|
|
/**
|
|
|
******************************************************************************
|
|
|
* @file stm32f4xx_hash_sha1.c
|
|
|
* @author MCD Application Team
|
|
|
* @version V1.0.0RC1
|
|
|
* @date 25-August-2011
|
|
|
* @brief This file provides high level functions to compute the HASH SHA1 and
|
|
|
* HMAC SHA1 Digest of an input message.
|
|
|
* It uses the stm32f4xx_hash.c/.h drivers to access the STM32F4xx HASH
|
|
|
* peripheral.
|
|
|
*
|
|
|
* @verbatim
|
|
|
*
|
|
|
* ===================================================================
|
|
|
* How to use this driver
|
|
|
* ===================================================================
|
|
|
* 1. Enable The HASH controller clock using
|
|
|
* RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_HASH, ENABLE); function.
|
|
|
*
|
|
|
* 2. Calculate the HASH SHA1 Digest using HASH_SHA1() function.
|
|
|
*
|
|
|
* 3. Calculate the HMAC SHA1 Digest using HMAC_SHA1() function.
|
|
|
*
|
|
|
* @endverbatim
|
|
|
*
|
|
|
******************************************************************************
|
|
|
* @attention
|
|
|
*
|
|
|
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
|
|
|
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
|
|
|
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
|
|
|
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
|
|
|
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
|
|
|
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
|
|
|
*
|
|
|
* <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
|
|
|
******************************************************************************
|
|
|
*/
|
|
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
|
#include "stm32f4xx_hash.h"
|
|
|
|
|
|
/** @addtogroup STM32F4xx_StdPeriph_Driver
|
|
|
* @{
|
|
|
*/
|
|
|
|
|
|
/** @defgroup HASH
|
|
|
* @brief HASH driver modules
|
|
|
* @{
|
|
|
*/
|
|
|
|
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
|
/* Private define ------------------------------------------------------------*/
|
|
|
#define SHA1BUSY_TIMEOUT ((uint32_t) 0x00010000)
|
|
|
|
|
|
/* Private macro -------------------------------------------------------------*/
|
|
|
/* Private variables ---------------------------------------------------------*/
|
|
|
/* Private function prototypes -----------------------------------------------*/
|
|
|
/* Private functions ---------------------------------------------------------*/
|
|
|
|
|
|
/** @defgroup HASH_Private_Functions
|
|
|
* @{
|
|
|
*/
|
|
|
|
|
|
/** @defgroup HASH_Group6 High Level SHA1 functions
|
|
|
* @brief High Level SHA1 Hash and HMAC functions
|
|
|
*
|
|
|
@verbatim
|
|
|
===============================================================================
|
|
|
High Level SHA1 Hash and HMAC functions
|
|
|
===============================================================================
|
|
|
|
|
|
|
|
|
@endverbatim
|
|
|
* @{
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @brief Compute the HASH SHA1 digest.
|
|
|
* @param Input: pointer to the Input buffer to be treated.
|
|
|
* @param Ilen: length of the Input buffer.
|
|
|
* @param Output: the returned digest
|
|
|
* @retval An ErrorStatus enumeration value:
|
|
|
* - SUCCESS: digest computation done
|
|
|
* - ERROR: digest computation failed
|
|
|
*/
|
|
|
ErrorStatus HASH_SHA1(uint8_t *Input, uint32_t Ilen, uint8_t Output[20])
|
|
|
{
|
|
|
HASH_InitTypeDef SHA1_HASH_InitStructure;
