:orphan:

.. title:: CONFIG_MBEDTLS_CHACHA20_C

.. kconfig:: CONFIG_MBEDTLS_CHACHA20_C

CONFIG_MBEDTLS_CHACHA20_C
#########################

*CHACHA20 stream cipher support*

Type: ``bool``

Help
====

.. code-block:: none

    Enable the CHACHA20 stream cipher.
    MBEDTLS_CHACHA20_C setting in mbed TLS config file.

Direct dependencies
===================

\ :kconfig:`TFM_MINIMAL <CONFIG_TFM_MINIMAL>` || (\ :kconfig:`NRF_SECURITY_ANY_BACKEND <CONFIG_NRF_SECURITY_ANY_BACKEND>` && \ :kconfig:`NORDIC_SECURITY_BACKEND <CONFIG_NORDIC_SECURITY_BACKEND>`)

*(Includes any dependencies from ifs and menus.)*

Defaults
========

- n
- y

Symbols selected by this symbol
===============================

- \ :kconfig:`CC3XX_MBEDTLS_CHACHA20_C <CONFIG_CC3XX_MBEDTLS_CHACHA20_C>` if \ :kconfig:`CC3XX_SINGLE_BACKEND <CONFIG_CC3XX_SINGLE_BACKEND>`
- \ :kconfig:`OBERON_MBEDTLS_CHACHA20_C <CONFIG_OBERON_MBEDTLS_CHACHA20_C>` if \ :kconfig:`OBERON_SINGLE_BACKEND <CONFIG_OBERON_SINGLE_BACKEND>`
- \ :kconfig:`VANILLA_MBEDTLS_CHACHA20_C <CONFIG_VANILLA_MBEDTLS_CHACHA20_C>` if \ :kconfig:`MBEDTLS_VANILLA_SINGLE_BACKEND <CONFIG_MBEDTLS_VANILLA_SINGLE_BACKEND>`

Kconfig definitions
===================



At ``<nRF>/modules/trusted-firmware-m/Kconfig.mbedtls_minimal.defconfig:42``

Included via ``<Zephyr>/Kconfig:8`` → ``<Zephyr>/Kconfig.zephyr:31`` → ``<Zephyr>/modules/Kconfig:6`` → ``<nRF>/doc/_build/kconfig/Kconfig.modules:14`` → ``<nRF>/modules/trusted-firmware-m/Kconfig:39``

Menu path: (Top) → Modules → trusted-firmware-m (/home/runner/work/sdk-nrf/sdk-nrf/ncs/modules/tee/tfm)

.. code-block:: kconfig

    config MBEDTLS_CHACHA20_C
    	bool
    	default n
    	depends on TFM_MINIMAL

----

At ``<nrfxlib>/nrf_security/Kconfig:783``

Included via ``<Zephyr>/Kconfig:8`` → ``<Zephyr>/Kconfig.zephyr:31`` → ``<Zephyr>/modules/Kconfig:6`` → ``<nRF>/doc/_build/kconfig/Kconfig.modules:86`` → ``<nrfxlib>/Kconfig.nrfxlib:13``

Menu path: (Top) → Modules → nrfxlib (/home/runner/work/sdk-nrf/sdk-nrf/ncs/nrfxlib) → Nordic nrfxlib → Nordic Security → Use Nordic provided security backend → AEAD  - Authenticated Encryption with Associated Data

.. code-block:: kconfig

    config MBEDTLS_CHACHA20_C
    	bool "CHACHA20 stream cipher support"
    	default y
    	select CC3XX_MBEDTLS_CHACHA20_C if CC3XX_SINGLE_BACKEND
    	select OBERON_MBEDTLS_CHACHA20_C if OBERON_SINGLE_BACKEND
    	select VANILLA_MBEDTLS_CHACHA20_C if MBEDTLS_VANILLA_SINGLE_BACKEND
    	depends on NRF_SECURITY_ANY_BACKEND && NORDIC_SECURITY_BACKEND
    	help
    	  Enable the CHACHA20 stream cipher.
    	  MBEDTLS_CHACHA20_C setting in mbed TLS config file.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*