CONFIG_MBEDTLS_CTR_DRBG_USE_128_BIT_KEY

(No prompt – not directly user assignable.)

Type: bool

Help

Use 128 bit AES instead of 256 bit for CTR_DRBG.

Direct dependencies

NRF_SECURITY_RNG && MBEDTLS_LEGACY_CRYPTO_C && NRF_SECURITY

(Includes any dependencies from ifs and menus.)

Default

y if CRYPTOCELL_CC310_USABLE

Kconfig definition

At <nrfxlib>/nrf_security/Kconfig.legacy:334

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:33 → <Zephyr>/modules/Kconfig:6 → <nRF>/doc/_build/kconfig/Kconfig.modules:92 → <nrfxlib>/Kconfig.nrfxlib:13 → <nrfxlib>/nrf_security/Kconfig:111

Menu path: (Top) → Modules → nrfxlib (/home/runner/work/sdk-nrf/sdk-nrf/ncs/nrfxlib) → Nordic nrfxlib → nrf_security module → Legacy mbed TLS crypto APIs → Enable (legacy) mbed TLS crypto APIs → Random Number Generator support

config MBEDTLS_CTR_DRBG_USE_128_BIT_KEY
    bool
    default y if CRYPTOCELL_CC310_USABLE
    depends on NRF_SECURITY_RNG && MBEDTLS_LEGACY_CRYPTO_C && NRF_SECURITY
    help
      Use 128 bit AES instead of 256 bit for CTR_DRBG.

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