|
|
|
HASH_MsgDigest SHA1_MessageDigest;
|
|
|
__IO uint16_t nbvalidbitsdata = 0;
|
|
|
uint32_t i = 0;
|
|
|
__IO uint32_t counter = 0;
|
|
|
uint32_t busystatus = 0;
|
|
|
ErrorStatus status = SUCCESS;
|
|
|
uint32_t inputaddr = (uint32_t)Input;
|
|
|
uint32_t outputaddr = (uint32_t)Output;
|
|
|
|
|
|
/* Number of valid bits in last word of the Input data */
|
|
|
nbvalidbitsdata = 8 * (Ilen % 4);
|
|
|
|
|
|
/* HASH peripheral initialization */
|
|
|
HASH_DeInit();
|
|
|
|
|
|
/* HASH Configuration */
|
|
|
SHA1_HASH_InitStructure.HASH_AlgoSelection = HASH_AlgoSelection_SHA1;
|
|
|
SHA1_HASH_InitStructure.HASH_AlgoMode = HASH_AlgoMode_HASH;
|
|
|
SHA1_HASH_InitStructure.HASH_DataType = HASH_DataType_8b;
|
|
|
HASH_Init(&SHA1_HASH_InitStructure);
|
|
|
|
|
|
/* Configure the number of valid bits in last word of the data */
|
|
|
HASH_SetLastWordValidBitsNbr(nbvalidbitsdata);
|
|
|
|
|
|
/* Write the Input block in the IN FIFO */
|
|
|
for(i=0; i<Ilen; i+=4)
|
|
|
{
|
|
|
HASH_DataIn(*(uint32_t*)inputaddr);
|
|
|
inputaddr+=4;
|
|
|
}
|
|
|
|
|
|
/* Start the HASH processor */
|
|
|
HASH_StartDigest();
|
|
|
|
|
|
/* wait until the Busy flag is RESET */
|
|
|
do
|
|
|
{
|
|
|
busystatus = HASH_GetFlagStatus(HASH_FLAG_BUSY);
|
|
|
counter++;
|
|
|
}while ((counter != SHA1BUSY_TIMEOUT) && (busystatus != RESET));
|
|
|
|
|
|
if (busystatus != RESET)
|
|
|
{
|
|
|
status = ERROR;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/* Read the message digest */
|
|
|
HASH_GetDigest(&SHA1_MessageDigest);
|
|
|
*(uint32_t*)(outputaddr) = __REV(SHA1_MessageDigest.Data[0]);
|
|
|
outputaddr+=4;
|
|
|
*(uint32_t*)(outputaddr) = __REV(SHA1_MessageDigest.Data[1]);
|
|
|
outputaddr+=4;
|
|
|
*(uint32_t*)(outputaddr) = __REV(SHA1_MessageDigest.Data[2]);
|
|
|
outputaddr+=4;
|
|
|
*(uint32_t*)(outputaddr) = __REV(SHA1_MessageDigest.Data[3]);
|
|
|
outputaddr+=4;
|
|
|
*(uint32_t*)(outputaddr) = __REV(SHA1_MessageDigest.Data[4]);
|
|
|
}
|
|
|
return status;
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* @brief Compute the HMAC SHA1 digest.
|
|
|
* @param Key: pointer to the Key used for HMAC.
|
|
|
* @param Keylen: length of the Key used for HMAC.
|
|
|
* @param Input: pointer to the Input buffer to be treated.
|
|
|
* @param Ilen: length of the Input buffer.
|
|
|
* @param Output: the returned digest
|
|
|
* @retval An ErrorStatus enumeration value:
|
|
|
* - SUCCESS: digest computation done
|
|
|
* - ERROR: digest computation failed
|
|
|
*/
|
|
|
ErrorStatus HMAC_SHA1(uint8_t *Key, uint32_t Keylen, uint8_t *Input,
|
|
|
uint32_t Ilen, uint8_t Output[20])
|
|
|
{
|
|
|
HASH_InitTypeDef SHA1_HASH_InitStructure;
|
|
|
HASH_MsgDigest SHA1_MessageDigest;
|
|
|
__IO uint16_t nbvalidbitsdata = 0;
|
|
|
__IO uint16_t nbvalidbitskey = 0;
|
|
|
uint32_t i = 0;
|
|
|
__IO uint32_t counter = 0;
|
|
|
uint32_t busystatus = 0;
|
|
|
ErrorStatus status = SUCCESS;
|
|
|
uint32_t keyaddr = (uint32_t)Key;
|
|
|
uint32_t inputaddr = (uint32_t)Input;
|
|
|
uint32_t outputaddr = (uint32_t)Output;
|
|
|
|
|
|
/* Number of valid bits in last word of the Input data */
|
|
|
nbvalidbitsdata = 8 * (Ilen % 4);
|
|
|
|
|
|
/* Number of valid bits in last word of the Key */
|
|
|
nbvalidbitskey = 8 * (Keylen % 4);
|
|
|
|
|
|
/* HASH peripheral initialization */
|
|
|
HASH_DeInit();
|
|
|
|
|
|
/* HASH Configuration */
|
|
|
SHA1_HASH_InitStructure.HASH_AlgoSelection = HASH_AlgoSelection_SHA1;
