:orphan:

.. title:: MBEDTLS_MPI_MAX_SIZE

.. option:: CONFIG_MBEDTLS_MPI_MAX_SIZE

*MPI - Multiple Precision Integers maximum size*

Type: ``int``

Help
====

Maximum number of bytes for usable Multiple Precision Integers (MPI) / Bignum.
This will reduce the size of MPIs that can be used for calculation.
Only reduce this value if it is ensured that the system won't need larger numbers.
MBEDTLS_MPI_MAX_SIZE setting in mbed TLS config file.

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

\ :option:`NRF_SECURITY_ADVANCED <CONFIG_NRF_SECURITY_ADVANCED>` && \ :option:`MBEDTLS_VANILLA_BACKEND <CONFIG_MBEDTLS_VANILLA_BACKEND>` && \ :option:`NORDIC_SECURITY_BACKEND <CONFIG_NORDIC_SECURITY_BACKEND>`

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

Default
=======

- 1024

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

.. highlight:: kconfig

At ``nrf_security/Kconfig:850``

Included via ``/jenkins_workspace/workspace/nrfconnect-nrf_doc_v1.2-branch_2/nrfxlib/Kconfig.nrfxlib:14``

Menu path: (Top) → Nordic nrfxlib → Nordic Security → Use Nordic provided security backend → Advanced mbed TLS Configuration Settings

.. parsed-literal::

    config MBEDTLS_MPI_MAX_SIZE
    	int "MPI - Multiple Precision Integers maximum size"
    	range 0 1024
    	default 1024
    	depends on \ :option:`NRF_SECURITY_ADVANCED <CONFIG_NRF_SECURITY_ADVANCED>` && \ :option:`MBEDTLS_VANILLA_BACKEND <CONFIG_MBEDTLS_VANILLA_BACKEND>` && \ :option:`NORDIC_SECURITY_BACKEND <CONFIG_NORDIC_SECURITY_BACKEND>`
    	help
    	  Maximum number of bytes for usable Multiple Precision Integers (MPI) / Bignum.
    	  This will reduce the size of MPIs that can be used for calculation.
    	  Only reduce this value if it is ensured that the system won't need larger numbers.
    	  MBEDTLS_MPI_MAX_SIZE setting in mbed TLS config file.

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