:orphan:

.. title:: CONFIG_CTR_DRBG_CSPRNG_GENERATOR

.. kconfig:: CONFIG_CTR_DRBG_CSPRNG_GENERATOR

CONFIG_CTR_DRBG_CSPRNG_GENERATOR
################################

*Use CTR-DRBG CSPRNG*

Type: ``bool``

Help
====

.. code-block:: none

    Enables the CTR-DRBG pseudo-random number generator. This CSPRNG
    shall use the entropy API for an initialization seed. The CTR-DRBG
    is a a FIPS140-2 recommended cryptographically secure random number
    generator.

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

(\ :kconfig:`MBEDTLS <CONFIG_MBEDTLS>` || \ :kconfig:`TINYCRYPT <CONFIG_TINYCRYPT>`) && \ :kconfig:`ENTROPY_HAS_DRIVER <CONFIG_ENTROPY_HAS_DRIVER>` && \ :ref:`<choice CSPRNG_GENERATOR_CHOICE: Cryptographically secure random generator> <choice_24>`

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

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

- \ :kconfig:`TINYCRYPT_CTR_PRNG <CONFIG_TINYCRYPT_CTR_PRNG>` if \ :kconfig:`TINYCRYPT <CONFIG_TINYCRYPT>`
- \ :kconfig:`TINYCRYPT_AES <CONFIG_TINYCRYPT_AES>` if \ :kconfig:`TINYCRYPT <CONFIG_TINYCRYPT>`

Kconfig definition
==================



At ``<Subsystem>/random/Kconfig:90``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:44`` → ``<Subsystem>/Kconfig:53``

Menu path: (Top) → Sub Systems and OS Services → Random Number Generators → Cryptographically secure random generator

.. code-block:: kconfig

    config CTR_DRBG_CSPRNG_GENERATOR
    	bool "Use CTR-DRBG CSPRNG"
    	select TINYCRYPT_CTR_PRNG if TINYCRYPT
    	select TINYCRYPT_AES if TINYCRYPT
    	depends on (MBEDTLS || TINYCRYPT) && ENTROPY_HAS_DRIVER && <choice CSPRNG_GENERATOR_CHOICE>
    	help
    	  Enables the CTR-DRBG pseudo-random number generator. This CSPRNG
    	  shall use the entropy API for an initialization seed. The CTR-DRBG
    	  is a a FIPS140-2 recommended cryptographically secure random number
    	  generator.

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