|
|
|
SHA1_HASH_InitStructure.HASH_AlgoMode = HASH_AlgoMode_HMAC;
|
|
|
SHA1_HASH_InitStructure.HASH_DataType = HASH_DataType_8b;
|
|
|
if(Keylen > 64)
|
|
|
{
|
|
|
/* HMAC long Key */
|
|
|
SHA1_HASH_InitStructure.HASH_HMACKeyType = HASH_HMACKeyType_LongKey;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/* HMAC short Key */
|
|
|
SHA1_HASH_InitStructure.HASH_HMACKeyType = HASH_HMACKeyType_ShortKey;
|
|
|
}
|
|
|
HASH_Init(&SHA1_HASH_InitStructure);
|
|
|
|
|
|
/* Configure the number of valid bits in last word of the Key */
|
|
|
HASH_SetLastWordValidBitsNbr(nbvalidbitskey);
|
|
|
|
|
|
/* Write the Key */
|
|
|
for(i=0; i<Keylen; i+=4)
|
|
|
{
|
|
|
HASH_DataIn(*(uint32_t*)keyaddr);
|
|
|
keyaddr+=4;
|
|
|
}
|
|
|
|
|
|
/* Start the HASH processor */
|
|
|
HASH_StartDigest();
|
|
|
|
|
|
/* wait until the Busy flag is RESET */
|
|
|
do
|
|
|
{
|
|
|
busystatus = HASH_GetFlagStatus(HASH_FLAG_BUSY);
|
|
|
counter++;
|
|
|
}while ((counter != SHA1BUSY_TIMEOUT) && (busystatus != RESET));
|
|
|
|
|
|
if (busystatus != RESET)
|
|
|
{
|
|
|
status = ERROR;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/* Configure the number of valid bits in last word of the Input data */
|
|
|
HASH_SetLastWordValidBitsNbr(nbvalidbitsdata);
|
|
|
|
|
|
/* Write the Input block in the IN FIFO */
|
|
|
for(i=0; i<Ilen; i+=4)
|
|
|
{
|
|
|
HASH_DataIn(*(uint32_t*)inputaddr);
|
|
|
inputaddr+=4;
|
|
|
}
|
|
|
|
|
|
/* Start the HASH processor */
|
|
|
HASH_StartDigest();
|
|
|
|
|
|
|
|
|
/* wait until the Busy flag is RESET */
|
|
|
counter =0;
|
|
|
do
|
|
|
{
|
|
|
busystatus = HASH_GetFlagStatus(HASH_FLAG_BUSY);
|
|
|
counter++;
|
|
|
}while ((counter != SHA1BUSY_TIMEOUT) && (busystatus != RESET));
|
|
|
|
|
|
if (busystatus != RESET)
|
|
|
{
|
|
|
status = ERROR;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/* Configure the number of valid bits in last word of the Key */
|
|
|
HASH_SetLastWordValidBitsNbr(nbvalidbitskey);
|
|
|
|
|
|
/* Write the Key */
|
|
|
keyaddr = (uint32_t)Key;
|
|
|
for(i=0; i<Keylen; i+=4)
|
|
|
{
|
|
|
HASH_DataIn(*(uint32_t*)keyaddr);
|
|
|
keyaddr+=4;
|
|
|
}
|
|
|
|
|
|
/* Start the HASH processor */
|
|
|
HASH_StartDigest();
|
|
|
|
|
|
/* wait until the Busy flag is RESET */
|
|
|
counter =0;
|
|
|
do
|
|
|
{
|
|
|
busystatus = HASH_GetFlagStatus(HASH_FLAG_BUSY);
|
|
|
counter++;
|
|
|
}while ((counter != SHA1BUSY_TIMEOUT) && (busystatus != RESET));
|
|
|
|
|
|
if (busystatus != RESET)
|
|
|
{
|
|
|
status = ERROR;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/* Read the message digest */
|
|
|
HASH_GetDigest(&SHA1_MessageDigest);
|
|
|
*(uint32_t*)(outputaddr) = __REV(SHA1_MessageDigest.Data[0]);
|
|
|
outputaddr+=4;
|
|
|
*(uint32_t*)(outputaddr) = __REV(SHA1_MessageDigest.Data[1]);
|
|
|
outputaddr+=4;
|
|
|
*(uint32_t*)(outputaddr) = __REV(SHA1_MessageDigest.Data[2]);
|
|
|
outputaddr+=4;
|
|
|
*(uint32_t*)(outputaddr) = __REV(SHA1_MessageDigest.Data[3]);
|
|
|
outputaddr+=4;
|
|
|
*(uint32_t*)(outputaddr) = __REV(SHA1_MessageDigest.Data[4]);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
return status;
|
|
|
}
|
|
|
/**
|
|
|
* @}
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @}
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @}
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @}
|
|
|
*/
|
|
|
|
|
|
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
|
|
|
|
