.. _sha256_algorithm:

SHA256 algorithm
================================

Overview
--------

**sha256_example**  the example project shows the implementation of sha256 algorithm.
- The decryption algorithm of this project adopts NIST sha256 method to complete the module encryption and decryption test.

Board Setting
-------------

- No special settings

Running the example
-------------------

When the project runs correctly, and the serial port terminal will output the following information:

.. code-block:: console

   tc_start() - Performing SHA256 tests (NIST tests vectors):
   SHA256 test #1:
   ===================================================================
   PASS - test_1.
   SHA256 test #2:
   ===================================================================
   PASS - test_2.
   SHA256 test #3:
   ===================================================================
   PASS - test_3.
   SHA256 test #4:
   ===================================================================
   PASS - test_4.
   SHA256 test #5:
   ===================================================================
   PASS - test_5.
   SHA256 test #6:
   ===================================================================
   PASS - test_6.
   SHA256 test #7:
   ===================================================================
   PASS - test_7.
   SHA256 test #8:
   ===================================================================
   PASS - test_8.
   SHA256 test #9:
   ===================================================================
   PASS - test_9.
   SHA256 test #10:
   ===================================================================
   PASS - test_10.
   SHA256 test #11:
   ===================================================================
   PASS - test_11.
   SHA256 test #12:
   ===================================================================
   PASS - test_12.
   SHA256 test #13:
   SHA256 test #14:
   ===================================================================
   PASS - test_14.
   All SHA256 tests succeeded!
   ===================================================================
   PASS - main.
   ===================================================================
   PROJECT EXECUTION SUCCESSFUL


.. note::

   test_14 will take a few minutes to run, please be patient