:orphan:

.. title:: CONFIG_UPDATEHUB_DOWNLOAD_SHA256_VERIFICATION

.. kconfig:: CONFIG_UPDATEHUB_DOWNLOAD_SHA256_VERIFICATION

CONFIG_UPDATEHUB_DOWNLOAD_SHA256_VERIFICATION
#############################################

*SHA-256 on download*

Type: ``bool``

Help
====

.. code-block:: none

    Enables SHA-256 verification of data stream while downloading.
    Notice that it does not check whether the image written to a
    storage is still valid, it only confirms that what has been
    downloaded matches the server side SHA.

    To check if the data written to permanent storage matches the SHA
    simultaneously, enable "Both download and flash verifications"
    option.

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

\ :ref:`<choice: Firmware verification> <choice_536>`

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

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



At ``<Zephyr Subsystem>/mgmt/updatehub/Kconfig:119``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:44`` → ``<Zephyr Subsystem>/Kconfig:35`` → ``<Zephyr Subsystem>/mgmt/Kconfig:13``

Menu path: (Top) → Sub Systems and OS Services → Device Management → UpdateHub Firmware Over-the-Air support → Firmware verification

.. code-block:: kconfig

    config UPDATEHUB_DOWNLOAD_SHA256_VERIFICATION
    	bool "SHA-256 on download"
    	depends on <choice>
    	help
    	  Enables SHA-256 verification of data stream while downloading.
    	  Notice that it does not check whether the image written to a
    	  storage is still valid, it only confirms that what has been
    	  downloaded matches the server side SHA.
	  
    	  To check if the data written to permanent storage matches the SHA
    	  simultaneously, enable "Both download and flash verifications"
    	  option.

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