/*!
    \file    readme.txt
    \brief   description of Hmac_SHA1_MD5 example

    \version 2026-02-06, V3.0.0, firmware for GD32F20x
*/

/*
    Copyright (c) 2026, GigaDevice Semiconductor Inc.

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are permitted provided that the following conditions are met:

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       may be used to endorse or promote products derived from this software without 
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
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*/

  This demo is based on the GD32207i-EVAL-V1.2 board, it shows how to use the HAU
peripheral to hash data using HMAC SHA-1 and HMAC MD5 algorithms.

  The key used is long type (2088 bit data).
  The HMAC SHA-1 message digest result is a 160 bit data and the HMAC MD5 message 
digest result is a 128 bit data.
  If the hash calculation results are consistent with the expected result, then 
the LED1 will light up.  All result data can be displayed on the PC HyperTerminal 
using the USART, and the expected print results are as follows:

 message input:

CHN GigaDevice Semiconductor IncCHN GigaDevice Semiconductor IncCHN GigaDevice Semiconductor IncCHN GigaDevice Semiconductor IncCHN GigaDevice Semiconductor IncCHN GigaDevice Semiconductor IncCHN GigaDevice Semiconductor IncCHN GigaDevice Semiconductor IncCHN

 key input:

ABCDEFGHIJKLMNOPABCDEFGHIJKLMNOPABCDEFGHIJKLMNOPABCDEFGHIJKLMNOPABCDEFGHIJKLMNOPABCDEFGHIJKLMNOPABCDEFGHIJKLMNOPABCDEFGHIJKLMNOP 

SHA1 message digest (160 bits):

 0xDD 0x29 0x87 0xE3
 0xDC 0xAC 0xE2 0x16
 0xE0 0x0D 0xEB 0x0B
 0xB1 0xE9 0xE6 0xB4
 0xA7 0x07 0xD1 0x4B
 

MD5 Message Digest (128 bits):

 0xDF 0x9F 0x9E 0x3A
 0xFE 0x46 0x2B 0x0E
 0xB4 0xF2 0xCB 0x96
 0xBA 0xEE 0xF0 0xA6




