:orphan:

.. title:: CTR_DRBG_CSPRNG_GENERATOR

.. option:: CONFIG_CTR_DRBG_CSPRNG_GENERATOR

*Use CTR-DRBG CSPRNG*

Type: ``bool``

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.

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

(\ :option:`MBEDTLS <CONFIG_MBEDTLS>` || \ :option:`TINYCRYPT <CONFIG_TINYCRYPT>`) && \ :option:`ENTROPY_HAS_DRIVER <CONFIG_ENTROPY_HAS_DRIVER>` && \ :ref:`<choice CSPRNG_GENERATOR_CHOICE: Cryptographically secure random generator> <choice_17>`

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

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

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

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

.. highlight:: kconfig

At ``subsys/random/Kconfig:87``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:34`` → ``subsys/Kconfig:49``

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

.. parsed-literal::

    config CTR_DRBG_CSPRNG_GENERATOR
    	bool "Use CTR-DRBG CSPRNG"
    	select \ :option:`TINYCRYPT_CTR_PRNG <CONFIG_TINYCRYPT_CTR_PRNG>` if \ :option:`TINYCRYPT <CONFIG_TINYCRYPT>`
    	select \ :option:`TINYCRYPT_AES <CONFIG_TINYCRYPT_AES>` if \ :option:`TINYCRYPT <CONFIG_TINYCRYPT>`
    	depends on (\ :option:`MBEDTLS <CONFIG_MBEDTLS>` || \ :option:`TINYCRYPT <CONFIG_TINYCRYPT>`) && \ :option:`ENTROPY_HAS_DRIVER <CONFIG_ENTROPY_HAS_DRIVER>` && \ :ref:`<choice CSPRNG_GENERATOR_CHOICE: Cryptographically secure random generator> <choice_17>`
    	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.)*