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2019-08-05 13:05:39 +01:00
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/**
  @page HASH_SHA1_MD5  HASH digest calculation using SHA1 and MD5 example
  
  @verbatim
  ******************** (C) COPYRIGHT 2017 STMicroelectronics *******************
  * @file    HASH/HASH_SHA1MD5/readme.txt
  * @author  MCD Application Team
  * @brief   Description of the digest calculation using SHA1 and MD5 Example.
  ******************************************************************************
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  @endverbatim

@par Example Description 

How to use the HASH peripheral to hash data with SHA-1 and MD5 algorithms.

For this example, DMA is not used for data transfer, the CPU is using HASH peripheral in
polling mode.

The SHA-1 message digest result is a 160 bit data and the MD5 message digest result 
is a 128 bit data.
The expected HASH digests (for SHA1 and MD5) are already computed using an online
HASH tool. Those values are compared to those computed by the HASH peripheral.

In case there is a missmatch the red LED is turned ON.
In case the SHA1 digest is computed correctly the green LED (LED1) is turned ON.
In case the MD5 digest is computed correctly the blue LED (LED4) is turned ON.


@note The connection of the LCD reset pin to a dedicated GPIO PK7 instead of the STM32F469 NRST pin may cause residual display on LCD with applications/examples that do not require display.
	  The LCD clear can be ensured by hardware through the board's power off/power on or by software calling the BSP_LCD_Reset() function.

@par Keywords

System, Security, HASH, SHA1, MD5, digest, 

@par Directory contents 

  - HASH/HASH_SHA1_MD5/Inc/stm32f4xx_hal_conf.h    HAL configuration file
  - HASH/HASH_SHA1_MD5/Inc/stm32f4xx_it.h          Interrupt handlers header file
  - HASH/HASH_SHA1_MD5/Inc/main.h                  Header for main.c module  
  - HASH/HASH_SHA1_MD5/Src/stm32f4xx_it.c          Interrupt handlers
  - HASH/HASH_SHA1_MD5/Src/main.c                  Main program
  - HASH/HASH_SHA1_MD5/Src/stm32f4xx_hal_msp.c     HAL MSP module
  - HASH/HASH_SHA1_MD5/Src/system_stm32f4xx.c      STM32F4xx system source file


@par Hardware and Software environment

  - This example runs on STM32F479xx devices.
  
  - This example has been tested and validated with STM32479I-EVAL RevC board and can be
    easily tailored to any other supported device and development board.

@par How to use it ? 

In order to make the program work, you must do the following :
 - Open your preferred toolchain 
 - Rebuild all files and load your image into target memory
 - Run the example 


 * <h3><center>&copy; COPYRIGHT STMicroelectronics</center></h3>
 */