKE2Xs algorithm for CSPRNG output.

		NOTE: May not actually be cyptographically secure, if
		not enough entropy is made available to the entropy pool.

if CRYPTO_RANDOM_POOL

config CRYPTO_RANDOM_POOL_COLLECT_IRQ_RANDOMNESS
	bool "Use interrupts to feed timing randomness to entropy pool"
	default y
	---help---
		Feed entropy pool with interrupt randomness from interrupt
		dispatch function 'irq_dispatch'. This adds some overhead
		for every interrupt handled.

endif # CRYPTO_RANDOM_POOL

endif # CRYPTO